/* * util.h * * Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org> * Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org> * Copyright (c) 2005 by Aurelien Foret <orelien@chez.com> * Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu> * Copyright (c) 2006 by David Kimpe <dnaku@frugalware.org> * Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef _ALPM_UTIL_H #define _ALPM_UTIL_H #include "config.h" #include "alpm_list.h" #include "package.h" /* pmpkg_t */ #include <stdio.h> #include <string.h> #include <stdarg.h> #include <stddef.h> /* size_t */ #include <time.h> #include <sys/stat.h> /* struct stat */ #include <archive.h> /* struct archive */ #include <math.h> /* fabs */ #include <float.h> /* DBL_EPSILON */ #ifdef ENABLE_NLS #include <libintl.h> /* here so it doesn't need to be included elsewhere */ /* define _() as shortcut for gettext() */ #define _(str) dgettext ("libalpm", str) #else #define _(s) s #endif #define ALLOC_FAIL(s) do { _alpm_log(PM_LOG_ERROR, _("alloc failure: could not allocate %zd bytes\n"), s); } while(0) #define MALLOC(p, s, action) do { p = calloc(1, s); if(p == NULL) { ALLOC_FAIL(s); action; } } while(0) #define CALLOC(p, l, s, action) do { p = calloc(l, s); if(p == NULL) { ALLOC_FAIL(s); action; } } while(0) /* This strdup macro is NULL safe- copying NULL will yield NULL */ #define STRDUP(r, s, action) do { if(s != NULL) { r = strdup(s); if(r == NULL) { ALLOC_FAIL(strlen(s)); action; } } else { r = NULL; } } while(0) #define STRNDUP(r, s, l, action) do { if(s != NULL) { r = strndup(s, l); if(r == NULL) { ALLOC_FAIL(strlen(s)); action; } } else { r = NULL; } } while(0) #define FREE(p) do { free(p); p = NULL; } while(0) #define ASSERT(cond, action) do { if(!(cond)) { action; } } while(0) #define RET_ERR(err, ret) do { pm_errno = (err); \ _alpm_log(PM_LOG_DEBUG, "returning error %d from %s : %s\n", err, __func__, alpm_strerrorlast()); \ return (ret); } while(0) #define DOUBLE_EQ(x, y) (fabs((x) - (y)) < DBL_EPSILON) /** * Used as a buffer/state holder for _alpm_archive_fgets(). */ struct archive_read_buffer { char *line; char *line_offset; size_t line_size; size_t max_line_size; char *block; char *block_offset; size_t block_size; int ret; }; int _alpm_makepath(const char *path); int _alpm_makepath_mode(const char *path, mode_t mode); int _alpm_copyfile(const char *src, const char *dest); char *_alpm_strtrim(char *str); int _alpm_unpack_single(const char *archive, const char *prefix, const char *fn); int _alpm_unpack(const char *archive, const char *prefix, alpm_list_t *list, int breakfirst); int _alpm_rmrf(const char *path); int _alpm_logaction(int usesyslog, FILE *f, const char *fmt, va_list args); int _alpm_run_chroot(const char *root, const char *path, char *const argv[]); int _alpm_ldconfig(const char *root); int _alpm_str_cmp(const void *s1, const void *s2); char *_alpm_filecache_find(const char *filename); const char *_alpm_filecache_setup(void); int _alpm_lstat(const char *path, struct stat *buf); int _alpm_test_md5sum(const char *filepath, const char *md5sum); int _alpm_archive_fgets(struct archive *a, struct archive_read_buffer *b); int _alpm_splitname(const char *target, pmpkg_t *pkg); unsigned long _alpm_hash_sdbm(const char *str); long _alpm_parsedate(const char *line); #ifndef HAVE_STRSEP char *strsep(char **, const char *); #endif #ifndef HAVE_STRNDUP char *strndup(const char *s, size_t n); #endif /* check exported library symbols with: nm -C -D <lib> */ #define SYMEXPORT __attribute__((visibility("default"))) #define SYMHIDDEN __attribute__((visibility("internal"))) #endif /* _ALPM_UTIL_H */ /* vim: set ts=2 sw=2 noet: */