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Code Csmetics kthoom integration

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OzzieIsaacs 2017-09-17 15:06:01 +02:00
parent 5b9b36f997
commit a159bb0b97
3 changed files with 1289 additions and 1289 deletions
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651
cps/static/js/archive.js
View File

@ -13,341 +13,342 @@ bitjs.archive = bitjs.archive || {};
(function() { (function() {
// =========================================================================== // ===========================================================================
// Stolen from Closure because it's the best way to do Java-like inheritance. // Stolen from Closure because it's the best way to do Java-like inheritance.
bitjs.base = function(me, opt_methodName, var_args) { bitjs.base = function(me, opt_methodName, var_args) {
var caller = arguments.callee.caller; var caller = arguments.callee.caller;
if (caller.superClass_) { if (caller.superClass_) {
// This is a constructor. Call the superclass constructor. // This is a constructor. Call the superclass constructor.
return caller.superClass_.constructor.apply( return caller.superClass_.constructor.apply(
me, Array.prototype.slice.call(arguments, 1)); me, Array.prototype.slice.call(arguments, 1));
} }
var args = Array.prototype.slice.call(arguments, 2); var args = Array.prototype.slice.call(arguments, 2);
var foundCaller = false; var foundCaller = false;
for (var ctor = me.constructor; for (var ctor = me.constructor;
ctor; ctor = ctor.superClass_ && ctor.superClass_.constructor) { ctor; ctor = ctor.superClass_ && ctor.superClass_.constructor) {
if (ctor.prototype[opt_methodName] === caller) { if (ctor.prototype[opt_methodName] === caller) {
foundCaller = true; foundCaller = true;
} else if (foundCaller) { } else if (foundCaller) {
return ctor.prototype[opt_methodName].apply(me, args); return ctor.prototype[opt_methodName].apply(me, args);
} }
} }
// If we did not find the caller in the prototype chain, // If we did not find the caller in the prototype chain,
// then one of two things happened: // then one of two things happened:
// 1) The caller is an instance method. // 1) The caller is an instance method.
// 2) This method was not called by the right caller. // 2) This method was not called by the right caller.
if (me[opt_methodName] === caller) { if (me[opt_methodName] === caller) {
return me.constructor.prototype[opt_methodName].apply(me, args); return me.constructor.prototype[opt_methodName].apply(me, args);
} else { } else {
throw Error( throw Error(
'goog.base called from a method of one name ' + 'goog.base called from a method of one name ' +
'to a method of a different name'); 'to a method of a different name');
} }
}; };
bitjs.inherits = function(childCtor, parentCtor) { bitjs.inherits = function(childCtor, parentCtor) {
/** @constructor */ /** @constructor */
function tempCtor() {}; function tempCtor() {};
tempCtor.prototype = parentCtor.prototype; tempCtor.prototype = parentCtor.prototype;
childCtor.superClass_ = parentCtor.prototype; childCtor.superClass_ = parentCtor.prototype;
childCtor.prototype = new tempCtor(); childCtor.prototype = new tempCtor();
childCtor.prototype.constructor = childCtor; childCtor.prototype.constructor = childCtor;
}; };
// =========================================================================== // ===========================================================================
/** /**
* An unarchive event. * An unarchive event.
* *
* @param {string} type The event type. * @param {string} type The event type.
* @constructor * @constructor
*/ */
bitjs.archive.UnarchiveEvent = function(type) { bitjs.archive.UnarchiveEvent = function(type) {
/** /**
* The event type. * The event type.
* *
* @type {string} * @type {string}
*/ */
this.type = type; this.type = type;
};
/**
* The UnarchiveEvent types.
*/
bitjs.archive.UnarchiveEvent.Type = {
START: 'start',
PROGRESS: 'progress',
EXTRACT: 'extract',
FINISH: 'finish',
INFO: 'info',
ERROR: 'error'
};
/**
* Useful for passing info up to the client (for debugging).
*
* @param {string} msg The info message.
*/
bitjs.archive.UnarchiveInfoEvent = function(msg) {
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.INFO);
/**
* The information message.
*
* @type {string}
*/
this.msg = msg;
};
bitjs.inherits(bitjs.archive.UnarchiveInfoEvent, bitjs.archive.UnarchiveEvent);
/**
* An unrecoverable error has occured.
*
* @param {string} msg The error message.
*/
bitjs.archive.UnarchiveErrorEvent = function(msg) {
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.ERROR);
/**
* The information message.
*
* @type {string}
*/
this.msg = msg;
};
bitjs.inherits(bitjs.archive.UnarchiveErrorEvent, bitjs.archive.UnarchiveEvent);
/**
* Start event.
*
* @param {string} msg The info message.
*/
bitjs.archive.UnarchiveStartEvent = function() {
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.START);
};
bitjs.inherits(bitjs.archive.UnarchiveStartEvent, bitjs.archive.UnarchiveEvent);
/**
* Finish event.
*
* @param {string} msg The info message.
*/
bitjs.archive.UnarchiveFinishEvent = function() {
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.FINISH);
};
bitjs.inherits(bitjs.archive.UnarchiveFinishEvent, bitjs.archive.UnarchiveEvent);
/**
* Progress event.
*/
bitjs.archive.UnarchiveProgressEvent = function(
currentFilename,
currentFileNumber,
currentBytesUnarchivedInFile,
currentBytesUnarchived,
totalUncompressedBytesInArchive,
totalFilesInArchive) {
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.PROGRESS);
this.currentFilename = currentFilename;
this.currentFileNumber = currentFileNumber;
this.currentBytesUnarchivedInFile = currentBytesUnarchivedInFile;
this.totalFilesInArchive = totalFilesInArchive;
this.currentBytesUnarchived = currentBytesUnarchived;
this.totalUncompressedBytesInArchive = totalUncompressedBytesInArchive;
};
bitjs.inherits(bitjs.archive.UnarchiveProgressEvent, bitjs.archive.UnarchiveEvent);
/**
* All extracted files returned by an Unarchiver will implement
* the following interface:
*
* interface UnarchivedFile {
* string filename
* TypedArray fileData
* }
*
*/
/**
* Extract event.
