115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/** \file ignorecase.c */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <physfs.h>
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#include "ignorecase.h"
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/**
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* Please see ignorecase.h for details.
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*
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* License: this code is public domain. I make no warranty that it is useful,
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* correct, harmless, or environmentally safe.
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*
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* This particular file may be used however you like, including copying it
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* verbatim into a closed-source project, exploiting it commercially, and
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* removing any trace of my name from the source (although I hope you won't
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* do that). I welcome enhancements and corrections to this file, but I do
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* not require you to send me patches if you make changes. This code has
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* NO WARRANTY.
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*
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* Unless otherwise stated, the rest of PhysicsFS falls under the zlib license.
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* Please see LICENSE in the root of the source tree.
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*
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* \author Ryan C. Gordon.
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*/
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/* I'm not screwing around with stricmp vs. strcasecmp... */
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static int caseInsensitiveStringCompare(const char *x, const char *y)
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{
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int ux, uy;
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do
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{
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ux = toupper((int) *x);
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uy = toupper((int) *y);
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if (ux != uy)
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return((ux > uy) ? 1 : -1);
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x++;
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y++;
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} while ((ux) && (uy));
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return(0);
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} /* caseInsensitiveStringCompare */
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static int locateOneElement(char *buf)
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{
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char *ptr;
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char **rc;
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char **i;
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if (PHYSFS_exists(buf))
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return(1); /* quick rejection: exists in current case. */
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ptr = strrchr(buf, '/'); /* find entry at end of path. */
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if (ptr == NULL)
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{
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rc = PHYSFS_enumerateFiles("/");
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ptr = buf;
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} /* if */
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else
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{
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*ptr = '\0';
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rc = PHYSFS_enumerateFiles(buf);
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*ptr = '/';
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ptr++; /* point past dirsep to entry itself. */
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} /* else */
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for (i = rc; *i != NULL; i++)
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{
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if (caseInsensitiveStringCompare(*i, ptr) == 0)
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{
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strcpy(ptr, *i); /* found a match. Overwrite with this case. */
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PHYSFS_freeList(rc);
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return(1);
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} /* if */
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} /* for */
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/* no match at all... */
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PHYSFS_freeList(rc);
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return(0);
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} /* locateOneElement */
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int PHYSFSEXT_locateCorrectCase(char *buf)
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{
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int rc;
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char *ptr;
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char *prevptr;
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while (*buf == '/') /* skip any '/' at start of string... */
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buf++;
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ptr = prevptr = buf;
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if (*ptr == '\0')
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return(0); /* Uh...I guess that's success. */
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while ((ptr = strchr(ptr + 1, '/')))
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{
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*ptr = '\0'; /* block this path section off */
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rc = locateOneElement(buf);
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*ptr = '/'; /* restore path separator */
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if (!rc)
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return(-2); /* missing element in path. */
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} /* while */
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/* check final element... */
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return(locateOneElement(buf) ? 0 : -1);
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} /* PHYSFSEXT_locateCorrectCase */
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/* end of ignorecase.c ... */
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