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From dase...@apache.org
Subject [3/4] cordova-browser git commit: CB-9836 Add .gitattributes to prevent CRLF line endings in repos
Date Fri, 13 Nov 2015 09:32:23 GMT
http://git-wip-us.apache.org/repos/asf/cordova-browser/blob/d13bbf14/node_modules/adm-zip/methods/deflater.js
----------------------------------------------------------------------
diff --git a/node_modules/adm-zip/methods/deflater.js b/node_modules/adm-zip/methods/deflater.js
index 3267943..34ef297 100644
--- a/node_modules/adm-zip/methods/deflater.js
+++ b/node_modules/adm-zip/methods/deflater.js
@@ -1,1578 +1,1578 @@
-/*
- * $Id: rawdeflate.js,v 0.5 2013/04/09 14:25:38 dankogai Exp dankogai $
- *
- * GNU General Public License, version 2 (GPL-2.0)
- *   http://opensource.org/licenses/GPL-2.0
- * Original:
- *  http://www.onicos.com/staff/iz/amuse/javascript/expert/deflate.txt
- */
-function JSDeflater(/*inbuff*/inbuf) {
-
-    /* Copyright (C) 1999 Masanao Izumo <iz@onicos.co.jp>
-     * Version: 1.0.1
-     * LastModified: Dec 25 1999
-     */
-
-    var WSIZE = 32768,		// Sliding Window size
-        zip_STORED_BLOCK = 0,
-        zip_STATIC_TREES = 1,
-        zip_DYN_TREES = 2,
-        zip_DEFAULT_LEVEL = 6,
-        zip_FULL_SEARCH = true,
-        zip_INBUFSIZ = 32768,	// Input buffer size
-        zip_INBUF_EXTRA = 64,	// Extra buffer
-        zip_OUTBUFSIZ = 1024 * 8,
-        zip_window_size = 2 * WSIZE,
-        MIN_MATCH = 3,
-        MAX_MATCH = 258,
-        zip_BITS = 16,
-        LIT_BUFSIZE = 0x2000,
-        zip_HASH_BITS = 13,
-        zip_DIST_BUFSIZE = LIT_BUFSIZE,
-        zip_HASH_SIZE = 1 << zip_HASH_BITS,
-        zip_HASH_MASK = zip_HASH_SIZE - 1,
-        zip_WMASK = WSIZE - 1,
-        zip_NIL = 0, // Tail of hash chains
-        zip_TOO_FAR = 4096,
-        zip_MIN_LOOKAHEAD = MAX_MATCH + MIN_MATCH + 1,
-        zip_MAX_DIST = WSIZE - zip_MIN_LOOKAHEAD,
-        zip_SMALLEST = 1,
-        zip_MAX_BITS = 15,
-        zip_MAX_BL_BITS = 7,
-        zip_LENGTH_CODES = 29,
-        zip_LITERALS = 256,
-        zip_END_BLOCK = 256,
-        zip_L_CODES = zip_LITERALS + 1 + zip_LENGTH_CODES,
-        zip_D_CODES = 30,
-        zip_BL_CODES = 19,
-        zip_REP_3_6 = 16,
-        zip_REPZ_3_10 = 17,
-        zip_REPZ_11_138 = 18,
-        zip_HEAP_SIZE = 2 * zip_L_CODES + 1,
-        zip_H_SHIFT = parseInt((zip_HASH_BITS + MIN_MATCH - 1) / MIN_MATCH);
-
-    var zip_free_queue, zip_qhead, zip_qtail, zip_initflag, zip_outbuf = null, zip_outcnt, zip_outoff, zip_complete,
-        zip_window, zip_d_buf, zip_l_buf, zip_prev, zip_bi_buf, zip_bi_valid, zip_block_start, zip_ins_h, zip_hash_head,
-        zip_prev_match, zip_match_available, zip_match_length, zip_prev_length, zip_strstart, zip_match_start, zip_eofile,
-        zip_lookahead, zip_max_chain_length, zip_max_lazy_match, zip_compr_level, zip_good_match, zip_nice_match,
-        zip_dyn_ltree, zip_dyn_dtree, zip_static_ltree, zip_static_dtree, zip_bl_tree, zip_l_desc, zip_d_desc, zip_bl_desc,
-        zip_bl_count, zip_heap, zip_heap_len, zip_heap_max, zip_depth, zip_length_code, zip_dist_code, zip_base_length,
-        zip_base_dist, zip_flag_buf, zip_last_lit, zip_last_dist, zip_last_flags, zip_flags, zip_flag_bit, zip_opt_len,
-        zip_static_len, zip_deflate_data, zip_deflate_pos;
-
-    var zip_DeflateCT = function () {
-        this.fc = 0; // frequency count or bit string
-        this.dl = 0; // father node in Huffman tree or length of bit string
-    };
-
-    var zip_DeflateTreeDesc = function () {
-        this.dyn_tree = null;	// the dynamic tree
-        this.static_tree = null;	// corresponding static tree or NULL
-        this.extra_bits = null;	// extra bits for each code or NULL
-        this.extra_base = 0;	// base index for extra_bits
-        this.elems = 0;		// max number of elements in the tree
-        this.max_length = 0;	// max bit length for the codes
-        this.max_code = 0;		// largest code with non zero frequency
-    };
-
-    /* Values for max_lazy_match, good_match and max_chain_length, depending on
-     * the desired pack level (0..9). The values given below have been tuned to
-     * exclude worst case performance for pathological files. Better values may be
-     * found for specific files.
-     */
-    var zip_DeflateConfiguration = function (a, b, c, d) {
-        this.good_length = a; // reduce lazy search above this match length
-        this.max_lazy = b;    // do not perform lazy search above this match length
-        this.nice_length = c; // quit search above this match length
-        this.max_chain = d;
-    };
-
-    var zip_DeflateBuffer = function () {
-        this.next = null;
-        this.len = 0;
-        this.ptr = new Array(zip_OUTBUFSIZ);
-        this.off = 0;
-    };
-
-    /* constant tables */
-    var zip_extra_lbits = new Array(
-        0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0);
-    var zip_extra_dbits = new Array(
-        0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13);
-    var zip_extra_blbits = new Array(
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 7);
-    var zip_bl_order = new Array(
-        16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15);
-    var zip_configuration_table = new Array(
-        new zip_DeflateConfiguration(0, 0, 0, 0),
-        new zip_DeflateConfiguration(4, 4, 8, 4),
-        new zip_DeflateConfiguration(4, 5, 16, 8),
-        new zip_DeflateConfiguration(4, 6, 32, 32),
-        new zip_DeflateConfiguration(4, 4, 16, 16),
-        new zip_DeflateConfiguration(8, 16, 32, 32),
-        new zip_DeflateConfiguration(8, 16, 128, 128),
-        new zip_DeflateConfiguration(8, 32, 128, 256),
-        new zip_DeflateConfiguration(32, 128, 258, 1024),
-        new zip_DeflateConfiguration(32, 258, 258, 4096));
-
-
-    /* routines (deflate) */
-
-    var zip_deflate_start = function (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(MAX_MATCH - 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(LIT_BUFSIZE / 8));
-    };
-
-    var zip_deflate_end = function () {
-        zip_free_queue = zip_qhead = zip_qtail = null;
-        zip_outbuf = null;
-        zip_window = null;
-        zip_d_buf = null;
-        zip_l_buf = null;
-        zip_prev = null;
-        zip_dyn_ltree = null;
-        zip_dyn_dtree = null;
-        zip_static_ltree = null;
-        zip_static_dtree = null;
-        zip_bl_tree = null;
-        zip_l_desc = null;
-        zip_d_desc = null;
-        zip_bl_desc = null;
-        zip_bl_count = null;
-        zip_heap = null;
-        zip_depth = null;
-        zip_length_code = null;
-        zip_dist_code = null;
-        zip_base_length = null;
-        zip_base_dist = null;
-        zip_flag_buf = null;
-    };
-
-    var zip_reuse_queue = function (p) {
-        p.next = zip_free_queue;
-        zip_free_queue = p;
-    };
-
-    var zip_new_queue = function () {
-        var p;
-
-        if (zip_free_queue != null) {
-            p = zip_free_queue;
-            zip_free_queue = zip_free_queue.next;
-        }
-        else
-            p = new zip_DeflateBuffer();
-        p.next = null;
-        p.len = p.off = 0;
-
-        return p;
-    };
-
-    var zip_head1 = function (i) {
-        return zip_prev[WSIZE + i];
-    };
-
-    var zip_head2 = function (i, val) {
-        return zip_prev[WSIZE + i] = val;
-    };
-
-    /* put_byte is used for the compressed output, put_ubyte for the
-     * uncompressed output. However unlzw() uses window for its
-     * suffix table instead of its output buffer, so it does not use put_ubyte
-     * (to be cleaned up).
-     */
-    var zip_put_byte = function (c) {
-        zip_outbuf[zip_outoff + zip_outcnt++] = c;
-        if (zip_outoff + zip_outcnt == zip_OUTBUFSIZ)
-            zip_qoutbuf();
-    };
-
-    /* Output a 16 bit value, lsb first */
-    var zip_put_short = function (w) {
-        w &= 0xffff;
-        if (zip_outoff + zip_outcnt < zip_OUTBUFSIZ - 2) {
-            zip_outbuf[zip_outoff + zip_outcnt++] = (w & 0xff);
-            zip_outbuf[zip_outoff + zip_outcnt++] = (w >>> 8);
-        } else {
-            zip_put_byte(w & 0xff);
-            zip_put_byte(w >>> 8);
-        }
-    };
-
-    /* ==========================================================================
-     * Insert string s in the dictionary and set match_head to the previous head
-     * of the hash chain (the most recent string with same hash key). Return
-     * the previous length of the hash chain.
-     * IN  assertion: all calls to to INSERT_STRING are made with consecutive
-     *    input characters and the first MIN_MATCH bytes of s are valid
-     *    (except for the last MIN_MATCH-1 bytes of the input file).