*/
bitjs.archive.UnarchiveExtractEvent = function(unarchivedFile) {
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.EXTRACT);
/**
* @type {UnarchivedFile}
*/
this.unarchivedFile = unarchivedFile;
};
bitjs.inherits(bitjs.archive.UnarchiveExtractEvent, bitjs.archive.UnarchiveEvent);
/**
* Base class for all Unarchivers.
*
* @param {ArrayBuffer} arrayBuffer The Array Buffer.
* @param {string} opt_pathToBitJS Optional string for where the BitJS files are located.
* @constructor
*/
bitjs.archive.Unarchiver = function(arrayBuffer, opt_pathToBitJS) {
/**
* The ArrayBuffer object.
* @type {ArrayBuffer}
* @protected
*/
this.ab = arrayBuffer;
/**
* The path to the BitJS files.
* @type {string}
* @private
*/
this.pathToBitJS_ = opt_pathToBitJS || '';
/**
* A map from event type to an array of listeners.
* @type {Map.<string, Array>}
*/
this.listeners_ = {};
for (var type in bitjs.archive.UnarchiveEvent.Type) {
this.listeners_[bitjs.archive.UnarchiveEvent.Type[type]] = [];
}
};
/**
* Private web worker initialized during start().
* @type {Worker}
* @private
*/
bitjs.archive.Unarchiver.prototype.worker_ = null;
/**
* This method must be overridden by the subclass to return the script filename.
* @return {string} The script filename.
* @protected.
*/
bitjs.archive.Unarchiver.prototype.getScriptFileName = function() {
throw 'Subclasses of AbstractUnarchiver must overload getScriptFileName()';
};
/**
* Adds an event listener for UnarchiveEvents.
*
* @param {string} Event type.
* @param {function} An event handler function.
*/
bitjs.archive.Unarchiver.prototype.addEventListener = function(type, listener) {
if (type in this.listeners_) {
if (this.listeners_[type].indexOf(listener) == -1) {
this.listeners_[type].push(listener);
}
}
};
/**
* Removes an event listener.
*
* @param {string} Event type.
* @param {EventListener|function} An event listener or handler function.
*/
bitjs.archive.Unarchiver.prototype.removeEventListener = function(type, listener) {
if (type in this.listeners_) {
var index = this.listeners_[type].indexOf(listener);
if (index != -1) {
this.listeners_[type].splice(index, 1);
}
}
};
/**
* Receive an event and pass it to the listener functions.
*
* @param {bitjs.archive.UnarchiveEvent} e
* @private
*/
bitjs.archive.Unarchiver.prototype.handleWorkerEvent_ = function(e) {
if ((e instanceof bitjs.archive.UnarchiveEvent || e.type) &&
this.listeners_[e.type] instanceof Array) {
this.listeners_[e.type].forEach(function (listener) { listener(e) });
if (e.type == bitjs.archive.UnarchiveEvent.Type.FINISH) {
this.worker_.terminate();
}
} else {
console.log(e);
}
};
/**
* Starts the unarchive in a separate Web Worker thread and returns immediately.
*/
bitjs.archive.Unarchiver.prototype.start = function() {
var me = this;
var scriptFileName = this.pathToBitJS_ + this.getScriptFileName();
if (scriptFileName) {
this.worker_ = new Worker(scriptFileName);
this.worker_.onerror = function(e) {
console.log('Worker error: message = ' + e.message);
throw e;
}; };
this.worker_.onmessage = function(e) { /**
if (typeof e.data == 'string') { * The UnarchiveEvent types.
// Just log any strings the workers pump our way. */
console.log(e.data); bitjs.archive.UnarchiveEvent.Type = {
} else { START: 'start',
// Assume that it is an UnarchiveEvent. Some browsers preserve the 'type' PROGRESS: 'progress',
// so that instanceof UnarchiveEvent returns true, but others do not. EXTRACT: 'extract',
me.handleWorkerEvent_(e.data); FINISH: 'finish',
} INFO: 'info',
ERROR: 'error'
}; };
this.worker_.postMessage({file: this.ab}); /**
} * Useful for passing info up to the client (for debugging).
}; *
* @param {string} msg The info message.
*/
bitjs.archive.UnarchiveInfoEvent = function(msg) {
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.INFO);
/** /**
* Terminates the Web Worker for this Unarchiver and returns immediately. * The information message.
*/ *
bitjs.archive.Unarchiver.prototype.stop = function() { * @type {string}
if (this.worker_) { */
this.worker_.terminate(); this.msg = msg;
} };
}; bitjs.inherits(bitjs.archive.UnarchiveInfoEvent, bitjs.archive.UnarchiveEvent);
/**
* An unrecoverable error has occured.
*
* @param {string} msg The error message.
*/
bitjs.archive.UnarchiveErrorEvent = function(msg) {
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.ERROR);
/**
* The information message.
*
* @type {string}
*/
this.msg = msg;
};
bitjs.inherits(bitjs.archive.UnarchiveErrorEvent, bitjs.archive.UnarchiveEvent);
/**
* Start event.
*
* @param {string} msg The info message.
*/
bitjs.archive.UnarchiveStartEvent = function() {
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.START);
};
bitjs.inherits(bitjs.archive.UnarchiveStartEvent, bitjs.archive.UnarchiveEvent);
/**
* Finish event.
*
* @param {string} msg The info message.
*/
bitjs.archive.UnarchiveFinishEvent = function() {
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.FINISH);
};
bitjs.inherits(bitjs.archive.UnarchiveFinishEvent, bitjs.archive.UnarchiveEvent);
/**
* Progress event.
