🛠️🐜 Antkeeper superbuild with dependencies included
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239 lines
6.4 KiB
239 lines
6.4 KiB
/** \file globbing.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 <assert.h>
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#include "globbing.h"
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/**
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* Please see globbing.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 the file LICENSE.txt in the source's root directory.
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*
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* \author Ryan C. Gordon.
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*/
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static int matchesPattern(const char *fname, const char *wildcard,
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int caseSensitive)
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{
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char x, y;
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const char *fnameptr = fname;
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const char *wildptr = wildcard;
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while ((*wildptr) && (*fnameptr))
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{
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y = *wildptr;
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if (y == '*')
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{
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do
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{
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wildptr++; /* skip multiple '*' in a row... */
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} while (*wildptr == '*');
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y = (caseSensitive) ? *wildptr : (char) tolower(*wildptr);
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while (1)
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{
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x = (caseSensitive) ? *fnameptr : (char) tolower(*fnameptr);
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if ((!x) || (x == y))
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break;
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else
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fnameptr++;
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} /* while */
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} /* if */
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else if (y == '?')
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{
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wildptr++;
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fnameptr++;
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} /* else if */
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else
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{
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if (caseSensitive)
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x = *fnameptr;
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else
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{
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x = tolower(*fnameptr);
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y = tolower(y);
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} /* if */
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wildptr++;
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fnameptr++;
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if (x != y)
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return 0;
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} /* else */
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} /* while */
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while (*wildptr == '*')
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wildptr++;
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return (*fnameptr == *wildptr);
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} /* matchesPattern */
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typedef struct
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{
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const PHYSFS_Allocator *allocator;
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const char *wildcard;
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int caseSensitive;
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PHYSFS_EnumFilesCallback callback;
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void *origData;
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} WildcardCallbackData;
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/*
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* This callback sits between the enumerator and the enduser callback,
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* filtering out files that don't match the wildcard pattern.
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*/
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static void wildcardCallback(void *_d, const char *origdir, const char *fname)
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{
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const WildcardCallbackData *data = (const WildcardCallbackData *) _d;
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if (matchesPattern(fname, data->wildcard, data->caseSensitive))
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data->callback(data->origData, origdir, fname);
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} /* wildcardCallback */
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void PHYSFSEXT_enumerateFilesCallbackWildcard(const char *dir,
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const char *wildcard,
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int caseSensitive,
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PHYSFS_EnumFilesCallback c,
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void *d)
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{
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WildcardCallbackData data;
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data.allocator = PHYSFS_getAllocator();
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data.wildcard = wildcard;
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data.caseSensitive = caseSensitive;
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data.callback = c;
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data.origData = d;
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PHYSFS_enumerateFilesCallback(dir, wildcardCallback, &data);
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} /* PHYSFSEXT_enumerateFilesCallbackWildcard */
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void PHYSFSEXT_freeEnumeration(char **list)
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{
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const PHYSFS_Allocator *allocator = PHYSFS_getAllocator();
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int i;
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if (list != NULL)
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{
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for (i = 0; list[i] != NULL; i++)
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allocator->Free(list[i]);
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allocator->Free(list);
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} /* if */
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} /* PHYSFSEXT_freeEnumeration */
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char **PHYSFSEXT_enumerateFilesWildcard(const char *dir, const char *wildcard,
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int caseSensitive)
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{
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const PHYSFS_Allocator *allocator = PHYSFS_getAllocator();
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char **list = PHYSFS_enumerateFiles(dir);
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char **retval = NULL;
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int totalmatches = 0;
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int matches = 0;
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char **i;
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for (i = list; *i != NULL; i++)
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{
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#if 0
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printf("matchesPattern: '%s' vs '%s' (%s) ... %s\n", *i, wildcard,
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caseSensitive ? "case" : "nocase",
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matchesPattern(*i, wildcard, caseSensitive) ? "true" : "false");
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#endif
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if (matchesPattern(*i, wildcard, caseSensitive))
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totalmatches++;
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} /* for */
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retval = (char **) allocator->Malloc(sizeof (char *) * (totalmatches+1));
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if (retval != NULL)
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{
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for (i = list; ((matches < totalmatches) && (*i != NULL)); i++)
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{
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if (matchesPattern(*i, wildcard, caseSensitive))
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{
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retval[matches] = (char *) allocator->Malloc(strlen(*i) + 1);
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if (retval[matches] == NULL)
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{
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while (matches--)
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allocator->Free(retval[matches]);
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allocator->Free(retval);
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retval = NULL;
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break;
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} /* if */
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strcpy(retval[matches], *i);
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matches++;
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} /* if */
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} /* for */
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if (retval != NULL)
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{
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assert(totalmatches == matches);
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retval[matches] = NULL;
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} /* if */
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} /* if */
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PHYSFS_freeList(list);
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return retval;
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} /* PHYSFSEXT_enumerateFilesWildcard */
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#ifdef TEST_PHYSFSEXT_ENUMERATEFILESWILDCARD
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int main(int argc, char **argv)
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{
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int rc;
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char **flist;
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char **i;
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if (argc != 3)
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{
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printf("USAGE: %s <pattern> <caseSen>\n"
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" where <caseSen> is 1 or 0.\n", argv[0]);
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return 1;
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} /* if */
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if (!PHYSFS_init(argv[0]))
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{
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fprintf(stderr, "PHYSFS_init(): %s\n", PHYSFS_getLastError());
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return 1;
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} /* if */
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if (!PHYSFS_addToSearchPath(".", 1))
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{
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fprintf(stderr, "PHYSFS_addToSearchPath(): %s\n", PHYSFS_getLastError());
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PHYSFS_deinit();
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return 1;
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} /* if */
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flist = PHYSFSEXT_enumerateFilesWildcard("/", argv[1], atoi(argv[2]));
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rc = 0;
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for (i = flist; *i; i++)
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{
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printf("%s\n", *i);
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rc++;
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} /* for */
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printf("\n total %d files.\n\n", rc);
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PHYSFSEXT_freeEnumeration(flist);
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PHYSFS_deinit();
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return 0;
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} /* main */
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#endif
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/* end of globbing.c ... */
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