mirror of
https://github.com/mozilla/pdf.js.git
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Name all constructors.
This commit is contained in:
Kalervo Kujala
parent
f239d01bde
commit
1ef4c94de2
12 changed files with 223 additions and 213 deletions
166
src/stream.js
166
src/stream.js
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@ -3,8 +3,8 @@
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'use strict';
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var Stream = (function streamStream() {
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function constructor(arrayBuffer, start, length, dict) {
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var Stream = (function StreamClosure() {
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function Stream(arrayBuffer, start, length, dict) {
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this.bytes = new Uint8Array(arrayBuffer);
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this.start = start || 0;
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this.pos = this.start;
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@ -14,7 +14,7 @@ var Stream = (function streamStream() {
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// required methods for a stream. if a particular stream does not
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// implement these, an error should be thrown
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constructor.prototype = {
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Stream.prototype = {
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get length() {
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return this.end - this.start;
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},
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@ -67,11 +67,11 @@ var Stream = (function streamStream() {
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isStream: true
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};
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return constructor;
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return Stream;
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})();
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var StringStream = (function stringStream() {
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function constructor(str) {
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var StringStream = (function StringStreamClosure() {
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function StringStream(str) {
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var length = str.length;
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var bytes = new Uint8Array(length);
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for (var n = 0; n < length; ++n)
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@ -79,21 +79,21 @@ var StringStream = (function stringStream() {
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Stream.call(this, bytes);
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}
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constructor.prototype = Stream.prototype;
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StringStream.prototype = Stream.prototype;
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return constructor;
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return StringStream;
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})();
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// super class for the decoding streams
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var DecodeStream = (function decodeStream() {
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function constructor() {
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var DecodeStream = (function DecodeStreamClosure() {
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function DecodeStream() {
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this.pos = 0;
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this.bufferLength = 0;
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this.eof = false;
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this.buffer = null;
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}
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constructor.prototype = {
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DecodeStream.prototype = {
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ensureBuffer: function decodestream_ensureBuffer(requested) {
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var buffer = this.buffer;
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var current = buffer ? buffer.byteLength : 0;
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@ -178,24 +178,24 @@ var DecodeStream = (function decodeStream() {
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}
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};
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return constructor;
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return DecodeStream;
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})();
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var FakeStream = (function fakeStream() {
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function constructor(stream) {
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var FakeStream = (function FakeStreamClosure() {
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function FakeStream(stream) {
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this.dict = stream.dict;
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DecodeStream.call(this);
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}
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constructor.prototype = Object.create(DecodeStream.prototype);
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constructor.prototype.readBlock = function fakeStreamReadBlock() {
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FakeStream.prototype = Object.create(DecodeStream.prototype);
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FakeStream.prototype.readBlock = function fakeStreamReadBlock() {
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var bufferLength = this.bufferLength;
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bufferLength += 1024;
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var buffer = this.ensureBuffer(bufferLength);
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this.bufferLength = bufferLength;
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};
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constructor.prototype.getBytes = function fakeStreamGetBytes(length) {
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FakeStream.prototype.getBytes = function fakeStreamGetBytes(length) {
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var end, pos = this.pos;
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if (length) {
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@ -217,18 +217,20 @@ var FakeStream = (function fakeStream() {
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return this.buffer.subarray(pos, end);
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};
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return constructor;
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return FakeStream;
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})();
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var StreamsSequenceStream = (function streamSequenceStream() {
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function constructor(streams) {
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var StreamsSequenceStream = (function StreamsSequenceStreamClosure() {
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function StreamsSequenceStream(streams) {
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this.streams = streams;
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DecodeStream.call(this);
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}
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constructor.prototype = Object.create(DecodeStream.prototype);
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StreamsSequenceStream.prototype = Object.create(DecodeStream.prototype);
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StreamsSequenceStream.prototype.readBlock =
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function streamSequenceStreamReadBlock() {
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constructor.prototype.readBlock = function streamSequenceStreamReadBlock() {
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var streams = this.streams;
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if (streams.length == 0) {
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this.eof = true;