*/
bitjs.archive.UnarchiveProgressEvent = function(
currentFilename,
currentFileNumber,
currentBytesUnarchivedInFile,
currentBytesUnarchived,
totalUncompressedBytesInArchive,
totalFilesInArchive)
{
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.PROGRESS);
this.currentFilename = currentFilename;
this.currentFileNumber = currentFileNumber;
this.currentBytesUnarchivedInFile = currentBytesUnarchivedInFile;
this.totalFilesInArchive = totalFilesInArchive;
this.currentBytesUnarchived = currentBytesUnarchived;
this.totalUncompressedBytesInArchive = totalUncompressedBytesInArchive;
};
bitjs.inherits(bitjs.archive.UnarchiveProgressEvent, bitjs.archive.UnarchiveEvent);
/**
* All extracted files returned by an Unarchiver will implement
* the following interface:
*
* interface UnarchivedFile {
* string filename
* TypedArray fileData
* }
*
*/
/**
* Extract event.
*/
bitjs.archive.UnarchiveExtractEvent = function(unarchivedFile) {
bitjs.base(this, bitjs.archive.UnarchiveEvent.Type.EXTRACT);
/**
* @type {UnarchivedFile}
*/
this.unarchivedFile = unarchivedFile;
};
bitjs.inherits(bitjs.archive.UnarchiveExtractEvent, bitjs.archive.UnarchiveEvent);
/** /**
* Unzipper * Base class for all Unarchivers.
* @extends {bitjs.archive.Unarchiver} *
* @constructor * @param {ArrayBuffer} arrayBuffer The Array Buffer.
*/ * @param {string} opt_pathToBitJS Optional string for where the BitJS files are located.
bitjs.archive.Unzipper = function(arrayBuffer, opt_pathToBitJS) { * @constructor
bitjs.base(this, arrayBuffer, opt_pathToBitJS); */
}; bitjs.archive.Unarchiver = function(arrayBuffer, opt_pathToBitJS) {
bitjs.inherits(bitjs.archive.Unzipper, bitjs.archive.Unarchiver); /**
bitjs.archive.Unzipper.prototype.getScriptFileName = function() { return 'unzip.js' }; * The ArrayBuffer object.
* @type {ArrayBuffer}
* @protected
*/
this.ab = arrayBuffer;
/** /**
* Unrarrer * The path to the BitJS files.
* @extends {bitjs.archive.Unarchiver} * @type {string}
* @constructor * @private
*/ */
bitjs.archive.Unrarrer = function(arrayBuffer, opt_pathToBitJS) { this.pathToBitJS_ = opt_pathToBitJS || '';
bitjs.base(this, arrayBuffer, opt_pathToBitJS);
};
bitjs.inherits(bitjs.archive.Unrarrer, bitjs.archive.Unarchiver);
bitjs.archive.Unrarrer.prototype.getScriptFileName = function() { return 'unrar.js' };
/** /**
* Untarrer * A map from event type to an array of listeners.
* @extends {bitjs.archive.Unarchiver} * @type {Map.<string, Array>}
* @constructor */
*/ this.listeners_ = {};
bitjs.archive.Untarrer = function(arrayBuffer, opt_pathToBitJS) { for (var type in bitjs.archive.UnarchiveEvent.Type) {
bitjs.base(this, arrayBuffer, opt_pathToBitJS); this.listeners_[bitjs.archive.UnarchiveEvent.Type[type]] = [];
}; }
bitjs.inherits(bitjs.archive.Untarrer, bitjs.archive.Unarchiver); };
bitjs.archive.Untarrer.prototype.getScriptFileName = function() { return 'untar.js' };
})(); /**
* Private web worker initialized during start().
* @type {Worker}
* @private
*/
bitjs.archive.Unarchiver.prototype.worker_ = null;
/**
* This method must be overridden by the subclass to return the script filename.
* @return {string} The script filename.
* @protected.
*/
bitjs.archive.Unarchiver.prototype.getScriptFileName = function() {
throw 'Subclasses of AbstractUnarchiver must overload getScriptFileName()';
};
/**
* Adds an event listener for UnarchiveEvents.
*
* @param {string} Event type.
* @param {function} An event handler function.
*/
bitjs.archive.Unarchiver.prototype.addEventListener = function(type, listener) {
if (type in this.listeners_) {
if (this.listeners_[type].indexOf(listener) == -1) {
this.listeners_[type].push(listener);
}
}
};
/**
* Removes an event listener.
*
* @param {string} Event type.
* @param {EventListener|function} An event listener or handler function.
*/
bitjs.archive.Unarchiver.prototype.removeEventListener = function(type, listener) {
if (type in this.listeners_) {
var index = this.listeners_[type].indexOf(listener);
if (index != -1) {
this.listeners_[type].splice(index, 1);
}
}
};
/**
* Receive an event and pass it to the listener functions.
*
* @param {bitjs.archive.UnarchiveEvent} e
* @private
*/
bitjs.archive.Unarchiver.prototype.handleWorkerEvent_ = function(e) {
if ((e instanceof bitjs.archive.UnarchiveEvent || e.type) &&
this.listeners_[e.type] instanceof Array) {
this.listeners_[e.type].forEach(function (listener) { listener(e) });
if (e.type == bitjs.archive.UnarchiveEvent.Type.FINISH) {
this.worker_.terminate();
}
} else {
console.log(e);
}
};
/**
* Starts the unarchive in a separate Web Worker thread and returns immediately.
*/
bitjs.archive.Unarchiver.prototype.start = function() {
var me = this;
var scriptFileName = this.pathToBitJS_ + this.getScriptFileName();
if (scriptFileName) {
this.worker_ = new Worker(scriptFileName);
this.worker_.onerror = function(e) {
console.log('Worker error: message = ' + e.message);
throw e;
};
this.worker_.onmessage = function(e) {
if (typeof e.data == 'string') {
// Just log any strings the workers pump our way.
console.log(e.data);
} else {
// Assume that it is an UnarchiveEvent. Some browsers preserve the 'type'
// so that instanceof UnarchiveEvent returns true, but others do not.
me.handleWorkerEvent_(e.data);
}
};
this.worker_.postMessage({file: this.ab});
}
};
/**
* Terminates the Web Worker for this Unarchiver and returns immediately.