-     */
-    var zip_INSERT_STRING = function () {
-        zip_ins_h = ((zip_ins_h << zip_H_SHIFT)
-            ^ (zip_window[zip_strstart + MIN_MATCH - 1] & 0xff))
-            & zip_HASH_MASK;
-        zip_hash_head = zip_head1(zip_ins_h);
-        zip_prev[zip_strstart & zip_WMASK] = zip_hash_head;
-        zip_head2(zip_ins_h, zip_strstart);
-    };
-
-    /* Send a code of the given tree. c and tree must not have side effects */
-    var zip_SEND_CODE = function (c, tree) {
-        zip_send_bits(tree[c].fc, tree[c].dl);
-    };
-
-    /* Mapping from a distance to a distance code. dist is the distance - 1 and
-     * must not have side effects. dist_code[256] and dist_code[257] are never
-     * used.
-     */
-    var zip_D_CODE = function (dist) {
-        return (dist < 256 ? zip_dist_code[dist]
-            : zip_dist_code[256 + (dist >> 7)]) & 0xff;
-    };
-
-    /* ==========================================================================
-     * Compares to subtrees, using the tree depth as tie breaker when
-     * the subtrees have equal frequency. This minimizes the worst case length.
-     */
-    var zip_SMALLER = function (tree, n, m) {
-        return tree[n].fc < tree[m].fc ||
-            (tree[n].fc == tree[m].fc && zip_depth[n] <= zip_depth[m]);
-    };
-
-    /* ==========================================================================
-     * read string data
-     */
-    var zip_read_buff = function (buff, offset, n) {
-        var i;
-        for (i = 0; i < n && zip_deflate_pos < zip_deflate_data.length; i++)
-            buff[offset + i] =
-                zip_deflate_data[zip_deflate_pos++] & 0xff;
-        return i;
-    };
-
-    /* ==========================================================================
-     * Initialize the "longest match" routines for a new file
-     */
-    var zip_lm_init = function () {
-        var j;
-
-        /* Initialize the hash table. */
-        for (j = 0; j < zip_HASH_SIZE; j++)
-            zip_prev[WSIZE + j] = 0;
-        zip_max_lazy_match = zip_configuration_table[zip_compr_level].max_lazy;
-        zip_good_match = zip_configuration_table[zip_compr_level].good_length;
-        if (!zip_FULL_SEARCH)
-            zip_nice_match = zip_configuration_table[zip_compr_level].nice_length;
-        zip_max_chain_length = zip_configuration_table[zip_compr_level].max_chain;
-
-        zip_strstart = 0;
-        zip_block_start = 0;
-
-        zip_lookahead = zip_read_buff(zip_window, 0, 2 * WSIZE);
-        if (zip_lookahead <= 0) {
-            zip_eofile = true;
-            zip_lookahead = 0;
-            return;
-        }
-        zip_eofile = false;
-        /* Make sure that we always have enough lookahead. This is important
-         * if input comes from a device such as a tty.
-         */
-        while (zip_lookahead < zip_MIN_LOOKAHEAD && !zip_eofile)
-            zip_fill_window();
-
-        /* If lookahead < MIN_MATCH, ins_h is garbage, but this is
-         * not important since only literal bytes will be emitted.
-         */
-        zip_ins_h = 0;
-        for (j = 0; j < MIN_MATCH - 1; j++) {
-            zip_ins_h = ((zip_ins_h << zip_H_SHIFT) ^ (zip_window[j] & 0xff)) & zip_HASH_MASK;
-        }
-    };
-
-    /* ==========================================================================
-     * Set match_start to the longest match starting at the given string and
-     * return its length. Matches shorter or equal to prev_length are discarded,
-     * in which case the result is equal to prev_length and match_start is
-     * garbage.
-     * IN assertions: cur_match is the head of the hash chain for the current
-     *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
-     */
-    var zip_longest_match = function (cur_match) {
-        var chain_length = zip_max_chain_length; // max hash chain length
-        var scanp = zip_strstart; // current string
-        var matchp;		// matched string
-        var len;		// length of current match
-        var best_len = zip_prev_length;	// best match length so far
-
-        /* Stop when cur_match becomes <= limit. To simplify the code,
-         * we prevent matches with the string of window index 0.
-         */
-        var limit = (zip_strstart > zip_MAX_DIST ? zip_strstart - zip_MAX_DIST : zip_NIL);
-
-        var strendp = zip_strstart + MAX_MATCH;
-        var scan_end1 = zip_window[scanp + best_len - 1];
-        var scan_end = zip_window[scanp + best_len];
-
-        /* Do not waste too much time if we already have a good match: */
-        if (zip_prev_length >= zip_good_match)
-            chain_length >>= 2;
-
-        do {
-            matchp = cur_match;
-
-            /* Skip to next match if the match length cannot increase
-             * or if the match length is less than 2:
-             */
-            if (zip_window[matchp + best_len] != scan_end ||
-                zip_window[matchp + best_len - 1] != scan_end1 ||
-                zip_window[matchp] != zip_window[scanp] ||
-                zip_window[++matchp] != zip_window[scanp + 1]) {
-                continue;
-            }
-
-            /* The check at best_len-1 can be removed because it will be made
-             * again later. (This heuristic is not always a win.)
-             * It is not necessary to compare scan[2] and match[2] since they
-             * are always equal when the other bytes match, given that
-             * the hash keys are equal and that HASH_BITS >= 8.
-             */
-            scanp += 2;
-            matchp++;
-
-            /* We check for insufficient lookahead only every 8th comparison;
-             * the 256th check will be made at strstart+258.
-             */
-            do {
-            } while (zip_window[++scanp] == zip_window[++matchp] &&
-                zip_window[++scanp] == zip_window[++matchp] &&
-                zip_window[++scanp] == zip_window[++matchp] &&
-                zip_window[++scanp] == zip_window[++matchp] &&
-                zip_window[++scanp] == zip_window[++matchp] &&
-                zip_window[++scanp] == zip_window[++matchp] &&
-                zip_window[++scanp] == zip_window[++matchp] &&
-                zip_window[++scanp] == zip_window[++matchp] &&
-                scanp < strendp);
-
-            len = MAX_MATCH - (strendp - scanp);
-            scanp = strendp - MAX_MATCH;
-
-            if (len > best_len) {
-                zip_match_start = cur_match;
-                best_len = len;
-                if (zip_FULL_SEARCH) {
-                    if (len >= MAX_MATCH) break;
-                } else {
-                    if (len >= zip_nice_match) break;
-                }
-
-                scan_end1 = zip_window[scanp + best_len - 1];
-                scan_end = zip_window[scanp + best_len];
-            }
-        } while ((cur_match = zip_prev[cur_match & zip_WMASK]) > limit
-            && --chain_length != 0);
-
-        return best_len;
-    };
-
-    /* ==========================================================================
-     * Fill the window when the lookahead becomes insufficient.
-     * Updates strstart and lookahead, and sets eofile if end of input file.
-     * IN assertion: lookahead < MIN_LOOKAHEAD && strstart + lookahead > 0
-     * OUT assertions: at least one byte has been read, or eofile is set;
-     *    file reads are performed for at least two bytes (required for the
-     *    translate_eol option).
-     */
-    var zip_fill_window = function () {
-        var n, m;
-
-        // Amount of free space at the end of the window.
-        var more = zip_window_size - zip_lookahead - zip_strstart;
-
-        /* If the window is almost full and there is insufficient lookahead,
-         * move the upper half to the lower one to make room in the upper half.
-         */
-        if (more == -1) {
-            /* Very unlikely, but possible on 16 bit machine if strstart == 0
-             * and lookahead == 1 (input done one byte at time)
-             */
-            more--;
-        } else if (zip_strstart >= WSIZE + zip_MAX_DIST) {
-            /* By the IN assertion, the window is not empty so we can't confuse
-             * more == 0 with more == 64K on a 16 bit machine.
-             */
-            for (n = 0; n < WSIZE; n++)
-                zip_window[n] = zip_window[n + WSIZE];
-
-            zip_match_start -= WSIZE;
-            zip_strstart -= WSIZE;
-            /* we now have strstart >= MAX_DIST: */
-            zip_block_start -= WSIZE;
-
-            for (n = 0; n < zip_HASH_SIZE; n++) {
-                m = zip_head1(n);
-                zip_head2(n, m >= WSIZE ? m - WSIZE : zip_NIL);
-            }
-            for (n = 0; n < WSIZE; n++) {
-                /* If n is not on any hash chain, prev[n] is garbage but
-                 * its value will never be used.
-                 */
-                m = zip_prev[n];
-                zip_prev[n] = (m >= WSIZE ? m - WSIZE : zip_NIL);
-            }
-            more += WSIZE;
-        }
-        // At this point, more >= 2
-        if (!zip_eofile) {
-            n = zip_read_buff(zip_window, zip_strstart + zip_lookahead, more);
-            if (n <= 0)
-                zip_eofile = true;
-            else
-                zip_lookahead += n;
-        }
-    };
-
-    /* ==========================================================================
-     * Processes a new input file and return its compressed length. This
-     * function does not perform lazy evaluationof matches and inserts
-     * new strings in the dictionary only for unmatched strings or for short
-     * matches. It is used only for the fast compression options.
-     */
-    var zip_deflate_fast = function () {
-        while (zip_lookahead != 0 && zip_qhead == null) {
-            var flush; // set if current block must be flushed
-
-            /* Insert the string window[strstart .. strstart+2] in the
-             * dictionary, and set hash_head to the head of the hash chain:
-             */
-            zip_INSERT_STRING();
-
-            /* Find the longest match, discarding those <= prev_length.
-             * At this point we have always match_length < MIN_MATCH
-             */
-            if (zip_hash_head != zip_NIL &&
-                zip_strstart - zip_hash_head <= zip_MAX_DIST) {
-                /* To simplify the code, we prevent matches with the string
-                 * of window index 0 (in particular we have to avoid a match
-                 * of the string with itself at the start of the input file).
-                 */
-                zip_match_length = zip_longest_match(zip_hash_head);
-                /* longest_match() sets match_start */
-                if (zip_match_length > zip_lookahead)
-                    zip_match_length = zip_lookahead;
-            }
-            if (zip_match_length >= MIN_MATCH) {
-                flush = zip_ct_tally(zip_strstart - zip_match_start,
-                    zip_match_length - MIN_MATCH);
-                zip_lookahead -= zip_match_length;
-
-                /* Insert new strings in the hash table only if the match length
-                 * is not too large. This saves time but degrades compression.
