43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
|
#include <stdlib.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <io.h>
|
||
|
|
|
||
|
|
#ifndef R_OK
|
||
|
|
#define R_OK 4
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// 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);
|
||
|
|
}
|