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6124 lines
141 KiB
C
6124 lines
141 KiB
C
/*
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File: DataAccessMgr.c
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Contains: C routines for the Data Access Manager (codename SnarfMan).
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These internal routines have parallel names to the public
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routines to avoid name conflicts (e.g. DBInit is SMInit).
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Written by: Jeff Miller
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Copyright: © 1989-1992 by Apple Computer, Inc., all rights reserved.
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Change History (most recent first):
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<SM2> 11/19/92 RB Set ROMMapInsert to MapTrue just before doing some GetResource
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calls so that we look in ROM first.
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<30> 3/13/92 JSM Renamed this file DataAccessMgr.c from SnarfMan.c, keeping all
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the old revisions.
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<29> 7/15/91 dba get rid of MEMERR
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<28> 6/12/91 JSM Completely delete about box code, which hasn't been used since
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revision 19 anyway.
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<27> 10/21/90 gbm Changing .hfileInfo to .hFileInfo again to match interfaces.
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<27> 10/2/90 JAL Changed .hfileInfo to .hFileInfo to match interfaces.
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<26> 9/12/90 JSM Fix bug when DBGetQueryResults is called async and DBState
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returns noErr.
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<25> 7/22/90 JSM rcDBNull is a valid return code to get from DBGetItem in
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DBGetQueryResults, don't return an error in this case.
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<24> 6/4/90 DC changed divide by 2 in FindHandler to right shift 1.
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<23> 4/25/90 JSM Remove SMQuitDBPack, since it's no longer implemented.
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<22> 4/24/90 JSM More code size reduction: Add CallStatusProc (common code for
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most status function calls), calculate resListSize once in
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SMGetNewQuery.
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<21> 4/23/90 JSM Save and restore current GrafPort across call to qdef in
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SMStartQuery.
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<20> 4/10/90 JSM Make DBGetNewQuery return more errors, don't explicitly return
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resNotFound unless ResErr is noErr, change back to .hfileInfo
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(thanks, Dave).
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<19> 4/2/90 JSM Even more code size reduction: remove about box and other
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changes far too numerous to mention.
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<18> 3/28/90 JSM Code size reduction: read ResErr and MemErr directly from
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lomem.
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<17> 3/13/90 JSM Change names of ResultsHandler routines to ResultHandler, add
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support for new status function and result handler interface,
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add support for new ResultsRecord format.
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<16> 3/12/90 JSM Add support for completion routine in a separate resource.
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<15> 3/9/90 JAL Changed .hfileInfo to .hFileInfo to match Files.h change.
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<14> 2/26/90 JSM Don't HLock and HNoPurge package, now handled by PACKHelper.
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<13> 2/23/90 JSM Add support for results handlers in separate resource.
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<12> 2/22/90 JSM Add kDBStartQueryComplete, fix bug where AllDoneProc was never
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cleaning up.
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<11> 2/20/90 JSM Don't allow NULL query on DBStartQuery.
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<10> 2/6/90 JSM Change rcDBCancel and rcDBStatusCancel to userCanceledErr, add
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support for new status function message
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kDBGetQueryResultsComplete.
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<9> 2/5/90 JSM Look for ddevs in Extensions Folder.
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<8> 1/31/90 JSM Fix return code bug in DBGetConnInfo.
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<7> 1/18/90 JSM Use STR# from System file in default results handlers.
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<6> 1/5/90 JSM Change default results handler for text to strip off trailing
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spaces.
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<5> 1/4/90 JSM Change some variable names in response to suggestions from
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documentation.
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<4> 12/28/89 dba Use quotes around the SnarfMan.h header file name, since the
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file is a local header rather than part of public Interfaces.
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<3> 12/22/89 JSM Use kDBLastColFlag in DBGetQueryResults.
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<2> 12/20/89 JSM Cleanup for new build system.
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<2.9> 12/7/89 JSM Added support for buffering partial rows in DBGetQueryResults.
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<2.8> 11/21/89 JSM Set queryList and resList handles to NIL instead of empty
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handles in DBGetNewQuery if no queries or resources in 'qrsc'.
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<2.7> 11/15/89 JSM Always return sessID from ddev on DBInit, fix bug where calling
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DBGetQueryResults async when no results causes problems.
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<2.6> 11/7/89 JSM Added status functions, changed DBUnGetVal to DBUnGetItem, keep
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track of ddev folder with vRefNum and dirID.
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<2.5> 11/6/89 JSM Fixed bug with return codes from DBGetConnInfo.
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<2.4> 11/1/89 JSM Fixed error handling for GetResource calls.
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<2.3> 10/13/89 JSM Removed hack in DBGetQueryResults processing that worked around
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a bug in CL/1 5.022.
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<2.2> 10/6/89 JSM Updated to make SnarfMan a PACK.
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<2.1> 9/18/89 JSM General cleanup and optimizing, fixed potential problem if null
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parameters were passed in on some calls.
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<2.0> 8/29/89 JSM Updated for new version 2 API.
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<1.9> 8/7/89 JSM Added support for colLens in ResultsRecord, and kill and
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results-to-text stuff (not quite done yet).
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<1.8> 7/26/89 JSM Added support for ddev flags.
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<1.7> 7/19/89 JSM Changed 'type' to 'dataType' in several places.
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<1.6> 7/15/89 JSM Async stuff works now.
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<1.5> 6/22/89 JSM Don't build ddev list at patch time, updated SMGetRow, messed
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around with async some more.
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<1.4> 6/9/89 JSM Added more stuff to support async, not quite working yet.
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<1.3> 5/31/89 JSM No longer checks for rcDBReady, doesn't return rcDBSize, added
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async support.
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<1.2> 5/18/89 JSM Now return OSErr for everything, plus numerous other changes.
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<1.1> 4/28/89 JSM Added lots o' new stuff, mostly high-level calls.
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<1.0> 4/11/89 JSM Added to EASE for the first time.
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*/
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/* include our private header */
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#include "DatabaseAccessPriv.h"
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#include <SysEqu.h>
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// #define DODPRINTF
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/* I M P O R T S */
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snarfGlobPtr GetGlobals();
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snarfGlobPtr* GetGlobalsPtr();
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void mymemclear(char *s, long size);
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void CallCompletion(DBAsyncParmBlkPtr asyncPB);
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/* E X P O R T S */
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pascal OSErr SMInitDBPack(short version);
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OSErr InstallDefaultHandlers(snarfGlobPtr glob);
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pascal OSErr SMIdle();
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OSErr SMOpen(ddevElemHndl ddevH);
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OSErr SMClose(ddevElemHndl ddevH);
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pascal OSErr SMInit(long *sessID, const Str63 ddevName, const Str255 host,
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const Str255 user, const Str255 password, const Str255 connStr,
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DBAsyncParmBlkPtr asyncPB);
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pascal void SMInitComplete(ddevElemHndl ddevH, long *sessIDPtr,
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long sessID, Boolean firstsess);
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pascal OSErr SMEnd(long sessID, DBAsyncParmBlkPtr asyncPB);
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OSErr SMEndComplete(snarfSessElemHndl snarf);
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pascal OSErr SMGetConnInfo(long sessID, short sessNum, long *returnedID,
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long *version, Str63 ddevName, Str255 host, Str255 user,
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Str255 network, Str255 connStr, long *start, OSErr *state,
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DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMGetSessionNum(long sessID, short *sessNum, DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMSend(long sessID, char *text, short len, DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMSendItem(long sessID, DBType dataType, short len, short places,
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short flags, Ptr buffer, DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMExec(long sessID, DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMState(long sessID, DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMGetErr(long sessID, long *err1, long *err2, Str255 item1,
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Str255 item2, Str255 errorMsg, DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMBreak(long sessID, Boolean abort, DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMGetItem(long sessID, long timeout, DBType *dataType, short *len,
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short *places, short *flags, Ptr buffer, DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMUnGetItem(long sessID, DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMGetNewQuery(short queryID, QueryHandle *query);
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pascal OSErr SMDisposeQuery(QueryHandle query);
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pascal OSErr SMStartQuery(long *sessID, QueryHandle query, statusPtr statusProc,
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DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMGetQueryResults(long sessID, ResultsRecord *results,
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long timeout, statusPtr statusProc, DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMKill(DBAsyncParmBlkPtr asyncPB);
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pascal OSErr SMResultsToText(ResultsRecord *results, Handle *theText);
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HandlerPtr GetCorrectResultHandler(DBType dataType);
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pascal OSErr SMInstallResultHandler(DBType dataType, ProcPtr theHandler,
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Boolean isSysHandler);
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pascal OSErr SMRemoveResultHandler(DBType dataType);
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pascal OSErr SMGetResultHandler(DBType dataType, ProcPtr *theHandler,
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Boolean getSysHandler);
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short FindHandler(DBType dataType);
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OSErr InsertHandler(HandlerRecord *newRec);
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OSErr RemoveHandler(short index);
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OSErr SMGeneric(long snarfID, DBAsyncParmBlkPtr asyncPB,
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DDEVParams *params);
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OSErr InitDoneProc(DBAsyncParmBlkPtr myPB, asyncVarsPtr myVars);
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OSErr SendDoneProc(DBAsyncParmBlkPtr myPB, asyncVarsPtr myVars);
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OSErr ExecDoneProc(DBAsyncParmBlkPtr myPB, asyncVarsPtr myVars);
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OSErr StateDoneProc(DBAsyncParmBlkPtr myPB, asyncVarsPtr myVars);
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OSErr GetItemDoneProc(DBAsyncParmBlkPtr myPB, asyncVarsPtr myVars);
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OSErr AllDoneProc(DBAsyncParmBlkPtr myPB, asyncVarsPtr myVars);
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void BuildDDEVList(ddevElemHndl *root);
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void ClearDDEVList(ddevElemHndl root);
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void PurgeDDEVList(ddevElemHndl *root);
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void AddDDEVFile(const Str255 fname, short vRefNum, long dirID,
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ddevElemHndl *root);
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ddevElemHndl FindAndBuildDDEV(char *name, ddevElemHndl *rootPtr);
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ddevElemHndl FindDDEV(char *name, ddevElemHndl root);
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OSErr OpenDDEVFile(ddevElemHndl ddevH, short *refNum);
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OSErr CallDDEV(ddevElemHndl ddevH, DDEVParams *params);
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long GetUniqueSnarfID(snarfSessElemHndl root);
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snarfSessElemHndl FindSnarfID(long id, snarfSessElemHndl root);
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long ConvertSessIDToSnarfID(long sessID, ddevElemHndl ddevH);
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void InsertSessionCell(sessElemHndl *root, sessElemHndl cell);
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void InsertSnarfCell(snarfSessElemHndl *root, snarfSessElemHndl cell);
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DBAsyncParmBlkPtr MakePB(DDEVParamsPtr params, DBAsyncParmBlkPtr asyncPB);
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pascal void InsertPB(DBAsyncParmBlkPtr asyncPB);
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pascal void RemovePB(DBAsyncParmBlkPtr asyncPB);
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DBAsyncParmBlkPtr FindAppPB(DBAsyncParmBlkPtr appPB);
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void GetDDEVFolder(short *vRefNum, long *dirID);
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OSErr GrowResultsRecord(ResultsRecord *results, short len,
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Boolean inFirstRow);
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OSErr SetupResults(long sessID, snarfSessElemHndl *snarfPtr,
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ResultsRecord *results, ResultsRecord **oldResultsPtr,
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long *currOffset, short *currCol);
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pascal void DisposeResultsRecord(ResultsRecord *results);
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OSErr InitResultsRecord(ResultsRecord *results, Boolean inSysHeap);
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OSErr CallStatusProc(statusPtr statusProc, short message, OSErr rc);
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pascal void MyHLock(Handle h, char *state);
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/*FORM_FEED*/
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/*
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*
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* OBJECT: SMInitDBPack
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*
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* DESCRIPTION: Called to initialize SnarfMan by each application. The version
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* number is implicitly passed in by the routine definition in
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* DatabaseAccess.h. This number is compared to the version in the
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* PACK resource. The first time this routine is called, it
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* allocates space for globals and installs default result handlers.
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*
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* INPUTS: version: Version as defined in DatabaseAccess.h.
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*
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* OUTPUTS: None.
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*
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* RETURNS: rcDBWrongVersion
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* Errors from NewPtrSysClear and InstallDefaultHandlers.
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*
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* MODIFICATIONS:
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* 10-03-89 JSM - Created.
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*
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* Copyright Apple Computer, Inc. 1989
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* All rights reserved.
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*
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*/
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pascal OSErr
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SMInitDBPack(short version)
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{
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register snarfGlobPtr *globPtr;
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register snarfGlobPtr glob;
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register short rc;
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Handle resH;
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PackHeaderHndl thePack;
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/* compare version numbers */
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thePack = DataAccessMgrPack;
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if ((**thePack).version != version)
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return(rcDBWrongVersion);
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/*
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For now, we always stay locked down.
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Hopefully, we'll be more intelligent about this in
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the future.
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We no longer need to do this, PACKHelper takes care of it!
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*/
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// HNoPurge((Handle)thePack);
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// HLock((Handle)thePack);
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/* see if we need to allocate globals */
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globPtr = GetGlobalsPtr();
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rc = noErr;
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if (*globPtr == NULL)
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{
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/* allocate a cleared pointer in the system heap for globals */
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*globPtr = (snarfGlobPtr)NewPtrSysClear(sizeof(snarfGlob));
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rc = MemError();
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if (rc == noErr)
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{
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glob = *globPtr;
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/* build the list of installed ddevs */
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/*
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It turns out we can't do this at patch time because there is
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no International Utilities package available yet (AddDDEVFile
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calls IUCompStr). So, it gets done at the first DBInit call.
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BuildDDEVList(&((*globPtr)->ddevRoot));
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*/
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/*
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Load the standard completion routine.
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We have to keep this separate so it doesn't
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get unlocked and/or purged at the wrong
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time by PACKHelper.
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*/
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*((short*) RomMapInsert) = mapTrue;
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resH = GetResource(COMPCODERESTYPE, COMPCODERESID);
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if (resH != NULL)
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{
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/* detach it */
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DetachResource(resH);
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/* resource should have locked bit set */
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/* save this handle in the globals */
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/* we may purge this someday */
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glob->completionRes = resH;
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}
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else
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{
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/* couldn't get specified 'proc' resource */
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if ((rc = RESERR) == noErr)
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rc = resNotFound;
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/* we better not continue, so get rid of the globals */
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DisposPtr((Ptr)glob);
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*globPtr = NULL;
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}
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if (rc == noErr)
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{
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/* install default result handlers */
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rc = InstallDefaultHandlers(glob);
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/* even if this fails, it isn't a fatal error, so leave globals around */
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}
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}
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}
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return(rc);
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} /* SMInitDBPack() */
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/*FORM_FEED*/
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/*
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*
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* OBJECT: InstallDefaultHandlers
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*
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* DESCRIPTION: Called by SMInitDBPack to install the default system result handlers.
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* Reads the 'rtt#' resource and 'proc' resource containing the handlers,
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* then calls DBInstallResultHandler for each one.
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*
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* INPUTS: glob: Pointer to globals.
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*
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* OUTPUTS: None.
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*
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* RETURNS: resNotFound
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* Errors from NewHandleSys and DBInstallResultHandler.
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*
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* MODIFICATIONS:
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* 03-29-90 JSM - Created.
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*
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* Copyright Apple Computer, Inc. 1990
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* All rights reserved.
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*
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*/
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OSErr
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InstallDefaultHandlers(snarfGlobPtr glob)
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{
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register OSErr rc;
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register Handle resH;
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register Ptr resP;
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register short numTypes;
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register short handlerID;
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Handle handlerH;
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ProcPtr p;
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/* short numHandlers; */
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/* allocate empty array of result handlers */
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glob->handlers = (HandlerRecordHandle)NewHandleSys(NULL);
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rc = MemError();
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/*
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Install the default handlers.
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These live in a separate 'proc' resource so it can stay locked
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down in one place all the time. The 'rtt#' resource specifies
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which handlers we have. It looks like:
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short numHandlers; number of 'proc' resources
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we only support one now
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For each 'proc':
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short id; id of 'proc'
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short numTypes; number of types handled by this 'proc'
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DBType typeArray[numTypes]; types handled by this 'proc'
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*/
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if (rc == noErr)
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{
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/* get the 'rtt#' */
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*((short*) RomMapInsert) = mapTrue;
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resH = GetResource(RTTLISTRESTYPE, RTTLISTID);
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if (resH != NULL)
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{
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HLock(resH);
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resP = *resH;
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/* get number of 'proc' resources */
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/* we support one and only one for now */
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/* numHandlers = *((short*)resP); */
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resP += sizeof(short);
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/* get the id of this 'proc' */
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handlerID = *((short*)resP);
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resP += sizeof(short);
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/* get number of types supported by this 'proc' */
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numTypes = *((short*)resP);
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resP += sizeof(short);
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/* load in 'proc' */
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*((short*) RomMapInsert) = mapTrue;
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handlerH = GetResource(RTTCODERESTYPE, handlerID);
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if (handlerH != NULL)
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{
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/* detach it */
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DetachResource(handlerH);
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/* resource should have locked bit set */
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/* save this handle in the globals */
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/* we may purge this someday */
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glob->handlerRes = handlerH;
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/* make sure we're 32 bit clean */
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p = (ProcPtr)StripAddress(*handlerH);
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/* now, install it as a result handler for specified types */
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while((numTypes != 0) && (rc == noErr))
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{
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/* install handler for current type */
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rc = DBInstallResultHandler(*((DBType*)resP), p, true);
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resP += sizeof(DBType);
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numTypes--;
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}
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}
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else
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{
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/* couldn't get specified 'proc' resource */
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if ((rc = RESERR) == noErr)
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rc = resNotFound;
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}
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/* get rid of 'rtt#' (no need to unlock it) */
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ReleaseResource(resH);
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}
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/* we could put an else here if 'rtt#' resource not found, but it's not a fatal error */
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}
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return(rc);
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} /* InstallDefaultHandlers() */
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/*FORM_FEED*/
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/*
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*
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* OBJECT: SMIdle
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*
|
|
* DESCRIPTION: Called every time SystemTask called. Sends DBIdle message to any
|
|
* ddev with active sessions. Also checks global list of asynchronous
|
|
* parameter blocks to see if it needs to perform a task that cannot be
|
|
* done at interrupt time.
|
|
*
|
|
* INPUTS: None.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 04-05-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMIdle()
|
|
{
|
|
register ddevElemHndl ddevH;
|
|
register DBAsyncParmBlkPtr myPB;
|
|
register asyncVarsPtr myVars;
|
|
register short rc;
|
|
snarfGlobPtr glob;
|
|
DBAsyncParmBlkPtr appPB, nextPB;
|
|
DDEVParams params;
|
|
|
|
glob = GetGlobals();
|
|
|
|
/* get first ddev in list */
|
|
ddevH = glob->ddevRoot;
|
|
|
|
/****************************************/
|
|
/* send idle messages to all open ddevs */
|
|
/****************************************/
|
|
while (ddevH != NULL)
|
|
{
|
|
/* see if this ddev has any open sessions */
|
|
if ((**ddevH).sessRoot != NULL)
|
|
{
|
|
/* yes, send it an idle message */
|
|
|
|
/* fill in parameter block for DBIdle */
|
|
ClearParams(params);
|
|
params.message = kDBIdle;
|
|
|
|
/* ignore any errors */
|
|
(void)CallDDEV(ddevH, ¶ms);
|
|
}
|
|
|
|
/* get next ddev in list */
|
|
ddevH = (**ddevH).next;
|
|
}
|
|
|
|
/***************************************/
|
|
/* go through list of parameter blocks */
|
|
/***************************************/
|
|
myPB = glob->pbRoot;
|
|
|
|
while (myPB != NULL)
|
|
{
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* get next pb here in case we dispose of the current one */
|
|
nextPB = myVars->next;
|
|
|
|
if (!(myVars->executing))
|
|
{
|
|
/* current pb is done executing */
|
|
if (!myVars->highlevel)
|
|
{
|
|
/********************************/
|
|
/* low-level call has completed */
|
|
/********************************/
|
|
|
|
/* have to return parameters and do additional
|
|
cleanup for some calls */
|
|
switch (myVars->currAction)
|
|
{
|
|
case kDBInit:
|
|
/* finish up using common code */
|
|
SMInitComplete(myVars->ddevH, myVars->sessIDPtr,
|
|
myVars->params->sessID, myVars->firstsess);
|
|
break;
|
|
|
|
case kDBEnd:
|
|
if (myPB->result == noErr)
|
|
{
|
|
/* session ended OK */
|
|
/* finish up using common code */
|
|
myPB->result = SMEndComplete(myVars->snarf);
|
|
}
|
|
break;
|
|
|
|
case kDBGetConnInfo:
|
|
/* return returnedID, version, start, and state */
|
|
|
|
/*
|
|
Note that the returnedID in the DDEVParams is the
|
|
ddev's session ID, which we have to convert
|
|
to a global Snarf ID.
|
|
*/
|
|
if (myVars->returnedIDPtr != NULL)
|
|
{
|
|
if (myPB->result == noErr) /* fix for bug DSL-008 */
|
|
{
|
|
/* ddev thinks it returned a valid session ID */
|
|
*(myVars->returnedIDPtr) =
|
|
ConvertSessIDToSnarfID(myVars->params->returnedID,
|
|
myVars->ddevH);
|
|
|
|
if (*(myVars->returnedIDPtr) == NULL)
|
|
{
|
|
/*
|
|
The session ID returned by the ddev does
|
|
not match any of the active sessions we
|
|
have for it. Hopefully, this should
|
|
never happen.
