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view directory.c @ 178:2bfe43b85d7f
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author | David Demelier <markand@malikania.fr> |
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date | Sat, 21 Sep 2013 15:08:53 +0200 |
parents | 54976019a5a8 |
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/* * directory.c -- portable way to open directories * * Copyright (c) 2011, 2012 David Demelier <markand@malikania.fr> * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include "directory.h" #if defined(_WIN32) /* WINDOWS */ struct directory * directory_open(const char *path) { WIN32_FIND_DATA fdata; HANDLE h; struct directory *res; char respath[FILENAME_MAX + 1]; if (!(res = calloc(1, sizeof (struct directory)))) return NULL; snprintf(respath, sizeof (respath), "%s/*", path); if ((h = FindFirstFile(respath, &fdata)) == INVALID_HANDLE_VALUE) { free(res); return NULL; } do { res->ents = realloc(res->ents, sizeof (*res->ents) * (res->nents + 1)); /* Fail to reallocate */ if (!res->ents) { free(res); res = NULL; break; } res->ents[res->nents].name = strdup(fdata.cFileName); res->ents[res->nents].type = fdata.dwFileAttributes; res->ents[res->nents++].length = strlen(fdata.cFileName); } while (FindNextFile(h, &fdata) != 0); return res; } const char * directory_error(void) { static char msg[1024]; DWORD num; num = GetLastError(); FormatMessage( FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, num, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), msg, sizeof (msg), NULL ); return msg; } #else /* UNIX */ # include <errno.h> struct directory * directory_open(const char *path) { DIR *dp; struct dirent *ent; struct directory *res; if (!(res = calloc(1, sizeof (struct directory)))) return NULL; if (!(dp = opendir(path))) { free(res); return NULL; } while ((ent = readdir(dp))) { res->ents = realloc(res->ents, sizeof (*res->ents) * (res->nents + 1)); /* Fail to reallocate */ if (!res->ents) { free(res); res = NULL; break; } res->ents[res->nents].name = strdup(ent->d_name); res->ents[res->nents].type = ent->d_type; res->ents[res->nents++].length = ent->d_namlen; } (void)closedir(dp); return res; } const char * directory_error(void) { return strerror(errno); } #endif void directory_free(struct directory *dir) { int i; for (i = 0; i < dir->nents; ++i) free(dir->ents[i].name); free(dir->ents); free(dir); }