微信小程序打包算法

[billfeller]

\Tencent\微信web开发者工具\package.nw\app\dist\weapp\commit\pack.js

"use strict";

function init() {
    var e = require("glob"),
        r = require("fs"),
        n = require("path"),
        t = require("../../common/log/log.js");
    _exports = function(f, u, i) {
        var c = 0,
            a = 1,
            o = 2,
            B = 3,
            w = 4,
            l = [new Buffer(1), new Buffer(4), new Buffer(4), new Buffer(4), new Buffer(1)];
        l[c].writeIntLE(190), l[a].writeInt32BE(1), l[w].writeIntLE(237);
        var s = 0,
            v = [],
            h = [],
            g = [],
            p = [],
            E = [];
        e(f + "/**", {
            nodir: !0
        }, function(e, c) {
            if (e) t.error(e);
            else {
                s = c.length, c.forEach(function(e) {
                    var t = r.readFileSync(e),
                        u = n.relative(f, e),
                        i = new Buffer("/" + u.replace(/\\/g, "/"));
                    g.push(i), p.push(t)
                });
                var a = 18 + 12 * s + Buffer.concat(g).length;
                h = g.map(function(e, r) {
                    var n = new Buffer(4);
                    n.writeInt32BE(e.length);
                    var t = new Buffer(4),
                        f = p[r].length,
                        u = a;
                    t.writeInt32BE(u), a += f;
                    var i = new Buffer(4);
                    return i.writeInt32BE(f), Buffer.concat([n, e, t, i])
                });
                var w = new Buffer(4);
                w.writeInt32BE(s), h.unshift(w), v = Buffer.concat(h), E = Buffer.concat(p), l[o].writeInt32BE(v.length), l[B].writeInt32BE(E.length), l = Buffer.concat(l);
                var I = Buffer.concat([l, v, E]);
                r.writeFileSync(u, I), t.info("pack.js create " + u + " success!"), i(null, u)
            }
        })
    }
}
var _exports;
init(), module.exports = _exports;

[GendSmith]

请问这个算法有逆算法吗