|
|
*/
|
|
|
|
myPB->result = rcDBBadSessID;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (myVars->versionPtr != NULL)
|
|
{
|
|
*(myVars->versionPtr) = myVars->params->version;
|
|
}
|
|
|
|
if (myVars->startPtr != NULL)
|
|
{
|
|
*(myVars->startPtr) = myVars->params->start;
|
|
}
|
|
|
|
if (myVars->statePtr != NULL)
|
|
{
|
|
*(myVars->statePtr) = myVars->params->state;
|
|
}
|
|
break;
|
|
|
|
case kDBGetSessionNum:
|
|
/* return sessNum */
|
|
*(myVars->sessNumPtr) = myVars->params->sessNum;
|
|
break;
|
|
|
|
case kDBGetErr:
|
|
/* return err1 and err2 */
|
|
if (myVars->err1Ptr != NULL)
|
|
{
|
|
*(myVars->err1Ptr) = myVars->params->err1;
|
|
}
|
|
|
|
if (myVars->err2Ptr != NULL)
|
|
{
|
|
*(myVars->err2Ptr) = myVars->params->err2;
|
|
}
|
|
break;
|
|
|
|
case kDBGetItem:
|
|
/* return dataType, len, places, and flags */
|
|
if (myVars->dataTypePtr != NULL)
|
|
{
|
|
*(myVars->dataTypePtr) = myVars->params->dataType;
|
|
}
|
|
|
|
if (myVars->lenPtr != NULL)
|
|
{
|
|
*(myVars->lenPtr) = myVars->params->len;
|
|
}
|
|
|
|
if (myVars->placesPtr != NULL)
|
|
{
|
|
*(myVars->placesPtr) = myVars->params->places;
|
|
}
|
|
|
|
if (myVars->flagsPtr != NULL)
|
|
{
|
|
*(myVars->flagsPtr) = myVars->params->flags;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* copy result into application's parameter block */
|
|
appPB = myVars->asyncPB;
|
|
appPB->result = myPB->result;
|
|
|
|
/* remove pb from list */
|
|
RemovePB(myPB);
|
|
|
|
/* call application's completion routine, if any */
|
|
if (appPB->completionProc != NULL)
|
|
{
|
|
/* have to use assembly glue to get pb into A0 */
|
|
CallCompletion(appPB);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/***********************************************************/
|
|
/* high-level call has completed, call appropriate routine */
|
|
/***********************************************************/
|
|
switch (myVars->currAction)
|
|
{
|
|
/* DBStartQuery actions */
|
|
case kDBInit:
|
|
rc = InitDoneProc(myPB, myVars);
|
|
break;
|
|
|
|
case kDBSend:
|
|
rc = SendDoneProc(myPB, myVars);
|
|
break;
|
|
|
|
case kDBExec:
|
|
rc = ExecDoneProc(myPB, myVars);
|
|
/* always go to done from here */
|
|
rc = AllDoneProc(myPB, myVars);
|
|
break;
|
|
|
|
/* DBGetQueryResults actions */
|
|
case kDBState:
|
|
rc = StateDoneProc(myPB, myVars);
|
|
break;
|
|
|
|
case kDBGetItem:
|
|
rc = GetItemDoneProc(myPB, myVars);
|
|
break;
|
|
|
|
/* all processing complete */
|
|
/* this is only from GetItemDoneProc */
|
|
case kAllDone:
|
|
/* let AllDoneProc know what to clean up */
|
|
myVars->currAction = kDBGetItem;
|
|
rc = AllDoneProc(myPB, myVars);
|
|
break;
|
|
|
|
} /* switch (myVars->currAction) */
|
|
|
|
if (rc != noErr)
|
|
{
|
|
/* error occurred someplace, so we're done */
|
|
(void)AllDoneProc(myPB, myVars);
|
|
}
|
|
} /* if (!myVars->highlevel) */
|
|
|
|
} /* if (!(myVars->executing)) */
|
|
|
|
myPB = nextPB;
|
|
|
|
} /* while (myPB != NULL) */
|
|
|
|
return(noErr);
|
|
|
|
} /* SMIdle() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMOpen
|
|
*
|
|
* DESCRIPTION: Called to send a DBOpen to ddev when first session is initiated.
|
|
* This is always a synchronous call. Opens file, gets and detaches
|
|
* resource, calls ddev, and closes file.
|
|
*
|
|
* INPUTS: ddevH: Handle to ddevElem with info.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Errors from opening resource file, getting ddev resource,
|
|
* detaching ddev resource, and CallDDEV.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 05-23-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
SMOpen(ddevElemHndl ddevH)
|
|
{
|
|
register DDEVPtr *ddevRes;
|
|
register OSErr rc;
|
|
register short currResFile;
|
|
short currVol, refNum = -1;
|
|
short vRefNum;
|
|
long dirID;
|
|
DDEVParams params;
|
|
WDPBRec pb;
|
|
|
|
/* save current file */
|
|
currResFile = CURMAP;
|
|
|
|
/* open ddev file */
|
|
rc = OpenDDEVFile(ddevH, &refNum);
|
|
if (rc == noErr)
|
|
{
|
|
/* file open, get the resource */
|
|
ddevRes = (DDEVPtr*)Get1Resource(DDEVRESTYPE, kDDEVID);
|
|
|
|
if (ddevRes != NULL)
|
|
{
|
|
/* detach ddev resource */
|
|
DetachResource((Handle)ddevRes);
|
|
rc = RESERR;
|
|
}
|
|
else
|
|
{
|
|
/* couldn't get ddev */
|
|
/* note that GetResource does not set ResErr for resNotFound! */
|
|
if ((rc = RESERR) == noErr)
|
|
rc = resNotFound;
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* lock down ddev code always */
|
|
HLock((Handle)ddevRes);
|
|
|
|
/* save handle to ddev in ddevH */
|
|
(**ddevH).ddev = ddevRes;
|
|
|
|
/* save old volume and set to ddev's volume */
|
|
(void)GetVol(NULL, &currVol);
|
|
|
|
/********************************************/
|
|
/* ¥WARNING¥ ¥WARNING¥ ¥WARNING¥ ¥WARNING¥ */
|
|
/* */
|
|
/* The following is kind of bogus, but it */
|
|
/* is probably better than doing an HSetVol.*/
|
|
/* We need a working directory, though, to */
|
|
/* do a normal SetVol. Darin suggested not */
|
|
/* closing it when we're done. */
|
|
/* */
|
|
/* ¥WARNING¥ ¥WARNING¥ ¥WARNING¥ ¥WARNING¥ */
|
|
/********************************************/
|
|
|
|
/* get vRefNum and dirID of ddev folder */
|
|
GetDDEVFolder(&vRefNum, &dirID);
|
|
|
|
/* open a working directory */
|
|
pb.ioCompletion = 0L;
|
|
pb.ioNamePtr = 0L;
|
|
pb.ioVRefNum = vRefNum;
|
|
pb.ioWDDirID = dirID;
|
|
pb.ioWDProcID = 'ERIK'; /* Darin says use this */
|
|
|
|
rc = PBOpenWD(&pb, false);
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* opened working directory */
|
|
(void)SetVol(NULL, pb.ioVRefNum);
|
|
|
|
/* set up parameters for open */
|
|
ClearParams(params);
|
|
params.message = kDBOpen;
|
|
|
|
/* call ddev - DBOpen */
|
|
rc = CallDDEV(ddevH, ¶ms);
|
|
|
|
/* restore current volume */
|
|
(void)SetVol(NULL, currVol);
|
|
}
|
|
}
|
|
|
|
if ((rc != noErr) && (ddevRes != NULL))
|
|
{
|
|
/* error opening ddev, dispose of everything */
|
|
|
|
/* dispose of ddev code (no need to unlock it) */
|
|
DisposHandle((Handle)ddevRes);
|
|
(**ddevH).ddev = NULL;
|
|
|
|
/* no more storage */
|
|
(**ddevH).ddevStorage = NULL;
|
|
}
|
|
}
|
|
|
|
/* clean up */
|
|
if (refNum != -1)
|
|
CloseResFile(refNum);
|
|
UseResFile(currResFile);
|
|
|
|
return(rc);
|
|
|
|
} /* SMOpen() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMClose
|
|
*
|
|
* DESCRIPTION: Called to send a DBClose to ddev when last session has ended.
|
|
* Disposes of ddev code. This is always a synchronous call.
|
|
*
|
|
* INPUTS: ddevH: Handle to ddevElem with info.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Return codes from CallDDEV, DisposHandle.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 05-23-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
SMClose(ddevElemHndl ddevH)
|
|
{
|
|
register short rc;
|
|
DDEVParams params;
|
|
|
|
ClearParams(params);
|
|
params.message = kDBClose;
|
|
|
|
/* call ddev - DBClose */
|
|
rc = CallDDEV(ddevH, ¶ms);
|
|
|
|
/* dispose of ddev code (no need to unlock it) */
|
|
DisposHandle((Handle)(**ddevH).ddev);
|
|
(**ddevH).ddev = NULL;
|
|
|
|
/* no more storage */
|
|
(**ddevH).ddevStorage = NULL;
|
|
|
|
/* report errors from DBClose first before MemError */
|
|
if (rc == noErr)
|
|
{
|
|
/* DBClose OK, so report any error from DisposHandle */
|
|
rc = MemError();
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMClose() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMInit
|
|
*
|
|
* DESCRIPTION: DBInit routine. Searches for specified ddev, opens it if
|
|
* this is the first session for it (sending it a DBOpen message),
|
|
* sends it a DBInit message, and calls common code which inserts a
|
|
* new session and snarf id into the session and snarf id lists.
|
|
*
|
|
* INPUTS: sessID: Pointer to variable for session ID.
|
|
* ddevName: Corresponds to 'STR ' 128 in ddev.
|
|
* host: Host name.
|
|
* user: User name.
|
|
* passwd: Password.
|
|
* connStr: Connection string.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: sessID: Pointer to filled in session ID.
|
|
*
|
|
* RETURNS: rcDBBadDDEV
|
|
* rcDBAsyncNotSupp
|
|
* Errors from SMOpen and CallDDEV.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-23-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMInit(long *sessID, const Str63 ddevName, const Str255 host,
|
|
const Str255 user, const Str255 password, const Str255 connStr, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register ddevElemHndl ddevH;
|
|
register asyncVarsPtr myVars;
|
|
register OSErr rc = noErr;
|
|
register Boolean firstsess;
|
|
snarfGlobPtr glob;
|
|
DBAsyncParmBlkPtr myPB;
|
|
DDEVParams params;
|
|
|
|
/* assume no session will come up */
|
|
*sessID = 0;
|
|
|
|
glob = GetGlobals();
|
|
|
|
/* look for ddevElem with specified ddevName, rebuilding list if necessary */
|
|
ddevH = FindAndBuildDDEV((char*)ddevName, &(glob->ddevRoot));
|
|
|
|
if (ddevH == NULL)
|
|
{
|
|
/* bad ddev name */
|
|
rc = rcDBBadDDEV;
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* see if ddev code loaded, if not, then it needs a DBOpen call */
|
|
firstsess = ((**ddevH).ddev == NULL);
|
|
|
|
if (firstsess)
|
|
{
|
|
/* special case - check for async here so we don't send open */
|
|
if (asyncPB && !(**ddevH).canAsync)
|
|
{
|
|
/* ddev doesn't support async, but DBInit called async */
|
|
rc = rcDBAsyncNotSupp;
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* call ddev with open message */
|
|
rc = SMOpen(ddevH);
|
|
}
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* fill in parameter block for DBInit */
|
|
ClearParams(params);
|
|
params.message = kDBInit;
|
|
params.host = host;
|
|
params.user = user;
|
|
params.password = password;
|
|
params.connStr = connStr;
|
|
|
|
/* check for asynchronous call */
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(¶ms, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* keep track if first session for ddev */
|
|
myVars->firstsess = firstsess;
|
|
|
|
/* keep track of session ID */
|
|
myVars->sessIDPtr = sessID;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* return immediately */
|
|
return(CallDDEV(ddevH, myVars->params));
|
|
}
|
|
|
|
/* call ddev synchronously - DBInit */
|
|
rc = CallDDEV(ddevH, ¶ms);
|
|
|
|
/* finish up using common code */
|
|
SMInitComplete(ddevH, sessID, params.sessID, firstsess);
|
|
}
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMInit() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMInitComplete
|
|
*
|
|
* DESCRIPTION: Called after a synchronous or asynchronous DBInit call completes.
|
|
* Allows code sharing. If DBInit returned a session ID, inserts a
|
|
* new session and snarf id into the session and snarf id lists.
|
|
*
|
|
* Declared as a pascal function because compiler generates smaller code.
|
|
*
|
|
* INPUTS: ddevH: Handle to ddev called.
|
|
* sessIDPtr: Pointer to return session ID.
|
|
* sessID: Session ID returned by ddev.
|
|
* firstsess: If TRUE, this is the first session for this ddev.
|
|
*
|
|
* OUTPUTS: sessIDPtr: Pointer to filled in session ID.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 09-07-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal void
|
|
SMInitComplete(ddevElemHndl ddevH, long *sessIDPtr, long sessID,
|
|
Boolean firstsess)
|
|
{
|
|
register long snarfID;
|
|
snarfGlobPtr glob;
|
|
sessElem **sess;
|
|
snarfSessElem **snarf;
|
|
char currState;
|
|
|
|
/*
|
|
Note that we can't depend on the rc from the ddev
|
|
to determine if a session is up. CL/1, for example,
|
|
will always return a session ID, even if an error occurs.
|
|
*/
|
|
|
|
if (sessID == 0)
|
|
{
|
|
/* ddev didn't return a session ID, so definitely no session */
|
|
if (firstsess)
|
|
{
|
|
/* first session for this ddev, so close it */
|
|
(void)SMClose(ddevH);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* ddev returned a session ID, but there may still be an error */
|
|
|
|
/* set up cell for session */
|
|
sess = (sessElemHndl)NewHandleSysClear(sizeof(sessElem));
|
|
(**sess).parent = ddevH;
|
|
(**sess).sessID = sessID;
|
|
|
|
/* insert it into the list of sessions for this ddev */
|
|
MyHLock((Handle)ddevH, &currState);
|
|
InsertSessionCell(&((**ddevH).sessRoot), sess);
|
|
HSetState((Handle)ddevH, currState);
|
|
|
|
/* find a unique snarf session ID for this session */
|
|
glob = GetGlobals();
|
|
snarfID = GetUniqueSnarfID(glob->snarfRoot);
|
|
|
|
/* set up snarf cell */
|
|
snarf = (snarfSessElemHndl)NewHandleSysClear(sizeof(snarfSessElem));
|
|
(**snarf).snarfID = snarfID;
|
|
/* (**snarf).processID = ?; */
|
|
(**snarf).sess = sess;
|
|
|
|
/* insert it into the global list of sessions */
|
|
InsertSnarfCell(&(glob->snarfRoot), snarf);
|
|
|
|
/* return the ID */
|
|
*sessIDPtr = snarfID;
|
|
}
|
|
|
|
} /* SMInitComplete() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMEnd
|
|
*
|
|
* DESCRIPTION: DBEnd routine. Calls DBEnd and, if successful, calls common code
|
|
* which removes session id and snarf id from the lists, and, if the
|
|
* last session for this ddev was just ended, calls SMClose to send
|
|
* the ddev a DBClose message.
|
|
*
|
|
* INPUTS: sessID: Session ID.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Errors from SMGeneric and SMEndComplete.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-26-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMEnd(long sessID, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register short rc;
|
|
snarfGlobPtr glob;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
DDEVParams params;
|
|
|
|
glob = GetGlobals();
|
|
|
|
/* fill in parameter block for DBEnd */
|
|
ClearParams(params);
|
|
params.message = kDBEnd;
|
|
|
|
/* check for asynchronous call */
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(¶ms, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* keep track of snarf session cell */
|
|
myVars->snarf = FindSnarfID(sessID, glob->snarfRoot);
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* return immediately */
|
|
rc = SMGeneric(sessID, myPB, myVars->params);
|
|
}
|
|
else
|
|
{
|
|
/* call ddev synchronously - DBEnd */
|
|
if ((rc = SMGeneric(sessID, NULL, ¶ms)) == noErr)
|
|
{
|
|
/* session ended OK, clean up lists */
|
|
|
|
/* finish up using common code */
|
|
rc = SMEndComplete(FindSnarfID(sessID, glob->snarfRoot));
|
|
}
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMEnd() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMEndComplete
|
|
*
|
|
* DESCRIPTION: Called after a synchronous or asynchronous DBEnd call completes.
|
|
* Allows code sharing. This routine should only be called if DBEnd
|
|
* was successful. Removes session id and snarf id from the lists,
|
|
* and, if the last session for this ddev was just ended, calls
|
|
* SMClose to send the ddev a DBClose message.
|
|
*
|
|
* INPUTS: snarf: Snarf session cell that was just ended.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Return codes from SMClose.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 09-09-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
SMEndComplete(snarfSessElemHndl snarf)
|
|
{
|
|
register short rc = noErr;
|
|
snarfGlobPtr glob;
|
|
ddevElemHndl ddevH;
|
|
ddevElemPtr ddevP;
|
|
snarfSessElemHndl prevsnarf;
|
|
sessElemHndl sess, prevsess;
|
|
ResultsRecord *oldResults;
|
|
char currState;
|
|
|
|
glob = GetGlobals();
|
|
|
|
/* delete any leftover results */
|
|
if ((oldResults = (**snarf).oldResults) != NULL)
|
|
{
|
|
DisposeResultsRecord(oldResults);
|
|
DisposPtr((Ptr)oldResults);
|
|
}
|
|
|
|
/* get session and ddev info */
|
|
sess = (**snarf).sess;
|
|
ddevH = (**sess).parent;
|
|
|
|
MyHLock((Handle)ddevH, &currState);
|
|
ddevP = *ddevH;
|
|
|
|
/* delete snarf element */
|
|
if (snarf == glob->snarfRoot)
|
|
{
|
|
/* deleting root */
|
|
glob->snarfRoot = (**snarf).next;
|
|
}
|
|
else
|
|
{
|
|
/* find previous snarf element */
|
|
prevsnarf = glob->snarfRoot;
|
|
|
|
while ((**prevsnarf).next != snarf)
|
|
{
|
|
prevsnarf = (**prevsnarf).next;
|
|
}
|
|
|
|
/* fix list */
|
|
(**prevsnarf).next = (**snarf).next;
|
|
}
|
|
|
|
DisposHandle((Handle)snarf);
|
|
|
|
/* delete session element */
|
|
if (sess == ddevP->sessRoot)
|
|
{
|
|
/* deleting root */
|
|
ddevP->sessRoot = (**sess).next;
|
|
}
|
|
else
|
|
{
|
|
/* find previous sess element */
|
|
prevsess = ddevP->sessRoot;
|
|
|
|
while ((**prevsess).next != sess)
|
|
{
|
|
prevsess = (**prevsess).next;
|
|
}
|
|
|
|
/* fix list */
|
|
(**prevsess).next = (**sess).next;
|
|
}
|
|
|
|
DisposHandle((Handle)sess);
|
|
|
|
/* finally, check if last session for this ddev was just ended */
|
|
if (ddevP->sessRoot == NULL)
|
|
{
|
|
/* yes, need to send close message and close ddev */
|
|
rc = SMClose(ddevH);
|
|
}
|
|
|
|
HSetState((Handle)ddevH, currState);
|
|
|
|
return(rc);
|
|
|
|
} /* SMEndComplete() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMGetConnInfo
|
|
*
|
|
* DESCRIPTION: DBGetConnInfo routine. If sessID is specified, returns
|
|
* ddevName. Otherwise, tries to find ddev with specified
|
|
* name. After call is made, if sessID is specified, just
|
|
* returns it in returnedID, otherwise converts session ID
|
|
* returned by ddev to Snarf ID.
|
|
*
|
|
* INPUTS: sessID: Session ID. If NULL, sessNum and ddevName must
|
|
* be specified.
|
|
* sessNum: Session number. Only used if sessID is NULL.
|
|
* returnedID: Pointer to variable for returned session ID.
|
|
* version: Pointer to variable for version.
|
|
* ddevName: Name of ddev. Only used if sessID is NULL.
|
|
* host: Pointer to variable for host (optional).
|
|
* user: Pointer to variable for user (optional).
|
|
* network: Pointer to variable for network (optional).
|
|
* connStr: Pointer to variable for connStr (optional).
|
|
* start: Pointer to variable for start time (optional).
|
|
* state: Pointer to variable for state (optional).