-                 */
-                if (zip_match_length <= zip_max_lazy_match) {
-                    zip_match_length--; // string at strstart already in hash table
-                    do {
-                        zip_strstart++;
-                        zip_INSERT_STRING();
-                        /* strstart never exceeds WSIZE-MAX_MATCH, so there are
-                         * always MIN_MATCH bytes ahead. If lookahead < MIN_MATCH
-                         * these bytes are garbage, but it does not matter since
-                         * the next lookahead bytes will be emitted as literals.
-                         */
-                    } while (--zip_match_length != 0);
-                    zip_strstart++;
-                } else {
-                    zip_strstart += zip_match_length;
-                    zip_match_length = 0;
-                    zip_ins_h = zip_window[zip_strstart] & 0xff;
-                    zip_ins_h = ((zip_ins_h << zip_H_SHIFT) ^ (zip_window[zip_strstart + 1] & 0xff)) & zip_HASH_MASK;
-                }
-            } else {
-                /* No match, output a literal byte */
-                flush = zip_ct_tally(0, zip_window[zip_strstart] & 0xff);
-                zip_lookahead--;
-                zip_strstart++;
-            }
-            if (flush) {
-                zip_flush_block(0);
-                zip_block_start = zip_strstart;
-            }
-
-            /* Make sure that we always have enough lookahead, except
-             * at the end of the input file. We need MAX_MATCH bytes
-             * for the next match, plus MIN_MATCH bytes to insert the
-             * string following the next match.
-             */
-            while (zip_lookahead < zip_MIN_LOOKAHEAD && !zip_eofile)
-                zip_fill_window();
-        }
-    };
-
-    var zip_deflate_better = function () {
-        /* Process the input block. */
-        while (zip_lookahead != 0 && zip_qhead == null) {
-            /* Insert the string window[strstart .. strstart+2] in the
-             * dictionary, and set hash_head to the head of the hash chain:
-             */
-            zip_INSERT_STRING();
-
-            /* Find the longest match, discarding those <= prev_length.
-             */
-            zip_prev_length = zip_match_length;
-            zip_prev_match = zip_match_start;
-            zip_match_length = MIN_MATCH - 1;
-
-            if (zip_hash_head != zip_NIL &&
-                zip_prev_length < zip_max_lazy_match &&
-                zip_strstart - zip_hash_head <= zip_MAX_DIST) {
-                /* To simplify the code, we prevent matches with the string
-                 * of window index 0 (in particular we have to avoid a match
-                 * of the string with itself at the start of the input file).
-                 */
-                zip_match_length = zip_longest_match(zip_hash_head);
-                /* longest_match() sets match_start */
-                if (zip_match_length > zip_lookahead)
-                    zip_match_length = zip_lookahead;
-
-                /* Ignore a length 3 match if it is too distant: */
-                if (zip_match_length == MIN_MATCH &&
-                    zip_strstart - zip_match_start > zip_TOO_FAR) {
-                    /* If prev_match is also MIN_MATCH, match_start is garbage
-                     * but we will ignore the current match anyway.
-                     */
-                    zip_match_length--;
-                }
-            }
-            /* If there was a match at the previous step and the current
-             * match is not better, output the previous match:
-             */
-            if (zip_prev_length >= MIN_MATCH &&
-                zip_match_length <= zip_prev_length) {
-                var flush; // set if current block must be flushed
-                flush = zip_ct_tally(zip_strstart - 1 - zip_prev_match,
-                    zip_prev_length - MIN_MATCH);
-
-                /* Insert in hash table all strings up to the end of the match.
-                 * strstart-1 and strstart are already inserted.
-                 */
-                zip_lookahead -= zip_prev_length - 1;
-                zip_prev_length -= 2;
-                do {
-                    zip_strstart++;
-                    zip_INSERT_STRING();
-                    /* strstart never exceeds WSIZE-MAX_MATCH, so there are
-                     * always MIN_MATCH bytes ahead. If lookahead < MIN_MATCH
-                     * these bytes are garbage, but it does not matter since the
-                     * next lookahead bytes will always be emitted as literals.
-                     */
-                } while (--zip_prev_length != 0);
-                zip_match_available = 0;
-                zip_match_length = MIN_MATCH - 1;
-                zip_strstart++;
-                if (flush) {
-                    zip_flush_block(0);
-                    zip_block_start = zip_strstart;
-                }
-            } else if (zip_match_available != 0) {
-                /* If there was no match at the previous position, output a
-                 * single literal. If there was a match but the current match
-                 * is longer, truncate the previous match to a single literal.
-                 */
-                if (zip_ct_tally(0, zip_window[zip_strstart - 1] & 0xff)) {
-                    zip_flush_block(0);
-                    zip_block_start = zip_strstart;
-                }
-                zip_strstart++;
-                zip_lookahead--;
-            } else {
-                /* There is no previous match to compare with, wait for
-                 * the next step to decide.
-                 */
-                zip_match_available = 1;
-                zip_strstart++;
-                zip_lookahead--;
-            }
-
-            /* Make sure that we always have enough lookahead, except
-             * at the end of the input file. We need MAX_MATCH bytes
-             * for the next match, plus MIN_MATCH bytes to insert the
-             * string following the next match.
-             */
-            while (zip_lookahead < zip_MIN_LOOKAHEAD && !zip_eofile)
-                zip_fill_window();
-        }
-    };
-
-    var zip_init_deflate = function () {
-        if (zip_eofile)
-            return;
-        zip_bi_buf = 0;
-        zip_bi_valid = 0;
-        zip_ct_init();
-        zip_lm_init();
-
-        zip_qhead = null;
-        zip_outcnt = 0;
-        zip_outoff = 0;
-        zip_match_available = 0;
-
-        if (zip_compr_level <= 3) {
-            zip_prev_length = MIN_MATCH - 1;
-            zip_match_length = 0;
-        }
-        else {
-            zip_match_length = MIN_MATCH - 1;
-            zip_match_available = 0;
-            zip_match_available = 0;
-        }
-
-        zip_complete = false;
-    };
-
-    /* ==========================================================================
-     * Same as above, but achieves better compression. We use a lazy
-     * evaluation for matches: a match is finally adopted only if there is
-     * no better match at the next window position.
-     */
-    var zip_deflate_internal = function (buff, off, buff_size) {
-        var n;
-
-        if (!zip_initflag) {
-            zip_init_deflate();
-            zip_initflag = true;
-            if (zip_lookahead == 0) { // empty
-                zip_complete = true;
-                return 0;
-            }
-        }
-
-        if ((n = zip_qcopy(buff, off, buff_size)) == buff_size)
-            return buff_size;
-
-        if (zip_complete)
-            return n;
-
-        if (zip_compr_level <= 3) // optimized for speed
-            zip_deflate_fast();
-        else
-            zip_deflate_better();
-        if (zip_lookahead == 0) {
-            if (zip_match_available != 0)
-                zip_ct_tally(0, zip_window[zip_strstart - 1] & 0xff);
-            zip_flush_block(1);
-            zip_complete = true;
-        }
-        return n + zip_qcopy(buff, n + off, buff_size - n);
-    };
-
-    var zip_qcopy = function (buff, off, buff_size) {
-        var n, i, j;
-
-        n = 0;
-        while (zip_qhead != null && n < buff_size) {
-            i = buff_size - n;
-            if (i > zip_qhead.len)
-                i = zip_qhead.len;
-            for (j = 0; j < i; j++)
-                buff[off + n + j] = zip_qhead.ptr[zip_qhead.off + j];
-
-            zip_qhead.off += i;
-            zip_qhead.len -= i;
-            n += i;
-            if (zip_qhead.len == 0) {
-                var p;
-                p = zip_qhead;
-                zip_qhead = zip_qhead.next;
-                zip_reuse_queue(p);
-            }
-        }
-
-        if (n == buff_size)
-            return n;
-
-        if (zip_outoff < zip_outcnt) {
-            i = buff_size - n;
-            if (i > zip_outcnt - zip_outoff)
-                i = zip_outcnt - zip_outoff;
-            // System.arraycopy(outbuf, outoff, buff, off + n, i);
-            for (j = 0; j < i; j++)
-                buff[off + n + j] = zip_outbuf[zip_outoff + j];
-            zip_outoff += i;
-            n += i;
-            if (zip_outcnt == zip_outoff)
-                zip_outcnt = zip_outoff = 0;
-        }
-        return n;
-    };
-
-    /* ==========================================================================
-     * Allocate the match buffer, initialize the various tables and save the
-     * location of the internal file attribute (ascii/binary) and method
-     * (DEFLATE/STORE).
