760277e096
Slightly modified from original patch by Fabrice Bellard. Change-Id: I9ae04fa460f0f1b9c616e6f99505d4c5d4358f68
100 lines
3.6 KiB
C
100 lines
3.6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2014 by Michael Sevakis
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef _PATHFUNCS_H_
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#define _PATHFUNCS_H_
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#include <sys/types.h>
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#define __need_size_t
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#include <stddef.h>
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#include <stdbool.h>
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#include "config.h"
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/* useful char constants that could be reconfigured if desired */
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#define PATH_SEPCH '/'
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#define PATH_SEPSTR "/"
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#define PATH_ROOTSTR "/"
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#define PATH_BADSEPCH '\\'
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#define PATH_DRVSEPCH ':'
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/* a nicer way to check for "." and ".." than two strcmp() calls */
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static inline bool is_dotdir_name(const char *name)
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{
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return name[0] == '.' && (!name[1] || (name[1] == '.' && !name[2]));
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}
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static inline bool name_is_dot(const char *name)
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{
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return name[0] == '.' && !name[1];
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}
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static inline bool name_is_dot_dot(const char *name)
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{
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return name[0] == '.' && name[1] == '.' && !name[2];
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}
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/* return a pointer to the character following path separators */
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#define GOBBLE_PATH_SEPCH(p) \
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({ int _c; \
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const char *_p = (p); \
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while ((_c = *_p) == PATH_SEPCH) \
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++_p; \
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_p; })
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/* return a pointer to the character following a path component which may
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be a separator or the terminating nul */
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#define GOBBLE_PATH_COMP(p) \
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({ int _c; \
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const char *_p = (p); \
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while ((_c = *_p) && _c != PATH_SEPCH) \
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++_p; \
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_p; })
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/* does the character terminate a path component? */
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#define IS_COMP_TERMINATOR(c) \
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({ int _c = (c); \
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!_c || _c == PATH_SEPCH; })
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#ifdef HAVE_MULTIVOLUME
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int path_strip_volume(const char *name, const char **nameptr, bool greedy);
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int get_volume_name(int volume, char *name);
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#endif
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int path_strip_drive(const char *name, const char **nameptr, bool greedy);
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size_t path_basename(const char *name, const char **nameptr);
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size_t path_dirname(const char *name, const char **nameptr);
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size_t path_strip_trailing_separators(const char *name, const char **nameptr);
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void path_correct_separators(char *dstpath, const char *path);
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void path_remove_dot_segments(char *dstpath, const char *path);
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/* constants useable in basepath and component */
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#define PA_SEP_HARD NULL /* separate even if base is empty */
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#define PA_SEP_SOFT "" /* separate only if base is nonempty */
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size_t path_append(char *buffer, const char *basepath, const char *component,
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size_t bufsize);
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ssize_t parse_path_component(const char **pathp, const char **namep);
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/* return true if path begins with a root '/' component and is not NULL */
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static inline bool path_is_absolute(const char *path)
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{
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return path && path[0] == PATH_SEPCH;
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}
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#endif /* _PATHFUNCS_H_ */
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