function zip_deflate_start()

in themes/docsy/static/js/deflate.js [183:231]

• 46 lines of code
• 10 McCabe index (conditional complexity)

    function zip_deflate_start(level) {
        var i;

        if (!level)
            level = zip_DEFAULT_LEVEL;
        else if (level < 1)
            level = 1;
        else if (level > 9)
            level = 9;

        zip_compr_level = level;
        zip_initflag = false;
        zip_eofile = false;
        if (zip_outbuf != null)
            return;

        zip_free_queue = zip_qhead = zip_qtail = null;
        zip_outbuf = new Array(zip_OUTBUFSIZ);
        zip_window = new Array(zip_window_size);
        zip_d_buf = new Array(zip_DIST_BUFSIZE);
        zip_l_buf = new Array(zip_INBUFSIZ + zip_INBUF_EXTRA);
        zip_prev = new Array(1 << zip_BITS);
        zip_dyn_ltree = new Array(zip_HEAP_SIZE);
        for (i = 0; i < zip_HEAP_SIZE; i++)
            zip_dyn_ltree[i] = new zip_DeflateCT();
        zip_dyn_dtree = new Array(2 * zip_D_CODES + 1);
        for (i = 0; i < 2 * zip_D_CODES + 1; i++)
            zip_dyn_dtree[i] = new zip_DeflateCT();
        zip_static_ltree = new Array(zip_L_CODES + 2);
        for (i = 0; i < zip_L_CODES + 2; i++)
            zip_static_ltree[i] = new zip_DeflateCT();
        zip_static_dtree = new Array(zip_D_CODES);
        for (i = 0; i < zip_D_CODES; i++)
            zip_static_dtree[i] = new zip_DeflateCT();
        zip_bl_tree = new Array(2 * zip_BL_CODES + 1);
        for (i = 0; i < 2 * zip_BL_CODES + 1; i++)
            zip_bl_tree[i] = new zip_DeflateCT();
        zip_l_desc = new zip_DeflateTreeDesc();
        zip_d_desc = new zip_DeflateTreeDesc();
        zip_bl_desc = new zip_DeflateTreeDesc();
        zip_bl_count = new Array(zip_MAX_BITS + 1);
        zip_heap = new Array(2 * zip_L_CODES + 1);
        zip_depth = new Array(2 * zip_L_CODES + 1);
        zip_length_code = new Array(zip_MAX_MATCH - zip_MIN_MATCH + 1);
        zip_dist_code = new Array(512);
        zip_base_length = new Array(zip_LENGTH_CODES);
        zip_base_dist = new Array(zip_D_CODES);
        zip_flag_buf = new Array(parseInt(zip_LIT_BUFSIZE / 8));
    }