-     */
-    var zip_ct_init = function () {
-        var n;	// iterates over tree elements
-        var bits;	// bit counter
-        var length;	// length value
-        var code;	// code value
-        var dist;	// distance index
-
-        if (zip_static_dtree[0].dl != 0) return; // ct_init already called
-
-        zip_l_desc.dyn_tree = zip_dyn_ltree;
-        zip_l_desc.static_tree = zip_static_ltree;
-        zip_l_desc.extra_bits = zip_extra_lbits;
-        zip_l_desc.extra_base = zip_LITERALS + 1;
-        zip_l_desc.elems = zip_L_CODES;
-        zip_l_desc.max_length = zip_MAX_BITS;
-        zip_l_desc.max_code = 0;
-
-        zip_d_desc.dyn_tree = zip_dyn_dtree;
-        zip_d_desc.static_tree = zip_static_dtree;
-        zip_d_desc.extra_bits = zip_extra_dbits;
-        zip_d_desc.extra_base = 0;
-        zip_d_desc.elems = zip_D_CODES;
-        zip_d_desc.max_length = zip_MAX_BITS;
-        zip_d_desc.max_code = 0;
-
-        zip_bl_desc.dyn_tree = zip_bl_tree;
-        zip_bl_desc.static_tree = null;
-        zip_bl_desc.extra_bits = zip_extra_blbits;
-        zip_bl_desc.extra_base = 0;
-        zip_bl_desc.elems = zip_BL_CODES;
-        zip_bl_desc.max_length = zip_MAX_BL_BITS;
-        zip_bl_desc.max_code = 0;
-
-        // Initialize the mapping length (0..255) -> length code (0..28)
-        length = 0;
-        for (code = 0; code < zip_LENGTH_CODES - 1; code++) {
-            zip_base_length[code] = length;
-            for (n = 0; n < (1 << zip_extra_lbits[code]); n++)
-                zip_length_code[length++] = code;
-        }
-        /* Note that the length 255 (match length 258) can be represented
-         * in two different ways: code 284 + 5 bits or code 285, so we
-         * overwrite length_code[255] to use the best encoding:
-         */
-        zip_length_code[length - 1] = code;
-
-        /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
-        dist = 0;
-        for (code = 0; code < 16; code++) {
-            zip_base_dist[code] = dist;
-            for (n = 0; n < (1 << zip_extra_dbits[code]); n++) {
-                zip_dist_code[dist++] = code;
-            }
-        }
-        dist >>= 7; // from now on, all distances are divided by 128
-        for (; code < zip_D_CODES; code++) {
-            zip_base_dist[code] = dist << 7;
-            for (n = 0; n < (1 << (zip_extra_dbits[code] - 7)); n++)
-                zip_dist_code[256 + dist++] = code;
-        }
-        // Construct the codes of the static literal tree
-        for (bits = 0; bits <= zip_MAX_BITS; bits++)
-            zip_bl_count[bits] = 0;
-        n = 0;
-        while (n <= 143) {
-            zip_static_ltree[n++].dl = 8;
-            zip_bl_count[8]++;
-        }
-        while (n <= 255) {
-            zip_static_ltree[n++].dl = 9;
-            zip_bl_count[9]++;
-        }
-        while (n <= 279) {
-            zip_static_ltree[n++].dl = 7;
-            zip_bl_count[7]++;
-        }
-        while (n <= 287) {
-            zip_static_ltree[n++].dl = 8;
-            zip_bl_count[8]++;
-        }
-        /* Codes 286 and 287 do not exist, but we must include them in the
-         * tree construction to get a canonical Huffman tree (longest code
-         * all ones)
-         */
-        zip_gen_codes(zip_static_ltree, zip_L_CODES + 1);
-
-        /* The static distance tree is trivial: */
-        for (n = 0; n < zip_D_CODES; n++) {
-            zip_static_dtree[n].dl = 5;
-            zip_static_dtree[n].fc = zip_bi_reverse(n, 5);
-        }
-
-        // Initialize the first block of the first file:
-        zip_init_block();
-    };
-
-    /* ==========================================================================
-     * Initialize a new block.
-     */
-    var zip_init_block = function () {
-        var n; // iterates over tree elements
-
-        // Initialize the trees.
-        for (n = 0; n < zip_L_CODES; n++) zip_dyn_ltree[n].fc = 0;
-        for (n = 0; n < zip_D_CODES; n++) zip_dyn_dtree[n].fc = 0;
-        for (n = 0; n < zip_BL_CODES; n++) zip_bl_tree[n].fc = 0;
-
-        zip_dyn_ltree[zip_END_BLOCK].fc = 1;
-        zip_opt_len = zip_static_len = 0;
-        zip_last_lit = zip_last_dist = zip_last_flags = 0;
-        zip_flags = 0;
-        zip_flag_bit = 1;
-    };
-
-    /* ==========================================================================
-     * Restore the heap property by moving down the tree starting at node k,
-     * exchanging a node with the smallest of its two sons if necessary, stopping
-     * when the heap property is re-established (each father smaller than its
-     * two sons).
-     */
-    var zip_pqdownheap = function (tree,	// the tree to restore
-                                   k) {	// node to move down
-        var v = zip_heap[k];
-        var j = k << 1;	// left son of k
-
-        while (j <= zip_heap_len) {
-            // Set j to the smallest of the two sons:
-            if (j < zip_heap_len &&
-                zip_SMALLER(tree, zip_heap[j + 1], zip_heap[j]))
-                j++;
-
-            // Exit if v is smaller than both sons
-            if (zip_SMALLER(tree, v, zip_heap[j]))
-                break;
-
-            // Exchange v with the smallest son
-            zip_heap[k] = zip_heap[j];
-            k = j;
-
-            // And continue down the tree, setting j to the left son of k
-            j <<= 1;
-        }
-        zip_heap[k] = v;
-    };
-
-    /* ==========================================================================
-     * Compute the optimal bit lengths for a tree and update the total bit length
-     * for the current block.
-     * IN assertion: the fields freq and dad are set, heap[heap_max] and
-     *    above are the tree nodes sorted by increasing frequency.
-     * OUT assertions: the field len is set to the optimal bit length, the
-     *     array bl_count contains the frequencies for each bit length.
-     *     The length opt_len is updated; static_len is also updated if stree is
-     *     not null.
-     */
-    var zip_gen_bitlen = function (desc) { // the tree descriptor
-        var tree = desc.dyn_tree;
-        var extra = desc.extra_bits;
-        var base = desc.extra_base;
-        var max_code = desc.max_code;
-        var max_length = desc.max_length;
-        var stree = desc.static_tree;
-        var h;		// heap index
-        var n, m;		// iterate over the tree elements
-        var bits;		// bit length
-        var xbits;		// extra bits
-        var f;		// frequency
-        var overflow = 0;	// number of elements with bit length too large
-
-        for (bits = 0; bits <= zip_MAX_BITS; bits++)
-            zip_bl_count[bits] = 0;
-
-        /* In a first pass, compute the optimal bit lengths (which may
-         * overflow in the case of the bit length tree).
-         */
-        tree[zip_heap[zip_heap_max]].dl = 0; // root of the heap
-
-        for (h = zip_heap_max + 1; h < zip_HEAP_SIZE; h++) {
-            n = zip_heap[h];
-            bits = tree[tree[n].dl].dl + 1;
-            if (bits > max_length) {
-                bits = max_length;
-                overflow++;
-            }
-            tree[n].dl = bits;
-            // We overwrite tree[n].dl which is no longer needed
-
-            if (n > max_code)
-                continue; // not a leaf node
-
-            zip_bl_count[bits]++;
-            xbits = 0;
-            if (n >= base)
-                xbits = extra[n - base];
-            f = tree[n].fc;
-            zip_opt_len += f * (bits + xbits);
-            if (stree != null)
-                zip_static_len += f * (stree[n].dl + xbits);
-        }
-        if (overflow == 0)
-            return;
-
-        // This happens for example on obj2 and pic of the Calgary corpus
-
-        // Find the first bit length which could increase:
-        do {
-            bits = max_length - 1;
-            while (zip_bl_count[bits] == 0)
-                bits--;
-            zip_bl_count[bits]--;		// move one leaf down the tree
-            zip_bl_count[bits + 1] += 2;	// move one overflow item as its brother
-            zip_bl_count[max_length]--;
-            /* The brother of the overflow item also moves one step up,
-             * but this does not affect bl_count[max_length]
-             */
-            overflow -= 2;
-        } while (overflow > 0);
-
-        /* Now recompute all bit lengths, scanning in increasing frequency.
-         * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
-         * lengths instead of fixing only the wrong ones. This idea is taken
-         * from 'ar' written by Haruhiko Okumura.)
-         */
-        for (bits = max_length; bits != 0; bits--) {
-            n = zip_bl_count[bits];
-            while (n != 0) {
-                m = zip_heap[--h];
-                if (m > max_code)
-                    continue;
-                if (tree[m].dl != bits) {
-                    zip_opt_len += (bits - tree[m].dl) * tree[m].fc;
-                    tree[m].fc = bits;
-                }
-                n--;
-            }
-        }
-    };
-
-    /* ==========================================================================
-     * Generate the codes for a given tree and bit counts (which need not be
-     * optimal).
-     * IN assertion: the array bl_count contains the bit length statistics for
-     * the given tree and the field len is set for all tree elements.
-     * OUT assertion: the field code is set for all tree elements of non
-     *     zero code length.
-     */
-    var zip_gen_codes = function (tree,	// the tree to decorate
-                                  max_code) {	// largest code with non zero frequency
-        var next_code = new Array(zip_MAX_BITS + 1); // next code value for each bit length
-        var code = 0;		// running code value
-        var bits;			// bit index
-        var n;			// code index
-
-        /* The distribution counts are first used to generate the code values
-         * without bit reversal.
-         */
-        for (bits = 1; bits <= zip_MAX_BITS; bits++) {
-            code = ((code + zip_bl_count[bits - 1]) << 1);
-            next_code[bits] = code;
-        }
-
-        /* Check that the bit counts in bl_count are consistent. The last code
-         * must be all ones.
-         */
-        for (n = 0; n <= max_code; n++) {
-            var len = tree[n].dl;
-            if (len == 0)
-                continue;
-            // Now reverse the bits
-            tree[n].fc = zip_bi_reverse(next_code[len]++, len);
-        }
-    };
-
-    /* ==========================================================================
-     * Construct one Huffman tree and assigns the code bit strings and lengths.
-     * Update the total bit length for the current block.
-     * IN assertion: the field freq is set for all tree elements.
-     * OUT assertions: the fields len and code are set to the optimal bit length
-     *     and corresponding code. The length opt_len is updated; static_len is
-     *     also updated if stree is not null. The field max_code is set.
-     */
-    var zip_build_tree = function (desc) { // the tree descriptor
-        var tree = desc.dyn_tree;
-        var stree = desc.static_tree;
-        var elems = desc.elems;
-        var n, m;		// iterate over heap elements
-        var max_code = -1;	// largest code with non zero frequency
-        var node = elems;	// next internal node of the tree
-
-        /* Construct the initial heap, with least frequent element in
-         * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
-         * heap[0] is not used.
-         */
-        zip_heap_len = 0;
-        zip_heap_max = zip_HEAP_SIZE;
-
-        for (n = 0; n < elems; n++) {
-            if (tree[n].fc != 0) {
-                zip_heap[++zip_heap_len] = max_code = n;
-                zip_depth[n] = 0;
-            } else
-                tree[n].dl = 0;
-        }
-
-        /* The pkzip format requires that at least one distance code exists,
-         * and that at least one bit should be sent even if there is only one
-         * possible code. So to avoid special checks later on we force at least
-         * two codes of non zero frequency.
