99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
/* ****************************************************************************
|
|
* fs/builtin/posix/topath.c -- POSIX path conversions.
|
|
* Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
|
|
*
|
|
* This file is part of libcasio.
|
|
* libcasio is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation; either version 3.0 of the License,
|
|
* or (at your option) any later version.
|
|
*
|
|
* libcasio 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 Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with libcasio; if not, see <http://www.gnu.org/licenses/>.
|
|
* ************************************************************************* */
|
|
#define PATH_FTW
|
|
#include "posix.h"
|
|
#ifndef LIBCASIO_DISABLED_POSIX_FS
|
|
|
|
/**
|
|
* casio_make_posix_path:
|
|
* Make a POSIX path from a platform-agnostic path.
|
|
*
|
|
* @arg cookie the filesystem cookie (unused).
|
|
* @arg ppath the path to make.
|
|
* @arg array the path array.
|
|
* @return the error code (0 if ok).
|
|
*/
|
|
|
|
int CASIO_EXPORT casio_make_posix_path(void *cookie,
|
|
void **ppath, casio_path_t *array)
|
|
{
|
|
size_t length; const casio_pathnode_t *node;
|
|
char *path;
|
|
|
|
(void)cookie;
|
|
/* Make up the length and validate. */
|
|
length = !(array->casio_path_flags & casio_pathflag_rel);
|
|
node = array->casio_path_nodes;
|
|
while (node) {
|
|
size_t nodesize = node->casio_pathnode_size;
|
|
|
|
/* Check that there is no forbidden characters. */
|
|
if (nodesize > 255
|
|
|| memchr(node->casio_pathnode_name, 0, nodesize)
|
|
|| memchr(node->casio_pathnode_name, '/', nodesize))
|
|
return (casio_error_invalid);
|
|
|
|
/* Iterate on the node, add to the length. */
|
|
length += nodesize;
|
|
node = node->casio_pathnode_next;
|
|
if (node) length++; /* '/' */
|
|
}
|
|
|
|
/* Allocate the path. */
|
|
*ppath = casio_alloc(length + 1, 1);
|
|
path = (char*)*ppath;
|
|
if (!path) return (casio_error_alloc);
|
|
|
|
/* Fill the path. */
|
|
if (~array->casio_path_flags & casio_pathflag_rel)
|
|
*path++ = '/';
|
|
node = array->casio_path_nodes;
|
|
while (node) {
|
|
size_t nodesize = node->casio_pathnode_size;
|
|
|
|
/* Copy the node data. */
|
|
memcpy(path, node->casio_pathnode_name, nodesize);
|
|
path += nodesize;
|
|
|
|
/* Iterate on the node, copy a slash if needed. */
|
|
node = node->casio_pathnode_next;
|
|
if (node) *path++ = '/';
|
|
}
|
|
*path = 0;
|
|
|
|
/* No error has occured! */
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* casio_free_posix_path:
|
|
* Free a POSIX path.
|
|
*
|
|
* @arg cookie the cookie.
|
|
* @arg nat the native path.
|
|
*/
|
|
|
|
void CASIO_EXPORT casio_free_posix_path(void *cookie, void *nat)
|
|
{
|
|
(void)cookie;
|
|
casio_free(nat);
|
|
}
|
|
|
|
#endif
|