Code cosmetics comic reader

This commit is contained in:
OzzieIsaacs
2017-10-08 10:41:43 +02:00
parent 90729de87f
commit 1eb10be253
7 changed files with 270 additions and 262 deletions
+52 -50
View File
@@ -8,7 +8,7 @@
*
* http://kthoom.googlecode.com/hg/docs/unrar.html
*/
/* global bitjs */
/* global bitjs, importScripts */
// This file expects to be invoked as a Worker (see onmessage below).
importScripts("io.js");
@@ -42,23 +42,23 @@ var postProgress = function() {
// shows a byte value as its hex representation
var nibble = "0123456789ABCDEF";
var byteValueToHexString = function(num) {
return nibble[num>>4] + nibble[num&0xF];
return nibble[num>>4] + nibble[num & 0xF];
};
var twoByteValueToHexString = function(num) {
return nibble[(num>>12)&0xF] + nibble[(num>>8)&0xF] + nibble[(num>>4)&0xF] + nibble[num&0xF];
return nibble[(num>>12) & 0xF] + nibble[(num>>8) & 0xF] + nibble[(num>>4) & 0xF] + nibble[num & 0xF];
};
// Volume Types
var MARK_HEAD = 0x72,
MAIN_HEAD = 0x73,
// MARK_HEAD = 0x72;
var MAIN_HEAD = 0x73,
FILE_HEAD = 0x74,
COMM_HEAD = 0x75,
AV_HEAD = 0x76,
SUB_HEAD = 0x77,
PROTECT_HEAD = 0x78,
SIGN_HEAD = 0x79,
NEWSUB_HEAD = 0x7a,
// COMM_HEAD = 0x75,
// AV_HEAD = 0x76,
// SUB_HEAD = 0x77,
// PROTECT_HEAD = 0x78,
// SIGN_HEAD = 0x79,
// NEWSUB_HEAD = 0x7a,
ENDARC_HEAD = 0x7b;
// bstream is a bit stream
@@ -66,7 +66,7 @@ var RarVolumeHeader = function(bstream) {
var headPos = bstream.bytePtr;
// byte 1,2
info("Rar Volume Header @"+bstream.bytePtr);
info("Rar Volume Header @" + bstream.bytePtr);
this.crc = bstream.readBits(16);
info(" crc=" + this.crc);
@@ -147,7 +147,7 @@ var RarVolumeHeader = function(bstream) {
this.HighPackSize = 0;
this.HighUnpSize = 0;
if (this.unpackedSize == 0xffffffff) {
this.HighUnpSize = 0x7fffffff
this.HighUnpSize = 0x7fffffff;
this.unpackedSize = 0xffffffff;
}
}
@@ -160,7 +160,7 @@ var RarVolumeHeader = function(bstream) {
// read in filename
this.filename = bstream.readBytes(this.nameSize);
for (var _i = 0, _s = ''; _i < this.filename.length; _i++) {
for (var _i = 0, _s = ""; _i < this.filename.length ; _i++) {
_s += String.fromCharCode(this.filename[_i]);
}
@@ -177,14 +177,16 @@ var RarVolumeHeader = function(bstream) {
// this is adapted straight out of arcread.cpp, Archive::ReadHeader()
for (var I = 0; I < 4; ++I) {
var rmode = extTimeFlags >> ((3-I)*4);
var rmode = extTimeFlags >> ((3 - I) * 4);
if ((rmode & 8)==0)
continue;
if (I!=0)
if (I!=0) {
bstream.readBits(16);
var count = (rmode&3);
for (var J = 0; J < count; ++J)
bstream.readBits(8);
}
var count = (rmode & 3);
for (var J = 0; J < count; ++J) {
bstream.readBits(8);
}
}
}
@@ -193,7 +195,7 @@ var RarVolumeHeader = function(bstream) {
}
while(headPos + this.headSize > bstream.bytePtr) bstream.readBits(1);
while (headPos + this.headSize > bstream.bytePtr) bstream.readBits(1);
info("Found FILE_HEAD with packSize=" + this.packSize + ", unpackedSize= " + this.unpackedSize + ", hostOS=" + this.hostOS + ", unpVer=" + this.unpVer + ", method=" + this.method + ", filename=" + this.filename);
@@ -206,24 +208,24 @@ var RarVolumeHeader = function(bstream) {
}
};
var BLOCK_LZ = 0,
BLOCK_PPM = 1;