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: returnedID: Pointer to filled in returned session ID.
|
|
* version: Pointer to filled in version.
|
|
* ddevName: Name of ddev. Only set if sessID is NULL.
|
|
* host: Pointer to filled in host.
|
|
* user: Pointer to filled in user.
|
|
* network: Pointer to filled in network.
|
|
* connStr: Pointer to filled in connStr.
|
|
* start: Pointer to filled in start time.
|
|
* state: Pointer to filled in state.
|
|
*
|
|
* RETURNS: rcDBBadDDEV
|
|
* rcDBBadSessID
|
|
* rcDBBadSessNum
|
|
* Errors from CallDDEV and SMGeneric.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-24-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMGetConnInfo(long sessID, short sessNum, long *returnedID, long *version,
|
|
Str63 ddevName, Str255 host, Str255 user, Str255 network, Str255 connStr,
|
|
long *start, OSErr *state, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register short rc = noErr;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
snarfGlobPtr glob;
|
|
ddevElemHndl ddevH;
|
|
snarfSessElemHndl snarf;
|
|
sessElemHndl sess;
|
|
char *theName;
|
|
Boolean isSessNumCall;
|
|
DDEVParams params;
|
|
|
|
glob = GetGlobals();
|
|
|
|
/* special case - if session ID is specified, need to return ddev name */
|
|
if (sessID != 0)
|
|
{
|
|
/* not being called based on session number */
|
|
isSessNumCall = false;
|
|
|
|
/* find snarf ID */
|
|
if ((snarf = FindSnarfID(sessID, glob->snarfRoot)) == NULL)
|
|
{
|
|
/* bad session ID */
|
|
rc = rcDBBadSessID;
|
|
}
|
|
else
|
|
{
|
|
/* got snarf ID, get session and ddev info */
|
|
sess = (**snarf).sess;
|
|
ddevH = (**sess).parent;
|
|
|
|
/* get pointer to ddev name */
|
|
theName = (**ddevH).name;
|
|
|
|
/* return ddev name */
|
|
if (ddevName != NULL)
|
|
pstrcpy(ddevName, theName);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* session ID not specifed, need to use sessNum and ddevName */
|
|
isSessNumCall = true;
|
|
|
|
/* assume failure */
|
|
rc = rcDBBadDDEV; /* fix for bug DSL-008 */
|
|
|
|
/* look for ddevElem with specified ddevName, rebuilding list if necessary */
|
|
ddevH = FindAndBuildDDEV((char*)ddevName, &(glob->ddevRoot));
|
|
|
|
if (ddevH != NULL)
|
|
{
|
|
/* found ddev, see if it is loaded */
|
|
if ((**ddevH).ddev != NULL)
|
|
{
|
|
/* yes, we can call it */
|
|
rc = noErr;
|
|
}
|
|
else
|
|
{
|
|
/* ddev in list, but not loaded */
|
|
rc = rcDBBadSessNum; /* fix for bug DSL-012 */
|
|
}
|
|
}
|
|
|
|
/* else the ddev doesn't exist, so rcDBBadDDEV is the right error */
|
|
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* fill in parameter block for DBGetConnInfo */
|
|
ClearParams(params);
|
|
params.message = kDBGetConnInfo;
|
|
params.sessNum = sessNum;
|
|
params.host = host;
|
|
params.user = user;
|
|
params.network = network;
|
|
params.connStr = connStr;
|
|
|
|
/* check for asynchronous call */
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(¶ms, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* keep track of returnedID, version, start, and state pointers */
|
|
myVars->returnedIDPtr = returnedID;
|
|
myVars->versionPtr = version;
|
|
myVars->startPtr = start;
|
|
myVars->statePtr = state;
|
|
|
|
/* set current action */
|
|
myVars->currAction = params.message;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* return immediately */
|
|
if (isSessNumCall)
|
|
{
|
|
/* no sessID, have to CallDDEV ourselves */
|
|
rc = CallDDEV(ddevH, myVars->params);
|
|
}
|
|
else
|
|
{
|
|
rc = SMGeneric(sessID, myPB, myVars->params);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* call ddev synchronously - DBGetConnInfo */
|
|
if (isSessNumCall)
|
|
{
|
|
/* no sessID, have to CallDDEV ourselves */
|
|
rc = CallDDEV(ddevH, ¶ms);
|
|
}
|
|
else
|
|
{
|
|
rc = SMGeneric(sessID, NULL, ¶ms);
|
|
}
|
|
|
|
/* see if we can return other parameters */
|
|
if (isSessNumCall || (rc != rcDBBadSessID))
|
|
{
|
|
/* ddev was invoked */
|
|
|
|
if (returnedID != NULL)
|
|
{
|
|
/*
|
|
Note that the returnedID in the DDEVParams is the
|
|
ddev's session ID, which we have to convert
|
|
to a global Snarf ID.
|
|
*/
|
|
if (rc == noErr) /* fix for bug DSL-008 */
|
|
{
|
|
/* ddev thinks it returned a valid session ID */
|
|
*returnedID = ConvertSessIDToSnarfID(params.returnedID, ddevH);
|
|
if (*returnedID == NULL)
|
|
{
|
|
/*
|
|
The session ID returned by the ddev does
|
|
not match any of the active sessions we
|
|
have for it. Hopefully, this should
|
|
never happen.
|
|
*/
|
|
rc = rcDBBadSessID;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* return version, start, and state */
|
|
if (version != NULL)
|
|
{
|
|
*version = params.version;
|
|
}
|
|
|
|
if (start != NULL)
|
|
{
|
|
*start = params.start;
|
|
}
|
|
|
|
if (state != NULL)
|
|
{
|
|
*state = params.state;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMGetConnInfo() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMGetSessionNum
|
|
*
|
|
* DESCRIPTION: DBGetSessionNum routine. Calls DBGetSessionNum with specified
|
|
* parameters.
|
|
*
|
|
* INPUTS: sessID: Session ID.
|
|
* sessNum: Pointer to variable for session number.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: sessNum: Pointer to filled in session number.
|
|
*
|
|
* RETURNS: Errors from SMGeneric.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-24-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMGetSessionNum(long sessID, short *sessNum, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register short rc;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
DDEVParams params;
|
|
|
|
/* fill in parameter block for DBGetErr */
|
|
ClearParams(params);
|
|
params.message = kDBGetSessionNum;
|
|
|
|
/* check for asynchronous call */
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(¶ms, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* keep track of session number pointer */
|
|
myVars->sessNumPtr = sessNum;
|
|
|
|
/* set current action */
|
|
myVars->currAction = params.message;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* return immediately */
|
|
rc = SMGeneric(sessID, myPB, myVars->params);
|
|
}
|
|
else
|
|
{
|
|
|
|
/* call ddev synchronously - DBGetSessionNum */
|
|
rc = SMGeneric(sessID, NULL, ¶ms);
|
|
|
|
/* see if we can return other parameters */
|
|
if (rc != rcDBBadSessID)
|
|
{
|
|
/* ddev was invoked */
|
|
/* return sessNum */
|
|
*sessNum = params.sessNum;
|
|
}
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMGetSessionNum() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMSend
|
|
*
|
|
* DESCRIPTION: DBSend routine. Calls DBSend with specified parameters.
|
|
*
|
|
* INPUTS: sessID: Session ID.
|
|
* text: Pointer to text to send.
|
|
* len: Length of text.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Errors from SMGeneric.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-27-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMSend(long sessID, char *text, short len, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register short rc;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
DDEVParams params;
|
|
|
|
/* fill in parameter block for DBSend */
|
|
ClearParams(params);
|
|
params.message = kDBSend;
|
|
params.buffer = text;
|
|
params.len = len;
|
|
|
|
/* check for asynchronous call */
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(¶ms, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* return immediately */
|
|
rc = SMGeneric(sessID, myPB, myVars->params);
|
|
}
|
|
else
|
|
{
|
|
/* call ddev synchronously - DBSend */
|
|
rc = SMGeneric(sessID, NULL, ¶ms);
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMSend() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMSendItem
|
|
*
|
|
* DESCRIPTION: DBSendItem routine. Calls DBSendItem with specified parameters.
|
|
*
|
|
* INPUTS: sessID: Session ID.
|
|
* dataType: Type of data to send.
|
|
* len: Length of data.
|
|
* places: Places in data.
|
|
* flags: Flags for data.
|
|
* buffer: Pointer to data to send.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Errors from SMGeneric.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-24-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMSendItem(long sessID, DBType dataType, short len, short places, short flags,
|
|
Ptr buffer, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register short rc;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
DDEVParams params;
|
|
|
|
/* fill in parameter block for DBGetItem */
|
|
ClearParams(params);
|
|
params.message = kDBSendItem;
|
|
params.buffer = buffer;
|
|
params.dataType = dataType;
|
|
params.len = len;
|
|
params.places = places;
|
|
params.flags = flags;
|
|
|
|
/* check for asynchronous call */
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(¶ms, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* return immediately */
|
|
rc = SMGeneric(sessID, myPB, myVars->params);
|
|
}
|
|
else
|
|
{
|
|
/* call ddev synchronously - DBSendItem */
|
|
rc = SMGeneric(sessID, NULL, ¶ms);
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMSendItem() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMExec
|
|
*
|
|
* DESCRIPTION: DBExec routine. Calls DBExec with specified parameters.
|
|
*
|
|
* INPUTS: sessID: Session ID.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Errors from SMGeneric.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-27-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMExec(long sessID, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register short rc;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
DDEVParams params;
|
|
|
|
/* fill in parameter block for DBExec */
|
|
ClearParams(params);
|
|
params.message = kDBExec;
|
|
|
|
/* check for asynchronous call */
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(¶ms, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* return immediately */
|
|
rc = SMGeneric(sessID, myPB, myVars->params);
|
|
}
|
|
else
|
|
{
|
|
/* call ddev synchronously - DBExec */
|
|
rc = SMGeneric(sessID, NULL, ¶ms);
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMExec() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMState
|
|
*
|
|
* DESCRIPTION: DBState routine. Calls DBState with specified parameters.
|
|
*
|
|
* INPUTS: sessID: Session ID.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Errors from SMGeneric.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-27-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMState(long sessID, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register short rc;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
DDEVParams params;
|
|
|
|
/* fill in parameter block for DBState */
|
|
ClearParams(params);
|
|
params.message = kDBState;
|
|
|
|
/* check for asynchronous call */
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(¶ms, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* return immediately */
|
|
rc = SMGeneric(sessID, myPB, myVars->params);
|
|
}
|
|
else
|
|
{
|
|
/* call ddev synchronously - DBState */
|
|
rc = SMGeneric(sessID, NULL, ¶ms);
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMState() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMGetErr
|
|
*
|
|
* DESCRIPTION: DBGetErr routine. Calls DBGetErr with specified parameters.
|
|
*
|
|
* INPUTS: sessID: Session ID.
|
|
* err1: Pointer to error 1 (optional).
|
|
* err2: Pointer to error 2 (optional).
|
|
* item1: Pointer to item1.
|
|
* item2: Pointer to item2.
|
|
* errorMsg: Pointer to errorMsg.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: err1: Modified.
|
|
* err2: Modified.
|
|
* item1: Modified.
|
|
* item2: Modified.
|
|
* errorMsg: Modified.
|
|
*
|
|
* RETURNS: Errors from SMGeneric.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-27-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMGetErr(long sessID, long *err1, long *err2, Str255 item1,
|
|
Str255 item2, Str255 errorMsg, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register short rc;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
DDEVParams params;
|
|
|
|
/* fill in parameter block for DBGetErr */
|
|
ClearParams(params);
|
|
params.message = kDBGetErr;
|
|
params.item1 = item1;
|
|
params.item2 = item2;
|
|
params.errorMsg = errorMsg;
|
|
|
|
/* check for asynchronous call */
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(¶ms, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* keep track of error pointers */
|
|
myVars->err1Ptr = err1;
|
|
myVars->err2Ptr = err2;
|
|
|
|
/* set current action */
|
|
myVars->currAction = params.message;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* return immediately */
|
|
rc = SMGeneric(sessID, myPB, myVars->params);
|
|
}
|
|
else
|
|
{
|
|
/* call ddev synchronously - DBGetErr */
|
|
rc = SMGeneric(sessID, NULL, ¶ms);
|
|
|
|
/* see if we can return other parameters */
|
|
if (rc != rcDBBadSessID)
|
|
{
|
|
/* ddev was invoked */
|
|
/* return err1 and err2 */
|
|
if (err1 != NULL)
|
|
{
|
|
*err1 = params.err1;
|
|
}
|
|
|
|
if (err2 != NULL)
|
|
{
|
|
*err2 = params.err2;
|
|
}
|
|
}
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMGetErr() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMBreak
|
|
*
|
|
* DESCRIPTION: DBBreak routine. Calls DBBreak with specified parameters.
|
|
*
|
|
* INPUTS: sessID: Session ID.
|
|
* abort: How to break.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Errors from SMGeneric.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-27-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMBreak(long sessID, Boolean abort, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register short rc;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
DDEVParams params;
|
|
|
|
/* fill in parameter block for DBBreak */
|
|
ClearParams(params);
|
|
params.message = kDBBreak;
|
|
params.abort = abort;
|
|
|
|
/* check for asynchronous call */
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(¶ms, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* return immediately */
|
|
rc = SMGeneric(sessID, myPB, myVars->params);
|
|
}
|
|
else
|
|
{
|
|
/* call ddev synchronously - DBBreak */
|
|
rc = SMGeneric(sessID, NULL, ¶ms);
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMBreak() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMGetItem
|
|
*
|
|
* DESCRIPTION: DBGetItem routine. Calls DBGetItem with specified parameters.
|
|
*
|
|
* INPUTS: sessID: Session ID.
|
|
* timeout: How long to wait for data to be available.
|
|
* dataType: Pointer to variable with type of data expected (optional).
|
|
* len: Pointer to variable for length (optional).
|
|
* places: Pointer to variable for places (optional).
|
|
* flags: Pointer to variable for flags (optional).
|
|
* buffer: Pointer for data to be returned (optional).
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: dataType: Pointer to filled in data type.
|
|
* len: Pointer to filled in length.
|
|
* places: Pointer to filled in places.
|
|
* flags: Pointer to filled in flags.
|
|
* buffer: Pointer filled in with data.
|
|
*
|
|
* RETURNS: Errors from SMGeneric.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-24-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMGetItem(long sessID, long timeout, DBType *dataType, short *len, short *places,
|
|
short *flags, Ptr buffer, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register short rc;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
DDEVParams params;
|
|
|
|
/* fill in parameter block for DBGetItem */
|
|
ClearParams(params);
|
|
params.message = kDBGetItem;
|
|
params.timeout = timeout;
|
|
params.buffer = buffer;
|
|
if (dataType != NULL)
|
|
{
|
|
params.dataType = *dataType;
|
|
}
|
|
|
|
if (len != NULL)
|
|
{
|
|
params.len = *len;
|
|
}
|
|
|
|
if (places != NULL)
|
|
{
|
|
params.places = *places;
|
|
}
|
|
|
|
/* check for asynchronous call */
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(¶ms, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* keep track of len, dataType, places, and flags pointers */
|
|
myVars->lenPtr = len;
|
|
myVars->dataTypePtr = dataType;
|
|
myVars->placesPtr = places;
|
|
myVars->flagsPtr = flags;
|
|
|
|
/* set current action */
|
|
myVars->currAction = params.message;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* return immediately */
|
|
rc = SMGeneric(sessID, myPB, myVars->params);
|
|
}
|
|
else
|
|
{
|
|
/* call ddev synchronously - DBGetItem */
|
|
rc = SMGeneric(sessID, NULL, ¶ms);
|
|
|
|
/* see if we can return other parameters */
|
|
if (rc != rcDBBadSessID)
|
|
{
|
|
/* ddev was invoked */
|
|
/* return len, dataType, places, and flags */
|
|
if (len != NULL)
|
|
{
|
|
*len = params.len;
|
|
}
|
|
|
|
if (dataType != NULL)
|
|
{
|
|
*dataType = params.dataType;
|
|
}
|
|
|
|
if (places != NULL)
|
|
{
|
|
*places = params.places;
|
|
}
|
|
|
|
if (flags != NULL)
|
|
{
|
|
*flags = params.flags;
|
|
}
|
|
}
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMGetItem() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMUnGetItem
|
|
*
|
|
* DESCRIPTION: DBUnGetItem routine. Calls DBUnGetItem with specified parameters.
|
|
*
|
|
* INPUTS: sessID: Session ID.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Errors from SMGeneric.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-27-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMUnGetItem(long sessID, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register short rc;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
DDEVParams params;
|
|
|
|
/* fill in parameter block for DBUnGetItem */
|
|
ClearParams(params);
|
|
params.message = kDBUnGetItem;
|
|
|
|
/* check for asynchronous call */
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(¶ms, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* return immediately */
|
|
rc = SMGeneric(sessID, myPB, myVars->params);
|
|
}
|
|
else
|
|
{
|
|
/* call ddev synchronously - DBUnGetItem */
|
|
rc = SMGeneric(sessID, NULL, ¶ms);
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMUnGetItem() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMGetNewQuery
|
|
*
|
|
* DESCRIPTION: DBGetNewQuery routine. Gets the specified 'qrsc' resource, and
|
|
* builds a QueryRecord from it.
|
|
*
|
|
* INPUTS: queryID: ID of 'qrsc'.
|
|
* query: Pointer to variable to return query in.
|
|
*
|
|
* OUTPUTS: query: Filled in if successful.
|
|
*
|
|
* RETURNS: Errors from GetResource and NewHandle.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-28-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMGetNewQuery(short queryID, QueryHandle *query)
|
|
{
|
|
register short i;
|
|
register OSErr rc = noErr;
|
|
queryRes **resH, *resP;
|
|
QueryRecord **queryH, *queryP;
|
|
resArrayList *resList;
|
|
Handle *queries;
|
|
short *wstrID;
|
|
unsigned long resListSize = 0;
|
|
|
|
/* no query yet */
|
|
*query = NULL;
|
|
|
|
/* get the 'qrsc' */
|
|
*((short*) RomMapInsert) = mapTrue;
|
|
|
|
resH = (queryRes**)GetResource(QRSCRESTYPE, queryID);
|
|
|
|
if (!resH)
|
|
{
|
|
/* couldn't get 'qrsc' */
|
|
/* note that GetResource does not set ResError for resNotFound! */
|
|
if ((rc = RESERR) == noErr)
|
|
rc = resNotFound;
|
|
}
|
|
else
|
|
{
|
|
queryH = (QueryRecord**)NewHandleClear(sizeof(QueryRecord));
|
|
if (!queryH)
|
|
{
|
|
/* couldn't allocate QueryHandle */
|
|
rc = MemError();
|
|
|
|
/* resH is released below */
|
|
}
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
HLock((Handle)resH);
|
|
resP = *resH;
|
|
|
|
HLock((Handle)queryH);
|
|
queryP = *queryH;
|
|
|
|
/* allocate memory for queries and resources first */
|
|
if (resP->numQueries > 0) /* fix for bug DSL-010 */
|
|
{
|
|
/* there are some queries, allocate list */
|
|
queryP->queryList = (QueryListHandle)NewHandleClear(resP->numQueries *
|
|
sizeof(Handle));
|
|
rc = MemError();
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* get pointer to list of resources */
|
|
resList = (resArrayList*)(&(resP->queryArray[resP->numQueries]));
|
|
|
|
if (resList->numRes > 0) /* fix for bug DSL-010 */
|
|
{
|
|
/* there are some resources, allocate list */
|
|
|
|
/* calculate size of resList once here, as we use it for BlockMove later */
|
|
resListSize = sizeof(ResListElem) * resList->numRes;
|
|
queryP->resList = (ResListHandle)NewHandleClear(resListSize);
|
|
rc = MemError();
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* copy info into record */
|
|
queryP->version = resP->version; /* version */
|
|
queryP->id = queryID; /* id of 'qrsc' */
|
|
queryP->currQuery = resP->currQuery; /* current query offset */
|
|
queryP->numQueries = resP->numQueries; /* number of queries in array */
|
|
queryP->numRes = resList->numRes; /* number of resources in array */
|
|
|
|
/* get qdef proc - id 0 means no qdef */
|
|
if (resP->qdefID != 0)
|
|
{
|
|
*((short*) RomMapInsert) = mapTrue;
|
|
|
|
queryP->queryProc = GetResource(QDEFRESTYPE, resP->qdefID);
|
|
if (!queryP->queryProc)
|
|
{
|
|
/* couldn't get qdef */
|
|
if ((rc = RESERR) == noErr)
|
|
rc = resNotFound;
|
|
}
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* get DBInit parameters */
|
|
GetIndString(queryP->ddevName, resP->strID, DDEVOFFSET);
|
|
GetIndString(queryP->host, resP->strID, HOSTOFFSET);
|
|
GetIndString(queryP->user, resP->strID, USEROFFSET);
|
|
GetIndString(queryP->password, resP->strID, PASSWORDOFFSET);
|
|
GetIndString(queryP->connStr, resP->strID, CONNSTROFFSET);
|
|
|
|
/* set up list of queries */
|
|
HLock((Handle)queryP->queryList);
|
|
queries = *(queryP->queryList);
|
|
wstrID = &(resP->queryArray[0]);
|
|
|
|
for (i = 0; i < resP->numQueries; i++)
|
|
{
|
|
*((short*) RomMapInsert) = mapTrue;
|
|
|
|
*queries = GetResource(QUERYRESTYPE, *wstrID);
|
|
if (*queries)
|
|
{
|
|
DetachResource(*queries);
|
|
}
|
|
else
|
|
{
|
|
/* couldn't get specified resource */
|
|
if ((rc = RESERR) == noErr)
|
|
rc = resNotFound;
|
|
}
|
|
|
|
/* bump pointers */
|
|
queries++;
|
|
wstrID++;
|
|
}
|
|
HUnlock((Handle)queryP->queryList);
|
|
|
|
/*
|
|
Set up list of resources.
|
|
|
|
Since the ResListElem array in the 'qrsc' is the same
|
|
as the ResListElem array in the QueryRecord, we can
|
|
just blast it in.
