Function FIO_openSrcFile

freebsd/contrib/zstd/programs/fileio.c:589–618

FIO_openSrcFile() : * condition : `srcFileName` must be non-NULL. * @result : FILE* to `srcFileName`, or NULL if it fails */

 *  condition : `srcFileName` must be non-NULL.
 * @result : FILE* to `srcFileName`, or NULL if it fails */
static FILE* FIO_openSrcFile(const char* srcFileName)
{
    stat_t statbuf;
    assert(srcFileName != NULL);
    if (!strcmp (srcFileName, stdinmark)) {
        DISPLAYLEVEL(4,"Using stdin for input \n");
        SET_BINARY_MODE(stdin);
        return stdin;
    }

    if (!UTIL_stat(srcFileName, &statbuf)) {
        DISPLAYLEVEL(1, "zstd: can't stat %s : %s -- ignored \n",
                        srcFileName, strerror(errno));
        return NULL;
    }

    if (!UTIL_isRegularFileStat(&statbuf)
     && !UTIL_isFIFOStat(&statbuf)
    ) {
        DISPLAYLEVEL(1, "zstd: %s is not a regular file -- ignored \n",
                        srcFileName);
        return NULL;
    }

    {   FILE* const f = fopen(srcFileName, "rb");
        if (f == NULL)
            DISPLAYLEVEL(1, "zstd: %s: %s \n", srcFileName, strerror(errno));
        return f;
    }
}

/** FIO_openDstFile() :
 *  condition : `dstFileName` must be non-NULL.