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91 lines
1.8 KiB
C
91 lines
1.8 KiB
C
/*
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* $Id: expandpath.c,v 1.1 1997/10/30 04:57:25 gdr Exp $
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*/
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/* Change the arg types of GS/OS parameter blocks. Must be before #includes */
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#define __USE_DYNAMIC_GSSTRING__
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#include <types.h>
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#include <gsos.h>
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#include <errno.h>
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#include <orca.h>
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#include <gno/gno.h>
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#include "contrib.h"
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/*
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* expandpath
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*
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* Uses the GS/OS facilities to expand the pathname <path>. On
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* success, returns a pointer to the malloc'd expanded path. On
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* failure it will return NULL and set errno.
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*
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* Note that in using this function, all directory separators will
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* be converted to colons.
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*
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* *********** THIS ROUTINE IS NOT REENTRANT **************
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*/
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#define OUTBUF_QUANTUM 255
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GSStringPtr
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LC_ExpandPathGS (GSStringPtr path)
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{
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static ExpandPathRecGS expand;
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static ResultBufPtr outBuf = NULL;
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static int outBufSize = 0;
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int i;
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expand.pCount = 2;
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expand.inputPath = path;
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expand.flags = 0x0000;
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if (outBuf == NULL) {
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outBufSize += OUTBUF_QUANTUM;
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outBuf = GOinit(outBufSize, NULL);
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if (outBuf == NULL) {
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errno = ENOMEM;
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return NULL;
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}
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}
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for(;;) {
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expand.outputPath = outBuf;
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ExpandPathGS(&expand);
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switch (_toolErr) {
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case 0:
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/* NULL-terminate it and return */
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(outBuf->bufString.text)[outBuf->bufString.length]
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= '\0';
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return &(outBuf->bufString);
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break;
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case buffTooSmall:
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break;
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default:
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errno = _mapErr(_toolErr);
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return NULL;
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}
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/* if we got here, the buffer wasn't large enough */
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outBufSize += OUTBUF_QUANTUM;
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outBuf = GOchange(outBuf, outBufSize, NULL);
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}
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}
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char *
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LC_ExpandPath (char *path)
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{
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GSStringPtr inStr, result;
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int e;
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if ((inStr = __C2GSMALLOC(path)) == NULL) {
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return NULL;
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}
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result = LC_ExpandPathGS(inStr);
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e = errno;
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GIfree(inStr);
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errno = e;
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if (result) {
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return result->text;
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} else {
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return NULL;
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}
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}
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