-         */
-        while (zip_heap_len < 2) {
-            var xnew = zip_heap[++zip_heap_len] = (max_code < 2 ? ++max_code : 0);
-            tree[xnew].fc = 1;
-            zip_depth[xnew] = 0;
-            zip_opt_len--;
-            if (stree != null)
-                zip_static_len -= stree[xnew].dl;
-            // new is 0 or 1 so it does not have extra bits
-        }
-        desc.max_code = max_code;
-
-        /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
-         * establish sub-heaps of increasing lengths:
-         */
-        for (n = zip_heap_len >> 1; n >= 1; n--)
-            zip_pqdownheap(tree, n);
-
-        /* Construct the Huffman tree by repeatedly combining the least two
-         * frequent nodes.
-         */
-        do {
-            n = zip_heap[zip_SMALLEST];
-            zip_heap[zip_SMALLEST] = zip_heap[zip_heap_len--];
-            zip_pqdownheap(tree, zip_SMALLEST);
-
-            m = zip_heap[zip_SMALLEST];  // m = node of next least frequency
-
-            // keep the nodes sorted by frequency
-            zip_heap[--zip_heap_max] = n;
-            zip_heap[--zip_heap_max] = m;
-
-            // Create a new node father of n and m
-            tree[node].fc = tree[n].fc + tree[m].fc;
-            if (zip_depth[n] > zip_depth[m] + 1)
-                zip_depth[node] = zip_depth[n];
-            else
-                zip_depth[node] = zip_depth[m] + 1;
-            tree[n].dl = tree[m].dl = node;
-
-            // and insert the new node in the heap
-            zip_heap[zip_SMALLEST] = node++;
-            zip_pqdownheap(tree, zip_SMALLEST);
-
-        } while (zip_heap_len >= 2);
-
-        zip_heap[--zip_heap_max] = zip_heap[zip_SMALLEST];
-
-        /* At this point, the fields freq and dad are set. We can now
-         * generate the bit lengths.
-         */
-        zip_gen_bitlen(desc);
-
-        // The field len is now set, we can generate the bit codes
-        zip_gen_codes(tree, max_code);
-    };
-
-    /* ==========================================================================
-     * Scan a literal or distance tree to determine the frequencies of the codes
-     * in the bit length tree. Updates opt_len to take into account the repeat
-     * counts. (The contribution of the bit length codes will be added later
-     * during the construction of bl_tree.)
-     */
-    var zip_scan_tree = function (tree,// the tree to be scanned
-                                  max_code) {  // and its largest code of non zero frequency
-        var n;			// iterates over all tree elements
-        var prevlen = -1;		// last emitted length
-        var curlen;			// length of current code
-        var nextlen = tree[0].dl;	// length of next code
-        var count = 0;		// repeat count of the current code
-        var max_count = 7;		// max repeat count
-        var min_count = 4;		// min repeat count
-
-        if (nextlen == 0) {
-            max_count = 138;
-            min_count = 3;
-        }
-        tree[max_code + 1].dl = 0xffff; // guard
-
-        for (n = 0; n <= max_code; n++) {
-            curlen = nextlen;
-            nextlen = tree[n + 1].dl;
-            if (++count < max_count && curlen == nextlen)
-                continue;
-            else if (count < min_count)
-                zip_bl_tree[curlen].fc += count;
-            else if (curlen != 0) {
-                if (curlen != prevlen)
-                    zip_bl_tree[curlen].fc++;
-                zip_bl_tree[zip_REP_3_6].fc++;
-            } else if (count <= 10)
-                zip_bl_tree[zip_REPZ_3_10].fc++;
-            else
-                zip_bl_tree[zip_REPZ_11_138].fc++;
-            count = 0;
-            prevlen = curlen;
-            if (nextlen == 0) {
-                max_count = 138;
-                min_count = 3;
-            } else if (curlen == nextlen) {
-                max_count = 6;
-                min_count = 3;
-            } else {
-                max_count = 7;
-                min_count = 4;
-            }
-        }
-    };
-
-    /* ==========================================================================
-     * Send a literal or distance tree in compressed form, using the codes in
-     * bl_tree.
-     */
-    var zip_send_tree = function (tree, // the tree to be scanned
-                                  max_code) { // and its largest code of non zero frequency
-        var n;			// iterates over all tree elements
-        var prevlen = -1;		// last emitted length
-        var curlen;			// length of current code
-        var nextlen = tree[0].dl;	// length of next code
-        var count = 0;		// repeat count of the current code
-        var max_count = 7;		// max repeat count
-        var min_count = 4;		// min repeat count
-
-        /* tree[max_code+1].dl = -1; */
-        /* guard already set */
-        if (nextlen == 0) {
-            max_count = 138;
-            min_count = 3;
-        }
-
-        for (n = 0; n <= max_code; n++) {
-            curlen = nextlen;
-            nextlen = tree[n + 1].dl;
-            if (++count < max_count && curlen == nextlen) {
-                continue;
-            } else if (count < min_count) {
-                do {
-                    zip_SEND_CODE(curlen, zip_bl_tree);
-                } while (--count != 0);
-            } else if (curlen != 0) {
-                if (curlen != prevlen) {
-                    zip_SEND_CODE(curlen, zip_bl_tree);
-                    count--;
-                }
-                // Assert(count >= 3 && count <= 6, " 3_6?");
-                zip_SEND_CODE(zip_REP_3_6, zip_bl_tree);
-                zip_send_bits(count - 3, 2);
-            } else if (count <= 10) {
-                zip_SEND_CODE(zip_REPZ_3_10, zip_bl_tree);
-                zip_send_bits(count - 3, 3);
-            } else {
-                zip_SEND_CODE(zip_REPZ_11_138, zip_bl_tree);
-                zip_send_bits(count - 11, 7);
-            }
-            count = 0;
-            prevlen = curlen;
-            if (nextlen == 0) {
-                max_count = 138;
-                min_count = 3;
-            } else if (curlen == nextlen) {
-                max_count = 6;
-                min_count = 3;
-            } else {
-                max_count = 7;
-                min_count = 4;
-            }
-        }
-    };
-
-    /* ==========================================================================
-     * Construct the Huffman tree for the bit lengths and return the index in
-     * bl_order of the last bit length code to send.
-     */
-    var zip_build_bl_tree = function () {
-        var max_blindex;  // index of last bit length code of non zero freq
-
-        // Determine the bit length frequencies for literal and distance trees
-        zip_scan_tree(zip_dyn_ltree, zip_l_desc.max_code);
-        zip_scan_tree(zip_dyn_dtree, zip_d_desc.max_code);
-
-        // Build the bit length tree:
-        zip_build_tree(zip_bl_desc);
-        /* opt_len now includes the length of the tree representations, except
-         * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
-         */
-
-        /* Determine the number of bit length codes to send. The pkzip format
-         * requires that at least 4 bit length codes be sent. (appnote.txt says
-         * 3 but the actual value used is 4.)
-         */
-        for (max_blindex = zip_BL_CODES - 1; max_blindex >= 3; max_blindex--) {
-            if (zip_bl_tree[zip_bl_order[max_blindex]].dl != 0) break;
-        }
-        /* Update opt_len to include the bit length tree and counts */
-        zip_opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;
-        return max_blindex;
-    };
-
-    /* ==========================================================================
-     * Send the header for a block using dynamic Huffman trees: the counts, the
-     * lengths of the bit length codes, the literal tree and the distance tree.
-     * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
-     */
-    var zip_send_all_trees = function (lcodes, dcodes, blcodes) { // number of codes for each tree
-        var rank; // index in bl_order
-        zip_send_bits(lcodes - 257, 5); // not +255 as stated in appnote.txt
-        zip_send_bits(dcodes - 1, 5);
-        zip_send_bits(blcodes - 4, 4); // not -3 as stated in appnote.txt
-        for (rank = 0; rank < blcodes; rank++) {
-            zip_send_bits(zip_bl_tree[zip_bl_order[rank]].dl, 3);
-        }
-
-        // send the literal tree
-        zip_send_tree(zip_dyn_ltree, lcodes - 1);
-
-        // send the distance tree
-        zip_send_tree(zip_dyn_dtree, dcodes - 1);
-    };
-
-    /* ==========================================================================
-     * Determine the best encoding for the current block: dynamic trees, static
-     * trees or store, and output the encoded block to the zip file.
-     */
-    var zip_flush_block = function (eof) { // true if this is the last block for a file
-        var opt_lenb, static_lenb; // opt_len and static_len in bytes
-        var max_blindex;	// index of last bit length code of non zero freq
-        var stored_len;	// length of input block
-
-        stored_len = zip_strstart - zip_block_start;
-        zip_flag_buf[zip_last_flags] = zip_flags; // Save the flags for the last 8 items
-
-        // Construct the literal and distance trees
-        zip_build_tree(zip_l_desc);
-        zip_build_tree(zip_d_desc);
-        /* At this point, opt_len and static_len are the total bit lengths of
-         * the compressed block data, excluding the tree representations.
-         */
-
-        /* Build the bit length tree for the above two trees, and get the index
-         * in bl_order of the last bit length code to send.
-         */
-        max_blindex = zip_build_bl_tree();
-
-        // Determine the best encoding. Compute first the block length in bytes
-        opt_lenb = (zip_opt_len + 3 + 7) >> 3;
-        static_lenb = (zip_static_len + 3 + 7) >> 3;
-        if (static_lenb <= opt_lenb)
-            opt_lenb = static_lenb;
-        if (stored_len + 4 <= opt_lenb // 4: two words for the lengths
-            && zip_block_start >= 0) {
-            var i;
-
-            /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
-             * Otherwise we can't have processed more than WSIZE input bytes since
-             * the last block flush, because compression would have been
-             * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
-             * transform a block into a stored block.
-             */
-            zip_send_bits((zip_STORED_BLOCK << 1) + eof, 3);
-            /* send block type */
-            zip_bi_windup();
-            /* align on byte boundary */
-            zip_put_short(stored_len);
-            zip_put_short(~stored_len);
-
-            // copy block
-            for (i = 0; i < stored_len; i++)
-                zip_put_byte(zip_window[zip_block_start + i]);
-
-        } else if (static_lenb == opt_lenb) {
-            zip_send_bits((zip_STATIC_TREES << 1) + eof, 3);
-            zip_compress_block(zip_static_ltree, zip_static_dtree);
-        } else {
-            zip_send_bits((zip_DYN_TREES << 1) + eof, 3);
-            zip_send_all_trees(zip_l_desc.max_code + 1,
-                zip_d_desc.max_code + 1,
-                max_blindex + 1);
-            zip_compress_block(zip_dyn_ltree, zip_dyn_dtree);
-        }
-
-        zip_init_block();
-
-        if (eof != 0)
-            zip_bi_windup();
-    };
-
-    /* ==========================================================================
-     * Save the match info and tally the frequency counts. Return true if
-     * the current block must be flushed.
