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Moved most of cc65/incpath to a common searchpath module

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git-svn-id: svn://svn.cc65.org/cc65/trunk@2174 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2003-05-28 21:11:47 +00:00
parent 9aa85743ba
commit fda9a3b49a
4 changed files with 278 additions and 0 deletions
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1
src/common/make/gcc.mak
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@ -23,6 +23,7 @@ OBJS = abend.o \
hashstr.o \
matchpat.o \
print.o \
searchpath.o \
segdefs.o \
segnames.o \
strbuf.o \

1
src/common/make/watcom.mak
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@ -55,6 +55,7 @@ OBJS = abend.obj \
hashstr.obj \
matchpat.obj \
print.obj \
searchpath.obj \
segdefs.obj \
segnames.obj \
strbuf.obj \

196
src/common/searchpath.c Normal file
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@ -0,0 +1,196 @@
/*****************************************************************************/
/* */
/* searchpath.h */
/* */
/* Search path path handling for ld65 */
/* */
/* */
/* */
/* (C) 2000-2003 Ullrich von Bassewitz */
/* Römerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(_MSC_VER)
/* Microsoft compiler */
# include <io.h>
#else
/* Anyone else */
# include <unistd.h>
#endif
/* common */
#include "searchpath.h"
#include "xmalloc.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
static char* SearchPaths[MAX_SEARCH_PATHS];
/*****************************************************************************/
/* Code */
/*****************************************************************************/
static char* Add (char* Orig, const char* New)
/* Create a new path from Orig and New, delete Orig, return the result */
{
unsigned OrigLen, NewLen;
char* NewPath;
/* Get the length of the original string */
OrigLen = Orig? strlen (Orig) : 0;
/* Get the length of the new path */
NewLen = strlen (New);
/* Check for a trailing path separator and remove it */
if (NewLen > 0 && (New [NewLen-1] == '\\' || New [NewLen-1] == '/')) {
--NewLen;
}
/* Allocate memory for the new string */
NewPath = (char*) xmalloc (OrigLen + NewLen + 2);
/* Copy the strings */
memcpy (NewPath, Orig, OrigLen);
memcpy (NewPath+OrigLen, New, NewLen);
NewPath [OrigLen+NewLen+0] = ';';
NewPath [OrigLen+NewLen+1] = '\0';
/* Delete the original path */
xfree (Orig);
/* Return the new path */
return NewPath;
}
static char* Find (const char* Path, const char* File)
/* Search for a file in a list of directories. If found, return the complete
* name including the path in a malloced data area, if not found, return 0.
*/
{
const char* P;
int Max;
char PathName [FILENAME_MAX];
/* Initialize variables */
Max = sizeof (PathName) - strlen (File) - 2;
if (Max < 0) {
return 0;
}
P = Path;
/* Handle a NULL pointer as replacement for an empty string */
if (P == 0) {
P = "";
}
/* Start the search */
while (*P) {
/* Copy the next path element into the buffer */
int Count = 0;
while (*P != '\0' && *P != ';' && Count < Max) {
PathName [Count++] = *P++;
}
/* Add a path separator and the filename */
if (Count) {
PathName [Count++] = '/';
}
strcpy (PathName + Count, File);
/* Check if this file exists */
if (access (PathName, 0) == 0) {
/* The file exists */
return xstrdup (PathName);
}
/* Skip a list separator if we have one */
if (*P == ';') {
++P;
}
}
/* Not found */
return 0;
}
void AddSearchPath (const char* NewPath, unsigned Where)
/* Add a new search path to the existing one */
{
/* Allow a NULL path */
if (NewPath) {
unsigned I;
for (I = 0; I < MAX_SEARCH_PATHS; ++I) {
unsigned Mask = (0x01U << I);
if (Where & Mask) {
SearchPaths[I] = Add (SearchPaths[I], NewPath);
}
++I;
}
}
}
char* SearchFile (const char* Name, unsigned Where)
/* Search for a file in a list of directories. Return a pointer to a malloced
* area that contains the complete path, if found, return 0 otherwise.
*/
{
unsigned I;
for (I = 0; I < MAX_SEARCH_PATHS; ++I) {
unsigned Mask = (0x01U << I);
if (Where & Mask) {
char* Path = Find (SearchPaths[I], Name);
if (Path) {
/* Found the file */
return Path;
}
}
++I;
}
return 0;
}

80
src/common/searchpath.h Normal file
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@ -0,0 +1,80 @@
/*****************************************************************************/
/* */
/* searchpath.h */
/* */
/* Search path path handling for ld65 */
/* */
/* */
/* */
/* (C) 2000-2003 Ullrich von Bassewitz */
/* Römerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
/* Exports facilities to search files in a list of directories. 8 of these
* lists are managed, and each list can contain an arbitrary number of
* directories. The "Where" argument is actually a bitset, specifying which
* of the search lists should be used when adding paths or searching files.
*/
#ifndef SEARCHPATH_H
#define SEARCHPATH_H
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/* Maximum number of search paths */
#define MAX_SEARCH_PATHS 8
/*****************************************************************************/
/* Code */
/*****************************************************************************/
void AddSearchPath (const char* NewPath, unsigned Where);
/* Add a new search path to the existing one */
char* SearchFile (const char* Name, unsigned Where);
/* Search for a file in a list of directories. Return a pointer to a malloced
* area that contains the complete path, if found, return 0 otherwise.
*/
/* End of searchpath.h */
#endif