var BLOCK_LZ = 0;
// BLOCK_PPM = 1;
var rLDecode = [0,1,2,3,4,5,6,7,8,10,12,14,16,20,24,28,32,40,48,56,64,80,96,112,128,160,192,224],
rLBits = [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],
rDBitLengthCounts = [4,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,14,0,12],
rSDDecode = [0,4,8,16,32,64,128,192],
var rLDecode = [0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224],
rLBits = [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],
rDBitLengthCounts = [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 14, 0, 12],
rSDDecode = [0, 4, 8, 16, 32, 64, 128, 192],
rSDBits = [2,2,3, 4, 5, 6, 6, 6];
var rDDecode = [0, 1, 2, 3, 4, 6, 8, 12, 16, 24, 32,
48, 64, 96, 128, 192, 256, 384, 512, 768, 1024, 1536, 2048, 3072,
4096, 6144, 8192, 12288, 16384, 24576, 32768, 49152, 65536, 98304,
131072, 196608, 262144, 327680, 393216, 458752, 524288, 589824,
655360, 720896, 786432, 851968, 917504, 983040];
48, 64, 96, 128, 192, 256, 384, 512, 768, 1024, 1536, 2048, 3072,
4096, 6144, 8192, 12288, 16384, 24576, 32768, 49152, 65536, 98304,
131072, 196608, 262144, 327680, 393216, 458752, 524288, 589824,
655360, 720896, 786432, 851968, 917504, 983040];
var rDBits = [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, 14, 14,
15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16];
5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14,
15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16];
var rLOW_DIST_REP_COUNT = 16;
@@ -232,35 +234,35 @@ var rNC = 299,
rLDC = 17,
rRC = 28,
rBC = 20,
rHUFF_TABLE_SIZE = (rNC+rDC+rRC+rLDC);
rHUFF_TABLE_SIZE = (rNC + rDC + rRC + rLDC);
var UnpBlockType = BLOCK_LZ;
var UnpOldTable = new Array(rHUFF_TABLE_SIZE);
var BD = { //bitdecode
DecodeLen: new Array(16),
DecodePos: new Array(16),
DecodeNum: new Array(rBC)
DecodeLen: new Array(16),
DecodePos: new Array(16),
DecodeNum: new Array(rBC)
};
var LD = { //litdecode
DecodeLen: new Array(16),
DecodePos: new Array(16),
DecodeNum: new Array(rNC)
DecodeLen: new Array(16),
DecodePos: new Array(16),
DecodeNum: new Array(rNC)
};
var DD = { //distdecode
DecodeLen: new Array(16),
DecodePos: new Array(16),
DecodeNum: new Array(rDC)
DecodeLen: new Array(16),
DecodePos: new Array(16),
DecodeNum: new Array(rDC)
};
var LDD = { //low dist decode
DecodeLen: new Array(16),
DecodePos: new Array(16),
DecodeNum: new Array(rLDC)
DecodeLen: new Array(16),
DecodePos: new Array(16),
DecodeNum: new Array(rLDC)
};
var RD = { //rep decode
DecodeLen: new Array(16),
DecodePos: new Array(16),
DecodeNum: new Array(rRC)
DecodeLen: new Array(16),
DecodePos: new Array(16),
DecodeNum: new Array(rRC)
};
var rBuffer;
@@ -742,7 +744,7 @@ function unpack(v) {
rBuffer = new bitjs.io.ByteBuffer(v.header.unpackedSize);
info("Unpacking "+v.filename+" RAR v"+Ver);
info("Unpacking " + v.filename+" RAR v" + Ver);
switch(Ver) {
case 15: // rar 1.5 compression
@@ -816,7 +818,7 @@ var unrar = function(arrayBuffer) {
postMessage(new bitjs.archive.UnarchiveStartEvent());
var bstream = new bitjs.io.BitStream(arrayBuffer, false /* rtl */);
var header = new RarVolumeHeader(bstream);
if (header.crc == 0x6152 &&
header.headType == 0x72 &&