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https://github.com/moparisthebest/pacman
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768451c5e3
* introduces new macro in util.h (DOUBLE_EQ) for properly comparing floating point values Signed-off-by: Dave Reisner <d@falconindy.com> Signed-off-by: Dan McGee <dan@archlinux.org>
119 lines
4.3 KiB
C
119 lines
4.3 KiB
C
/*
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* util.h
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*
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* Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
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* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
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* Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
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* Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu>
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* Copyright (c) 2006 by David Kimpe <dnaku@frugalware.org>
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* Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _ALPM_UTIL_H
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#define _ALPM_UTIL_H
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#include "config.h"
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#include "alpm_list.h"
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#include "package.h" /* pmpkg_t */
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stddef.h> /* size_t */
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#include <time.h>
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#include <sys/stat.h> /* struct stat */
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#include <archive.h> /* struct archive */
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#include <math.h> /* fabs */
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#include <float.h> /* DBL_EPSILON */
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#ifdef ENABLE_NLS
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#include <libintl.h> /* here so it doesn't need to be included elsewhere */
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/* define _() as shortcut for gettext() */
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#define _(str) dgettext ("libalpm", str)
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#else
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#define _(s) s
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#endif
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#define ALLOC_FAIL(s) do { _alpm_log(PM_LOG_ERROR, _("alloc failure: could not allocate %zd bytes\n"), s); } while(0)
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#define MALLOC(p, s, action) do { p = calloc(1, s); if(p == NULL) { ALLOC_FAIL(s); action; } } while(0)
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#define CALLOC(p, l, s, action) do { p = calloc(l, s); if(p == NULL) { ALLOC_FAIL(s); action; } } while(0)
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/* This strdup macro is NULL safe- copying NULL will yield NULL */
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#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)
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#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)
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#define FREE(p) do { free(p); p = NULL; } while(0)
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#define ASSERT(cond, action) do { if(!(cond)) { action; } } while(0)
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#define RET_ERR(err, ret) do { pm_errno = (err); \
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_alpm_log(PM_LOG_DEBUG, "returning error %d from %s : %s\n", err, __func__, alpm_strerrorlast()); \
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return (ret); } while(0)
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#define DOUBLE_EQ(x, y) (fabs((x) - (y)) < DBL_EPSILON)
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/**
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* Used as a buffer/state holder for _alpm_archive_fgets().
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*/
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struct archive_read_buffer {
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char *line;
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char *line_offset;
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size_t line_size;
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size_t max_line_size;
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char *block;
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char *block_offset;
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size_t block_size;
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int ret;
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};
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int _alpm_makepath(const char *path);
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int _alpm_makepath_mode(const char *path, mode_t mode);
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int _alpm_copyfile(const char *src, const char *dest);
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char *_alpm_strtrim(char *str);
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int _alpm_unpack_single(const char *archive, const char *prefix, const char *fn);
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int _alpm_unpack(const char *archive, const char *prefix, alpm_list_t *list, int breakfirst);
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int _alpm_rmrf(const char *path);
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int _alpm_logaction(int usesyslog, FILE *f, const char *fmt, va_list args);
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int _alpm_run_chroot(const char *root, const char *path, char *const argv[]);
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int _alpm_ldconfig(const char *root);
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int _alpm_str_cmp(const void *s1, const void *s2);
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char *_alpm_filecache_find(const char *filename);
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const char *_alpm_filecache_setup(void);
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int _alpm_lstat(const char *path, struct stat *buf);
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int _alpm_test_md5sum(const char *filepath, const char *md5sum);
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int _alpm_archive_fgets(struct archive *a, struct archive_read_buffer *b);
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int _alpm_splitname(const char *target, pmpkg_t *pkg);
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unsigned long _alpm_hash_sdbm(const char *str);
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long _alpm_parsedate(const char *line);
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#ifndef HAVE_STRSEP
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char *strsep(char **, const char *);
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#endif
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#ifndef HAVE_STRNDUP
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char *strndup(const char *s, size_t n);
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#endif
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/* check exported library symbols with: nm -C -D <lib> */
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#define SYMEXPORT __attribute__((visibility("default")))
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#define SYMHIDDEN __attribute__((visibility("internal")))
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#endif /* _ALPM_UTIL_H */
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/* vim: set ts=2 sw=2 noet: */
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