|
|
*/
|
|
if (resListSize > 0)
|
|
{
|
|
BlockMove((Ptr)&(resList->res[0]), (Ptr)*(queryP->resList), resListSize);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* check for any errors */
|
|
if (rc != noErr)
|
|
{
|
|
/* an error occurred someplace, so clean up everything */
|
|
|
|
/* dispose of queryList, if necessary */
|
|
if (queryP->queryList)
|
|
{
|
|
/* queryList was allocated */
|
|
HLock((Handle)queryP->queryList);
|
|
queries = *(queryP->queryList);
|
|
|
|
/* dispose of all the 'wstr' handles */
|
|
for (i = 0; i < resP->numQueries; i++)
|
|
{
|
|
if (*queries)
|
|
{
|
|
/* dispose of the current detached 'wstr' handle */
|
|
DisposHandle(*queries);
|
|
}
|
|
|
|
/* bump pointer */
|
|
queries++;
|
|
}
|
|
|
|
/* dispose of queryList (no need to unlock it) */
|
|
DisposHandle((Handle)queryP->queryList);
|
|
}
|
|
|
|
/* dispose of resList, if necessary */
|
|
if (queryP->resList)
|
|
DisposHandle((Handle)queryP->resList);
|
|
|
|
/* finally, get rid of queryH */
|
|
DisposHandle((Handle)queryH);
|
|
}
|
|
else
|
|
{
|
|
/* everything OK */
|
|
HUnlock((Handle)queryH);
|
|
|
|
/* return query */
|
|
*query = queryH;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* no need to unlock resource before disposing */
|
|
if (resH)
|
|
ReleaseResource((Handle)resH);
|
|
|
|
return(rc);
|
|
|
|
} /* SMGetNewQuery() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMDisposeQuery
|
|
*
|
|
* DESCRIPTION: DBDisposeQuery routine. Unlocks qdef, disposes of all queries in
|
|
* queryList and querylist itself, disposes of resList, and finally
|
|
* disposes of query record itself.
|
|
*
|
|
* Questions: Correct strategy for qdef (unlock or dispose?)
|
|
* Right now, only checks for last MemError.
|
|
*
|
|
* INPUTS: query: Handle to query to dispose.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: nilHandleErr
|
|
* Errors from DisposHandle.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-28-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMDisposeQuery(QueryHandle query)
|
|
QueryHandle query;
|
|
{
|
|
register short rc = noErr;
|
|
register short i;
|
|
register QueryRecord *queryP;
|
|
register Handle *queries;
|
|
|
|
if (query == NULL)
|
|
{
|
|
/* passed in nil handle */
|
|
rc = nilHandleErr;
|
|
}
|
|
else
|
|
{
|
|
HLock((Handle)query);
|
|
queryP = *query;
|
|
|
|
/* unlock qdef */
|
|
if (queryP->queryProc != NULL)
|
|
{
|
|
HUnlock(queryP->queryProc);
|
|
// DisposHandle(queryP->queryProc);
|
|
}
|
|
|
|
/* dispose of queries */
|
|
if (queryP->queryList != NULL)
|
|
{
|
|
HLock((Handle)queryP->queryList);
|
|
|
|
/* dispose of all the handles in the array */
|
|
queries = *(queryP->queryList);
|
|
i = queryP->numQueries;
|
|
while ((i > 0) && (rc == noErr))
|
|
{
|
|
DisposHandle(*queries);
|
|
rc = MemError();
|
|
queries++;
|
|
i--;
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* no need to unlock handle before disposing */
|
|
DisposHandle((Handle)queryP->queryList);
|
|
rc = MemError();
|
|
}
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* dispose of resource list */
|
|
if (queryP->resList != NULL)
|
|
{
|
|
DisposHandle((Handle)queryP->resList);
|
|
rc = MemError();
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* finally, dispose of query record (no need to unlock it) */
|
|
DisposHandle((Handle)query);
|
|
rc = MemError();
|
|
}
|
|
}
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMDisposeQuery() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMStartQuery
|
|
*
|
|
* DESCRIPTION: DBStartQuery routine. If query is NULL, prompts for query document.
|
|
* Then, calls qdef with query, followed by DBInit, DBSend, and DBExec.
|
|
*
|
|
* Still need to do async stuff right.
|
|
*
|
|
* INPUTS: sessID: Pointer for session ID.
|
|
* query: Handle to query.
|
|
* statusProc: Pointer to user status function, if any.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: sessID: Pointer to filled in session ID.
|
|
*
|
|
* RETURNS: nilHandleErr (if query is NULL)
|
|
* userCanceledErr
|
|
* rcDBError (if currQuery not in range)
|
|
* Errors from qdef, DBInit, DBSend, and DBExec.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 04-14-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMStartQuery(long *sessID, QueryHandle query, statusPtr statusProc,
|
|
DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
QDEFPtr qdef;
|
|
QueryRecord *qp;
|
|
short rc;
|
|
Handle queryText, *queries;
|
|
short len;
|
|
char currState, textState;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
|
|
/********************************************/
|
|
/* Check for a valid query handle. */
|
|
/********************************************/
|
|
|
|
if (query == NULL)
|
|
{
|
|
/* query is null, return error */
|
|
rc = nilHandleErr;
|
|
|
|
/* call status function one last time */
|
|
rc = CallStatusProc(statusProc, kDBStartQueryComplete, rc);
|
|
|
|
if (asyncPB)
|
|
asyncPB->result = rc;
|
|
return(rc);
|
|
}
|
|
|
|
/********************************************/
|
|
/* We have a query, now call the qdef if */
|
|
/* there is one. */
|
|
/********************************************/
|
|
|
|
if ((**query).queryProc != NULL)
|
|
{
|
|
GrafPtr oldPort;
|
|
|
|
/* lock down queryProc and get a pointer to it */
|
|
MyHLock((**query).queryProc, &currState);
|
|
qdef = (QDEFPtr)(*((**query).queryProc));
|
|
|
|
/* call qdef with query, saving current GrafPort */
|
|
GetPort(&oldPort);
|
|
rc = (qdef)(sessID, query);
|
|
SetPort(oldPort);
|
|
|
|
/* restore state of handle */
|
|
HSetState((**query).queryProc, currState);
|
|
|
|
if ((rc == noErr) && (statusProc != NULL))
|
|
{
|
|
/* qdef completed successfully, call app's
|
|
status function */
|
|
rc = CallStatusProc(statusProc, kDBUpdateWind, noErr);
|
|
}
|
|
|
|
if (rc != noErr)
|
|
{
|
|
/* user or status function canceled query or error occurred */
|
|
|
|
/* call status function one last time */
|
|
rc = CallStatusProc(statusProc, kDBStartQueryComplete, rc);
|
|
|
|
if (asyncPB)
|
|
asyncPB->result = rc;
|
|
return(rc);
|
|
}
|
|
|
|
}
|
|
|
|
/* get pointer to QueryRecord */
|
|
MyHLock((Handle)query, &currState);
|
|
qp = *query;
|
|
|
|
/********************************************/
|
|
/* We've called the qdef, now we need to do */
|
|
/* a DBInit if a session is not up yet. */
|
|
/********************************************/
|
|
|
|
/* make sure a valid query is specified */
|
|
if ((qp->currQuery >= 1) && (qp->currQuery <= qp->numQueries))
|
|
{
|
|
/* query valid, check if session is up */
|
|
if (*sessID == 0)
|
|
{
|
|
rc = noErr;
|
|
|
|
/* call status function, if specified */
|
|
rc = CallStatusProc(statusProc, kDBAboutToInit, noErr);
|
|
|
|
if (rc == noErr)
|
|
{
|
|
if (asyncPB)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(NULL, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* keep track of session ID */
|
|
myVars->sessIDPtr = sessID;
|
|
|
|
/* keep track of status function */
|
|
myVars->statusProc = statusProc;
|
|
|
|
/* keep track of query for DBSend */
|
|
myVars->query = query;
|
|
myVars->queryState = currState;
|
|
|
|
/* get query now */
|
|
queries = *(qp->queryList);
|
|
myVars->queryText = queryText = queries[qp->currQuery - 1];
|
|
MyHLock(queryText, &(myVars->textState));
|
|
|
|
/* this is a high level call */
|
|
myVars->highlevel = true;
|
|
|
|
/* set current action */
|
|
myVars->currAction = kDBInit;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* make the call asynchronously and return */
|
|
return(DBInit(sessID, qp->ddevName, qp->host, qp->user, qp->password,
|
|
qp->connStr, myPB));
|
|
}
|
|
else
|
|
{
|
|
/* app made call synchronously */
|
|
|
|
/* no session up yet, call DBInit with specified parameters */
|
|
rc = DBInit(sessID, qp->ddevName, qp->host, qp->user, qp->password,
|
|
qp->connStr, NULL);
|
|
|
|
/* call status function, if specified */
|
|
rc = CallStatusProc(statusProc, kDBInitComplete, rc);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* session up already */
|
|
rc = noErr;
|
|
}
|
|
|
|
/********************************************/
|
|
/* DBInit is done, now do a DBSend to send */
|
|
/* the actual query. */
|
|
/********************************************/
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* session up, send query */
|
|
|
|
/* get query now */
|
|
queries = *(qp->queryList);
|
|
queryText = queries[qp->currQuery - 1];
|
|
MyHLock(queryText, &textState);
|
|
len = *((short*)(*queryText));
|
|
|
|
if (asyncPB != NULL)
|
|
{
|
|
/* we could get here if session was up and we didn't call DBInit */
|
|
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(NULL, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* keep track of session ID */
|
|
myVars->sessIDPtr = sessID;
|
|
|
|
/* keep track of status function */
|
|
myVars->statusProc = statusProc;
|
|
|
|
/* keep track of query for DBSend */
|
|
myVars->query = query;
|
|
myVars->queryState = currState;
|
|
|
|
/* keep track of query text for DBSend */
|
|
myVars->queryText = queryText;
|
|
myVars->textState = textState;
|
|
|
|
/* this is a high level call */
|
|
myVars->highlevel = true;
|
|
|
|
/* set current action */
|
|
myVars->currAction = kDBSend;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* make the call asynchronously and return */
|
|
return(DBSend(*sessID, *queryText + 2, len, myPB));
|
|
}
|
|
else
|
|
{
|
|
/* app made call synchronously */
|
|
|
|
/* call DBSend with specified query */
|
|
rc = DBSend(*sessID, *queryText + 2, len, asyncPB);
|
|
|
|
/* restore state */
|
|
HSetState(queryText, textState);
|
|
|
|
/* call status function, if specified */
|
|
rc = CallStatusProc(statusProc, kDBSendComplete, rc);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* currQuery is not in a valid range */
|
|
rc = rcDBError; /* do we need another return code here? */
|
|
}
|
|
|
|
/* clean up */
|
|
HSetState((Handle)query, currState);
|
|
|
|
/********************************************/
|
|
/* DBSend is done, now do a DBExec. */
|
|
/********************************************/
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* everything is OK, execute query */
|
|
/* if we get here, we are definitely synchronous */
|
|
rc = DBExec(*sessID, asyncPB);
|
|
|
|
/* call status function, if specified */
|
|
rc = CallStatusProc(statusProc, kDBExecComplete, rc);
|
|
}
|
|
|
|
/* call status function one last time */
|
|
return(CallStatusProc(statusProc, kDBStartQueryComplete, rc));
|
|
|
|
} /* SMStartQuery() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMGetQueryResults
|
|
*
|
|
* DESCRIPTION: DBGetQueryResults routine.
|
|
*
|
|
* INPUTS: sessID: Session ID.
|
|
* results: Pointer to results record.
|
|
* timeout: Timeout value for DBGetItem.
|
|
* statusProc: Pointer to user status function, if any.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: results: Pointer to filled in results record.
|
|
*
|
|
* RETURNS: userCanceledErr
|
|
* rcDBValue
|
|
* Errors from DBState, SetupResults, DBGetItem, and
|
|
* GrowResultsRecord.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 04-19-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMGetQueryResults(long sessID, ResultsRecord *results, long timeout,
|
|
statusPtr statusProc, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
short rc;
|
|
DBType dataType, *typeArray;
|
|
long currOffset, oldCurrOffset; /* current offset into data */
|
|
long endLastRowData, endLastRowInfo; /* end of last row */
|
|
short currCol; /* current column */
|
|
short len, places, flags;
|
|
short retval;
|
|
long oldlen;
|
|
Handle typeH, dataH, infoH;
|
|
Handle oldTypeH, oldDataH, oldInfoH;
|
|
Boolean done, firsttime;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
ResultsRecord *oldResults;
|
|
snarfSessElemHndl snarf;
|
|
DBColInfoRecord *currInfo;
|
|
|
|
if (asyncPB != NULL)
|
|
{
|
|
/* we have to set up our own parameter block */
|
|
myPB = MakePB(NULL, asyncPB);
|
|
myVars = (asyncVarsPtr)myPB->reserved;
|
|
|
|
/* keep track of session ID */
|
|
myVars->sessID = sessID;
|
|
|
|
/* keep track of status function */
|
|
myVars->statusProc = statusProc;
|
|
|
|
/* keep track of ResultsRecord */
|
|
myVars->results = results;
|
|
|
|
/* this is a high level call */
|
|
myVars->highlevel = true;
|
|
|
|
/* set current action */
|
|
myVars->currAction = kDBState;
|
|
|
|
/* put parameter block into global list */
|
|
InsertPB(myPB);
|
|
|
|
/* make the call asynchronously and return */
|
|
return(DBState(sessID, myPB));
|
|
}
|
|
|
|
/* app made call synchronously */
|
|
/* check the state of the current session */
|
|
rc = DBState(sessID, NULL);
|
|
|
|
/* we only care if there is data to return */
|
|
if (rc != rcDBValue)
|
|
{
|
|
/* call status function one last time */
|
|
return(CallStatusProc(statusProc, kDBGetQueryResultsComplete, rc));
|
|
}
|
|
|
|
#ifdef DODPRINTF
|
|
dprintf("DBState returned noErr");
|
|
#endif
|
|
|
|
/* use common code to initialize results */
|
|
rc = SetupResults(sessID, &snarf, results, &oldResults,
|
|
&currOffset, &currCol);
|
|
|
|
if (rc != noErr)
|
|
{
|
|
/* an error occurred initializing results */
|
|
|
|
/* call status function one last time */
|
|
return(CallStatusProc(statusProc, kDBGetQueryResultsComplete, rc));
|
|
}
|
|
|
|
/* current offset in old and user results is the same */
|
|
oldCurrOffset = currOffset;
|
|
|
|
/* save handles in local variables for convenience */
|
|
typeH = results->colTypes;
|
|
dataH = results->colData;
|
|
infoH = results->colInfo;
|
|
|
|
oldTypeH = oldResults->colTypes;
|
|
oldDataH = oldResults->colData;
|
|
oldInfoH = oldResults->colInfo;
|
|
|
|
/* didn't go through a row yet */
|
|
endLastRowData = 0;
|
|
endLastRowInfo = 0;
|
|
|
|
done = false;
|
|
firsttime = true;
|
|
|
|
do
|
|
{
|
|
/* get information on current column without getting data */
|
|
dataType = typeAnyType;
|
|
|
|
/*
|
|
dprintf("DBGetItem info: colTypes len = %d, colData len = %d",
|
|
GetHandleSize(oldTypeH), GetHandleSize(oldDataH));
|
|
dprintf("DBGetItem info: colLens len = %d",
|
|
GetHandleSize(oldLenH));
|
|
*/
|
|
|
|
rc = DBGetItem(sessID, timeout, &dataType, &len, &places, &flags, NULL, NULL);
|
|
|
|
switch (rc)
|
|
{
|
|
case rcDBNull:
|
|
case rcDBValue:
|
|
/* information retrieved successfully */
|
|
#ifdef DODPRINTF
|
|
dprintf("DBGetItem for info - len = %d, dataType = %d, flags = %d", len,
|
|
dataType, flags);
|
|
#endif
|
|
/* grow old results first */
|
|
if ((retval = GrowResultsRecord(oldResults, len,
|
|
(endLastRowData == 0))) == noErr)
|
|
{
|
|
/* old results grown successfully, try growing user results */
|
|
if ((retval = GrowResultsRecord(results, len,
|
|
(endLastRowData == 0))) != noErr)
|
|
{
|
|
/* couldn't grow user results, resize old results */
|
|
SetHandleSize(oldDataH, (long)(oldCurrOffset));
|
|
SetHandleSize(oldInfoH, GetHandleSize(oldInfoH) -
|
|
sizeof(DBColInfoRecord));
|
|
if (endLastRowData == 0)
|
|
{
|
|
SetHandleSize(oldTypeH, GetHandleSize(oldTypeH) -
|
|
sizeof(DBType));
|
|
}
|
|
done = true;
|
|
}
|
|
}
|
|
else
|
|
/* error growing old results */
|
|
done = true;
|
|
|
|
if (!done)
|
|
{
|
|
/* everything grown OK, update stuff */
|
|
|
|
/* save info on current column */
|
|
oldlen = GetHandleSize(oldInfoH) - sizeof(DBColInfoRecord);
|
|
currInfo = (DBColInfoRecord*)(*oldInfoH + oldlen);
|
|
currInfo->len = len;
|
|
currInfo->places = places;
|
|
currInfo->flags = flags;
|
|
|
|
oldlen = GetHandleSize(infoH) - sizeof(DBColInfoRecord);
|
|
currInfo = (DBColInfoRecord*)(*infoH + oldlen);
|
|
currInfo->len = len;
|
|
currInfo->places = places;
|
|
currInfo->flags = flags;
|
|
|
|
/* save data type, if necessary */
|
|
if (endLastRowData == 0)
|
|
{
|
|
typeArray = (DBType*)(*oldTypeH);
|
|
typeArray[currCol] = dataType;
|
|
|
|
typeArray = (DBType*)(*typeH);
|
|
typeArray[currCol] = dataType;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case noErr:
|
|
/* no more data */
|
|
#ifdef DODPRINTF
|
|
dprintf("DBGetItem for info - got noErr");
|
|
#endif
|
|
done = true;
|
|
if (firsttime)
|
|
{
|
|
/* first time through, so query had no results */
|
|
retval = noErr;
|
|
}
|
|
else
|
|
{
|
|
/* not first time, so we have data to return */
|
|
retval = rcDBValue;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
/* some other error */
|
|
/* should only be rcDBError from DBGetItem */
|
|
#ifdef DODPRINTF
|
|
dprintf("DBGetItem for info - got rc = %d", rc);
|
|
#endif
|
|
done = true;
|
|
retval = rc;
|
|
break;
|
|
}
|
|
|
|
if (!done)
|
|
{
|
|
firsttime = false; /* there's at least one column of data */
|
|
|
|
/* got information on current column successfully, get actual column */
|
|
HLock(dataH);
|
|
/*
|
|
dprintf("DBGetItem data: colTypes len = %d, colData len = %d",
|
|
GetHandleSize(oldTypeH), GetHandleSize(oldDataH));
|
|
dprintf("DBGetItem data: colLens len = %d",
|
|
GetHandleSize(oldLenH));
|
|
*/
|
|
|
|
rc = DBGetItem(sessID, timeout, &dataType, &len, &places, &flags,
|
|
*dataH + currOffset, NULL);
|
|
|
|
/* call status function, if specified */
|
|
if (statusProc != NULL)
|
|
{
|
|
if (!statusProc(kDBGetItemComplete, rc, len, places, flags, dataType,
|
|
*dataH + currOffset))
|
|
{
|
|
/* status function cancelled */
|
|
done = true;
|
|
retval = userCanceledErr;
|
|
}
|
|
}
|
|
|
|
HUnlock(dataH);
|
|
|
|
switch (rc)
|
|
{
|
|
case rcDBNull:
|
|
case rcDBValue:
|
|
/* got data */
|
|
#ifdef DODPRINTF
|
|
dprintf("DBGetItem - got data of dataType %d len %d, at %X",
|
|
dataType, len, (long)*dataH + currOffset);
|
|
#endif
|
|
/* copy data to old results */
|
|
BlockMove(*dataH + currOffset, *oldDataH + oldCurrOffset,
|
|
(long)len);
|
|
|
|
/* update current position in data handle */
|
|
currOffset += len;
|
|
oldCurrOffset += len;
|
|
|
|
/* check if end of row */
|
|
if (flags & kDBLastColFlag)
|
|
{
|
|
/* yes, update currCol and endLastRows */
|
|
#ifdef DODPRINTF
|
|
dprintf("DBGetItem - at end of row, col = %d", currCol);
|
|
#endif
|
|
|
|
if (endLastRowData == 0)
|
|
{
|
|
/* just went through first row, update results */
|
|
results->numCols = currCol + 1;
|
|
}
|
|
|
|
currCol = 0;
|
|
endLastRowData = currOffset;
|
|
endLastRowInfo = GetHandleSize(infoH);
|
|
|
|
/* add one to the number of rows processed */
|
|
results->numRows++;
|
|
|
|
/* we got a complete row, shrink down old results */
|
|
SetHandleSize(oldDataH, 0);
|
|
SetHandleSize(oldInfoH, 0);
|
|
oldCurrOffset = 0;
|
|
|
|
/* keep the old types handle around */
|
|
}
|
|
else
|
|
{
|
|
/* still in same row */
|
|
currCol++;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
/* some other error occurred from DBGetItem */
|
|
#ifdef DODPRINTF
|
|
dprintf("DBGetItem - other error %d", rc);
|
|
#endif
|
|
done = true;
|
|
retval = rc;
|
|
break;
|
|
}
|
|
}
|
|
|
|
} while (!done);
|
|
|
|
if (retval != rcDBValue)
|
|
{
|
|
/* some error occurred, either out of space or ddev error */
|
|
/* or status function cancelled */
|
|
/* need to back up to last full row */
|
|
|
|
if (endLastRowData == 0)
|
|
{
|
|
/* didn't get one full row, need to dispose of everything */
|
|
DisposeResultsRecord(results);
|
|
|
|
results->numRows = 0;
|
|
results->numCols = 0;
|
|
}
|
|
else
|
|
{
|
|
/* got at least one row */
|
|
/* adjust data and info handle */
|
|
SetHandleSize(dataH, endLastRowData);
|
|
SetHandleSize(infoH, endLastRowInfo);
|
|
}
|
|
|
|
/* update currCol in snarf elem */
|
|
(**snarf).currCol = currCol;
|
|
|
|
/* roll back types array to current column */
|
|
SetHandleSize(oldTypeH, (long)((currCol+1) * sizeof(DBType)));
|
|
}
|
|
else
|
|
{
|
|
/* we got all the data successfully, so we don't need the old results */
|
|
DisposeResultsRecord(oldResults);
|
|
DisposPtr((Ptr)oldResults);
|
|
(**snarf).oldResults = NULL;
|
|
(**snarf).currCol = 0;
|
|
}
|
|
|
|
#ifdef DODPRINTF
|
|
dprintf("SMGetQueryResults exit - rc = %d, results = %X", rc, results);
|
|
#endif
|
|
|
|
/* call status function one last time */
|
|
retval = CallStatusProc(statusProc, kDBGetQueryResultsComplete, retval);
|
|
|
|
return(retval);
|
|
|
|
} /* SMGetQueryResults() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMKill
|
|
*
|
|
* DESCRIPTION: DBKill routine. Calls DBKill with specified parameters.
