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af5c3afa91
the POSIX 2008 behaviour of realpath is not available everywhere so we provide a simple wrapper function. We use (and provide) the gnu extension canonicalize_file_name to make it cleaner to test for the feature we need; otherwise we have to rely on realpath segfaulting if the second argument is null.
85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/* notmuch - Not much of an email library, (just index and search)
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*
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* Copyright © 2009 Carl Worth
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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 3 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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* Author: Carl Worth <cworth@cworth.org>
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*/
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/* This header file defines functions that will only be conditionally
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* compiled for compatibility on systems that don't provide their own
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* implementations of the functions.
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*/
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#ifndef NOTMUCH_COMPAT_H
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#define NOTMUCH_COMPAT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if !STD_GETPWUID
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#define _POSIX_PTHREAD_SEMANTICS 1
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#endif
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#if !STD_ASCTIME
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#define _POSIX_PTHREAD_SEMANTICS 1
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#endif
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#if !HAVE_CANONICALIZE_FILE_NAME
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/* we only call this function from C, and this makes testing easier */
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#ifndef __cplusplus
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char *
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canonicalize_file_name (const char *path);
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#endif
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#endif
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#if !HAVE_GETLINE
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#include <stdio.h>
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#include <unistd.h>
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ssize_t
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getline (char **lineptr, size_t *n, FILE *stream);
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ssize_t
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getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp);
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#endif /* !HAVE_GETLINE */
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#if !HAVE_STRCASESTR
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char* strcasestr(const char *haystack, const char *needle);
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#endif /* !HAVE_STRCASESTR */
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#if !HAVE_STRSEP
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char *strsep(char **stringp, const char *delim);
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#endif /* !HAVE_STRSEP */
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#if !HAVE_TIMEGM
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#include <time.h>
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time_t timegm (struct tm *tm);
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#endif /* !HAVE_TIMEGM */
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/* Silence gcc warnings about unused results. These warnings exist
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* for a reason; any use of this needs to be justified. */
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#ifdef __GNUC__
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#define IGNORE_RESULT(x) ({ __typeof__(x) __z = (x); (void)(__z = __z); })
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#else /* !__GNUC__ */
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#define IGNORE_RESULT(x) x
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#endif /* __GNUC__ */
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#ifdef __cplusplus
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}
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#endif
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#endif /* NOTMUCH_COMPAT_H */
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