#define _XOPEN_SOURCE 500
#include <ftw.h>
#include "core.h"


int mkdir_p(const char *path, mode_t mode)
{
    /* Adapted from http://stackoverflow.com/a/2336245/119527 */
    const size_t len = strlen(path);
    char _path[PATH_MAX];
    char *p;

    errno = 0;

    /* Copy string so its mutable */
    if (len > sizeof(_path)-1) {
        errno = ENAMETOOLONG;
        return -1;
    }
    strcpy(_path, path);

    /* Iterate the string */
    for (p = _path + 1; *p; p++) {
        if (*p == '/') {
            /* Temporarily truncate */
            *p = '\0';

            if (mkdir(_path, mode) != 0) {
                if (errno != EEXIST)
                    return -1;
            }

            *p = '/';
        }
    }

    if (mkdir(_path, mode) != 0) {
        if (errno != EEXIST)
            return -1;
    }

    return 0;
}


int
unlink_cb(
        const char *fpath, const struct stat *sb, int typeflag,
        struct FTW *ftwbuf)
{
    TRACE ("Removing %s\n", fpath);
    int rv = remove(fpath);

    if (rv)
        perror(fpath);

    return rv;
}

int rm_r(const char *path)
{ return nftw(path, unlink_cb, 64, FTW_DEPTH | FTW_PHYS); }


/* Inline extern functions. */

int utf8_encode(const uint32_t utf, unsigned char *out);