*/
bitjs.archive.Unarchiver.prototype.stop = function() {
if (this.worker_) {
this.worker_.terminate();
}
};
/**
* Unzipper
* @extends {bitjs.archive.Unarchiver}
* @constructor
*/
bitjs.archive.Unzipper = function(arrayBuffer, opt_pathToBitJS) {
bitjs.base(this, arrayBuffer, opt_pathToBitJS);
};
bitjs.inherits(bitjs.archive.Unzipper, bitjs.archive.Unarchiver);
bitjs.archive.Unzipper.prototype.getScriptFileName = function() { return 'unzip.js' };
/**
* Unrarrer
* @extends {bitjs.archive.Unarchiver}
* @constructor
*/
bitjs.archive.Unrarrer = function(arrayBuffer, opt_pathToBitJS) {
bitjs.base(this, arrayBuffer, opt_pathToBitJS);
};
bitjs.inherits(bitjs.archive.Unrarrer, bitjs.archive.Unarchiver);
bitjs.archive.Unrarrer.prototype.getScriptFileName = function() { return 'unrar.js' };
/**
* Untarrer
* @extends {bitjs.archive.Unarchiver}
* @constructor
*/
bitjs.archive.Untarrer = function(arrayBuffer, opt_pathToBitJS) {
bitjs.base(this, arrayBuffer, opt_pathToBitJS);
};
bitjs.inherits(bitjs.archive.Untarrer, bitjs.archive.Unarchiver);
bitjs.archive.Untarrer.prototype.getScriptFileName = function() { return 'untar.js' };
})();

931
cps/static/js/io.js
View File

@ -14,470 +14,469 @@ bitjs.io = bitjs.io || {};
(function() { (function() {
// mask for getting the Nth bit (zero-based) // mask for getting the Nth bit (zero-based)
bitjs.BIT = [ 0x01, 0x02, 0x04, 0x08, bitjs.BIT = [ 0x01, 0x02, 0x04, 0x08,
0x10, 0x20, 0x40, 0x80, 0x10, 0x20, 0x40, 0x80,
0x100, 0x200, 0x400, 0x800, 0x100, 0x200, 0x400, 0x800,
0x1000, 0x2000, 0x4000, 0x8000]; 0x1000, 0x2000, 0x4000, 0x8000];
// mask for getting N number of bits (0-8) // mask for getting N number of bits (0-8)
var BITMASK = [0, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF ]; var BITMASK = [0, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF ];
/** /**
* This bit stream peeks and consumes bits out of a binary stream. * This bit stream peeks and consumes bits out of a binary stream.
* *
* @param {ArrayBuffer} ab An ArrayBuffer object or a Uint8Array. * @param {ArrayBuffer} ab An ArrayBuffer object or a Uint8Array.
* @param {boolean} rtl Whether the stream reads bits from the byte starting * @param {boolean} rtl Whether the stream reads bits from the byte starting
* from bit 7 to 0 (true) or bit 0 to 7 (false). * from bit 7 to 0 (true) or bit 0 to 7 (false).
* @param {Number} opt_offset The offset into the ArrayBuffer * @param {Number} opt_offset The offset into the ArrayBuffer
* @param {Number} opt_length The length of this BitStream * @param {Number} opt_length The length of this BitStream
*/ */
bitjs.io.BitStream = function(ab, rtl, opt_offset, opt_length) { bitjs.io.BitStream = function(ab, rtl, opt_offset, opt_length) {
if (!ab || !ab.toString || ab.toString() !== "[object ArrayBuffer]") { if (!ab || !ab.toString || ab.toString() !== "[object ArrayBuffer]") {
throw "Error! BitArray constructed with an invalid ArrayBuffer object"; throw "Error! BitArray constructed with an invalid ArrayBuffer object";
} }
var offset = opt_offset || 0; var offset = opt_offset || 0;
var length = opt_length || ab.byteLength; var length = opt_length || ab.byteLength;
this.bytes = new Uint8Array(ab, offset, length); this.bytes = new Uint8Array(ab, offset, length);
this.bytePtr = 0; // tracks which byte we are on this.bytePtr = 0; // tracks which byte we are on
this.bitPtr = 0; // tracks which bit we are on (can have values 0 through 7) this.bitPtr = 0; // tracks which bit we are on (can have values 0 through 7)
this.peekBits = rtl ? this.peekBits_rtl : this.peekBits_ltr; this.peekBits = rtl ? this.peekBits_rtl : this.peekBits_ltr;
}; };
/** /**
* byte0 byte1 byte2 byte3 * byte0 byte1 byte2 byte3
* 7......0 | 7......0 | 7......0 | 7......0 * 7......0 | 7......0 | 7......0 | 7......0
* *
* The bit pointer starts at bit0 of byte0 and moves left until it reaches * The bit pointer starts at bit0 of byte0 and moves left until it reaches
* bit7 of byte0, then jumps to bit0 of byte1, etc. * bit7 of byte0, then jumps to bit0 of byte1, etc.
* @param {number} n The number of bits to peek. * @param {number} n The number of bits to peek.
* @param {boolean=} movePointers Whether to move the pointer, defaults false. * @param {boolean=} movePointers Whether to move the pointer, defaults false.
* @return {number} The peeked bits, as an unsigned number. * @return {number} The peeked bits, as an unsigned number.