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@ -243,10 +245,10 @@ var StreamsSequenceStream = (function streamSequenceStream() {
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this.bufferLength = newLength;
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};
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return constructor;
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return StreamsSequenceStream;
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})();
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var FlateStream = (function flateStream() {
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var FlateStream = (function FlateStreamClosure() {
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var codeLenCodeMap = new Uint32Array([
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16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15
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]);
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@ -339,7 +341,7 @@ var FlateStream = (function flateStream() {
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0x50003, 0x50013, 0x5000b, 0x5001b, 0x50007, 0x50017, 0x5000f, 0x00000
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]), 5];
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function constructor(stream) {
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function FlateStream(stream) {
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var bytes = stream.getBytes();
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var bytesPos = 0;
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@ -364,9 +366,9 @@ var FlateStream = (function flateStream() {
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DecodeStream.call(this);
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}
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constructor.prototype = Object.create(DecodeStream.prototype);
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FlateStream.prototype = Object.create(DecodeStream.prototype);
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constructor.prototype.getBits = function flateStreamGetBits(bits) {
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FlateStream.prototype.getBits = function flateStreamGetBits(bits) {
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var codeSize = this.codeSize;
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var codeBuf = this.codeBuf;
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var bytes = this.bytes;
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@ -386,7 +388,7 @@ var FlateStream = (function flateStream() {
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return b;
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};
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constructor.prototype.getCode = function flateStreamGetCode(table) {
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FlateStream.prototype.getCode = function flateStreamGetCode(table) {
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var codes = table[0];
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var maxLen = table[1];
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var codeSize = this.codeSize;
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@ -412,7 +414,7 @@ var FlateStream = (function flateStream() {
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return codeVal;
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};
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constructor.prototype.generateHuffmanTable =
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FlateStream.prototype.generateHuffmanTable =
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function flateStreamGenerateHuffmanTable(lengths) {
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var n = lengths.length;
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@ -451,7 +453,7 @@ var FlateStream = (function flateStream() {
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return [codes, maxLen];
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};
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constructor.prototype.readBlock = function flateStreamReadBlock() {
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FlateStream.prototype.readBlock = function flateStreamReadBlock() {
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// read block header
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var hdr = this.getBits(3);
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if (hdr & 1)
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@ -582,11 +584,11 @@ var FlateStream = (function flateStream() {
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}
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};
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return constructor;
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return FlateStream;
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})();
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var PredictorStream = (function predictorStream() {
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function constructor(stream, params) {
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var PredictorStream = (function PredictorStreamClosure() {
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function PredictorStream(stream, params) {
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var predictor = this.predictor = params.get('Predictor') || 1;
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if (predictor <= 1)
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@ -613,9 +615,9 @@ var PredictorStream = (function predictorStream() {
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return this;
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}
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constructor.prototype = Object.create(DecodeStream.prototype);
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PredictorStream.prototype = Object.create(DecodeStream.prototype);
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constructor.prototype.readBlockTiff =
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PredictorStream.prototype.readBlockTiff =
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function predictorStreamReadBlockTiff() {
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var rowBytes = this.rowBytes;
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@ -676,7 +678,9 @@ var PredictorStream = (function predictorStream() {
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this.bufferLength += rowBytes;
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};
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constructor.prototype.readBlockPng = function predictorStreamReadBlockPng() {
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PredictorStream.prototype.readBlockPng =
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function predictorStreamReadBlockPng() {
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var rowBytes = this.rowBytes;
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var pixBytes = this.pixBytes;
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@ -753,7 +757,7 @@ var PredictorStream = (function predictorStream() {
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this.bufferLength += rowBytes;
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};
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return constructor;
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return PredictorStream;
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})();
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/**
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@ -763,7 +767,7 @@ var PredictorStream = (function predictorStream() {
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* a library to decode these images and the stream behaves like all the other
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* DecodeStreams.
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*/
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var JpegStream = (function jpegStream() {
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var JpegStream = (function JpegStreamClosure() {
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function isAdobeImage(bytes) {
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var maxBytesScanned = Math.max(bytes.length - 16, 1024);
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// Looking for APP14, 'Adobe'
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@ -794,7 +798,7 @@ var JpegStream = (function jpegStream() {
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return newBytes;
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}
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function constructor(bytes, dict, xref) {