-     */
-    var zip_ct_tally = function (dist, // distance of matched string
-                                 lc) { // match length-MIN_MATCH or unmatched char (if dist==0)
-        zip_l_buf[zip_last_lit++] = lc;
-        if (dist == 0) {
-            // lc is the unmatched char
-            zip_dyn_ltree[lc].fc++;
-        } else {
-            // Here, lc is the match length - MIN_MATCH
-            dist--;		    // dist = match distance - 1
-            zip_dyn_ltree[zip_length_code[lc] + zip_LITERALS + 1].fc++;
-            zip_dyn_dtree[zip_D_CODE(dist)].fc++;
-
-            zip_d_buf[zip_last_dist++] = dist;
-            zip_flags |= zip_flag_bit;
-        }
-        zip_flag_bit <<= 1;
-
-        // Output the flags if they fill a byte
-        if ((zip_last_lit & 7) == 0) {
-            zip_flag_buf[zip_last_flags++] = zip_flags;
-            zip_flags = 0;
-            zip_flag_bit = 1;
-        }
-        // Try to guess if it is profitable to stop the current block here
-        if (zip_compr_level > 2 && (zip_last_lit & 0xfff) == 0) {
-            // Compute an upper bound for the compressed length
-            var out_length = zip_last_lit * 8;
-            var in_length = zip_strstart - zip_block_start;
-            var dcode;
-
-            for (dcode = 0; dcode < zip_D_CODES; dcode++) {
-                out_length += zip_dyn_dtree[dcode].fc * (5 + zip_extra_dbits[dcode]);
-            }
-            out_length >>= 3;
-            if (zip_last_dist < parseInt(zip_last_lit / 2) &&
-                out_length < parseInt(in_length / 2))
-                return true;
-        }
-        return (zip_last_lit == LIT_BUFSIZE - 1 ||
-            zip_last_dist == zip_DIST_BUFSIZE);
-        /* We avoid equality with LIT_BUFSIZE because of wraparound at 64K
-         * on 16 bit machines and because stored blocks are restricted to
-         * 64K-1 bytes.
-         */
-    };
-
-    /* ==========================================================================
-     * Send the block data compressed using the given Huffman trees
-     */
-    var zip_compress_block = function (ltree,	// literal tree
-                                       dtree) {	// distance tree
-        var dist;		// distance of matched string
-        var lc;		// match length or unmatched char (if dist == 0)
-        var lx = 0;		// running index in l_buf
-        var dx = 0;		// running index in d_buf
-        var fx = 0;		// running index in flag_buf
-        var flag = 0;	// current flags
-        var code;		// the code to send
-        var extra;		// number of extra bits to send
-
-        if (zip_last_lit != 0) do {
-            if ((lx & 7) == 0)
-                flag = zip_flag_buf[fx++];
-            lc = zip_l_buf[lx++] & 0xff;
-            if ((flag & 1) == 0) {
-                zip_SEND_CODE(lc, ltree);
-                /* send a literal byte */
-            } else {
-                // Here, lc is the match length - MIN_MATCH
-                code = zip_length_code[lc];
-                zip_SEND_CODE(code + zip_LITERALS + 1, ltree); // send the length code
-                extra = zip_extra_lbits[code];
-                if (extra != 0) {
-                    lc -= zip_base_length[code];
-                    zip_send_bits(lc, extra); // send the extra length bits
-                }
-                dist = zip_d_buf[dx++];
-                // Here, dist is the match distance - 1
-                code = zip_D_CODE(dist);
-                zip_SEND_CODE(code, dtree);	  // send the distance code
-                extra = zip_extra_dbits[code];
-                if (extra != 0) {
-                    dist -= zip_base_dist[code];
-                    zip_send_bits(dist, extra);   // send the extra distance bits
-                }
-            } // literal or match pair ?
-            flag >>= 1;
-        } while (lx < zip_last_lit);
-
-        zip_SEND_CODE(zip_END_BLOCK, ltree);
-    };
-
-    /* ==========================================================================
-     * Send a value on a given number of bits.
-     * IN assertion: length <= 16 and value fits in length bits.
-     */
-    var zip_Buf_size = 16; // bit size of bi_buf
-    var zip_send_bits = function (value,	// value to send
-                                  length) {	// number of bits
-        /* If not enough room in bi_buf, use (valid) bits from bi_buf and
-         * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid))
-         * unused bits in value.
-         */
-        if (zip_bi_valid > zip_Buf_size - length) {
-            zip_bi_buf |= (value << zip_bi_valid);
-            zip_put_short(zip_bi_buf);
-            zip_bi_buf = (value >> (zip_Buf_size - zip_bi_valid));
-            zip_bi_valid += length - zip_Buf_size;
-        } else {
-            zip_bi_buf |= value << zip_bi_valid;
-            zip_bi_valid += length;
-        }
-    };
-
-    /* ==========================================================================
-     * Reverse the first len bits of a code, using straightforward code (a faster
-     * method would use a table)
-     * IN assertion: 1 <= len <= 15
-     */
-    var zip_bi_reverse = function (code,	// the value to invert
-                                   len) {	// its bit length
-        var res = 0;
-        do {
-            res |= code & 1;
-            code >>= 1;
-            res <<= 1;
-        } while (--len > 0);
-        return res >> 1;
-    };
-
-    /* ==========================================================================
-     * Write out any remaining bits in an incomplete byte.
-     */
-    var zip_bi_windup = function () {
-        if (zip_bi_valid > 8) {
-            zip_put_short(zip_bi_buf);
-        } else if (zip_bi_valid > 0) {
-            zip_put_byte(zip_bi_buf);
-        }
-        zip_bi_buf = 0;
-        zip_bi_valid = 0;
-    };
-
-    var zip_qoutbuf = function () {
-        if (zip_outcnt != 0) {
-            var q, i;
-            q = zip_new_queue();
-            if (zip_qhead == null)
-                zip_qhead = zip_qtail = q;
-            else
-                zip_qtail = zip_qtail.next = q;
-            q.len = zip_outcnt - zip_outoff;
-            for (i = 0; i < q.len; i++)
-                q.ptr[i] = zip_outbuf[zip_outoff + i];
-            zip_outcnt = zip_outoff = 0;
-        }
-    };
-
-    function deflate(buffData, level) {
-        zip_deflate_data = buffData;
-        zip_deflate_pos = 0;
-        zip_deflate_start(level);
-
-        var buff = new Array(1024),
-            pages = [],
-            totalSize = 0,
-            i;
-
-        for (i = 0; i < 1024; i++) buff[i] = 0;
-        while ((i = zip_deflate_internal(buff, 0, buff.length)) > 0) {
-            var buf = new Buffer(buff.slice(0, i));
-            pages.push(buf);
-            totalSize += buf.length;
-        }
-
-        if (pages.length == 1) {
-            return pages[0];
-        }
-
-        var result = new Buffer(totalSize),
-            index = 0;
-
-        for (i = 0; i < pages.length; i++) {
-            pages[i].copy(result, index);
-            index = index + pages[i].length
-        }
-
-        return result;
-    }
-
-    return {
-        deflate: function () {
-            return deflate(inbuf, 8);
-        }
-    }
-}
-
-module.exports = function (/*Buffer*/inbuf) {
-
-    var zlib = require("zlib");
-
-    return {
-        deflate: function () {
-            return new JSDeflater(inbuf).deflate();
-        },
-
-        deflateAsync: function (/*Function*/callback) {
-            var tmp = zlib.createDeflateRaw({chunkSize:(parseInt(inbuf.length / 1024) + 1)*1024}),
-                parts = [], total = 0;
-            tmp.on('data', function(data) {
-                parts.push(data);
-                total += data.length;
-            });
-            tmp.on('end', function() {
-                var buf = new Buffer(total), written = 0;
-                buf.fill(0);
-
-                for (var i = 0; i < parts.length; i++) {
-                    var part = parts[i];
-                    part.copy(buf, written);
-                    written += part.length;
-                }
-                callback && callback(buf);
-            });
-            tmp.end(inbuf);
-        }
-    }
-};
+/*
+ * $Id: rawdeflate.js,v 0.5 2013/04/09 14:25:38 dankogai Exp dankogai $
+ *
+ * GNU General Public License, version 2 (GPL-2.0)
+ *   http://opensource.org/licenses/GPL-2.0
+ * Original:
+ *  http://www.onicos.com/staff/iz/amuse/javascript/expert/deflate.txt
+ */
+function JSDeflater(/*inbuff*/inbuf) {
+
+    /* Copyright (C) 1999 Masanao Izumo <iz@onicos.co.jp>
+     * Version: 1.0.1
+     * LastModified: Dec 25 1999
+     */
+
+    var WSIZE = 32768,		// Sliding Window size
+        zip_STORED_BLOCK = 0,
+        zip_STATIC_TREES = 1,
+        zip_DYN_TREES = 2,
+        zip_DEFAULT_LEVEL = 6,
+        zip_FULL_SEARCH = true,
+        zip_INBUFSIZ = 32768,	// Input buffer size
+        zip_INBUF_EXTRA = 64,	// Extra buffer
+        zip_OUTBUFSIZ = 1024 * 8,
+        zip_window_size = 2 * WSIZE,
+        MIN_MATCH = 3,
+        MAX_MATCH = 258,
+        zip_BITS = 16,
+        LIT_BUFSIZE = 0x2000,
+        zip_HASH_BITS = 13,
+        zip_DIST_BUFSIZE = LIT_BUFSIZE,
+        zip_HASH_SIZE = 1 << zip_HASH_BITS,
+        zip_HASH_MASK = zip_HASH_SIZE - 1,
+        zip_WMASK = WSIZE - 1,
+        zip_NIL = 0, // Tail of hash chains
+        zip_TOO_FAR = 4096,
+        zip_MIN_LOOKAHEAD = MAX_MATCH + MIN_MATCH + 1,
+        zip_MAX_DIST = WSIZE - zip_MIN_LOOKAHEAD,
+        zip_SMALLEST = 1,
+        zip_MAX_BITS = 15,
+        zip_MAX_BL_BITS = 7,
+        zip_LENGTH_CODES = 29,
+        zip_LITERALS = 256,
+        zip_END_BLOCK = 256,
+        zip_L_CODES = zip_LITERALS + 1 + zip_LENGTH_CODES,
+        zip_D_CODES = 30,
+        zip_BL_CODES = 19,
+        zip_REP_3_6 = 16,
+        zip_REPZ_3_10 = 17,
+        zip_REPZ_11_138 = 18,
+        zip_HEAP_SIZE = 2 * zip_L_CODES + 1,
+        zip_H_SHIFT = parseInt((zip_HASH_BITS + MIN_MATCH - 1) / MIN_MATCH);
+
+    var zip_free_queue, zip_qhead, zip_qtail, zip_initflag, zip_outbuf = null, zip_outcnt, zip_outoff, zip_complete,
+        zip_window, zip_d_buf, zip_l_buf, zip_prev, zip_bi_buf, zip_bi_valid, zip_block_start, zip_ins_h, zip_hash_head,
+        zip_prev_match, zip_match_available, zip_match_length, zip_prev_length, zip_strstart, zip_match_start, zip_eofile,
+        zip_lookahead, zip_max_chain_length, zip_max_lazy_match, zip_compr_level, zip_good_match, zip_nice_match,
+        zip_dyn_ltree, zip_dyn_dtree, zip_static_ltree, zip_static_dtree, zip_bl_tree, zip_l_desc, zip_d_desc, zip_bl_desc,
+        zip_bl_count, zip_heap, zip_heap_len, zip_heap_max, zip_depth, zip_length_code, zip_dist_code, zip_base_length,
+        zip_base_dist, zip_flag_buf, zip_last_lit, zip_last_dist, zip_last_flags, zip_flags, zip_flag_bit, zip_opt_len,
+        zip_static_len, zip_deflate_data, zip_deflate_pos;
+
+    var zip_DeflateCT = function () {
+        this.fc = 0; // frequency count or bit string
+        this.dl = 0; // father node in Huffman tree or length of bit string
+    };
+
+    var zip_DeflateTreeDesc = function () {
+        this.dyn_tree = null;	// the dynamic tree
+        this.static_tree = null;	// corresponding static tree or NULL
+        this.extra_bits = null;	// extra bits for each code or NULL
+        this.extra_base = 0;	// base index for extra_bits
+        this.elems = 0;		// max number of elements in the tree
+        this.max_length = 0;	// max bit length for the codes
+        this.max_code = 0;		// largest code with non zero frequency
+    };
+
+    /* Values for max_lazy_match, good_match and max_chain_length, depending on
+     * the desired pack level (0..9). The values given below have been tuned to
+     * exclude worst case performance for pathological files. Better values may be
+     * found for specific files.
+     */
+    var zip_DeflateConfiguration = function (a, b, c, d) {
+        this.good_length = a; // reduce lazy search above this match length
+        this.max_lazy = b;    // do not perform lazy search above this match length
+        this.nice_length = c; // quit search above this match length
+        this.max_chain = d;
+    };
+
+    var zip_DeflateBuffer = function () {
+        this.next = null;
+        this.len = 0;
+        this.ptr = new Array(zip_OUTBUFSIZ);
+        this.off = 0;
+    };
+
+    /* constant tables */
+    var zip_extra_lbits = new Array(
+        0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0);
+    var zip_extra_dbits = new Array(
+        0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13);
+    var zip_extra_blbits = new Array(
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 7);
+    var zip_bl_order = new Array(
+        16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15);
+    var zip_configuration_table = new Array(
+        new zip_DeflateConfiguration(0, 0, 0, 0),
+        new zip_DeflateConfiguration(4, 4, 8, 4),
+        new zip_DeflateConfiguration(4, 5, 16, 8),
+        new zip_DeflateConfiguration(4, 6, 32, 32),
+        new zip_DeflateConfiguration(4, 4, 16, 16),
+        new zip_DeflateConfiguration(8, 16, 32, 32),
+        new zip_DeflateConfiguration(8, 16, 128, 128),
+        new zip_DeflateConfiguration(8, 32, 128, 256),
+        new zip_DeflateConfiguration(32, 128, 258, 1024),
+        new zip_DeflateConfiguration(32, 258, 258, 4096));
+
+
+    /* routines (deflate) */
+
+    var zip_deflate_start = function (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(MAX_MATCH - 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(LIT_BUFSIZE / 8));
+    };
+
+    var zip_deflate_end = function () {
+        zip_free_queue = zip_qhead = zip_qtail = null;
+        zip_outbuf = null;
+        zip_window = null;
+        zip_d_buf = null;
+        zip_l_buf = null;
+        zip_prev = null;
+        zip_dyn_ltree = null;
+        zip_dyn_dtree = null;
+        zip_static_ltree = null;
+        zip_static_dtree = null;
+        zip_bl_tree = null;
+        zip_l_desc = null;
+        zip_d_desc = null;
+        zip_bl_desc = null;
+        zip_bl_count = null;
+        zip_heap = null;
+        zip_depth = null;
+        zip_length_code = null;
+        zip_dist_code = null;
+        zip_base_length = null;
+        zip_base_dist = null;
+        zip_flag_buf = null;
+    };
+
+    var zip_reuse_queue = function (p) {
+        p.next = zip_free_queue;
+        zip_free_queue = p;
+    };
+
+    var zip_new_queue = function () {
+        var p;
+
+        if (zip_free_queue != null) {
+            p = zip_free_queue;
+            zip_free_queue = zip_free_queue.next;
+        }
+        else
+            p = new zip_DeflateBuffer();
+        p.next = null;
+        p.len = p.off = 0;
+
+        return p;
+    };
+
+    var zip_head1 = function (i) {
+        return zip_prev[WSIZE + i];
+    };
+
+    var zip_head2 = function (i, val) {
+        return zip_prev[WSIZE + i] = val;
+    };
+
+    /* put_byte is used for the compressed output, put_ubyte for the
+     * uncompressed output. However unlzw() uses window for its
+     * suffix table instead of its output buffer, so it does not use put_ubyte
+     * (to be cleaned up).
+     */
+    var zip_put_byte = function (c) {
+        zip_outbuf[zip_outoff + zip_outcnt++] = c;
+        if (zip_outoff + zip_outcnt == zip_OUTBUFSIZ)
+            zip_qoutbuf();
+    };
+
+    /* Output a 16 bit value, lsb first */
+    var zip_put_short = function (w) {
+        w &= 0xffff;
+        if (zip_outoff + zip_outcnt < zip_OUTBUFSIZ - 2) {
+            zip_outbuf[zip_outoff + zip_outcnt++] = (w & 0xff);
+            zip_outbuf[zip_outoff + zip_outcnt++] = (w >>> 8);
+        } else {
+            zip_put_byte(w & 0xff);
+            zip_put_byte(w >>> 8);
+        }
+    };
+
+    /* ==========================================================================
+     * Insert string s in the dictionary and set match_head to the previous head
+     * of the hash chain (the most recent string with same hash key). Return
+     * the previous length of the hash chain.
+     * IN  assertion: all calls to to INSERT_STRING are made with consecutive
+     *    input characters and the first MIN_MATCH bytes of s are valid
+     *    (except for the last MIN_MATCH-1 bytes of the input file).
+     */
+    var zip_INSERT_STRING = function () {
+        zip_ins_h = ((zip_ins_h << zip_H_SHIFT)
+            ^ (zip_window[zip_strstart + MIN_MATCH - 1] & 0xff))
+            & zip_HASH_MASK;
+        zip_hash_head = zip_head1(zip_ins_h);
+        zip_prev[zip_strstart & zip_WMASK] = zip_hash_head;
+        zip_head2(zip_ins_h, zip_strstart);
+    };
+
+    /* Send a code of the given tree. c and tree must not have side effects */
+    var zip_SEND_CODE = function (c, tree) {
+        zip_send_bits(tree[c].fc, tree[c].dl);
+    };
+
+    /* Mapping from a distance to a distance code. dist is the distance - 1 and
+     * must not have side effects. dist_code[256] and dist_code[257] are never
+     * used.
+     */
+    var zip_D_CODE = function (dist) {
+        return (dist < 256 ? zip_dist_code[dist]
+            : zip_dist_code[256 + (dist >> 7)]) & 0xff;
+    };
+
+    /* ==========================================================================
+     * Compares to subtrees, using the tree depth as tie breaker when
+     * the subtrees have equal frequency. This minimizes the worst case length.
+     */
+    var zip_SMALLER = function (tree, n, m) {
+        return tree[n].fc < tree[m].fc ||
+            (tree[n].fc == tree[m].fc && zip_depth[n] <= zip_depth[m]);
+    };
+
+    /* ==========================================================================
+     * read string data
+     */
+    var zip_read_buff = function (buff, offset, n) {
+        var i;
+        for (i = 0; i < n && zip_deflate_pos < zip_deflate_data.length; i++)
+            buff[offset + i] =
+                zip_deflate_data[zip_deflate_pos++] & 0xff;
+        return i;
+    };
+
+    /* ==========================================================================
+     * Initialize the "longest match" routines for a new file
+     */
+    var zip_lm_init = function () {
+        var j;
+
+        /* Initialize the hash table. */
+        for (j = 0; j < zip_HASH_SIZE; j++)
+            zip_prev[WSIZE + j] = 0;
+        zip_max_lazy_match = zip_configuration_table[zip_compr_level].max_lazy;
+        zip_good_match = zip_configuration_table[zip_compr_level].good_length;
+        if (!zip_FULL_SEARCH)
+            zip_nice_match = zip_configuration_table[zip_compr_level].nice_length;
+        zip_max_chain_length = zip_configuration_table[zip_compr_level].max_chain;
+
+        zip_strstart = 0;
+        zip_block_start = 0;
+
+        zip_lookahead = zip_read_buff(zip_window, 0, 2 * WSIZE);
+        if (zip_lookahead <= 0) {
+            zip_eofile = true;
+            zip_lookahead = 0;
+            return;
+        }
+        zip_eofile = false;
+        /* Make sure that we always have enough lookahead. This is important
+         * if input comes from a device such as a tty.