*/ */
bitjs.io.BitStream.prototype.peekBits_ltr = function(n, movePointers) { bitjs.io.BitStream.prototype.peekBits_ltr = function(n, movePointers) {
if (n <= 0 || typeof n != typeof 1) { if (n <= 0 || typeof n != typeof 1) {
return 0; return 0;
} }
var movePointers = movePointers || false, var movePointers = movePointers || false,
bytePtr = this.bytePtr, bytePtr = this.bytePtr,
bitPtr = this.bitPtr, bitPtr = this.bitPtr,
result = 0, result = 0,
bitsIn = 0, bitsIn = 0,
bytes = this.bytes; bytes = this.bytes;
// keep going until we have no more bits left to peek at // keep going until we have no more bits left to peek at
// TODO: Consider putting all bits from bytes we will need into a variable and then // TODO: Consider putting all bits from bytes we will need into a variable and then
// shifting/masking it to just extract the bits we want. // shifting/masking it to just extract the bits we want.
// This could be considerably faster when reading more than 3 or 4 bits at a time. // This could be considerably faster when reading more than 3 or 4 bits at a time.
while (n > 0) { while (n > 0) {
if (bytePtr >= bytes.length) { if (bytePtr >= bytes.length) {
throw "Error! Overflowed the bit stream! n=" + n + ", bytePtr=" + bytePtr + ", bytes.length=" + throw "Error! Overflowed the bit stream! n=" + n + ", bytePtr=" + bytePtr + ", bytes.length=" +
bytes.length + ", bitPtr=" + bitPtr; bytes.length + ", bitPtr=" + bitPtr;
return -1; return -1;
} }
var numBitsLeftInThisByte = (8 - bitPtr); var numBitsLeftInThisByte = (8 - bitPtr);
if (n >= numBitsLeftInThisByte) { if (n >= numBitsLeftInThisByte) {
var mask = (BITMASK[numBitsLeftInThisByte] << bitPtr); var mask = (BITMASK[numBitsLeftInThisByte] << bitPtr);
result |= (((bytes[bytePtr] & mask) >> bitPtr) << bitsIn); result |= (((bytes[bytePtr] & mask) >> bitPtr) << bitsIn);
bytePtr++; bytePtr++;
bitPtr = 0; bitPtr = 0;
bitsIn += numBitsLeftInThisByte; bitsIn += numBitsLeftInThisByte;
n -= numBitsLeftInThisByte; n -= numBitsLeftInThisByte;
} }
else { else {
var mask = (BITMASK[n] << bitPtr); var mask = (BITMASK[n] << bitPtr);
result |= (((bytes[bytePtr] & mask) >> bitPtr) << bitsIn); result |= (((bytes[bytePtr] & mask) >> bitPtr) << bitsIn);
bitPtr += n; bitPtr += n;
bitsIn += n; bitsIn += n;
n = 0; n = 0;
} }
} }
if (movePointers) { if (movePointers) {
this.bitPtr = bitPtr; this.bitPtr = bitPtr;
this.bytePtr = bytePtr; this.bytePtr = bytePtr;
} }
return result; return result;
}; };
/** /**
* byte0 byte1 byte2 byte3 * byte0 byte1 byte2 byte3
* 7......0 | 7......0 | 7......0 | 7......0 * 7......0 | 7......0 | 7......0 | 7......0
* *
* The bit pointer starts at bit7 of byte0 and moves right until it reaches * The bit pointer starts at bit7 of byte0 and moves right until it reaches
* bit0 of byte0, then goes to bit7 of byte1, etc. * bit0 of byte0, then goes to bit7 of byte1, etc.
* @param {number} n The number of bits to peek. * @param {number} n The number of bits to peek.
* @param {boolean=} movePointers Whether to move the pointer, defaults false. * @param {boolean=} movePointers Whether to move the pointer, defaults false.
* @return {number} The peeked bits, as an unsigned number. * @return {number} The peeked bits, as an unsigned number.
*/ */
bitjs.io.BitStream.prototype.peekBits_rtl = function(n, movePointers) { bitjs.io.BitStream.prototype.peekBits_rtl = function(n, movePointers) {
if (n <= 0 || typeof n != typeof 1) { if (n <= 0 || typeof n != typeof 1) {
return 0; return 0;
} }
var movePointers = movePointers || false, var movePointers = movePointers || false,
bytePtr = this.bytePtr, bytePtr = this.bytePtr,
bitPtr = this.bitPtr, bitPtr = this.bitPtr,
result = 0, result = 0,
bytes = this.bytes; bytes = this.bytes;
// keep going until we have no more bits left to peek at // keep going until we have no more bits left to peek at
// TODO: Consider putting all bits from bytes we will need into a variable and then // TODO: Consider putting all bits from bytes we will need into a variable and then
// shifting/masking it to just extract the bits we want. // shifting/masking it to just extract the bits we want.
// This could be considerably faster when reading more than 3 or 4 bits at a time. // This could be considerably faster when reading more than 3 or 4 bits at a time.
while (n > 0) { while (n > 0) {
if (bytePtr >= bytes.length) { if (bytePtr >= bytes.length) {
throw "Error! Overflowed the bit stream! n=" + n + ", bytePtr=" + bytePtr + ", bytes.length=" + throw "Error! Overflowed the bit stream! n=" + n + ", bytePtr=" + bytePtr + ", bytes.length=" +
bytes.length + ", bitPtr=" + bitPtr; bytes.length + ", bitPtr=" + bitPtr;
return -1; return -1;
} }
var numBitsLeftInThisByte = (8 - bitPtr); var numBitsLeftInThisByte = (8 - bitPtr);
if (n >= numBitsLeftInThisByte) { if (n >= numBitsLeftInThisByte) {
result <<= numBitsLeftInThisByte; result <<= numBitsLeftInThisByte;
result |= (BITMASK[numBitsLeftInThisByte] & bytes[bytePtr]); result |= (BITMASK[numBitsLeftInThisByte] & bytes[bytePtr]);
bytePtr++; bytePtr++;
bitPtr = 0; bitPtr = 0;
n -= numBitsLeftInThisByte; n -= numBitsLeftInThisByte;
} }
else { else {
result <<= n; result <<= n;
result |= ((bytes[bytePtr] & (BITMASK[n] << (8 - n - bitPtr))) >> (8 - n - bitPtr)); result |= ((bytes[bytePtr] & (BITMASK[n] << (8 - n - bitPtr))) >> (8 - n - bitPtr));
bitPtr += n; bitPtr += n;
n = 0; n = 0;
} }
} }
if (movePointers) { if (movePointers) {
this.bitPtr = bitPtr; this.bitPtr = bitPtr;
this.bytePtr = bytePtr; this.bytePtr = bytePtr;
} }
return result; return result;
}; };
/** /**
* Some voodoo magic. * Some voodoo magic.