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function JpegStream(bytes, dict, xref) {
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// TODO: per poppler, some images may have 'junk' before that
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// need to be removed
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this.dict = dict;
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@ -825,9 +829,9 @@ var JpegStream = (function jpegStream() {
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DecodeStream.call(this);
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}
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constructor.prototype = Object.create(DecodeStream.prototype);
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JpegStream.prototype = Object.create(DecodeStream.prototype);
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constructor.prototype.ensureBuffer = function jpegStreamEnsureBuffer(req) {
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JpegStream.prototype.ensureBuffer = function jpegStreamEnsureBuffer(req) {
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if (this.bufferLength)
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return;
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var jpegImage = new JpegImage();
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@ -839,18 +843,18 @@ var JpegStream = (function jpegStream() {
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this.buffer = data;
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this.bufferLength = data.length;
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};
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constructor.prototype.getIR = function jpegStreamGetIR() {
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JpegStream.prototype.getIR = function jpegStreamGetIR() {
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return this.src;
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};
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constructor.prototype.getChar = function jpegStreamGetChar() {
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JpegStream.prototype.getChar = function jpegStreamGetChar() {
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error('internal error: getChar is not valid on JpegStream');
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};
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return constructor;
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return JpegStream;
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})();
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var DecryptStream = (function decryptStream() {
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function constructor(str, decrypt) {
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var DecryptStream = (function DecryptStreamClosure() {
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function DecryptStream(str, decrypt) {
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this.str = str;
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this.dict = str.dict;
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this.decrypt = decrypt;
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@ -860,9 +864,9 @@ var DecryptStream = (function decryptStream() {
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var chunkSize = 512;
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constructor.prototype = Object.create(DecodeStream.prototype);
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DecryptStream.prototype = Object.create(DecodeStream.prototype);
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constructor.prototype.readBlock = function decryptStreamReadBlock() {
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DecryptStream.prototype.readBlock = function decryptStreamReadBlock() {
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var chunk = this.str.getBytes(chunkSize);
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if (!chunk || chunk.length == 0) {
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this.eof = true;
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@ -879,11 +883,11 @@ var DecryptStream = (function decryptStream() {
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this.bufferLength = bufferLength;
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};
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return constructor;
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return DecryptStream;
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})();
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var Ascii85Stream = (function ascii85Stream() {
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function constructor(str) {
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var Ascii85Stream = (function Ascii85StreamClosure() {
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function Ascii85Stream(str) {
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this.str = str;
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this.dict = str.dict;
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this.input = new Uint8Array(5);
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@ -891,9 +895,9 @@ var Ascii85Stream = (function ascii85Stream() {
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DecodeStream.call(this);
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}
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constructor.prototype = Object.create(DecodeStream.prototype);
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Ascii85Stream.prototype = Object.create(DecodeStream.prototype);
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constructor.prototype.readBlock = function ascii85StreamReadBlock() {
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Ascii85Stream.prototype.readBlock = function ascii85StreamReadBlock() {
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var tildaCode = '~'.charCodeAt(0);
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var zCode = 'z'.charCodeAt(0);
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var str = this.str;
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@ -948,11 +952,11 @@ var Ascii85Stream = (function ascii85Stream() {
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}
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};
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return constructor;
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return Ascii85Stream;
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})();
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var AsciiHexStream = (function asciiHexStream() {
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function constructor(str) {
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var AsciiHexStream = (function AsciiHexStreamClosure() {
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function AsciiHexStream(str) {
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this.str = str;
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this.dict = str.dict;
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@ -986,9 +990,9 @@ var AsciiHexStream = (function asciiHexStream() {
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102: 15
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};
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constructor.prototype = Object.create(DecodeStream.prototype);
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AsciiHexStream.prototype = Object.create(DecodeStream.prototype);
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constructor.prototype.readBlock = function asciiHexStreamReadBlock() {
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AsciiHexStream.prototype.readBlock = function asciiHexStreamReadBlock() {
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var gtCode = '>'.charCodeAt(0), bytes = this.str.getBytes(), c, n,
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decodeLength, buffer, bufferLength, i, length;
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@ -1018,10 +1022,10 @@ var AsciiHexStream = (function asciiHexStream() {
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this.eof = true;
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};
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return constructor;
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return AsciiHexStream;
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})();
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var CCITTFaxStream = (function ccittFaxStream() {
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var CCITTFaxStream = (function CCITTFaxStreamClosure() {
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var ccittEOL = -2;
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var twoDimPass = 0;
