Function FIO_checkFilenameCollisions

freebsd/contrib/zstd/programs/fileio.c:734–764

FIO_checkFilenameCollisions() : * Checks for and warns if there are any files that would have the same output path */

 * Checks for and warns if there are any files that would have the same output path
 */
int FIO_checkFilenameCollisions(const char** filenameTable, unsigned nbFiles) {
    const char **filenameTableSorted, *prevElem, *filename;
    unsigned u;

    filenameTableSorted = (const char**) malloc(sizeof(char*) * nbFiles);
    if (!filenameTableSorted) {
        DISPLAY("Unable to malloc new str array, not checking for name collisions\n");
        return 1;
    }

    for (u = 0; u < nbFiles; ++u) {
        filename = strrchr(filenameTable[u], PATH_SEP);
        if (filename == NULL) {
            filenameTableSorted[u] = filenameTable[u];
        } else {
            filenameTableSorted[u] = filename+1;
        }
    }

    qsort((void*)filenameTableSorted, nbFiles, sizeof(char*), UTIL_compareStr);
    prevElem = filenameTableSorted[0];
    for (u = 1; u < nbFiles; ++u) {
        if (strcmp(prevElem, filenameTableSorted[u]) == 0) {
            DISPLAY("WARNING: Two files have same filename: %s\n", prevElem);
        }
        prevElem = filenameTableSorted[u];
    }

    free((void*)filenameTableSorted);
    return 0;
}

static const char*
extractFilename(const char* path, char separator)