kopia lustrzana https://github.com/micropython/micropython
65 wiersze
2.2 KiB
C
65 wiersze
2.2 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2013, 2014 Damien P. George
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
|
|
// Make sure a path only has forward slashes.
|
|
char *to_unix_path(char *p) {
|
|
if (p != NULL) {
|
|
char *pp = p;
|
|
while (*pp != 0) {
|
|
if (*pp == '\\')
|
|
*pp = '/';
|
|
++pp;
|
|
}
|
|
}
|
|
return p;
|
|
}
|
|
|
|
// Implement realpath() using _fullpath and make it use the same error codes as realpath() on unix.
|
|
// Also have it return a path with forward slashes only as some code relies on this,
|
|
// but _fullpath() returns backward slashes no matter what.
|
|
char *realpath(const char *path, char *resolved_path) {
|
|
char *ret = NULL;
|
|
if (path == NULL) {
|
|
errno = EINVAL;
|
|
} else if (access(path, R_OK) == 0) {
|
|
ret = resolved_path;
|
|
if (ret == NULL)
|
|
ret = malloc(_MAX_PATH);
|
|
if (ret == NULL) {
|
|
errno = ENOMEM;
|
|
} else {
|
|
ret = _fullpath(ret, path, _MAX_PATH);
|
|
if (ret == NULL)
|
|
errno = EIO;
|
|
}
|
|
}
|
|
return to_unix_path(ret);
|
|
}
|