*/ */
bitjs.io.BitStream.prototype.getBits = function() { bitjs.io.BitStream.prototype.getBits = function() {
return (((((this.bytes[this.bytePtr] & 0xff) << 16) + return (((((this.bytes[this.bytePtr] & 0xff) << 16) +
((this.bytes[this.bytePtr+1] & 0xff) << 8) + ((this.bytes[this.bytePtr+1] & 0xff) << 8) +
((this.bytes[this.bytePtr+2] & 0xff))) >>> (8-this.bitPtr)) & 0xffff); ((this.bytes[this.bytePtr+2] & 0xff))) >>> (8-this.bitPtr)) & 0xffff);
}; };
/** /**
* Reads n bits out of the stream, consuming them (moving the bit pointer). * Reads n bits out of the stream, consuming them (moving the bit pointer).
* @param {number} n The number of bits to read. * @param {number} n The number of bits to read.
* @return {number} The read bits, as an unsigned number. * @return {number} The read bits, as an unsigned number.
*/ */
bitjs.io.BitStream.prototype.readBits = function(n) { bitjs.io.BitStream.prototype.readBits = function(n) {
return this.peekBits(n, true); return this.peekBits(n, true);
}; };
/** /**
* This returns n bytes as a sub-array, advancing the pointer if movePointers * This returns n bytes as a sub-array, advancing the pointer if movePointers
* is true. Only use this for uncompressed blocks as this throws away remaining * is true. Only use this for uncompressed blocks as this throws away remaining
* bits in the current byte. * bits in the current byte.
* @param {number} n The number of bytes to peek. * @param {number} n The number of bytes to peek.
* @param {boolean=} movePointers Whether to move the pointer, defaults false. * @param {boolean=} movePointers Whether to move the pointer, defaults false.
* @return {Uint8Array} The subarray. * @return {Uint8Array} The subarray.
*/ */
bitjs.io.BitStream.prototype.peekBytes = function(n, movePointers) { bitjs.io.BitStream.prototype.peekBytes = function(n, movePointers) {
if (n <= 0 || typeof n != typeof 1) { if (n <= 0 || typeof n != typeof 1) {
return 0; return 0;
} }
// from http://tools.ietf.org/html/rfc1951#page-11 // from http://tools.ietf.org/html/rfc1951#page-11
// "Any bits of input up to the next byte boundary are ignored." // "Any bits of input up to the next byte boundary are ignored."
while (this.bitPtr != 0) { while (this.bitPtr != 0) {
this.readBits(1); this.readBits(1);
} }
var movePointers = movePointers || false; var movePointers = movePointers || false;
var bytePtr = this.bytePtr, var bytePtr = this.bytePtr,
bitPtr = this.bitPtr; bitPtr = this.bitPtr;
var result = this.bytes.subarray(bytePtr, bytePtr + n); var result = this.bytes.subarray(bytePtr, bytePtr + n);
if (movePointers) { if (movePointers) {
this.bytePtr += n; this.bytePtr += n;
} }
return result; return result;
}; };
/** /**
* @param {number} n The number of bytes to read. * @param {number} n The number of bytes to read.
* @return {Uint8Array} The subarray. * @return {Uint8Array} The subarray.
*/ */
bitjs.io.BitStream.prototype.readBytes = function(n) { bitjs.io.BitStream.prototype.readBytes = function(n) {
return this.peekBytes(n, true); return this.peekBytes(n, true);
}; };
/** /**
* This object allows you to peek and consume bytes as numbers and strings * This object allows you to peek and consume bytes as numbers and strings
* out of an ArrayBuffer. In this buffer, everything must be byte-aligned. * out of an ArrayBuffer. In this buffer, everything must be byte-aligned.
* *
* @param {ArrayBuffer} ab The ArrayBuffer object. * @param {ArrayBuffer} ab The ArrayBuffer object.
* @param {number=} opt_offset The offset into the ArrayBuffer * @param {number=} opt_offset The offset into the ArrayBuffer
* @param {number=} opt_length The length of this BitStream * @param {number=} opt_length The length of this BitStream
* @constructor * @constructor
*/ */
bitjs.io.ByteStream = function(ab, opt_offset, opt_length) { bitjs.io.ByteStream = function(ab, opt_offset, opt_length) {
var offset = opt_offset || 0; var offset = opt_offset || 0;
var length = opt_length || ab.byteLength; var length = opt_length || ab.byteLength;
this.bytes = new Uint8Array(ab, offset, length); this.bytes = new Uint8Array(ab, offset, length);
this.ptr = 0; this.ptr = 0;
}; };
/** /**
* Peeks at the next n bytes as an unsigned number but does not advance the * Peeks at the next n bytes as an unsigned number but does not advance the
* pointer * pointer
* TODO: This apparently cannot read more than 4 bytes as a number? * TODO: This apparently cannot read more than 4 bytes as a number?
* @param {number} n The number of bytes to peek at. * @param {number} n The number of bytes to peek at.
* @return {number} The n bytes interpreted as an unsigned number. * @return {number} The n bytes interpreted as an unsigned number.
*/ */
bitjs.io.ByteStream.prototype.peekNumber = function(n) { bitjs.io.ByteStream.prototype.peekNumber = function(n) {
// TODO: return error if n would go past the end of the stream? // TODO: return error if n would go past the end of the stream?
if (n <= 0 || typeof n != typeof 1) if (n <= 0 || typeof n != typeof 1)
return -1; return -1;
var result = 0; var result = 0;
// read from last byte to first byte and roll them in // read from last byte to first byte and roll them in
var curByte = this.ptr + n - 1; var curByte = this.ptr + n - 1;
while (curByte >= this.ptr) { while (curByte >= this.ptr) {
result <<= 8; result <<= 8;
result |= this.bytes[curByte]; result |= this.bytes[curByte];
--curByte; --curByte;
} }
return result; return result;
}; };
/** /**
* Returns the next n bytes as an unsigned number (or -1 on error) * Returns the next n bytes as an unsigned number (or -1 on error)
* and advances the stream pointer n bytes. * and advances the stream pointer n bytes.
* @param {number} n The number of bytes to read. * @param {number} n The number of bytes to read.
* @return {number} The n bytes interpreted as an unsigned number. * @return {number} The n bytes interpreted as an unsigned number.
*/ */
bitjs.io.ByteStream.prototype.readNumber = function(n) { bitjs.io.ByteStream.prototype.readNumber = function(n) {
var num = this.peekNumber( n ); var num = this.peekNumber( n );
this.ptr += n; this.ptr += n;
return num; return num;
}; };
/** /**
* Returns the next n bytes as a signed number but does not advance the * Returns the next n bytes as a signed number but does not advance the
* pointer. * pointer.
* @param {number} n The number of bytes to read. * @param {number} n The number of bytes to read.
* @return {number} The bytes interpreted as a signed number. * @return {number} The bytes interpreted as a signed number.
*/ */
bitjs.io.ByteStream.prototype.peekSignedNumber = function(n) { bitjs.io.ByteStream.prototype.peekSignedNumber = function(n) {
var num = this.peekNumber(n); var num = this.peekNumber(n);
var HALF = Math.pow(2, (n * 8) - 1); var HALF = Math.pow(2, (n * 8) - 1);
var FULL = HALF * 2; var FULL = HALF * 2;
if (num >= HALF) num -= FULL; if (num >= HALF) num -= FULL;
return num; return num;
}; };
/** /**
* Returns the next n bytes as a signed number and advances the stream pointer. * Returns the next n bytes as a signed number and advances the stream pointer.
* @param {number} n The number of bytes to read. * @param {number} n The number of bytes to read.
* @return {number} The bytes interpreted as a signed number. * @return {number} The bytes interpreted as a signed number.
*/ */
bitjs.io.ByteStream.prototype.readSignedNumber = function(n) { bitjs.io.ByteStream.prototype.readSignedNumber = function(n) {
var num = this.peekSignedNumber(n); var num = this.peekSignedNumber(n);
this.ptr += n; this.ptr += n;
return num; return num;
}; };
/** /**
* This returns n bytes as a sub-array, advancing the pointer if movePointers * This returns n bytes as a sub-array, advancing the pointer if movePointers
* is true. * is true.
* @param {number} n The number of bytes to read. * @param {number} n The number of bytes to read.
* @param {boolean} movePointers Whether to move the pointers. * @param {boolean} movePointers Whether to move the pointers.
* @return {Uint8Array} The subarray. * @return {Uint8Array} The subarray.
*/ */
bitjs.io.ByteStream.prototype.peekBytes = function(n, movePointers) { bitjs.io.ByteStream.prototype.peekBytes = function(n, movePointers) {
if (n <= 0 || typeof n != typeof 1) { if (n <= 0 || typeof n != typeof 1) {
return null; return null;
} }
var result = this.bytes.subarray(this.ptr, this.ptr + n); var result = this.bytes.subarray(this.ptr, this.ptr + n);
if (movePointers) { if (movePointers) {
this.ptr += n; this.ptr += n;
} }
return result; return result;
}; };
/** /**
* Reads the next n bytes as a sub-array. * Reads the next n bytes as a sub-array.
* @param {number} n The number of bytes to read. * @param {number} n The number of bytes to read.
* @return {Uint8Array} The subarray. * @return {Uint8Array} The subarray.
*/ */
bitjs.io.ByteStream.prototype.readBytes = function(n) { bitjs.io.ByteStream.prototype.readBytes = function(n) {
return this.peekBytes(n, true); return this.peekBytes(n, true);
}; };
/** /**
* Peeks at the next n bytes as a string but does not advance the pointer. * Peeks at the next n bytes as a string but does not advance the pointer.
* @param {number} n The number of bytes to peek at. * @param {number} n The number of bytes to peek at.
* @return {string} The next n bytes as a string. * @return {string} The next n bytes as a string.
*/ */
bitjs.io.ByteStream.prototype.peekString = function(n) { bitjs.io.ByteStream.prototype.peekString = function(n) {
if (n <= 0 || typeof n != typeof 1) { if (n <= 0 || typeof n != typeof 1) {
return ""; return "";
} }
var result = ""; var result = "";
for (var p = this.ptr, end = this.ptr + n; p < end; ++p) { for (var p = this.ptr, end = this.ptr + n; p < end; ++p) {
result += String.fromCharCode(this.bytes[p]); result += String.fromCharCode(this.bytes[p]);
} }
return result; return result;
}; };
/** /**
* Returns the next n bytes as an ASCII string and advances the stream pointer * Returns the next n bytes as an ASCII string and advances the stream pointer
* n bytes. * n bytes.
* @param {number} n The number of bytes to read. * @param {number} n The number of bytes to read.
* @return {string} The next n bytes as a string. * @return {string} The next n bytes as a string.
*/ */
bitjs.io.ByteStream.prototype.readString = function(n) { bitjs.io.ByteStream.prototype.readString = function(n) {
var strToReturn = this.peekString(n); var strToReturn = this.peekString(n);
this.ptr += n; this.ptr += n;
return strToReturn; return strToReturn;
}; };
/** /**
* A write-only Byte buffer which uses a Uint8 Typed Array as a backing store. * A write-only Byte buffer which uses a Uint8 Typed Array as a backing store.