|
|
*
|
|
* INPUTS: asyncPB: Pointer to asynchronous parameter block.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: rcDBBadAsyncPB
|
|
* rcDBError
|
|
* Errors from CallDDEV.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 07-28-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMKill(DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
register short rc;
|
|
DBAsyncParmBlkPtr realPB, otherPB;
|
|
asyncVarsPtr myVars;
|
|
ddevElemHndl ddevH;
|
|
Boolean highlevel;
|
|
Boolean closeDDEV;
|
|
DDEVParams params;
|
|
|
|
/* assume bad asyncPB */
|
|
rc = rcDBBadAsyncPB;
|
|
|
|
if (asyncPB)
|
|
{
|
|
/* try to find asyncPB embedded in our list of PBs */
|
|
realPB = FindAppPB(asyncPB);
|
|
if (realPB)
|
|
{
|
|
/* got the actual parameter block */
|
|
myVars = (asyncVarsPtr)realPB->reserved;
|
|
|
|
if (highlevel = myVars->highlevel)
|
|
{
|
|
/* we've found the pb for StartQuery or GetQueryResults */
|
|
/* now, we need the pb for the actual call to the ddev */
|
|
otherPB = realPB;
|
|
realPB = FindAppPB(otherPB);
|
|
|
|
if (realPB)
|
|
{
|
|
/* get the right variables */
|
|
myVars = (asyncVarsPtr)realPB->reserved;
|
|
}
|
|
}
|
|
|
|
if (realPB)
|
|
{
|
|
/* make sure call is still executing before killing it */
|
|
if (myVars->executing)
|
|
{
|
|
|
|
/* fill in parameter block for DBKill */
|
|
ClearParams(params);
|
|
params.message = kDBKill;
|
|
params.asyncPB = realPB;
|
|
|
|
/* session ID not needed, so just pass 0 */
|
|
/* call ddev synchronously - DBKill */
|
|
rc = CallDDEV(((asyncVarsPtr)realPB->reserved)->ddevH, ¶ms);
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* copy over the result, just in case */
|
|
asyncPB->result = realPB->result;
|
|
|
|
/* check if this is a DBInit, if so, we have to
|
|
close ddev if no sessions are up */
|
|
if (closeDDEV = ((myVars->currAction == kDBInit) &&
|
|
(myVars->firstsess)))
|
|
{
|
|
/* save ddev handle to close after removing pbs */
|
|
ddevH = myVars->ddevH;
|
|
}
|
|
|
|
if (highlevel)
|
|
{
|
|
/* we just killed the actual PB, need to
|
|
remove the high level PB */
|
|
RemovePB(otherPB);
|
|
}
|
|
|
|
/* remove pb from list */
|
|
RemovePB(realPB);
|
|
|
|
/* close ddev, if necessary */
|
|
if (closeDDEV)
|
|
(void)SMClose(ddevH);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* call has finished executing, we just haven't processed it
|
|
yet in DBIdle, so return an error ?? */
|
|
rc = rcDBError;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMKill() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMResultsToText
|
|
*
|
|
* DESCRIPTION: DBResultsToText routine. Converts specified ResultsRecord to text.
|
|
*
|
|
* INPUTS: results: Pointer to ResultsRecord returned by DBGetQueryResults.
|
|
*
|
|
* OUTPUTS: theText: Handle allocated with converted text.
|
|
*
|
|
* RETURNS: Errors from NewHandle and the result handler.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-03-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMResultsToText(ResultsRecord *results, Handle *theText)
|
|
{
|
|
Handle textH;
|
|
HandlerPtr theHandler, colHandler, rowHandler, unknHandler;
|
|
DBType *typeArray;
|
|
Ptr buffer;
|
|
DBColInfoRecord *infoArray;
|
|
short currRow, currCol;
|
|
short rc = noErr;
|
|
char typeState, dataState, infoState;
|
|
|
|
/* assume failure */
|
|
*theText = NULL;
|
|
|
|
/* check if this results records contains any results and is valid */
|
|
if ((results->numRows == 0) || (results->numCols == 0) ||
|
|
(results->colTypes == NULL) || (results->colData == NULL) ||
|
|
(results->colInfo == NULL))
|
|
{
|
|
return(noErr);
|
|
}
|
|
|
|
/* start with empty handle */
|
|
textH = NewHandle(NULL);
|
|
if (textH == NULL)
|
|
rc = MemError();
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* lock everything down */
|
|
MyHLock(results->colTypes, &typeState);
|
|
MyHLock(results->colData, &dataState);
|
|
MyHLock(results->colInfo, &infoState);
|
|
|
|
/* get pointers to all the arrays */
|
|
typeArray = (DBType*)(*(results->colTypes));
|
|
buffer = (*(results->colData));
|
|
infoArray = (DBColInfoRecord*)(*(results->colInfo));
|
|
|
|
/* prefetch the unknown, column break, and row break handlers */
|
|
unknHandler = GetCorrectResultHandler(typeUnknown);
|
|
colHandler = GetCorrectResultHandler(typeColBreak);
|
|
rowHandler = GetCorrectResultHandler(typeRowBreak);
|
|
|
|
/* start at the beginning */
|
|
currRow = 0;
|
|
|
|
/* do all the rows */
|
|
while ((currRow < results->numRows) && (rc == noErr))
|
|
{
|
|
/* do all the columns in this row */
|
|
currCol = 0;
|
|
while ((currCol < results->numCols) && (rc == noErr))
|
|
{
|
|
/* try to get the application handler for the type of data in this column */
|
|
theHandler = GetCorrectResultHandler(typeArray[currCol]);
|
|
|
|
if (theHandler == NULL)
|
|
{
|
|
/* none installed for this type, use the unknown handler */
|
|
theHandler = unknHandler;
|
|
}
|
|
|
|
/* call the handler to do the conversion */
|
|
rc = (*theHandler)(typeArray[currCol], infoArray->len, infoArray->places,
|
|
infoArray->flags, buffer, textH);
|
|
|
|
/* adjust pointer into buffer */
|
|
buffer += infoArray->len;
|
|
|
|
/* adjust pointer into DBColInfoRecord array */
|
|
infoArray++;
|
|
|
|
/* go to next column */
|
|
currCol++;
|
|
|
|
/* see if we're at the end of a row */
|
|
if ((currCol < results->numCols) && (rc == noErr))
|
|
{
|
|
/* no, do column break */
|
|
rc = (*colHandler)(typeColBreak, 0, NULL, NULL, NULL, textH);
|
|
}
|
|
|
|
} /* while ((currCol < results->numCols) && (rc == noErr)) */
|
|
|
|
/* go to next row */
|
|
currRow++;
|
|
|
|
/* do row break */
|
|
if (rc == noErr)
|
|
{
|
|
rc = (*rowHandler)(typeRowBreak, 0, NULL, NULL, NULL, textH);
|
|
}
|
|
|
|
} /* while ((currRow < results->numRows) && (rc == noErr)) */
|
|
|
|
/* clean up */
|
|
*theText = textH;
|
|
HSetState(results->colTypes, typeState);
|
|
HSetState(results->colData, dataState);
|
|
HSetState(results->colInfo, infoState);
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMResultsToText() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: GetCorrectResultHandler
|
|
*
|
|
* DESCRIPTION: Get the specified result handler. Tries to get application handler first,
|
|
* then system handler if there is no application handler.
|
|
*
|
|
* INPUTS: dataType: Data type for handler.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: theHandler: Handler ProcPtr.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 04-02-90 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1990
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
HandlerPtr
|
|
GetCorrectResultHandler(DBType dataType)
|
|
{
|
|
ProcPtr p;
|
|
|
|
/* check for application handlers first */
|
|
DBGetResultHandler(dataType, &p, false);
|
|
if (p == NULL)
|
|
{
|
|
/* no application handler, get system handler */
|
|
DBGetResultHandler(dataType, &p, true);
|
|
}
|
|
|
|
return((HandlerPtr)p);
|
|
|
|
} /* GetCorrectResultHandler() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMInstallResultHandler
|
|
*
|
|
* DESCRIPTION: DBInstallResultHandler routine. Installs a results
|
|
* handler for the specified data type.
|
|
*
|
|
* INPUTS: dataType: Data type for this handler.
|
|
* theHandler: Pointer to handler.
|
|
* isSysHandler: If TRUE, install this as a system handler,
|
|
* otherwise handler is for current application.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Errors from NewHandleSys and InsertHandler.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-03-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMInstallResultHandler(DBType dataType, ProcPtr theHandler, Boolean isSysHandler)
|
|
{
|
|
snarfGlobPtr glob;
|
|
HandlerRecord *hArray;
|
|
short currIndex;
|
|
HandlerRecord newRec, *arrayHandler, **newHandler;
|
|
short rc;
|
|
char currState;
|
|
Boolean foundit;
|
|
|
|
/* assume success */
|
|
rc = noErr;
|
|
|
|
/* set up new record to put in array */
|
|
newRec.type = dataType;
|
|
newRec.theHandler = (HandlerPtr)theHandler;
|
|
newRec.next = (HandlerRecord**)NULL;
|
|
newRec.hZone = GetZone();
|
|
newRec.isSysHandler = isSysHandler;
|
|
|
|
/* see if there already is any handler for this type */
|
|
if ((currIndex = FindHandler(dataType)) != -1)
|
|
{
|
|
/* yes, get the handler in the array */
|
|
|
|
/* get a pointer to the array */
|
|
glob = GetGlobals();
|
|
MyHLock((Handle)glob->handlers, &currState);
|
|
hArray = *(glob->handlers);
|
|
|
|
/* arrayHandler is the handler in the array, that is,
|
|
the first handler for this type */
|
|
arrayHandler = &hArray[currIndex];
|
|
|
|
if (isSysHandler)
|
|
{
|
|
/* installing a system handler */
|
|
/* if there is a system handler, it is always first in the list */
|
|
if (!(arrayHandler->isSysHandler))
|
|
{
|
|
/* first handler is an app handler, need to move it down
|
|
the list, so duplicate it into a new handle */
|
|
newHandler = (HandlerRecordHandle)NewHandleSysClear(
|
|
sizeof(HandlerRecord));
|
|
if ((rc = MemError()) == noErr)
|
|
{
|
|
BlockMove((Ptr)arrayHandler, (Ptr)*newHandler,
|
|
sizeof(HandlerRecord));
|
|
|
|
/* set the next field of system handler record */
|
|
newRec.next = newHandler;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* replacing current system handler, set next field */
|
|
newRec.next = arrayHandler->next;
|
|
}
|
|
|
|
/* move in the new system handler */
|
|
if (rc == noErr)
|
|
{
|
|
BlockMove((Ptr)&newRec, (Ptr)arrayHandler, sizeof(HandlerRecord));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* installing an application handler */
|
|
|
|
/* try and find a current handler for this app */
|
|
|
|
/* check the array handler first */
|
|
if (!(arrayHandler->isSysHandler) &&
|
|
(arrayHandler->hZone != newRec.hZone))
|
|
{
|
|
/* handler in array is the current app handler */
|
|
/* just set the proc ptr */
|
|
arrayHandler->theHandler = (HandlerPtr)theHandler;
|
|
}
|
|
else
|
|
{
|
|
/* have to search list of handlers */
|
|
newHandler = arrayHandler->next;
|
|
foundit = false;
|
|
|
|
while (newHandler && !foundit)
|
|
{
|
|
if ((**newHandler).hZone == newRec.hZone)
|
|
{
|
|
/* found current app handler */
|
|
foundit = true;
|
|
}
|
|
else
|
|
newHandler = (**newHandler).next;
|
|
}
|
|
|
|
if (foundit)
|
|
{
|
|
/* an app handler already exists, just set the proc ptr */
|
|
(**newHandler).theHandler = (HandlerPtr)theHandler;
|
|
}
|
|
else
|
|
{
|
|
/* new handler for current app, insert one after array handler */
|
|
newRec.next = arrayHandler->next;
|
|
newHandler = (HandlerRecordHandle)NewHandleSysClear(
|
|
sizeof(HandlerRecord));
|
|
if ((rc = MemError()) == noErr)
|
|
{
|
|
BlockMove((Ptr)&newRec, (Ptr)*newHandler,
|
|
sizeof(HandlerRecord));
|
|
arrayHandler->next = newHandler;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* restore state of handler array */
|
|
HSetState((Handle)glob->handlers, currState);
|
|
}
|
|
else
|
|
{
|
|
/* no handler for this type, install new handler into the array */
|
|
rc = InsertHandler(&newRec);
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMInstallResultHandler() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMRemoveResultHandler
|
|
*
|
|
* DESCRIPTION: DBRemoveResultHandler routine. Remove a result
|
|
* handler for the specified data type.
|
|
*
|
|
* INPUTS: dataType: Data type for handler to remove.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: rcDBNoHandler
|
|
* Errors from DisposHandle, and RemoveHandler.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-03-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMRemoveResultHandler(DBType dataType)
|
|
{
|
|
short index;
|
|
snarfGlobPtr glob;
|
|
HandlerRecord *hArray, **newHandler, **lastHandler;
|
|
THz hZone;
|
|
short rc;
|
|
Boolean foundit;
|
|
char currState;
|
|
|
|
/* assume failure */
|
|
rc = rcDBNoHandler;
|
|
|
|
/* find the array entry for this data type */
|
|
index = FindHandler(dataType);
|
|
|
|
if (index == -1)
|
|
{
|
|
/* no handler (system or app) installed */
|
|
return(rcDBNoHandler);
|
|
}
|
|
|
|
/* get specific handler element */
|
|
glob = GetGlobals();
|
|
MyHLock((Handle)(glob->handlers), &currState);
|
|
hArray = *(glob->handlers);
|
|
|
|
/* get current application's zone */
|
|
hZone = GetZone();
|
|
|
|
/* check the array handler first */
|
|
if (!(hArray[index].isSysHandler) &&
|
|
(hArray[index].hZone == hZone))
|
|
{
|
|
/* handler in array is the current app handler */
|
|
|
|
/* see if there are any other handlers left */
|
|
if (newHandler = hArray[index].next)
|
|
{
|
|
/* yes, just move the next one into the array */
|
|
BlockMove((Ptr)*newHandler, (Ptr)&(hArray[index]),
|
|
sizeof(HandlerRecord));
|
|
|
|
DisposHandle((Handle)newHandler);
|
|
rc = MemError();
|
|
}
|
|
else
|
|
{
|
|
/* we're removing the only handler for this data type */
|
|
HSetState((Handle)(glob->handlers), currState);
|
|
rc = RemoveHandler(index);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* handler in array isn't the right one, check list */
|
|
newHandler = hArray[index].next;
|
|
lastHandler = NULL;
|
|
foundit = false;
|
|
|
|
while (newHandler && !foundit)
|
|
{
|
|
if ((**newHandler).hZone == hZone)
|
|
{
|
|
/* found current app handler */
|
|
foundit = true;
|
|
}
|
|
else
|
|
{
|
|
lastHandler = newHandler;
|
|
newHandler = (**newHandler).next;
|
|
}
|
|
}
|
|
|
|
if (foundit)
|
|
{
|
|
/* found the app handler in the list off the array */
|
|
|
|
/* fix up list */
|
|
if (lastHandler)
|
|
{
|
|
(**lastHandler).next = (**newHandler).next;
|
|
}
|
|
else
|
|
{
|
|
/* removing first handler in list */
|
|
hArray[index].next = (**newHandler).next;
|
|
}
|
|
|
|
/* get rid of handler record */
|
|
DisposHandle((Handle)newHandler);
|
|
rc = MemError();
|
|
}
|
|
}
|
|
|
|
HSetState((Handle)(glob->handlers), currState);
|
|
|
|
return(rc);
|
|
|
|
} /* SMRemoveResultHandler() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMGetResultHandler
|
|
*
|
|
* DESCRIPTION: DBGetResultHandler routine. Returns a pointer to
|
|
* the result handler for the specified data type. getSysHandler
|
|
* specifies which handler to return.
|
|
*
|
|
* INPUTS: dataType: Data type for handler.
|
|
* getSysHandler: If TRUE, return system handler, if any.
|
|
* Otherwise, return app handler, if any.
|
|
*
|
|
* OUTPUTS: theHandler: Pointer to handler.
|
|
*
|
|
* RETURNS: rcDBNoHandler
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-03-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal OSErr
|
|
SMGetResultHandler(DBType dataType, ProcPtr *theHandler, Boolean getSysHandler)
|
|
{
|
|
short index;
|
|
snarfGlobPtr glob;
|
|
HandlerRecord *hArray, **newHandler;
|
|
short rc;
|
|
THz hZone;
|
|
Boolean foundit;
|
|
char currState;
|
|
|
|
/* assume failure */
|
|
*theHandler = NULL;
|
|
rc = rcDBNoHandler;
|
|
|
|
/* find the array entry for this data type */
|
|
index = FindHandler(dataType);
|
|
|
|
if (index == -1)
|
|
{
|
|
/* no handler (system or app) installed */
|
|
return(rcDBNoHandler);
|
|
}
|
|
|
|
/* get specific handler element */
|
|
glob = GetGlobals();
|
|
MyHLock((Handle)(glob->handlers), &currState);
|
|
hArray = *(glob->handlers);
|
|
|
|
if (getSysHandler)
|
|
{
|
|
/* wants system handler, always first one if it exists */
|
|
if (hArray[index].isSysHandler)
|
|
{
|
|
/* this is it */
|
|
*theHandler = (ProcPtr)(hArray[index].theHandler);
|
|
rc = noErr;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* wants current application's handler */
|
|
hZone = GetZone();
|
|
|
|
/* check the array handler first */
|
|
if (!(hArray[index].isSysHandler) &&
|
|
(hArray[index].hZone == hZone))
|
|
{
|
|
/* handler in array is the current app handler */
|
|
*theHandler = (ProcPtr)(hArray[index].theHandler);
|
|
rc = noErr;
|
|
}
|
|
else
|
|
{
|
|
/* have to search list of handlers */
|
|
newHandler = hArray[index].next;
|
|
foundit = false;
|
|
|
|
while (newHandler && !foundit)
|
|
{
|
|
if ((**newHandler).hZone == hZone)
|
|
{
|
|
/* found current app handler */
|
|
foundit = true;
|
|
}
|
|
else
|
|
newHandler = (**newHandler).next;
|
|
}
|
|
|
|
if (foundit)
|
|
{
|
|
/* found the app handler in the list off the array */
|
|
*theHandler = (ProcPtr)((**newHandler).theHandler);
|
|
rc = noErr;
|
|
}
|
|
}
|
|
}
|
|
|
|
HSetState((Handle)(glob->handlers), currState);
|
|
|
|
return(rc);
|
|
|
|
} /* SMGetResultHandler() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: FindHandler
|
|
*
|
|
* DESCRIPTION: Do a binary search of the array of HandlerRecords for the
|
|
* handler of the specified type. Returns array index of handler,
|
|
* or -1 if not found.
|
|
*
|
|
* INPUTS: dataType: Data type for handler to find.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Index into array of handler, or -1 if not found.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-06-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
short
|
|
FindHandler(DBType dataType)
|
|
{
|
|
snarfGlobPtr glob;
|
|
HandlerRecord *hArray;
|
|
short curr, first, last, rc;
|
|
char currState;
|
|
|
|
glob = GetGlobals();
|
|
|
|
/* check for empty array */
|
|
if ((last = glob->numHandlers) == 0)
|
|
{
|
|
rc = -1;
|
|
}
|
|
else
|
|
{
|
|
/* lock down array */
|
|
MyHLock((Handle)glob->handlers, &currState);
|
|
hArray = *(glob->handlers);
|
|
|
|
/* start with whole array */
|
|
first = 0;
|
|
|
|
do
|
|
{
|
|
curr = (first + last) >> 1;
|
|
if (dataType < hArray[curr].type)
|
|
/* in first half */
|
|
last = curr - 1;
|
|
else
|
|
/* in second half */
|
|
first = curr + 1;
|
|
} while ((dataType != hArray[curr].type) && (first <= last));
|
|
|
|
if (dataType == hArray[curr].type)
|
|
rc = curr;
|
|
else
|
|
rc = -1;
|
|
|
|
HSetState((Handle)glob->handlers, currState);
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* FindHandler() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: InsertHandler
|
|
*
|
|
* DESCRIPTION: Insert specified HandlerRecord in array of handlers.
|
|
*
|
|
* INPUTS: newRec: HandlerRecord to insert.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Errors from SetHandleSize.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-06-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
InsertHandler(HandlerRecord *newRec)
|
|
{
|
|
snarfGlobPtr glob;
|
|
HandlerRecord *hArray;
|
|
short rc;
|
|
short numHandlers, i;
|
|
char currState;
|
|
|
|
/* find where to put new record */
|
|
glob = GetGlobals();
|
|
MyHLock((Handle)glob->handlers, &currState);
|
|
hArray = *(glob->handlers);
|
|
|
|
i = 0;
|
|
numHandlers = glob->numHandlers;
|
|
while ((i < numHandlers) && (hArray[i].type < newRec->type))
|
|
i++;
|
|
|
|
/* grow array */
|
|
HSetState((Handle)glob->handlers, currState);
|
|
|
|
SetHandleSize((Handle)glob->handlers, GetHandleSize((Handle)glob->handlers)
|
|
+ sizeof(HandlerRecord));
|
|
|
|
if ((rc = MemError()) == noErr)
|
|
{
|
|
hArray = *(glob->handlers);
|
|
|
|
/* see if we have to shift array */
|
|
if (i != numHandlers) /* are we inserting at the end? */
|
|
{
|
|
/* no, have to move some records down */
|
|
BlockMove((Ptr)&(hArray[i]), (Ptr)&(hArray[i+1]), (numHandlers - i) *
|
|
sizeof(HandlerRecord));
|
|
}
|
|
|
|
/* move in new record */
|
|
BlockMove((Ptr)newRec, (Ptr)&(hArray[i]), sizeof(HandlerRecord));
|
|
|
|
glob->numHandlers++;
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* InsertHandler() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: RemoveHandler
|
|
*
|
|
* DESCRIPTION: Remove handler at specified index in array.
|
|
*
|
|
* INPUTS: index: Index of record to remove.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Errors from SetHandleSize.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-09-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
RemoveHandler(short index)
|
|
{
|
|
snarfGlobPtr glob;
|
|
HandlerRecord *hArray;
|
|
|
|
/* find record to delete */
|
|
glob = GetGlobals();
|
|
|
|
if (index != (glob->numHandlers - 1))
|
|
{
|
|
/* we're not removing the last record in the array,
|
|
need to move other elements up */
|
|
hArray = *(glob->handlers);
|
|
BlockMove((Ptr)&(hArray[index+1]), (Ptr)&(hArray[index]),
|
|
sizeof(HandlerRecord) * (glob->numHandlers - index - 1));
|
|
}
|
|
|
|
/* decrement number of handlers */
|
|
glob->numHandlers--;
|
|
|
|
/* resize handle */
|
|
SetHandleSize((Handle)glob->handlers, GetHandleSize((Handle)glob->handlers)
|
|
- sizeof(HandlerRecord));
|
|
|
|
return(MemError());
|
|
|
|
} /* RemoveHandler() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SMGeneric
|
|
*
|
|
* DESCRIPTION: Generic routine to invoke ddev with specified parameter block.
|
|
* Converts snarfID to the ddev's session ID, and fills in
|
|
* the sessID and asyncPB field of the DDEVParams. We do this
|
|
* all here to save code. Note: if caller gets back
|
|
* rcDBBadSessID then ddev was not called.
|
|
*
|
|
* INPUTS: snarfID: Snarf ID of session.
|
|
* asyncPB: Pointer to asynchronous parameter block.
|
|
* params: Pointer to filled in parameter block for ddev.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: rcDBBadSessID
|
|
* Errors from CallDDEV.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-27-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
SMGeneric(long snarfID, DBAsyncParmBlkPtr asyncPB, DDEVParams *params)
|
|
{
|
|
snarfGlobPtr glob;
|
|
ddevElemHndl ddevH;
|
|
snarfSessElemHndl snarf;
|
|
sessElemHndl sess;
|
|
short rc;
|
|
|
|
glob = GetGlobals();
|
|
|
|
/* find snarf element with specified id */
|
|
if ((snarf = FindSnarfID(snarfID, glob->snarfRoot)) == NULL)
|
|
{
|
|
/* bad session ID */
|
|
rc = rcDBBadSessID;
|
|
}
|
|
else
|
|
{
|
|
/* got snarf element, get session and ddev info */
|
|
sess = (**snarf).sess;
|
|
ddevH = (**sess).parent;
|
|
|
|
/* fill in real session ID */
|
|
params->sessID = (**sess).sessID;
|
|
|
|
/* fill in asyncPB pointer */
|
|
params->asyncPB = asyncPB;
|
|
|
|
/* call ddev with specified parameter block */
|
|
rc = CallDDEV(ddevH, params);
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SMGeneric() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: InitDoneProc
|
|
*
|
|
* DESCRIPTION: Routine called after DBInit for an asynchronous DBStartQuery
|
|
* completes. If DBInit was successful, calls DBSend.
|
|
*
|
|
* INPUTS: myPB: Async parameter block.
|
|
* myVars: Async variables.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: userCanceledErr
|
|
* Errors from just finished DBInit and DBSend.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 06-21-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
InitDoneProc(DBAsyncParmBlkPtr myPB, asyncVarsPtr myVars)
|
|
{
|
|
Handle queryText, *queries;
|
|
short len;
|
|
OSErr rc;
|
|
|
|
/* call status function, if specified */
|
|
rc = CallStatusProc(myVars->statusProc, kDBInitComplete, myPB->result);
|
|
|
|
/* check if successful */
|
|
if (rc == noErr)
|
|
{
|
|
/* DBInit completed successfully, call DBSend */
|
|
|
|
/* get query text */
|
|
queries = *((**(myVars->query)).queryList);
|
|
myVars->queryText = queryText =
|
|
queries[(**(myVars->query)).currQuery - 1];
|
|
MyHLock(queryText, &(myVars->textState));
|
|
len = *((short*)(*queryText));
|
|
|
|
/* we are about to be executing */
|
|
myVars->executing = true;
|
|
|
|
/* get next action */
|
|
myVars->currAction = kDBSend;
|
|
|
|
/* call DBSend asynchronously */
|
|
rc = DBSend(*(myVars->sessIDPtr), *queryText + 2, len, myPB);
|
|
}
|
|
|
|
myPB->result = rc;
|
|
return(rc);
|
|
|
|
} /* InitDoneProc() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SendDoneProc
|
|
*
|
|
* DESCRIPTION: Routine called after DBSend for an asynchronous DBStartQuery
|
|
* completes. If DBSend was successful, calls DBExec.
|
|
*
|
|
* INPUTS: myPB: Async parameter block.
|
|
* myVars: Async variables.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: userCanceledErr
|
|
* Errors from just finished DBSend and DBExec.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 06-21-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
SendDoneProc(DBAsyncParmBlkPtr myPB, asyncVarsPtr myVars)
|
|
{
|
|
OSErr rc;
|
|
|
|
/* call status function, if specified */
|
|
rc = CallStatusProc(myVars->statusProc, kDBSendComplete, myPB->result);
|
|
|
|
/* check if successful */
|
|
if (rc == noErr)
|
|
{
|
|
/* DBSend completed successfully, call DBExec */
|
|
|
|
/* we are about to be executing */
|
|
myVars->executing = true;
|
|
|
|
/* get next action */
|
|
myVars->currAction = kDBExec;
|
|
|
|
/* call DBExec asynchronously */
|
|
rc = DBExec(*(myVars->sessIDPtr), myPB);
|
|
}
|
|
|
|
myPB->result = rc;
|
|
return(rc);
|
|
|
|
} /* SendDoneProc() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: ExecDoneProc
|
|
*
|
|
* DESCRIPTION: Routine called after DBExec for an asynchronous DBStartQuery
|
|
* completes. Just returns the result.
|
|
*
|
|
* INPUTS: myPB: Async parameter block.
|
|
* myVars: Async variables.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: userCanceledErr
|
|
* Errors from just finished DBExec.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 06-21-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
ExecDoneProc(DBAsyncParmBlkPtr myPB, asyncVarsPtr myVars)
|
|
{
|
|
/* call status function, if specified */
|
|
myPB->result = CallStatusProc(myVars->statusProc, kDBExecComplete, myPB->result);
|
|
|
|
/* this was the last call we needed to do */
|
|
/* but we don't need to set currAction since SMIdle knows this */
|
|
/* myVars->currAction = kAllDone; */
|
|
|
|
/* just return result from DBExec */
|
|
return(myPB->result);
|
|
|
|
} /* ExecDoneProc() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: StateDoneProc
|
|
*
|
|
* DESCRIPTION: Routine called after DBState for an asynchronous
|
|
* DBGetQueryResults completes. If DBState was successful
|
|
* and there is data to return, calls DBGetItem.
|
|
*
|
|
* INPUTS: myPB: Async parameter block.
|
|
* myVars: Async variables.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Errors from just finished DBState, SetupResults,
|
|
* and DBGetItem.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 06-21-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
StateDoneProc(DBAsyncParmBlkPtr myPB, asyncVarsPtr myVars)
|
|
{
|
|
short rc;
|
|
|
|
/* we only care if there is data to return */
|
|
if (myPB->result == rcDBValue)
|
|
{
|
|
/* program complete, possibly results available */
|
|
|
|
/* use common code to initialize results */
|
|
rc = SetupResults(myVars->sessID, &(myVars->snarf), myVars->results,
|
|
&(myVars->oldResults), &(myVars->currOffset), &(myVars->currCol));
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* current offset in old and user results is the same */
|
|
myVars->oldCurrOffset = myVars->currOffset;
|
|
|
|
/* didn't go through a row yet */
|
|
myVars->endLastRowData = 0;
|
|
myVars->endLastRowInfo = 0;
|
|
|
|
myVars->firsttime = true;
|
|
|
|
/* set up to call DBGetItem */
|
|
myVars->executing = true;
|
|
|
|
/* get next action */
|
|
myVars->currAction = kDBGetItem;
|
|
|
|
/* we are about to get info on the current column */
|
|
myVars->doingGetItemInfo = true;
|
|
|
|
/* get information on current column without getting data */
|
|
myVars->dataType = typeAnyType;
|
|
rc = DBGetItem(myVars->sessID, myVars->timeout, &(myVars->dataType),
|
|
&(myVars->len), &(myVars->places), &(myVars->flags), NULL, myPB);
|
|
}
|
|
|
|
if (rc != noErr)
|
|
{
|
|
/* error occurred in SetupResults or DBGetItem, set up for return */
|
|
myPB->result = rc;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* no data or some other error */
|
|
rc = myPB->result;
|
|
if (rc == noErr)
|
|
{
|
|
/*
|
|
There's no data to return, but we have to call AllDoneProc here
|
|
since idle considers noErr to mean that we started the DBGetItem
|
|
successfully.
|
|
*/
|
|
(void)AllDoneProc(myPB, myVars);
|
|
}
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* StateDoneProc() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: GetItemDoneProc
|
|
*
|
|
* DESCRIPTION: Routine called after DBGetItem for an asynchronous
|
|
* DBGetQueryResults completes. Note that DBGetItem can
|
|
* either be called with buffer set to NULL, indicating that
|
|
* we wanted infomation on the current column only, or with
|
|
* buffer set to the value passed into DBGetQueryResults,
|
|
* indicating we got the actual data. In the latter case,
|
|
* if more data is available, we call DBGetItem again, otherwise
|
|
* we indicate to SMIdle that the call has completed.
|
|
*
|
|
* INPUTS: myPB: Async parameter block.
|
|
* myVars: Async variables.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: rcDBValue
|
|
* Errors from just finished DBGetItem, GrowResultsRecord, and
|
|
* next DBGetItem.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-24-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
GetItemDoneProc(DBAsyncParmBlkPtr myPB, asyncVarsPtr myVars)
|
|
{
|
|
short rc, oldlen;
|
|
ResultsRecord *results, *oldResults;
|
|
DBType *typeArray;
|
|
DBColInfoRecord *currInfo;
|
|
|
|
/* see if the DBGetItem that just completed was for info or the
|
|
actual data */
|
|
if (myVars->doingGetItemInfo)
|
|
{
|
|
/* just got info */
|
|
|
|
switch (myPB->result)
|
|
{
|
|
case rcDBNull:
|
|
case rcDBValue:
|
|
/* information retrieved successfully */
|
|
#ifdef DODPRINTF
|
|
dprintf("DBGetItem info - len = %d, dataType = %d, flags = %d", myVars->len,
|
|
myVars->dataType, myVars->flags);
|
|
#endif
|
|
/* grow old results first */
|
|
oldResults = myVars->oldResults;
|
|
if ((rc = GrowResultsRecord(oldResults, myVars->len,
|
|
(myVars->endLastRowData == 0))) == noErr)
|
|
{
|
|
/* old results grown successfully, try growing user results */
|
|
results = myVars->results;
|
|
if ((rc = GrowResultsRecord(results, myVars->len,
|
|
(myVars->endLastRowData == 0))) != noErr)
|
|
{
|
|
/* couldn't grow user results, resize old results */
|
|
SetHandleSize(oldResults->colData, myVars->oldCurrOffset);
|
|
SetHandleSize(oldResults->colInfo,
|
|
GetHandleSize(oldResults->colInfo) - sizeof(DBColInfoRecord));
|
|
if (myVars->endLastRowData == 0)
|
|
{
|
|
SetHandleSize(oldResults->colTypes,
|
|
GetHandleSize(oldResults->colTypes) -
|
|
sizeof(DBType));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (rc != noErr)
|
|
{
|
|
/* error resizing results */
|
|
myPB->result = rc;
|
|
return(myPB->result);
|
|
}
|
|
|
|
/* everything grown OK, update stuff */
|
|
|
|
/* save info on current column */
|
|
oldlen = GetHandleSize(oldResults->colInfo) - sizeof(DBColInfoRecord);
|
|
currInfo = (DBColInfoRecord*)(*(oldResults->colInfo) + oldlen);
|
|
currInfo->len = myVars->len;
|
|
currInfo->places = myVars->places;
|
|
currInfo->flags = myVars->flags;
|
|
|
|
oldlen = GetHandleSize(results->colInfo) - sizeof(DBColInfoRecord);
|
|
currInfo = (DBColInfoRecord*)(*(results->colInfo) + oldlen);
|
|
currInfo->len = myVars->len;
|
|
currInfo->places = myVars->places;
|
|
currInfo->flags = myVars->flags;
|
|
|
|
/* save data type, if necessary */
|
|
if (myVars->endLastRowData == 0)
|
|
{
|
|
typeArray = (DBType*)(*(oldResults->colTypes));
|
|
typeArray[myVars->currCol] = myVars->dataType;
|
|
|
|
typeArray = (DBType*)(*(results->colTypes));
|
|
typeArray[myVars->currCol] = myVars->dataType;
|
|
}
|
|
break;
|
|
|
|
case noErr:
|
|
/* no more data */
|
|
#ifdef DODPRINTF
|
|
dprintf("DBGetItem info - got noErr");
|
|
#endif
|
|
/* get next action */
|
|
myVars->currAction = kAllDone;
|
|
|
|
if (myVars->firsttime)
|
|
{
|
|
/* first time through, so query had no results */
|
|
myPB->result = noErr;
|
|
}
|
|
else
|
|
{
|
|
/* not first time, so we have data to return */
|
|
myPB->result = rcDBValue;
|
|
}
|
|
|
|
return(noErr);
|
|
break;
|
|
|
|
default:
|
|
/* some other error */
|
|
/* should only be rcDBError from DBGetItem */
|
|
#ifdef DODPRINTF
|
|
dprintf("DBGetItem info - got rc = %d", myPB->result);
|
|
#endif
|
|
/* get next action */
|
|
myVars->currAction = kAllDone;
|
|
|
|
return(myPB->result);
|
|
break;
|
|
}
|
|
|
|
/* got here if rcDBNull or rcDBValue */
|
|
myVars->firsttime = false; /* there's at least one column of data */
|
|
|
|
/* we are about to get the actual column, not just the info */
|
|
myVars->doingGetItemInfo = false;
|
|
|
|
/* we are about to be executing */
|
|
myVars->executing = true;
|
|
|
|
/* action still the same */
|
|
/* myVars->currAction = kDBGetItem; */
|
|
|
|
/*
|
|
dprintf("DBGetItem data: colTypes len = %d, colData len = %d",
|
|
GetHandleSize(oldResults->colTypes), GetHandleSize(oldResults->colData));
|
|
dprintf("DBGetItem data: colLens len = %d",
|
|
GetHandleSize(oldResults->colLens));
|
|
*/
|
|
|
|
/* got information on current column successfully, get actual column */
|
|
HLock(results->colData);
|
|
rc = DBGetItem(myVars->sessID, myVars->timeout, &(myVars->dataType),
|
|
&(myVars->len), &(myVars->places), &(myVars->flags),
|
|
*(results->colData) + myVars->currOffset, myPB);
|
|
|
|
if (rc != noErr)
|
|
{
|
|
/* error starting DBGetItem, set up for return */
|
|
myPB->result = rc;
|
|
}
|
|
|
|
return(rc);
|
|
}
|
|
else
|
|
{
|
|
/* just got actual column */
|
|
results = myVars->results;
|
|
oldResults = myVars->oldResults;
|
|
|
|
/* save result of DBGetItem */
|
|
rc = myPB->result;
|
|
|
|
/* call status function, if specified */
|
|
if (myVars->statusProc != NULL)
|
|
{
|
|
if (!(myVars->statusProc)(kDBGetItemComplete, myPB->result,
|
|
myVars->len, myVars->places, myVars->flags, myVars->dataType, *(results->colData)
|
|
+ myVars->currOffset))
|
|
{
|
|
/* status function cancelled */
|
|
rc = userCanceledErr;
|
|
}
|
|
}
|
|
|
|
/* unlock data handle */
|
|
HUnlock(results->colData);
|
|
|
|
switch (myPB->result)
|
|
{
|
|
case rcDBNull:
|
|
case rcDBValue:
|
|
/* got data */
|
|
#ifdef DODPRINTF
|
|
dprintf("DBGetItem - got data of dataType %d len %d, at %X",
|
|
myVars->dataType, myVars->len, (long)*(results->colData) + currOffset);
|
|
#endif
|
|
/* copy data to old results */
|
|
BlockMove(*(results->colData) + myVars->currOffset,
|
|
*(oldResults->colData) + myVars->oldCurrOffset,
|
|
(long)myVars->len);
|
|
|
|
/* update current position in data handle */
|
|
myVars->currOffset += myVars->len;
|
|
myVars->oldCurrOffset += myVars->len;
|
|
|
|
/* check if end of row */
|
|
if (myVars->flags & kDBLastColFlag)
|
|
{
|
|
/* yes, update currCol and endLastRows */
|
|
#ifdef DODPRINTF
|
|
dprintf("DBGetItem - at end of row, col = %d", myVars->currCol);
|
|
#endif
|
|
|
|
if (myVars->endLastRowData == 0)
|
|
{
|
|
/* just went through first row, update results */
|
|
results->numCols = myVars->currCol + 1;
|
|
}
|
|
|
|
myVars->currCol = 0;
|
|
myVars->endLastRowData = myVars->currOffset;
|
|
myVars->endLastRowInfo = GetHandleSize(results->colInfo);
|
|
|
|
/* add one to the number of rows processed */
|
|
results->numRows++;
|
|
|
|
/* we got a complete row, shrink down old results */
|
|
SetHandleSize(oldResults->colData, 0);
|
|
SetHandleSize(oldResults->colInfo, 0);
|
|
myVars->oldCurrOffset = 0;
|
|
}
|
|
else
|
|
{
|
|
/* still in same row */
|
|
myVars->currCol++;
|
|
}
|
|
|
|
if (rc != userCanceledErr)
|
|
{
|
|
/* set up to call DBGetItem */
|
|
myVars->executing = true;
|
|
|
|
/* action still the same */
|
|
/* myVars->currAction = kDBGetItem; */
|
|
|
|
/* we are about to get info on the current column */
|
|
myVars->doingGetItemInfo = true;
|
|
|
|
/*
|
|
dprintf("DBGetItem info: colTypes len = %d, colData len = %d",
|
|
GetHandleSize(oldResults->colTypes), GetHandleSize(oldResults->colData));
|
|
dprintf("DBGetItem info: colLens len = %d",
|
|
GetHandleSize(oldResults->colLens));
|
|
*/
|
|
|
|
/* get information on current column without getting data */
|
|
myVars->dataType = typeAnyType;
|
|
rc = DBGetItem(myVars->sessID, myVars->timeout, &(myVars->dataType),
|
|
&(myVars->len), &(myVars->places), &(myVars->flags), NULL, myPB);
|
|
}
|
|
|
|
if (rc != noErr)
|
|
{
|
|
/* error starting DBGetItem or status function cancelled, set up for return */
|
|
myPB->result = rc;
|
|
}
|
|
|
|
return(rc);
|
|
break;
|
|
|
|
default:
|
|
/* some other error occurred from DBGetItem */
|
|
#ifdef DODPRINTF
|
|
dprintf("DBGetItem - other error %d", myPB->result);
|
|
#endif
|
|
/* save result in case status function changed it */
|
|
myPB->result = rc;
|
|
return(myPB->result);
|
|
break;
|
|
}
|
|
}
|
|
|
|
} /* GetItemDoneProc() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: AllDoneProc
|
|
*
|
|
* DESCRIPTION: State routine called after all routines for an asynchronous call
|
|
* to DBStartQuery or DBGetQueryResults have completed,
|
|
* or a routine ends in an error.
