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