ignorecase.c
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/** \file ignorecase.c */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "physfs.h"
#include "ignorecase.h"
/**
* Please see ignorecase.h for details.
*
* License: this code is public domain. I make no warranty that it is useful,
* correct, harmless, or environmentally safe.
*
* This particular file may be used however you like, including copying it
* verbatim into a closed-source project, exploiting it commercially, and
* removing any trace of my name from the source (although I hope you won't
* 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
* 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.txt in the root of the source tree.
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*
* \author Ryan C. Gordon.
*/
/* I'm not screwing around with stricmp vs. strcasecmp... */
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/* !!! FIXME: this will NOT work with UTF-8 strings in physfs2.0 */
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static int caseInsensitiveStringCompare(const char *x, const char *y)
{
int ux, uy;
do
{
ux = toupper((int) *x);
uy = toupper((int) *y);
if (ux != uy)
return((ux > uy) ? 1 : -1);
x++;
y++;
} while ((ux) && (uy));
return(0);
} /* caseInsensitiveStringCompare */
static int locateOneElement(char *buf)
{
char *ptr;
char **rc;
char **i;
if (PHYSFS_exists(buf))
return(1); /* quick rejection: exists in current case. */
ptr = strrchr(buf, '/'); /* find entry at end of path. */
if (ptr == NULL)
{
rc = PHYSFS_enumerateFiles("/");
ptr = buf;
} /* if */
else
{
*ptr = '\0';
rc = PHYSFS_enumerateFiles(buf);
*ptr = '/';
ptr++; /* point past dirsep to entry itself. */
} /* else */
for (i = rc; *i != NULL; i++)
{
if (caseInsensitiveStringCompare(*i, ptr) == 0)
{
strcpy(ptr, *i); /* found a match. Overwrite with this case. */
PHYSFS_freeList(rc);
return(1);
} /* if */
} /* for */
/* no match at all... */
PHYSFS_freeList(rc);
return(0);
} /* locateOneElement */
int PHYSFSEXT_locateCorrectCase(char *buf)
{
int rc;
char *ptr;
char *prevptr;
while (*buf == '/') /* skip any '/' at start of string... */
buf++;
ptr = prevptr = buf;
if (*ptr == '\0')
return(0); /* Uh...I guess that's success. */
while (ptr = strchr(ptr + 1, '/'))
{
*ptr = '\0'; /* block this path section off */
rc = locateOneElement(buf);
*ptr = '/'; /* restore path separator */
if (!rc)
return(-2); /* missing element in path. */
} /* while */
/* check final element... */
return(locateOneElement(buf) ? 0 : -1);
} /* PHYSFSEXT_locateCorrectCase */
#ifdef TEST_PHYSFSEXT_LOCATECORRECTCASE
int main(int argc, char **argv)
{
int rc;
char buf[128];
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PHYSFS_File *f;
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if (!PHYSFS_init(argv[0]))
{
fprintf(stderr, "PHYSFS_init(): %s\n", PHYSFS_getLastError());
return(1);
} /* if */
if (!PHYSFS_addToSearchPath(".", 1))
{
fprintf(stderr, "PHYSFS_addToSearchPath(): %s\n", PHYSFS_getLastError());
PHYSFS_deinit();
return(1);
} /* if */
if (!PHYSFS_setWriteDir("."))
{
fprintf(stderr, "PHYSFS_setWriteDir(): %s\n", PHYSFS_getLastError());
PHYSFS_deinit();
return(1);
} /* if */
if (!PHYSFS_mkdir("/a/b/c"))
{
fprintf(stderr, "PHYSFS_mkdir(): %s\n", PHYSFS_getLastError());
PHYSFS_deinit();
return(1);
} /* if */
if (!PHYSFS_mkdir("/a/b/C"))
{
fprintf(stderr, "PHYSFS_mkdir(): %s\n", PHYSFS_getLastError());
PHYSFS_deinit();
return(1);
} /* if */
f = PHYSFS_openWrite("/a/b/c/x.txt");
PHYSFS_close(f);
if (f == NULL)
{
fprintf(stderr, "PHYSFS_openWrite(): %s\n", PHYSFS_getLastError());
PHYSFS_deinit();
return(1);
} /* if */
f = PHYSFS_openWrite("/a/b/C/X.txt");
PHYSFS_close(f);
if (f == NULL)
{
fprintf(stderr, "PHYSFS_openWrite(): %s\n", PHYSFS_getLastError());
PHYSFS_deinit();
return(1);
} /* if */
strcpy(buf, "/a/b/c/x.txt");
rc = PHYSFSEXT_locateCorrectCase(buf);
if ((rc != 0) || (strcmp(buf, "/a/b/c/x.txt") != 0))
printf("test 1 failed\n");
strcpy(buf, "/a/B/c/x.txt");
rc = PHYSFSEXT_locateCorrectCase(buf);
if ((rc != 0) || (strcmp(buf, "/a/b/c/x.txt") != 0))
printf("test 2 failed\n");
strcpy(buf, "/a/b/C/x.txt");
rc = PHYSFSEXT_locateCorrectCase(buf);
if ((rc != 0) || (strcmp(buf, "/a/b/C/X.txt") != 0))
printf("test 3 failed\n");
strcpy(buf, "/a/b/c/X.txt");
rc = PHYSFSEXT_locateCorrectCase(buf);
if ((rc != 0) || (strcmp(buf, "/a/b/c/x.txt") != 0))
printf("test 4 failed\n");
strcpy(buf, "/a/b/c/z.txt");
rc = PHYSFSEXT_locateCorrectCase(buf);
if ((rc != -1) || (strcmp(buf, "/a/b/c/z.txt") != 0))
printf("test 5 failed\n");
strcpy(buf, "/A/B/Z/z.txt");
rc = PHYSFSEXT_locateCorrectCase(buf);
if ((rc != -2) || (strcmp(buf, "/a/b/Z/z.txt") != 0))
printf("test 6 failed\n");
printf("Testing completed.\n");
printf(" If no errors were reported, you're good to go.\n");
PHYSFS_delete("/a/b/c/x.txt");
PHYSFS_delete("/a/b/C/X.txt");
PHYSFS_delete("/a/b/c");
PHYSFS_delete("/a/b/C");
PHYSFS_delete("/a/b");
PHYSFS_delete("/a");
PHYSFS_deinit();
return(0);
} /* main */
#endif
/* end of ignorecase.c ... */