|
|
*
|
|
* INPUTS: myPB: Async parameter block.
|
|
* myVars: Async variables.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: noErr always.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 06-21-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
AllDoneProc(DBAsyncParmBlkPtr myPB, asyncVarsPtr myVars)
|
|
{
|
|
DBAsyncParmBlkPtr asyncPB;
|
|
ResultsRecord *results, *oldResults;
|
|
snarfSessElem **snarf;
|
|
|
|
/* see what we have to do to clean up */
|
|
switch (myVars->currAction)
|
|
{
|
|
/* are we DBStartQuery? */
|
|
case kDBInit:
|
|
case kDBSend:
|
|
case kDBExec:
|
|
/* clean up */
|
|
HSetState((Handle)myVars->query, myVars->queryState);
|
|
HSetState(myVars->queryText, myVars->textState);
|
|
|
|
/* call status function, if specified */
|
|
myPB->result = CallStatusProc(myVars->statusProc, kDBStartQueryComplete, myPB->result);
|
|
break;
|
|
|
|
|
|
/* are we DBGetQueryResults? */
|
|
case kDBState:
|
|
/* do nothing if DBState didn't return rcDBValue */
|
|
/* call status function, if specified */
|
|
myPB->result = CallStatusProc(myVars->statusProc, kDBGetQueryResultsComplete, myPB->result);
|
|
break; /* fix for bug DSL-009 */
|
|
|
|
case kDBGetItem:
|
|
oldResults = myVars->oldResults;
|
|
snarf = myVars->snarf;
|
|
if (myPB->result != rcDBValue)
|
|
{
|
|
/* some error occurred, either out of space or ddev error */
|
|
/* need to back up to last full row */
|
|
|
|
results = myVars->results;
|
|
|
|
if (myVars->endLastRowData == 0)
|
|
{
|
|
/* didn't get one full row, need to dispose of everything */
|
|
DisposeResultsRecord(results);
|
|
|
|
results->numRows = 0;
|
|
results->numCols = 0;
|
|
}
|
|
else
|
|
{
|
|
/* got at least one row */
|
|
/* adjust handle */
|
|
SetHandleSize(results->colData, myVars->endLastRowData);
|
|
SetHandleSize(results->colInfo, myVars->endLastRowInfo);
|
|
}
|
|
|
|
/* update currCol in snarf elem */
|
|
(**snarf).currCol = myVars->currCol;
|
|
|
|
/* roll back types array to current column */
|
|
SetHandleSize(oldResults->colTypes,
|
|
(long)((myVars->currCol+1) * sizeof(DBType)));
|
|
}
|
|
else
|
|
{
|
|
/* we got all the data successfully, so we don't need the old results */
|
|
DisposeResultsRecord(oldResults);
|
|
DisposPtr((Ptr)oldResults);
|
|
(**snarf).oldResults = NULL;
|
|
(**snarf).currCol = 0;
|
|
}
|
|
|
|
/* call status function, if specified */
|
|
myPB->result = CallStatusProc(myVars->statusProc, kDBGetQueryResultsComplete, myPB->result);
|
|
break;
|
|
|
|
} /* switch (myVars->currAction) */
|
|
|
|
/* copy result into application's parameter block */
|
|
asyncPB = myVars->asyncPB;
|
|
asyncPB->result = myPB->result;
|
|
|
|
/* remove pb from list */
|
|
RemovePB(myPB);
|
|
|
|
/* call application's completion routine, if any */
|
|
if (asyncPB->completionProc != NULL)
|
|
{
|
|
/* have to use assembly glue to get pb into A0 */
|
|
CallCompletion(asyncPB);
|
|
}
|
|
|
|
return(noErr);
|
|
|
|
} /* AllDoneProc() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: BuildDDEVList
|
|
*
|
|
* DESCRIPTION: Searches ddev folder for ddevs and builds list.
|
|
* Thanks to Tech Notes 67 and 68. (Will this work with aliases?)
|
|
*
|
|
* INPUTS: root: Pointer to root of ddev list.
|
|
*
|
|
* OUTPUTS: root: Pointer to root of filled in ddev list.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-23-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
void
|
|
BuildDDEVList(ddevElemHndl *root)
|
|
{
|
|
short index = 1;
|
|
OSErr err;
|
|
short vRefNum;
|
|
long dirID;
|
|
CInfoPBRec myCPB;
|
|
char fName[64];
|
|
|
|
/* first, mark all current ddevs as not existing in case one was deleted */
|
|
ClearDDEVList(*root);
|
|
|
|
/* get vRefNum and dirID of folder with ddevs */
|
|
GetDDEVFolder(&vRefNum, &dirID);
|
|
|
|
do
|
|
{
|
|
/* fix for bug DSL-004 - look in ddev folder for ddevs */
|
|
fName[0] = '\0';
|
|
myCPB.hFileInfo.ioNamePtr = fName;
|
|
myCPB.hFileInfo.ioVRefNum = vRefNum; /* folder with ddevs (DSL-004) */
|
|
myCPB.hFileInfo.ioFDirIndex = index;
|
|
myCPB.hFileInfo.ioDirID = dirID; /* using real vRefNum and dirID */
|
|
|
|
err = PBGetCatInfo(&myCPB, false);
|
|
|
|
if (err == noErr)
|
|
{
|
|
if (((myCPB.hFileInfo.ioFlAttrib >> 4) & 0x01) != 1)
|
|
{
|
|
/* this is a file, not a folder */
|
|
/* check for ddev file type */
|
|
if (myCPB.hFileInfo.ioFlFndrInfo.fdType == DDEVTYPE)
|
|
{
|
|
/* ddev file, add to list */
|
|
AddDDEVFile(fName, vRefNum, dirID, root);
|
|
}
|
|
}
|
|
|
|
/* get next file */
|
|
index++;
|
|
}
|
|
else if (err != fnfErr)
|
|
{
|
|
/* some other error occurred, just purge list and return */
|
|
PurgeDDEVList(root);
|
|
return;
|
|
}
|
|
|
|
} while (err != fnfErr);
|
|
|
|
/* get rid of any ddevs that were deleted */
|
|
PurgeDDEVList(root);
|
|
|
|
} /* BuildDDEVList() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: ClearDDEVList
|
|
*
|
|
* DESCRIPTION: Sets "exists" to FALSE in all ddev elements in list.
|
|
* Called just before rebuilding list.
|
|
*
|
|
* INPUTS: root: Root of ddev list.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-26-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
void
|
|
ClearDDEVList(ddevElemHndl root)
|
|
{
|
|
ddevElemHndl curr;
|
|
|
|
curr = root;
|
|
|
|
while (curr)
|
|
{
|
|
(**curr).exists = false;
|
|
curr = (**curr).next;
|
|
}
|
|
|
|
} /* ClearDDEVList() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: PurgeDDEVList
|
|
*
|
|
* DESCRIPTION: Deletes all elements in ddev list with "exists" set to FALSE.
|
|
*
|
|
* INPUTS: root: Pointer to root of ddev list.
|
|
*
|
|
* OUTPUTS: root: Pointer to root of purged ddev list.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-26-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
void
|
|
PurgeDDEVList(ddevElemHndl *root)
|
|
{
|
|
ddevElemHndl curr, next, prev;
|
|
ddevElem *p;
|
|
|
|
curr = *root;
|
|
prev = NULL;
|
|
|
|
while (curr != NULL)
|
|
{
|
|
if ((**curr).exists == false)
|
|
{
|
|
/* check if we're removing the root */
|
|
if (curr == *root)
|
|
*root = (**curr).next;
|
|
next = (**curr).next;
|
|
|
|
/* get rid of string pointers */
|
|
HLock((Handle)curr);
|
|
p = *curr;
|
|
|
|
if (p->name)
|
|
DisposPtr(p->name);
|
|
if (p->fname)
|
|
DisposPtr(p->fname);
|
|
|
|
HUnlock((Handle)curr);
|
|
|
|
DisposHandle((Handle)curr);
|
|
|
|
curr = next;
|
|
if (prev != NULL)
|
|
(**prev).next = curr;
|
|
}
|
|
else
|
|
{
|
|
prev = curr;
|
|
curr = (**curr).next;
|
|
}
|
|
}
|
|
|
|
} /* PurgeDDEVList() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: AddDDEVFile
|
|
*
|
|
* DESCRIPTION: Adds specified ddev file to list, if it's not there already.
|
|
*
|
|
* INPUTS: fname: Name of file
|
|
* vRefNum: vRefNum of folder with ddevs.
|
|
* dirID: dirID of folder with ddevs.
|
|
* root: Pointer to root of list.
|
|
*
|
|
* OUTPUTS: root: Pointer to root of list with file added.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-23-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
void
|
|
AddDDEVFile(const Str255 fname, short vRefNum, long dirID, ddevElemHndl *root)
|
|
{
|
|
ddevElem **curr, *currptr;
|
|
char currState;
|
|
char **ddevNameRes;
|
|
short refNum;
|
|
DDEVFlags **flagsRes;
|
|
Boolean canAsync;
|
|
char ddevName[64];
|
|
|
|
/* first, search to see if file exists in list already */
|
|
curr = *root;
|
|
|
|
while (curr)
|
|
{
|
|
MyHLock((Handle)curr, &currState);
|
|
|
|
/* problem - can't use IUCompString at patch time */
|
|
if ((IUCompString((**curr).fname, fname) == 0) &&
|
|
((**curr).vRefNum == vRefNum) && ((**curr).dirID == dirID))
|
|
{
|
|
/* file name already exists, set exists and return */
|
|
(**curr).exists = true;
|
|
HSetState((Handle)curr, currState);
|
|
return;
|
|
}
|
|
|
|
HSetState((Handle)curr, currState);
|
|
curr = (**curr).next;
|
|
}
|
|
|
|
/* file not in list already, open it to get STR resource */
|
|
refNum = HOpenResFile(vRefNum, dirID, fname, fsRdWrPerm);
|
|
if (refNum != -1)
|
|
{
|
|
/* file open, get STR resource with name */
|
|
ddevNameRes = (char**)Get1Resource('STR ', kDDEVName);
|
|
if (ddevNameRes != NULL)
|
|
{
|
|
/* save ddev name - note that not locking ddevNameRes depends on pstrcpy just doing BlockMove */
|
|
// HLock((Handle)ddevNameRes);
|
|
pstrcpy(ddevName, *ddevNameRes);
|
|
// HUnlock((Handle)ddevNameRes);
|
|
|
|
/* get 'dflg' resource to check async support */
|
|
flagsRes = (DDEVFlags**)Get1Resource(DDEVFLAGRESTYPE, kDDEVFlags);
|
|
if (flagsRes)
|
|
{
|
|
canAsync = ((**flagsRes).flags & kAsyncSupported) != 0;
|
|
}
|
|
else
|
|
{
|
|
/* no resource, assume we can't do async */
|
|
canAsync = false;
|
|
}
|
|
|
|
/* see if we already have a ddev with this name */
|
|
if (FindDDEV(ddevName, *root) == NULL)
|
|
{
|
|
/* no, we have a valid ddev, add it to the list */
|
|
curr = (ddevElemHndl)NewHandleSysClear(sizeof(ddevElem));
|
|
HLock((Handle)curr);
|
|
currptr = *curr;
|
|
currptr->next = *root;
|
|
currptr->exists = true;
|
|
|
|
/* allocate string pointers */
|
|
currptr->name = (char*)NewPtrSysClear(ddevName[0] + 1);
|
|
currptr->fname = (char*)NewPtrSysClear(fname[0] + 1);
|
|
pstrcpy(currptr->name, ddevName);
|
|
pstrcpy(currptr->fname, fname);
|
|
|
|
currptr->vRefNum = vRefNum;
|
|
currptr->dirID = dirID;
|
|
currptr->canAsync = canAsync;
|
|
|
|
HUnlock((Handle)curr);
|
|
|
|
/* insert into list */
|
|
*root = curr;
|
|
}
|
|
}
|
|
|
|
CloseResFile(refNum);
|
|
}
|
|
|
|
} /* AddDDEVFile() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: FindAndBuildDDEV
|
|
*
|
|
* DESCRIPTION: Looks for ddev with specified name in specified list.
|
|
* If not found, tries to rebuild the list again and find it.
|
|
* Called by SMInit and SMGetConnInfo.
|
|
*
|
|
* INPUTS: name: Name of ddev from STR resource. This is
|
|
* a Pascal string.
|
|
* rootPtr: Pointer to root of list.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Handle to ddevElem, or NULL if none found.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-30-90 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1990
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
ddevElemHndl
|
|
FindAndBuildDDEV(char *name, ddevElemHndl *rootPtr)
|
|
{
|
|
register ddevElemHndl ddevH;
|
|
|
|
/* look for ddevElem with specified ddevName */
|
|
ddevH = FindDDEV(name, *rootPtr);
|
|
if (ddevH == NULL)
|
|
{
|
|
/*
|
|
We couldn't find the specified ddev. This means that either
|
|
this is the first time DBInit or DBGetConnInfo was called, or
|
|
the ddev doesn't exist. Of course, the user may have installed
|
|
the ddev since the last time we built the list. Question:
|
|
What about ddevs that have INIT code in them? Answer: The
|
|
user is hosed if he installs them without rebooting.
|
|
*/
|
|
BuildDDEVList(rootPtr);
|
|
|
|
/* try again */
|
|
ddevH = FindDDEV(name, *rootPtr);
|
|
}
|
|
|
|
return(ddevH);
|
|
|
|
} /* FindAndBuildDDEV() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: FindDDEV
|
|
*
|
|
* DESCRIPTION: Looks for ddev with specified name in specified list.
|
|
*
|
|
* INPUTS: name: Name of ddev from STR resource. This is
|
|
* a Pascal string.
|
|
* root: Root of list.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Handle to ddevElem, or NULL if none found.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-24-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
ddevElemHndl
|
|
FindDDEV(char *name, ddevElemHndl root)
|
|
{
|
|
ddevElemHndl curr = root;
|
|
char currState;
|
|
|
|
while (curr)
|
|
{
|
|
MyHLock((Handle)curr, &currState);
|
|
if ((**curr).exists && (IUCompString(name, (**curr).name) == 0))
|
|
{
|
|
/* found ddev */
|
|
HSetState((Handle)curr, currState);
|
|
return(curr);
|
|
}
|
|
|
|
HSetState((Handle)curr, currState);
|
|
curr = (**curr).next;
|
|
}
|
|
|
|
/* couldn't find ddev */
|
|
return(NULL);
|
|
|
|
} /* FindDDEV() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: OpenDDEVFile
|
|
*
|
|
* DESCRIPTION: Opens specified DDEV file. File is opened in the system heap.
|
|
*
|
|
* INPUTS: ddevH: Handle to ddevElem to open.
|
|
*
|
|
* OUTPUTS: refNum: refNum of open file.
|
|
*
|
|
* RETURNS: Errors from OpenRFPerm.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-26-89 JSM - Created.
|
|
* 11-07-89 JSM - Use HOpenResFile.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
OpenDDEVFile(ddevElemHndl ddevH, short *refNum)
|
|
{
|
|
ddevElemPtr ddevP;
|
|
short rc;
|
|
THz currZone;
|
|
char currState;
|
|
|
|
/* save current zone */
|
|
currZone = GetZone();
|
|
|
|
/* make sure current zone is System Heap */
|
|
SetZone(SystemZone());
|
|
|
|
MyHLock((Handle)ddevH, &currState);
|
|
ddevP = *ddevH;
|
|
|
|
/* open the ddev */
|
|
*refNum = HOpenResFile(ddevP->vRefNum, ddevP->dirID,
|
|
ddevP->fname, fsRdWrPerm);
|
|
rc = RESERR;
|
|
|
|
HSetState((Handle)ddevH, currState);
|
|
|
|
/* restore zone */
|
|
SetZone(currZone);
|
|
|
|
/* return any error from OpenRFPerm */
|
|
return(rc);
|
|
|
|
} /* OpenDDEVFile() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: CallDDEV
|
|
*
|
|
* DESCRIPTION: Calls specified ddev with specified parameter block.
|
|
* If an async call is indicated, checks to see if ddev
|
|
* will support it. Also sets up ddevStorage in DDEVParams.
|
|
* All calls to ddevs pass through here!
|
|
*
|
|
* INPUTS: ddevH: Handle to ddevElem with info.
|
|
* params: Pointer to parameter block for ddev.
|
|
*
|
|
* OUTPUTS: ddevH: Data may be changed.
|
|
*
|
|
* RETURNS: rcDBAsyncNotSupp
|
|
* Errors from ddev.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 05-23-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
CallDDEV(ddevElemHndl ddevH, DDEVParams *params)
|
|
{
|
|
ddevElemPtr ddevP;
|
|
short rc;
|
|
char currState;
|
|
|
|
MyHLock((Handle)ddevH, &currState);
|
|
ddevP = *ddevH;
|
|
|
|
/* check if we need to support async */
|
|
if (params->asyncPB)
|
|
{
|
|
if (!ddevP->canAsync)
|
|
{
|
|
/* ddev doesn't support async */
|
|
HSetState((Handle)ddevH, currState);
|
|
return(rcDBAsyncNotSupp);
|
|
}
|
|
else
|
|
{
|
|
/* asynchronous call, we need to save ddev handle
|
|
in case of a later DBKill */
|
|
((asyncVarsPtr)(params->asyncPB->reserved))->ddevH = ddevH;
|
|
}
|
|
}
|
|
|
|
/* pass in storage */
|
|
params->ddevStorage = ddevP->ddevStorage;
|
|
|
|
/* call ddev with specified parameter block */
|
|
rc = ((DDEVPtr)StripAddress((Ptr)*(ddevP->ddev)))(params);
|
|
|
|
/* save ddev's storage for him */
|
|
ddevP->ddevStorage = params->ddevStorage;
|
|
|
|
HSetState((Handle)ddevH, currState);
|
|
|
|
return(rc);
|
|
|
|
} /* CallDDEV() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: GetUniqueSnarfID
|
|
*
|
|
* DESCRIPTION: Returns a unique SnarfMan session ID. Assumes list is ordered.
|
|
*
|
|
* INPUTS: root: Root of Snarf session list.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Unique ID, always greater than 0.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-24-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
long
|
|
GetUniqueSnarfID(snarfSessElemHndl root)
|
|
{
|
|
long id = 1;
|
|
Boolean done = false, found;
|
|
snarfSessElemHndl curr;
|
|
|
|
while (true)
|
|
{
|
|
/* search list for current ID */
|
|
curr = root;
|
|
found = false;
|
|
|
|
while (curr && !found)
|
|
{
|
|
/* see if the current cell matches the id */
|
|
if ((**curr).snarfID == id)
|
|
{
|
|
/* yes, need to try again */
|
|
found = true;
|
|
}
|
|
else
|
|
{
|
|
/* see if the current cell is greater than the id */
|
|
if ((**curr).snarfID > id)
|
|
{
|
|
/* yes, we can use this id */
|
|
return(id);
|
|
}
|
|
else
|
|
{
|
|
curr = (**curr).next;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!found)
|
|
{
|
|
/* no matching id found */
|
|
return(id);
|
|
}
|
|
|
|
/* id already in use, try again */
|
|
id++;
|
|
}
|
|
|
|
} /* GetUniqueSnarfID() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: FindSnarfID
|
|
*
|
|
* DESCRIPTION: Looks for cell with specified snarf ID in specified list.
|
|
*
|
|
* INPUTS: id: ID of cell to look for.
|
|
* root: Root of list.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Handle to snarfSessElem, or NULL if none found.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-26-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
snarfSessElemHndl
|
|
FindSnarfID(long id, snarfSessElemHndl root)
|
|
{
|
|
snarfSessElemHndl curr = root;
|
|
|
|
while (curr)
|
|
{
|
|
if ((**curr).snarfID == id)
|
|
{
|
|
/* found ID */
|
|
return(curr);
|
|
}
|
|
|
|
curr = (**curr).next;
|
|
}
|
|
|
|
/* couldn't find ID */
|
|
return(NULL);
|
|
|
|
} /* FindSnarfID() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: ConvertSessIDToSnarfID
|
|
*
|
|
* DESCRIPTION: Convert ddev specific session ID to global Snarf ID.
|
|
*
|
|
* INPUTS: sessID: Session ID to convert.
