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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2014 by Michael Sevakis
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef _PATHFUNCS_H_
#define _PATHFUNCS_H_
#include <sys/types.h>
#define __need_size_t
#include <stddef.h>
#include <stdbool.h>
#include "config.h"
/* useful char constants that could be reconfigured if desired */
#define PATH_SEPCH '/'
#define PATH_SEPSTR "/"
#define PATH_ROOTSTR "/"
#define PATH_BADSEPCH '\\'
#define PATH_DRVSEPCH ':'
/* a nicer way to check for "." and ".." than two strcmp() calls */
static inline bool is_dotdir_name(const char *name)
{
return name[0] == '.' && (!name[1] || (name[1] == '.' && !name[2]));
}
static inline bool name_is_dot(const char *name)
{
return name[0] == '.' && !name[1];
}
static inline bool name_is_dot_dot(const char *name)
{
return name[0] == '.' && name[1] == '.' && !name[2];
}
/* return a pointer to the character following path separators */
#define GOBBLE_PATH_SEPCH(p) \
({ int _c; \
const char *_p = (p); \
while ((_c = *_p) == PATH_SEPCH) \
++_p; \
_p; })
/* return a pointer to the character following a path component which may
be a separator or the terminating nul */
#define GOBBLE_PATH_COMP(p) \
({ int _c; \
const char *_p = (p); \
while ((_c = *_p) && _c != PATH_SEPCH) \
++_p; \
_p; })
/* does the character terminate a path component? */
#define IS_COMP_TERMINATOR(c) \
({ int _c = (c); \
!_c || _c == PATH_SEPCH; })
#ifdef HAVE_MULTIVOLUME
int path_strip_volume(const char *name, const char **nameptr, bool greedy);
int get_volume_name(int volume, char *name);
#endif
int path_strip_drive(const char *name, const char **nameptr, bool greedy);
size_t path_trim_whitespace(const char *name, const char **nameptr);
size_t path_basename(const char *name, const char **nameptr);
size_t path_dirname(const char *name, const char **nameptr);
size_t path_strip_trailing_separators(const char *name, const char **nameptr);
void path_correct_separators(char *dstpath, const char *path);
/* constants useable in basepath and component */
#define PA_SEP_HARD NULL /* separate even if base is empty */
#define PA_SEP_SOFT "" /* separate only if base is nonempty */
size_t path_append(char *buffer, const char *basepath, const char *component,
size_t bufsize);
ssize_t parse_path_component(const char **pathp, const char **namep);
/* return true if path begins with a root '/' component and is not NULL */
static inline bool path_is_absolute(const char *path)
{
return path && path[0] == PATH_SEPCH;
}
#endif /* _PATHFUNCS_H_ */
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