kopia lustrzana https://github.com/micropython/micropython
43 wiersze
1.1 KiB
C
43 wiersze
1.1 KiB
C
#include <stdlib.h>
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#include <errno.h>
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#include <io.h>
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#ifndef R_OK
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#define R_OK 4
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#endif
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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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++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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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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return to_unix_path(ret);
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}
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