|
|
* ddevH: ddev which owns session.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Snarf ID, or 0 if no match.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 08-28-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
long
|
|
ConvertSessIDToSnarfID(long sessID, ddevElemHndl ddevH)
|
|
{
|
|
sessElemHndl sessH;
|
|
snarfSessElemHndl snarfH;
|
|
snarfGlobPtr glob;
|
|
Boolean found;
|
|
|
|
found = false;
|
|
sessH = (**ddevH).sessRoot;
|
|
|
|
/* look for session cell hung off of ddev */
|
|
while (sessH && !found)
|
|
{
|
|
if ((**sessH).sessID == sessID)
|
|
found = true;
|
|
else
|
|
sessH = (**sessH).next;
|
|
}
|
|
|
|
if (!found)
|
|
/* bad session ID */
|
|
return(0);
|
|
|
|
/* now, scan for this session cell in the snarf list */
|
|
found = false;
|
|
glob = GetGlobals();
|
|
snarfH = glob->snarfRoot;
|
|
|
|
while (snarfH && !found)
|
|
{
|
|
if ((**snarfH).sess == sessH)
|
|
found = true;
|
|
else
|
|
snarfH = (**snarfH).next;
|
|
}
|
|
|
|
if (!found)
|
|
/* bad session ID */
|
|
return(0);
|
|
else
|
|
return((**snarfH).snarfID);
|
|
|
|
} /* ConvertSessIDToSnarfID() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: InsertSessionCell
|
|
*
|
|
* DESCRIPTION: Inserts a session cell into a ddev's list.
|
|
*
|
|
* INPUTS: root: Handle to root of ddev session list.
|
|
* cell: Session cell to insert.
|
|
*
|
|
* OUTPUTS: root: May be modified.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-24-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
void
|
|
InsertSessionCell(sessElemHndl *root, sessElemHndl cell)
|
|
{
|
|
/* just stick it at the front for now */
|
|
(**cell).next = *root;
|
|
*root = cell;
|
|
|
|
} /* InsertSessionCell() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: InsertSnarfCell
|
|
*
|
|
* DESCRIPTION: Inserts a Snarf session cell into global list.
|
|
*
|
|
* INPUTS: root: Handle to root of global list.
|
|
* cell: Session cell to insert.
|
|
*
|
|
* OUTPUTS: root: May be modified.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-24-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
void
|
|
InsertSnarfCell(snarfSessElemHndl *root, snarfSessElemHndl cell)
|
|
{
|
|
snarfSessElemHndl curr, last = NULL;
|
|
Boolean done = false;
|
|
|
|
curr = *root;
|
|
if (curr == NULL)
|
|
{
|
|
/* first cell in list */
|
|
*root = cell;
|
|
return;
|
|
}
|
|
|
|
/* list is ordered numerically */
|
|
while (curr && !done)
|
|
{
|
|
if ((**cell).snarfID > (**curr).snarfID)
|
|
{
|
|
/* cell goes after curr */
|
|
last = curr;
|
|
curr = (**curr).next;
|
|
}
|
|
else
|
|
{
|
|
/* cell goes before curr */
|
|
done = true;
|
|
}
|
|
}
|
|
|
|
if (last)
|
|
{
|
|
/* not adding at root */
|
|
(**cell).next = (**last).next;
|
|
(**last).next = cell;
|
|
}
|
|
else
|
|
{
|
|
(**cell).next = curr;
|
|
*root = cell;
|
|
}
|
|
|
|
} /* InsertSnarfCell() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: MakePB
|
|
*
|
|
* DESCRIPTION: Allocate and initialize a DBAsyncParamBlockRec and its associated
|
|
* async variables. We need our own parameter block for every
|
|
* async call.
|
|
*
|
|
* INPUTS: params: DDEVParams to copy.
|
|
* asyncPB: DBAsyncParmBlkPtr passed in by application.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Pointer to created asyncPB.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 06-29-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
DBAsyncParmBlkPtr
|
|
MakePB(DDEVParamsPtr params, DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
snarfGlobPtr glob;
|
|
DBAsyncParmBlkPtr myPB;
|
|
asyncVarsPtr myVars;
|
|
|
|
glob = GetGlobals();
|
|
|
|
/* allocate space */
|
|
myPB = (DBAsyncParmBlkPtr)NewPtrSysClear(sizeof(DBAsyncParamBlockRec));
|
|
myVars = (asyncVarsPtr)NewPtrSysClear(sizeof(asyncVars));
|
|
|
|
/* make myPB point to variables */
|
|
myPB->reserved = (long)myVars;
|
|
|
|
/* set up completion routine */
|
|
myPB->completionProc = (ProcPtr)StripAddress(*(glob->completionRes));
|
|
|
|
/* keep track of application's asyncPB */
|
|
myVars->asyncPB = asyncPB;
|
|
|
|
/* app made call asynchronously, set result */
|
|
asyncPB->result = 1;
|
|
|
|
/* assume that this is not a high level call */
|
|
myVars->highlevel = false;
|
|
|
|
/* call about to be executing, so tell DBIdle to ignore it */
|
|
myVars->executing = true;
|
|
|
|
if (params)
|
|
{
|
|
myVars->params = (DDEVParamsPtr)NewPtrSysClear(sizeof(DDEVParams));
|
|
|
|
/* copy ddev parameters */
|
|
BlockMove((Ptr)params, (Ptr)myVars->params, sizeof(DDEVParams));
|
|
|
|
/* we want ddev to use our asyncPB */
|
|
(myVars->params)->asyncPB = myPB;
|
|
|
|
/* set current action */
|
|
myVars->currAction = params->message;
|
|
}
|
|
|
|
return(myPB);
|
|
|
|
} /* MakePB() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: InsertPB
|
|
*
|
|
* DESCRIPTION: Inserts a DBAsyncParmBlkPtr into the global list.
|
|
*
|
|
* Declared as a pascal function because compiler generates smaller code.
|
|
*
|
|
* INPUTS: asyncPB: Pointer to pb to insert.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 06-12-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal void
|
|
InsertPB(DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
snarfGlobPtr glob;
|
|
|
|
glob = GetGlobals();
|
|
|
|
/* just put it at the front of the list */
|
|
((asyncVarsPtr)(asyncPB->reserved))->next = glob->pbRoot;
|
|
glob->pbRoot = asyncPB;
|
|
|
|
} /* InsertPB() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: RemovePB
|
|
*
|
|
* DESCRIPTION: Removes a DBAsyncParmBlkPtr from the global list.
|
|
* Disposes of the memory used by it and its variables.
|
|
*
|
|
* Declared as a pascal function because compiler generates smaller code.
|
|
*
|
|
* INPUTS: asyncPB: Pointer to pb to remove.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 06-12-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal void
|
|
RemovePB(DBAsyncParmBlkPtr asyncPB)
|
|
{
|
|
snarfGlobPtr glob;
|
|
asyncVarsPtr myVars, lastVars;
|
|
DBAsyncParmBlkPtr curr, last;
|
|
|
|
glob = GetGlobals();
|
|
last = NULL;
|
|
curr = glob->pbRoot;
|
|
|
|
while (curr && (curr != asyncPB))
|
|
{
|
|
last = curr;
|
|
myVars = (asyncVarsPtr)curr->reserved;
|
|
curr = myVars->next;
|
|
}
|
|
|
|
if (curr)
|
|
{
|
|
/* fix up list */
|
|
myVars = (asyncVarsPtr)curr->reserved;
|
|
if (last)
|
|
{
|
|
lastVars = (asyncVarsPtr)last->reserved;
|
|
lastVars->next = myVars->next;
|
|
}
|
|
else
|
|
{
|
|
/* replacing root */
|
|
glob->pbRoot = myVars->next;
|
|
}
|
|
|
|
/* dispose of variables and pb */
|
|
if (myVars->params)
|
|
DisposPtr((Ptr)(myVars->params));
|
|
DisposPtr((Ptr)myVars);
|
|
DisposPtr((Ptr)asyncPB);
|
|
}
|
|
|
|
} /* RemovePB() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: FindAppPB
|
|
*
|
|
* DESCRIPTION: Finds the parameter block in the global list that has
|
|
* the specified PB in the "asyncPB" field of its async variables.
|
|
*
|
|
* INPUTS: appPB: Pointer to pb to find.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: PB with appPB, or NULL if none found.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 07-28-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
DBAsyncParmBlkPtr
|
|
FindAppPB(DBAsyncParmBlkPtr appPB)
|
|
{
|
|
snarfGlobPtr glob;
|
|
asyncVarsPtr myVars;
|
|
DBAsyncParmBlkPtr realPB, curr;
|
|
|
|
glob = GetGlobals();
|
|
realPB = NULL;
|
|
curr = glob->pbRoot;
|
|
|
|
while (curr && !realPB)
|
|
{
|
|
/* get variables for this PB */
|
|
myVars = (asyncVarsPtr)curr->reserved;
|
|
|
|
/* check if it points to the application's PB */
|
|
if (myVars->asyncPB == appPB)
|
|
/* yes, return it */
|
|
realPB = curr;
|
|
|
|
curr = myVars->next;
|
|
}
|
|
|
|
return(realPB);
|
|
|
|
} /* FindAppPB() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: GetDDEVFolder
|
|
*
|
|
* DESCRIPTION: Returns vRefNum and dirID of folder with ddevs. This is
|
|
* the Extensions Folder.
|
|
*
|
|
* INPUTS: vRefNum: Pointer where vRefNum is returned.
|
|
* dirID: Pointer where dirID is returned.
|
|
*
|
|
* OUTPUTS: vRefNum: Filled in.
|
|
* dirID: Filled in.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 05-23-89 JSM - Created.
|
|
* 11-07-89 JSM - Modified to return dirID.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
void
|
|
GetDDEVFolder(short *vRefNum, long *dirID)
|
|
{
|
|
/*
|
|
Find the Extensions Folder on the current system disk,
|
|
creating it if necessary, and ignoring errors.
|
|
*/
|
|
FindFolder(kOnSystemDisk, kExtensionFolderType, kCreateFolder,
|
|
vRefNum, dirID);
|
|
|
|
} /* GetDDEVFolder() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: InitResultsRecord
|
|
*
|
|
* DESCRIPTION: Initialize fields of specified ResultsRecord. Allocates
|
|
* empty handles and sets numRows and numCols to 0.
|
|
*
|
|
* INPUTS: results: Pointer to ResultsRecord.
|
|
* inSysHeap: If TRUE, handles allocated in sys heap.
|
|
*
|
|
* OUTPUTS: results: ResultsRecord initilized.
|
|
*
|
|
* RETURNS: Errors from NewHandle.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 09-11-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
InitResultsRecord(ResultsRecord *results, Boolean inSysHeap)
|
|
{
|
|
short rc;
|
|
|
|
/* zero out whole record first */
|
|
mymemclear((char*)results, sizeof(ResultsRecord));
|
|
|
|
/* allocate empty handles initially */
|
|
if (inSysHeap)
|
|
results->colTypes = NewHandleSys(NULL);
|
|
else
|
|
results->colTypes = NewHandle(NULL);
|
|
|
|
if ((rc = MemError()) == noErr)
|
|
{
|
|
if (inSysHeap)
|
|
results->colData = NewHandleSys(NULL);
|
|
else
|
|
results->colData = NewHandle(NULL);
|
|
|
|
if ((rc = MemError()) == noErr)
|
|
{
|
|
if (inSysHeap)
|
|
results->colInfo = NewHandleSys(NULL);
|
|
else
|
|
results->colInfo = NewHandle(NULL);
|
|
|
|
rc = MemError();
|
|
}
|
|
}
|
|
|
|
if (rc != noErr)
|
|
{
|
|
/* error occurred on one of the NewHandles */
|
|
/* may need to clean up colTypes and/or colData */
|
|
if (results->colTypes)
|
|
{
|
|
DisposHandle(results->colTypes);
|
|
results->colTypes = NULL;
|
|
|
|
if (results->colData)
|
|
{
|
|
DisposHandle(results->colData);
|
|
results->colData = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* InitResultsRecord() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: GrowResultsRecord
|
|
*
|
|
* DESCRIPTION: Grows handles in specified ResultsRecord in preparation
|
|
* for new data. If an error occurs at any time, rolls
|
|
* back any changes.
|
|
*
|
|
* INPUTS: results: Pointer to ResultsRecord.
|
|
* len: Length of data about to be added.
|
|
* inFirstRow: If TRUE, in first row, and colTypes
|
|
* will be grown.
|
|
*
|
|
* OUTPUTS: results: ResultsRecord with expanded handles.
|
|
*
|
|
* RETURNS: Errors from SetHandleSize.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 11-29-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
GrowResultsRecord(ResultsRecord *results, short len, Boolean inFirstRow)
|
|
{
|
|
short rc;
|
|
Handle dataH, infoH, typeH;
|
|
Boolean dataGrown, infoGrown;
|
|
|
|
/* we haven't grown anything yet */
|
|
dataGrown = false;
|
|
infoGrown = false;
|
|
|
|
/* grow data handle */
|
|
dataH = results->colData;
|
|
SetHandleSize(dataH, GetHandleSize(dataH) + (long)len);
|
|
if ((rc = MemError()) == noErr)
|
|
{
|
|
/* data handle grown OK, grow length handle */
|
|
dataGrown = true;
|
|
|
|
infoH = results->colInfo;
|
|
SetHandleSize(infoH, GetHandleSize(infoH) + sizeof(DBColInfoRecord));
|
|
|
|
rc = MemError();
|
|
}
|
|
|
|
/* if we're in the first row, have to grow dataType array */
|
|
if (inFirstRow && (rc == noErr))
|
|
{
|
|
/* info handle grown OK */
|
|
infoGrown = true;
|
|
|
|
typeH = results->colTypes;
|
|
SetHandleSize(typeH, GetHandleSize(typeH) + sizeof(DBType));
|
|
|
|
rc = MemError();
|
|
}
|
|
|
|
if (rc != noErr)
|
|
{
|
|
/* an error occurred, roll back to original sizes */
|
|
if (dataGrown)
|
|
SetHandleSize(dataH, GetHandleSize(dataH) - (long)len);
|
|
|
|
if (infoGrown)
|
|
SetHandleSize(infoH, GetHandleSize(infoH) - sizeof(DBColInfoRecord));
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* GrowResultsRecord() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: SetupResults
|
|
*
|
|
* DESCRIPTION: Common code for both synchronous and asynchronous
|
|
* DBGetQueryResults. Initializes user results and
|
|
* copies over any old results.
|
|
*
|
|
* INPUTS: sessID: ID of current session.
|
|
* snarf: Pointer for snarfSessElemHndl.
|
|
* results: Pointer for user's ResultsRecord.
|
|
* oldResults: Pointer for old ResultsRecord pointer.
|
|
* currOffset: Pointer for currOffset.
|
|
* currCol: Pointer for currCol.
|
|
*
|
|
* OUTPUTS: snarf: Filled in with snarfSessElemHndl.
|
|
* results: Initialized user results with any old data.
|
|
* oldResults: Allocated, if necessary, and initialized.
|
|
* currOffset: Set up based on oldResults.
|
|
* currCol: Set up based on oldResults.
|
|
*
|
|
* RETURNS: rcDBBadSessID
|
|
* Errors from InitResultsRecord, NewPtrSys, and SetHandleSize.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 12-06-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
SetupResults(long sessID, snarfSessElemHndl *snarfPtr, ResultsRecord *results,
|
|
ResultsRecord **oldResultsPtr, long *currOffset, short *currCol)
|
|
{
|
|
snarfSessElem **snarf;
|
|
short rc;
|
|
Handle typeH, dataH, infoH;
|
|
ResultsRecord *oldResults;
|
|
long oldTypesLen, oldDataLen, oldInfoLen;
|
|
|
|
/* find snarf ID */
|
|
if ((snarf = *snarfPtr = FindSnarfID(sessID, (GetGlobals())->snarfRoot))
|
|
== NULL)
|
|
{
|
|
/* bad session ID */
|
|
/* this should never happen, or the DBState would have failed */
|
|
rc = rcDBBadSessID;
|
|
}
|
|
else
|
|
{
|
|
/* initialize results in app heap */
|
|
rc = InitResultsRecord(results, false);
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
typeH = results->colTypes;
|
|
dataH = results->colData;
|
|
infoH = results->colInfo;
|
|
|
|
/* see if there are any old results */
|
|
if ((**snarf).oldResults == NULL)
|
|
{
|
|
/* there were no previous results that weren't returned */
|
|
|
|
/* allocate empty ResultsRecord to keep old results */
|
|
oldResults = *oldResultsPtr =
|
|
(ResultsRecord*)NewPtrSys(sizeof(ResultsRecord));
|
|
|
|
if ((rc = MemError()) == noErr)
|
|
{
|
|
/* initialize old results in sys heap */
|
|
rc = InitResultsRecord(oldResults, true);
|
|
}
|
|
|
|
if (rc != noErr)
|
|
{
|
|
/* error allocating or initializing ResultsRecord */
|
|
if (oldResults)
|
|
DisposPtr((Ptr)oldResults);
|
|
|
|
/* dispose of user's ResultsRecord */
|
|
DisposeResultsRecord(results);
|
|
}
|
|
else
|
|
{
|
|
/* save results */
|
|
(**snarf).oldResults = oldResults;
|
|
|
|
/* we're starting at the beginning */
|
|
*currCol = 0;
|
|
*currOffset = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* there were some old results, copy them to the user */
|
|
oldResults = *oldResultsPtr = (**snarf).oldResults;
|
|
|
|
/* we're starting in the middle of a row */
|
|
*currCol = (**snarf).currCol;
|
|
|
|
/* grow handles accordingly */
|
|
SetHandleSize(typeH,
|
|
oldTypesLen = GetHandleSize(oldResults->colTypes));
|
|
rc = MemError();
|
|
|
|
if (rc == noErr)
|
|
{
|
|
SetHandleSize(dataH,
|
|
oldDataLen = GetHandleSize(oldResults->colData));
|
|
rc = MemError();
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* point to end of data */
|
|
*currOffset = oldDataLen;
|
|
|
|
SetHandleSize(infoH,
|
|
oldInfoLen = GetHandleSize(oldResults->colInfo));
|
|
rc = MemError();
|
|
}
|
|
|
|
if (rc == noErr)
|
|
{
|
|
/* move in stuff */
|
|
BlockMove(*(oldResults->colTypes), *typeH,
|
|
oldTypesLen);
|
|
BlockMove(*(oldResults->colData), *dataH,
|
|
oldDataLen);
|
|
BlockMove(*(oldResults->colInfo), *infoH,
|
|
oldInfoLen);
|
|
}
|
|
else
|
|
{
|
|
/* an error occurred trying to resize handles */
|
|
|
|
/* dispose of user's ResultsRecord */
|
|
DisposeResultsRecord(results);
|
|
}
|
|
}
|
|
}
|
|
|
|
return(rc);
|
|
|
|
} /* SetupResults() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: DisposeResultsRecord
|
|
*
|
|
* DESCRIPTION: Dispose of handles inside a results record.
|
|
* Assumes all handles are allocated.
|
|
*
|
|
* Declared as a pascal function because compiler generates smaller code.
|
|
*
|
|
* INPUTS: results: Pointer to results to be disposed of.
|
|
*
|
|
* OUTPUTS: results: colTypes, colData, colInfo are all nulled.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 12-06-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal void
|
|
DisposeResultsRecord(ResultsRecord *results)
|
|
{
|
|
DisposHandle(results->colTypes);
|
|
DisposHandle(results->colData);
|
|
DisposHandle(results->colInfo);
|
|
results->colTypes = NULL;
|
|
results->colData = NULL;
|
|
results->colInfo = NULL;
|
|
|
|
} /* DisposeResultsRecord() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: CallStatusProc
|
|
*
|
|
* DESCRIPTION: Common code to call a status function passed into DBStartQuery or
|
|
* DBGetQueryResults with no extra parameters.
|
|
*
|
|
* INPUTS: statusProc: Pointer to status function passed in by application.
|
|
* If NULL, does not call it (obviously).
|
|
* message: Message for status function.
|
|
* rc: Result for status function.
|
|
*
|
|
* OUTPUTS: None.
|
|
*
|
|
* RETURNS: userCanceledErr if status function returns false, otherwise
|
|
* original rc passed in.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 04-23-90 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1990
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
OSErr
|
|
CallStatusProc(statusPtr statusProc, short message, OSErr rc)
|
|
{
|
|
if (statusProc != NULL)
|
|
{
|
|
if (!statusProc(message, rc, NULL, NULL, NULL, NULL, NULL))
|
|
{
|
|
/* status function cancelled */
|
|
rc = userCanceledErr;
|
|
}
|
|
}
|
|
|
|
/* return original rc or userCanceledErr */
|
|
return(rc);
|
|
|
|
} /* CallStatusProc() */
|
|
|
|
/*FORM_FEED*/
|
|
/*
|
|
*
|
|
* OBJECT: MyHLock
|
|
*
|
|
* DESCRIPTION: Smart handle locking. Saves current state of handle, then locks
|
|
* it. Just call HSetState to restore.
|
|
*
|
|
* Declared as a pascal function because compiler generates smaller code.
|
|
*
|
|
* INPUTS: h: Handle to be locked.
|
|
*
|
|
* OUTPUTS: state: State of handle before locking.
|
|
*
|
|
* RETURNS: Nothing.
|
|
*
|
|
* MODIFICATIONS:
|
|
* 03-24-89 JSM - Created.
|
|
*
|
|
* Copyright Apple Computer, Inc. 1989
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
pascal void
|
|
MyHLock(Handle h, char *state)
|
|
{
|
|
*state = HGetState(h);
|
|
HLock(h);
|
|
|
|
} /* MyHLock() */
|