/*
* This file is part of the DXX-Rebirth project <https://www.dxx-rebirth.com/>.
* It is copyright by its individual contributors, as recorded in the
* project's Git history. See COPYING.txt at the top level for license
* terms and a link to the Git history.
*/
/** \file ignorecase.c */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "physfsx.h"
#include "physfs_list.h"
#include "ignorecase.h"
#include "compiler-range_for.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
* not require you to send me patches if you make changes. This code has
* NO WARRANTY.
*
* Unless otherwise stated, the rest of PhysicsFS falls under the zlib license.
* Please see LICENSE in the root of the source tree.
*
* \author Ryan C. Gordon.
*/
namespace dcx {
/* I'm not screwing around with stricmp vs. strcasecmp... */
static int caseInsensitiveStringCompare(const char *x, const char *y)
{
int ux, uy;
do
{
ux = toupper(static_cast<int>(*x));
uy = toupper(static_cast<int>(*y));
if (ux != uy)
return((ux > uy) ? 1 : -1);
x++;
y++;
} while ((ux) && (uy));
return(0);
} /* caseInsensitiveStringCompare */
namespace {
class search_result_t : public PHYSFSX_uncounted_list
{
typedef PHYSFSX_uncounted_list base_ptr;
public:
search_result_t(char *ptr, const char *buf) :
base_ptr(PHYSFS_enumerateFiles(ptr ? (*ptr = 0, buf) : "/"))
{
if (ptr)
*ptr = '/';
}
};
}
static int locateOneElement(char *const sptr, char *const ptr, const char *buf)
{
if (const auto r = PHYSFS_exists(buf))
return r; /* quick rejection: exists in current case. */
search_result_t rc{ptr, buf};
range_for (const auto i, rc)
{
if (caseInsensitiveStringCompare(i, sptr) == 0)
{
strcpy(sptr, i); /* found a match. Overwrite with this case. */
return(1);
} /* if */
} /* for */
/* no match at all... */
return(0);
} /* locateOneElement */
int PHYSFSEXT_locateCorrectCase(char *buf)
{
int rc;
while (*buf == '/') /* skip any '/' at start of string... */
buf++;
if (!*buf)
return(0); /* Uh...I guess that's success. */
char *prevptr = nullptr;
const auto a = [&]{
return locateOneElement(prevptr ? prevptr + 1 : buf, prevptr, buf);
};
for (auto ptr = buf; (ptr = strchr(ptr + 1, '/')); prevptr = ptr)
{
*ptr = '\0'; /* block this path section off */
rc = a();
*ptr = '/'; /* restore path separator */
if (!rc)
return(-2); /* missing element in path. */
} /* while */
/* check final element... */
return a() ? 0 : -1;
} /* PHYSFSEXT_locateCorrectCase */
}
#ifdef TEST_PHYSFSEXT_LOCATECORRECTCASE
#define con_printf(A,B,...) printf(B "\n", ##__VA_ARGS__)
int main(int argc, char **argv)
{
int rc;
char buf[128];
PHYSFS_File *f;
if (!PHYSFS_init(argv[0]))
{
con_printf(CON_CRITICAL, "PHYSFS_init(): %s", PHYSFS_getLastError());
return(1);
} /* if */
if (!PHYSFS_addToSearchPath(".", 1))
{
con_printf(CON_CRITICAL, "PHYSFS_addToSearchPath(): %s", PHYSFS_getLastError());
PHYSFS_deinit();
return(1);
} /* if */
if (!PHYSFS_setWriteDir("."))
{
con_printf(CON_CRITICAL, "PHYSFS_setWriteDir(): %s", PHYSFS_getLastError());
PHYSFS_deinit();
return(1);
} /* if */
if (!PHYSFS_mkdir("/a/b/c"))
{
con_printf(CON_CRITICAL, "PHYSFS_mkdir(): %s", PHYSFS_getLastError());
PHYSFS_deinit();
return(1);
} /* if */
if (!PHYSFS_mkdir("/a/b/C"))
{
con_printf(CON_CRITICAL, "PHYSFS_mkdir(): %s", PHYSFS_getLastError());
PHYSFS_deinit();
return(1);
} /* if */
f = PHYSFS_openWrite("/a/b/c/x.txt");
PHYSFS_close(f);
if (f == NULL)
{
con_printf(CON_CRITICAL, "PHYSFS_openWrite(): %s", PHYSFS_getLastError());
PHYSFS_deinit();
return(1);
} /* if */
f = PHYSFS_openWrite("/a/b/C/X.txt");
PHYSFS_close(f);
if (f == NULL)
{
con_printf(CON_CRITICAL, "PHYSFS_openWrite(): %s", 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))
con_printf(CON_DEBUG,"test 1 failed");
strcpy(buf, "/a/B/c/x.txt");
rc = PHYSFSEXT_locateCorrectCase(buf);
if ((rc != 0) || (strcmp(buf, "/a/b/c/x.txt") != 0))
con_printf(CON_DEBUG,"test 2 failed");
strcpy(buf, "/a/b/C/x.txt");
rc = PHYSFSEXT_locateCorrectCase(buf);
if ((rc != 0) || (strcmp(buf, "/a/b/C/X.txt") != 0))
con_printf(CON_DEBUG,"test 3 failed");
strcpy(buf, "/a/b/c/X.txt");
rc = PHYSFSEXT_locateCorrectCase(buf);
if ((rc != 0) || (strcmp(buf, "/a/b/c/x.txt") != 0))
con_printf(CON_DEBUG,"test 4 failed");
strcpy(buf, "/a/b/c/z.txt");
rc = PHYSFSEXT_locateCorrectCase(buf);
if ((rc != -1) || (strcmp(buf, "/a/b/c/z.txt") != 0))
con_printf(CON_DEBUG,"test 5 failed");
strcpy(buf, "/A/B/Z/z.txt");
rc = PHYSFSEXT_locateCorrectCase(buf);
if ((rc != -2) || (strcmp(buf, "/a/b/Z/z.txt") != 0))
con_printf(CON_DEBUG,"test 6 failed");
con_printf(CON_DEBUG,"Testing completed.");
con_printf(CON_DEBUG," If no errors were reported, you're good to go.");
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 ... */