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@ -1449,7 +1453,7 @@ var CCITTFaxStream = (function ccittFaxStream() {
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[2, 2], [2, 2], [2, 2], [2, 2]
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];
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function constructor(str, params) {
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function CCITTFaxStream(str, params) {
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this.str = str;
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this.dict = str.dict;
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@ -1494,9 +1498,9 @@ var CCITTFaxStream = (function ccittFaxStream() {
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DecodeStream.call(this);
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}
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constructor.prototype = Object.create(DecodeStream.prototype);
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CCITTFaxStream.prototype = Object.create(DecodeStream.prototype);
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constructor.prototype.readBlock = function ccittFaxStreamReadBlock() {
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CCITTFaxStream.prototype.readBlock = function ccittFaxStreamReadBlock() {
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while (!this.eof) {
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var c = this.lookChar();
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this.buf = EOF;
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@ -1505,7 +1509,7 @@ var CCITTFaxStream = (function ccittFaxStream() {
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}
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};
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constructor.prototype.addPixels =
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CCITTFaxStream.prototype.addPixels =
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function ccittFaxStreamAddPixels(a1, blackPixels) {
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var codingLine = this.codingLine;
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var codingPos = this.codingPos;
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@ -1525,7 +1529,7 @@ var CCITTFaxStream = (function ccittFaxStream() {
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this.codingPos = codingPos;
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};
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constructor.prototype.addPixelsNeg =
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CCITTFaxStream.prototype.addPixelsNeg =
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function ccittFaxStreamAddPixelsNeg(a1, blackPixels) {
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var codingLine = this.codingLine;
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var codingPos = this.codingPos;
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@ -1554,7 +1558,7 @@ var CCITTFaxStream = (function ccittFaxStream() {
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this.codingPos = codingPos;
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};
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constructor.prototype.lookChar = function ccittFaxStreamLookChar() {
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CCITTFaxStream.prototype.lookChar = function ccittFaxStreamLookChar() {
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if (this.buf != EOF)
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return this.buf;
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@ -1873,7 +1877,9 @@ var CCITTFaxStream = (function ccittFaxStream() {
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return [false, 0, false];
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};
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constructor.prototype.getTwoDimCode = function ccittFaxStreamGetTwoDimCode() {
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CCITTFaxStream.prototype.getTwoDimCode =
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function ccittFaxStreamGetTwoDimCode() {
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var code = 0;
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var p;
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if (this.eoblock) {
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@ -1892,7 +1898,9 @@ var CCITTFaxStream = (function ccittFaxStream() {
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return EOF;
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};
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constructor.prototype.getWhiteCode = function ccittFaxStreamGetWhiteCode() {
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CCITTFaxStream.prototype.getWhiteCode =
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function ccittFaxStreamGetWhiteCode() {
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var code = 0;
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var p;
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var n;
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@ -1924,7 +1932,9 @@ var CCITTFaxStream = (function ccittFaxStream() {
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return 1;
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};
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constructor.prototype.getBlackCode = function ccittFaxStreamGetBlackCode() {
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CCITTFaxStream.prototype.getBlackCode =
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function ccittFaxStreamGetBlackCode() {
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var code, p;
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if (this.eoblock) {
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code = this.lookBits(13);
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@ -1959,7 +1969,7 @@ var CCITTFaxStream = (function ccittFaxStream() {
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return 1;
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};
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constructor.prototype.lookBits = function ccittFaxStreamLookBits(n) {
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CCITTFaxStream.prototype.lookBits = function ccittFaxStreamLookBits(n) {
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var c;
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while (this.inputBits < n) {
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if ((c = this.str.getByte()) == null) {
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@ -1974,16 +1984,16 @@ var CCITTFaxStream = (function ccittFaxStream() {
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return (this.inputBuf >> (this.inputBits - n)) & (0xFFFF >> (16 - n));
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};
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constructor.prototype.eatBits = function ccittFaxStreamEatBits(n) {
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CCITTFaxStream.prototype.eatBits = function ccittFaxStreamEatBits(n) {
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if ((this.inputBits -= n) < 0)
|
||||
this.inputBits = 0;
|
||||
};
|
||||
|
||||
return constructor;
|
||||
return CCITTFaxStream;
|
||||
})();
|
||||
|
||||
var LZWStream = (function lzwStream() {
|
||||
function constructor(str, earlyChange) {
|
||||
var LZWStream = (function LZWStreamClosure() {
|
||||
function LZWStream(str, earlyChange) {
|
||||
this.str = str;
|
||||
this.dict = str.dict;
|
||||
this.cachedData = 0;
|
||||
|
|
@ -2009,9 +2019,9 @@ var LZWStream = (function lzwStream() {
|
|||
DecodeStream.call(this);
|
||||
}
|
||||
|
||||
constructor.prototype = Object.create(DecodeStream.prototype);
|
||||
LZWStream.prototype = Object.create(DecodeStream.prototype);
|
||||
|
||||
constructor.prototype.readBits = function lzwStreamReadBits(n) {
|
||||
LZWStream.prototype.readBits = function lzwStreamReadBits(n) {
|
||||
var bitsCached = this.bitsCached;
|
||||
var cachedData = this.cachedData;
|
||||
while (bitsCached < n) {
|
||||
|
|
@ -2029,7 +2039,7 @@ var LZWStream = (function lzwStream() {
|
|||
return (cachedData >>> bitsCached) & ((1 << n) - 1);
|
||||
};
|
||||
|
||||
constructor.prototype.readBlock = function lzwStreamReadBlock() {
|
||||
LZWStream.prototype.readBlock = function lzwStreamReadBlock() {
|
||||
var blockSize = 512;
|
||||
var estimatedDecodedSize = blockSize * 2, decodedSizeDelta = blockSize;
|
||||
var i, j, q;
|
||||
|
|
@ -2108,6 +2118,6 @@ var LZWStream = (function lzwStream() {
|
|||
this.bufferLength = currentBufferLength;
|
||||
};
|
||||
|
||||
return constructor;
|
||||
return LZWStream;
|
||||
})();
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue