mgsrc-js - npm Package Compare versions

Comparing version 1.2.0 to 1.2.1

dist/uncompress.js

@@ -29,18 +29,18 @@ "use strict";
 function uncompress(buf) {
-    var d = new Uint8Array(buf);
-    var res = new Uint8Array(0x4000);
+    var inp = new Uint8Array(buf);
+    var out = new Uint8Array(0x4000);
     var rp = 0;
     var wp = 0;
-    var magic = String.fromCharCode(d[0], d[1], d[2]);
+    var magic = String.fromCharCode(inp[0], inp[1], inp[2]);
     if (magic != "MGS") {
         throw new Error("Not a MGS object.");
     }
-    while (rp < d.byteLength) {
-        if (d[rp++] === 0)
+    while (rp < inp.byteLength) {
+        if (inp[rp++] === 0)
             break;
     }
-    if (rp === d.byteLength) {
+    if (rp === inp.byteLength) {
         throw new Error("Not a MGS object.");
     }
-    var settings = d[rp++];
+    var settings = inp[rp++];
     if ((settings & 0x80) === 0) {
@@ -50,3 +50,3 @@ throw new Error("Not a compressed object.");
     wp = rp;
-    var dataSize = (d[rp + 1] << 8) | d[rp];
+    var dataSize = (inp[rp + 1] << 8) | inp[rp];
     // this function don't see data size. msgdrv use data size to stack
@@ -56,6 +56,7 @@ // MGS data from the bottom of the memory page.
     for (var i = 0; i < rp; i++) {
-        res[i] = d[i];
+        out[i] = inp[i];
     }
-    res[3] = "3".charCodeAt(0); // fix MGSAxx -> MGS3xx
-    res[rp - 3] &= 0x7f; // drop compressions flag.
+    out[3] = "3".charCodeAt(0); // fix MGSAxx -> MGS3xx
+    out[rp - 3] &= 0x7f; // drop compressions flag.
+    /* the compression format seems to be similar to LZEXE's method, also as known as [lze](http://gorry.haun.org/pw/?lze). */
     var _B = 1;
@@ -69,3 +70,3 @@ var _C = 0;
             _B = 8;
-            _C = d[rp++];
+            _C = inp[rp++];
         }
@@ -78,3 +79,3 @@ return ret;
             // 1
-            res[wp++] = d[rp++];
+            out[wp++] = inp[rp++];
         }
@@ -85,9 +86,7 @@ else {
                 // 01
-                var ll = d[rp++];
-                var hh = d[rp++];
-                if (0x20 <= hh) {
-                    size = hh >> 5;
-                }
-                else {
-                    size = d[rp++];
+                var ll = inp[rp++];
+                var hh = inp[rp++];
+                size = hh >> 5;
+                if (size == 0) {
+                    size = inp[rp++];
                     if (size === 0)
@@ -101,3 +100,3 @@ break;
                 size = (readInfoBit() << 1) | readInfoBit();
-                var ll = d[rp++];
+                var ll = inp[rp++];
                 var hh = 0xff;
@@ -107,3 +106,3 @@ offset = _Uint16ToInt16((hh << 8) | ll);
             for (var i = 0; i < size + 2; i++) {
-                res[wp] = res[wp + offset];
+                out[wp] = out[wp + offset];
                 wp++;
@@ -113,4 +112,4 @@ }
     }
-    return res.buffer.slice(res.byteOffset, res.byteOffset + wp);
+    return out.buffer.slice(out.byteOffset, out.byteOffset + wp);
 }
 exports.uncompress = uncompress;

package.json

 {
   "name": "mgsrc-js",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "Decompiler for MGSDRV object.",
@@ -5,0 +5,0 @@ "main": "dist/index.js",

No alert changes

Improved metrics

Total package byte prevSize

38682

increased by0.3%

Worsened metrics

Lines of code

1169

decreased by-0.09%

No dependency changes