+         */
+        while (zip_lookahead < zip_MIN_LOOKAHEAD && !zip_eofile)
+            zip_fill_window();
+
+        /* If lookahead < MIN_MATCH, ins_h is garbage, but this is
+         * not important since only literal bytes will be emitted.
+         */
+        zip_ins_h = 0;
+        for (j = 0; j < MIN_MATCH - 1; j++) {
+            zip_ins_h = ((zip_ins_h << zip_H_SHIFT) ^ (zip_window[j] & 0xff)) & zip_HASH_MASK;
+        }
+    };
+
+    /* ==========================================================================
+     * Set match_start to the longest match starting at the given string and
+     * return its length. Matches shorter or equal to prev_length are discarded,
+     * in which case the result is equal to prev_length and match_start is
+     * garbage.
+     * IN assertions: cur_match is the head of the hash chain for the current
+     *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
+     */
+    var zip_longest_match = function (cur_match) {
+        var chain_length = zip_max_chain_length; // max hash chain length
+        var scanp = zip_strstart; // current string
+        var matchp;		// matched string
+        var len;		// length of current match
+        var best_len = zip_prev_length;	// best match length so far
+
+        /* Stop when cur_match becomes <= limit. To simplify the code,
+         * we prevent matches with the string of window index 0.
+         */
+        var limit = (zip_strstart > zip_MAX_DIST ? zip_strstart - zip_MAX_DIST : zip_NIL);
+
+        var strendp = zip_strstart + MAX_MATCH;
+        var scan_end1 = zip_window[scanp + best_len - 1];
+        var scan_end = zip_window[scanp + best_len];
+
+        /* Do not waste too much time if we already have a good match: */
+        if (zip_prev_length >= zip_good_match)
+            chain_length >>= 2;
+
+        do {
+            matchp = cur_match;
+
+            /* Skip to next match if the match length cannot increase
+             * or if the match length is less than 2:
+             */
+            if (zip_window[matchp + best_len] != scan_end ||
+                zip_window[matchp + best_len - 1] != scan_end1 ||
+                zip_window[matchp] != zip_window[scanp] ||
+                zip_window[++matchp] != zip_window[scanp + 1]) {
+                continue;
+            }
+
+            /* The check at best_len-1 can be removed because it will be made
+             * again later. (This heuristic is not always a win.)
+             * It is not necessary to compare scan[2] and match[2] since they
+             * are always equal when the other bytes match, given that
+             * the hash keys are equal and that HASH_BITS >= 8.
+             */
+            scanp += 2;
+            matchp++;
+
+            /* We check for insufficient lookahead only every 8th comparison;
+             * the 256th check will be made at strstart+258.
+             */
+            do {
+            } while (zip_window[++scanp] == zip_window[++matchp] &&
+                zip_window[++scanp] == zip_window[++matchp] &&
+                zip_window[++scanp] == zip_window[++matchp] &&
+                zip_window[++scanp] == zip_window[++matchp] &&
+                zip_window[++scanp] == zip_window[++matchp] &&
+                zip_window[++scanp] == zip_window[++matchp] &&
+                zip_window[++scanp] == zip_window[++matchp] &&
+                zip_window[++scanp] == zip_window[++matchp] &&
+                scanp < strendp);
+
+            len = MAX_MATCH - (strendp - scanp);
+            scanp = strendp - MAX_MATCH;
+
+            if (len > best_len) {
+                zip_match_start = cur_match;
+                best_len = len;
+                if (zip_FULL_SEARCH) {
+                    if (len >= MAX_MATCH) break;
+                } else {
+                    if (len >= zip_nice_match) break;
+                }
+
+                scan_end1 = zip_window[scanp + best_len - 1];
+                scan_end = zip_window[scanp + best_len];
+            }
+        } while ((cur_match = zip_prev[cur_match & zip_WMASK]) > limit
+            && --chain_length != 0);
+
+        return best_len;
+    };
+
+    /* ==========================================================================
+     * Fill the window when the lookahead becomes insufficient.
+     * Updates strstart and lookahead, and sets eofile if end of input file.
+     * IN assertion: lookahead < MIN_LOOKAHEAD && strstart + lookahead > 0
+     * OUT assertions: at least one byte has been read, or eofile is set;
+     *    file reads are performed for at least two bytes (required for the
+     *    translate_eol option).
+     */
+    var zip_fill_window = function () {
+        var n, m;
+
+        // Amount of free space at the end of the window.
+        var more = zip_window_size - zip_lookahead - zip_strstart;
+
+        /* If the window is almost full and there is insufficient lookahead,
+         * move the upper half to the lower one to make room in the upper half.
+         */
+        if (more == -1) {
+            /* Very unlikely, but possible on 16 bit machine if strstart == 0
+             * and lookahead == 1 (input done one byte at time)
+             */
+            more--;
+        } else if (zip_strstart >= WSIZE + zip_MAX_DIST) {
+            /* By the IN assertion, the window is not empty so we can't confuse
+             * more == 0 with more == 64K on a 16 bit machine.
+             */
+            for (n = 0; n < WSIZE; n++)
+                zip_window[n] = zip_window[n + WSIZE];
+
+            zip_match_start -= WSIZE;
+            zip_strstart -= WSIZE;
+            /* we now have strstart >= MAX_DIST: */
+            zip_block_start -= WSIZE;
+
+            for (n = 0; n < zip_HASH_SIZE; n++) {
+                m = zip_head1(n);
+                zip_head2(n, m >= WSIZE ? m - WSIZE : zip_NIL);
+            }
+            for (n = 0; n < WSIZE; n++) {
+                /* If n is not on any hash chain, prev[n] is garbage but
+                 * its value will never be used.
+                 */
+                m = zip_prev[n];
+                zip_prev[n] = (m >= WSIZE ? m - WSIZE : zip_NIL);
+            }
+            more += WSIZE;
+        }
+        // At this point, more >= 2
+        if (!zip_eofile) {
+            n = zip_read_buff(zip_window, zip_strstart + zip_lookahead, more);
+            if (n <= 0)
+                zip_eofile = true;
+            else
+                zip_lookahead += n;
+        }
+    };
+
+    /* ==========================================================================
+     * Processes a new input file and return its compressed length. This
+     * function does not perform lazy evaluationof matches and inserts
+     * new strings in the dictionary only for unmatched strings or for short
+     * matches. It is used only for the fast compression options.
+     */
+    var zip_deflate_fast = function () {
+        while (zip_lookahead != 0 && zip_qhead == null) {
+            var flush; // set if current block must be flushed
+
+            /* Insert the string window[strstart .. strstart+2] in the
+             * dictionary, and set hash_head to the head of the hash chain:
+             */
+            zip_INSERT_STRING();
+
+            /* Find the longest match, discarding those <= prev_length.
+             * At this point we have always match_length < MIN_MATCH
+             */
+            if (zip_hash_head != zip_NIL &&
+                zip_strstart - zip_hash_head <= zip_MAX_DIST) {
+                /* To simplify the code, we prevent matches with the string
+                 * of window index 0 (in particular we have to avoid a match
+                 * of the string with itself at the start of the input file).
+                 */
+                zip_match_length = zip_longest_match(zip_hash_head);
+                /* longest_match() sets match_start */
+                if (zip_match_length > zip_lookahead)
+                    zip_match_length = zip_lookahead;
+            }
+            if (zip_match_length >= MIN_MATCH) {
+                flush = zip_ct_tally(zip_strstart - zip_match_start,
+                    zip_match_length - MIN_MATCH);
+                zip_lookahead -= zip_match_length;
+
+                /* Insert new strings in the hash table only if the match length
+                 * is not too large. This saves time but degrades compression.
+                 */
+                if (zip_match_length <= zip_max_lazy_match) {
+                    zip_match_length--; // string at strstart already in hash table
+                    do {
+                        zip_strstart++;
+                        zip_INSERT_STRING();
+                        /* strstart never exceeds WSIZE-MAX_MATCH, so there are
+                         * always MIN_MATCH bytes ahead. If lookahead < MIN_MATCH
+                         * these bytes are garbage, but it does not matter since
+                         * the next lookahead bytes will be emitted as literals.
+                         */
+                    } while (--zip_match_length != 0);
+                    zip_strstart++;
+                } else {
+                    zip_strstart += zip_match_length;
+                    zip_match_length = 0;
+                    zip_ins_h = zip_window[zip_strstart] & 0xff;
+                    zip_ins_h = ((zip_ins_h << zip_H_SHIFT) ^ (zip_window[zip_strstart + 1] & 0xff)) & zip_HASH_MASK;
+                }
+            } else {
+                /* No match, output a literal byte */
+                flush = zip_ct_tally(0, zip_window[zip_strstart] & 0xff);
+                zip_lookahead--;
+                zip_strstart++;
+            }
+            if (flush) {
+                zip_flush_block(0);
+                zip_block_start = zip_strstart;
+            }
+
+            /* Make sure that we always have enough lookahead, except
+             * at the end of the input file. We need MAX_MATCH bytes
+             * for the next match, plus MIN_MATCH bytes to insert the
+             * string following the next match.
+             */
+            while (zip_lookahead < zip_MIN_LOOKAHEAD && !zip_eofile)
+                zip_fill_window();
+        }
+    };
+
+    var zip_deflate_better = function () {
+        /* Process the input block. */
+        while (zip_lookahead != 0 && zip_qhead == null) {
+            /* Insert the string window[strstart .. strstart+2] in the
+             * dictionary, and set hash_head to the head of the hash chain:
+             */
+            zip_INSERT_STRING();
+
+            /* Find the longest match, discarding those <= prev_length.
+             */
+            zip_prev_length = zip_match_length;
+            zip_prev_match = zip_match_start;
+            zip_match_length = MIN_MATCH - 1;
+
+            if (zip_hash_head != zip_NIL &&
+                zip_prev_length < zip_max_lazy_match &&
+                zip_strstart - zip_hash_head <= zip_MAX_DIST) {
+                /* To simplify the code, we prevent matches with the string
+                 * of window index 0 (in particular we have to avoid a match
+                 * of the string with itself at the start of the input file).
+                 */
+                zip_match_length = zip_longest_match(zip_hash_head);
+                /* longest_match() sets match_start */
+                if (zip_ma

<TRUNCATED>

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