* @param {number} numBytes The number of bytes to allocate. * @param {number} numBytes The number of bytes to allocate.
* @constructor * @constructor
*/ */
bitjs.io.ByteBuffer = function(numBytes) { bitjs.io.ByteBuffer = function(numBytes) {
if (typeof numBytes != typeof 1 || numBytes <= 0) { if (typeof numBytes != typeof 1 || numBytes <= 0) {
throw "Error! ByteBuffer initialized with '" + numBytes + "'"; throw "Error! ByteBuffer initialized with '" + numBytes + "'";
} }
this.data = new Uint8Array(numBytes); this.data = new Uint8Array(numBytes);
this.ptr = 0; this.ptr = 0;
}; };
/** /**
* @param {number} b The byte to insert. * @param {number} b The byte to insert.
*/ */
bitjs.io.ByteBuffer.prototype.insertByte = function(b) { bitjs.io.ByteBuffer.prototype.insertByte = function(b) {
// TODO: throw if byte is invalid? // TODO: throw if byte is invalid?
this.data[this.ptr++] = b; this.data[this.ptr++] = b;
}; };
/** /**
* @param {Array.<number>|Uint8Array|Int8Array} bytes The bytes to insert. * @param {Array.<number>|Uint8Array|Int8Array} bytes The bytes to insert.
*/ */
bitjs.io.ByteBuffer.prototype.insertBytes = function(bytes) { bitjs.io.ByteBuffer.prototype.insertBytes = function(bytes) {
// TODO: throw if bytes is invalid? // TODO: throw if bytes is invalid?
this.data.set(bytes, this.ptr); this.data.set(bytes, this.ptr);
this.ptr += bytes.length; this.ptr += bytes.length;
}; };
/** /**
* Writes an unsigned number into the next n bytes. If the number is too large * Writes an unsigned number into the next n bytes. If the number is too large
* to fit into n bytes or is negative, an error is thrown. * to fit into n bytes or is negative, an error is thrown.
* @param {number} num The unsigned number to write. * @param {number} num The unsigned number to write.
* @param {number} numBytes The number of bytes to write the number into. * @param {number} numBytes The number of bytes to write the number into.
*/ */
bitjs.io.ByteBuffer.prototype.writeNumber = function(num, numBytes) { bitjs.io.ByteBuffer.prototype.writeNumber = function(num, numBytes) {
if (numBytes < 1) { if (numBytes < 1) {
throw 'Trying to write into too few bytes: ' + numBytes; throw 'Trying to write into too few bytes: ' + numBytes;
} }
if (num < 0) { if (num < 0) {
throw 'Trying to write a negative number (' + num + throw 'Trying to write a negative number (' + num +
') as an unsigned number to an ArrayBuffer'; ') as an unsigned number to an ArrayBuffer';
} }
if (num > (Math.pow(2, numBytes * 8) - 1)) { if (num > (Math.pow(2, numBytes * 8) - 1)) {
throw 'Trying to write ' + num + ' into only ' + numBytes + ' bytes'; throw 'Trying to write ' + num + ' into only ' + numBytes + ' bytes';
} }
// Roll 8-bits at a time into an array of bytes. // Roll 8-bits at a time into an array of bytes.
var bytes = []; var bytes = [];
while (numBytes-- > 0) { while (numBytes-- > 0) {
var eightBits = num & 255; var eightBits = num & 255;
bytes.push(eightBits); bytes.push(eightBits);
num >>= 8; num >>= 8;
} }
this.insertBytes(bytes); this.insertBytes(bytes);
}; };
/** /**
* Writes a signed number into the next n bytes. If the number is too large * Writes a signed number into the next n bytes. If the number is too large
* to fit into n bytes, an error is thrown. * to fit into n bytes, an error is thrown.
* @param {number} num The signed number to write. * @param {number} num The signed number to write.
* @param {number} numBytes The number of bytes to write the number into. * @param {number} numBytes The number of bytes to write the number into.
*/ */
bitjs.io.ByteBuffer.prototype.writeSignedNumber = function(num, numBytes) { bitjs.io.ByteBuffer.prototype.writeSignedNumber = function(num, numBytes) {
if (numBytes < 1) { if (numBytes < 1) {
throw 'Trying to write into too few bytes: ' + numBytes; throw 'Trying to write into too few bytes: ' + numBytes;
} }
var HALF = Math.pow(2, (numBytes * 8) - 1); var HALF = Math.pow(2, (numBytes * 8) - 1);
if (num >= HALF || num < -HALF) { if (num >= HALF || num < -HALF) {
throw 'Trying to write ' + num + ' into only ' + numBytes + ' bytes'; throw 'Trying to write ' + num + ' into only ' + numBytes + ' bytes';
} }
// Roll 8-bits at a time into an array of bytes. // Roll 8-bits at a time into an array of bytes.
var bytes = []; var bytes = [];
while (numBytes-- > 0) { while (numBytes-- > 0) {
var eightBits = num & 255; var eightBits = num & 255;
bytes.push(eightBits); bytes.push(eightBits);
num >>= 8; num >>= 8;
} }
this.insertBytes(bytes); this.insertBytes(bytes);
}; };
/** /**
* @param {string} str The ASCII string to write. * @param {string} str The ASCII string to write.
*/ */
bitjs.io.ByteBuffer.prototype.writeASCIIString = function(str) { bitjs.io.ByteBuffer.prototype.writeASCIIString = function(str) {
for (var i = 0; i < str.length; ++i) { for (var i = 0; i < str.length; ++i) {
var curByte = str.charCodeAt(i); var curByte = str.charCodeAt(i);
if (curByte < 0 || curByte > 255) { if (curByte < 0 || curByte > 255) {
throw 'Trying to write a non-ASCII string!'; throw 'Trying to write a non-ASCII string!';
} }
this.insertByte(curByte); this.insertByte(curByte);
} }
}; };
})(); })();

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cps/static/js/unzip.js
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