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430 lines
12 KiB
430 lines
12 KiB
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<title>Code coverage report for lib\parser-async.js</title>
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<div class="header high">
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<h1>Code coverage report for <span class="entity">lib\parser-async.js</span></h1>
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<h2>
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Statements: <span class="metric">90.7% <small>(39 / 43)</small></span>
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Branches: <span class="metric">83.33% <small>(10 / 12)</small></span>
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Functions: <span class="metric">100% <small>(6 / 6)</small></span>
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Lines: <span class="metric">90.7% <small>(39 / 43)</small></span>
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Ignored: <span class="metric"><span class="ignore-none">none</span></span>
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</h2>
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<div class="path"><a href="../index.html">All files</a> » <a href="index.html">lib/</a> » parser-async.js</div>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">// Copyright (c) 2012 Kuba Niegowski
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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'use strict';
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var util = require('util'),
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zlib = require('zlib'),
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ChunkStream = require('./chunkstream'),
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FilterAsync = require('./filter-async'),
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Parser = require('./parser'),
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bitmapper = require('./bitmapper');
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var ParserAsync = module.exports = function(options) {
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ChunkStream.call(this);
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this._parser = new Parser(options, {
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read: this.read.bind(this),
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error: this._handleError.bind(this),
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metadata: this.emit.bind(this, "metadata"),
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gamma: this.emit.bind(this, "gamma"),
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finished: this._finished.bind(this),
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inflateData: this._inflateData.bind(this),
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createData: this._createData.bind(this)
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});
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this._options = options;
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this.writable = true;
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this._parser.start();
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};
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util.inherits(ParserAsync, ChunkStream);
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ParserAsync.prototype._handleError = function(err) {
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this.emit('error', err);
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this.writable = false;
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this.destroy();
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<span class="missing-if-branch" title="if path not taken" >I</span>if (this._inflate && this._inflate.destroy) {
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<span class="cstat-no" title="statement not covered" > this._inflate.destroy();</span>
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}
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this.errord = true;
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};
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ParserAsync.prototype._inflateData = function(data) {
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if (!this._inflate) {
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this._inflate = zlib.createInflate();
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this._inflate.on('error', this.emit.bind(this, 'error'));
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this._filter.on('complete', this._complete.bind(this));
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this._inflate.pipe(this._filter);
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}
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this._inflate.write(data);
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};
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ParserAsync.prototype._createData = function(width, height, bpp, depth, interlace) {
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this._bpp = bpp;
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this._depth = depth;
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this._interlace = interlace;
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this._filter = new FilterAsync(
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width, height,
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bpp,
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depth,
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interlace,
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this._options
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);
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};
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ParserAsync.prototype._finished = function(data) {
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<span class="missing-if-branch" title="if path not taken" >I</span>if (this.errord) {
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<span class="cstat-no" title="statement not covered" > return;</span>
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}
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if (!this._inflate) {
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this.emit('error', 'No Inflate block');
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} else {
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// no more data to inflate
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this._inflate.end();
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}
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this.destroySoon();
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};
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ParserAsync.prototype._complete = function(data, width, height) {
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if (this.errord) {
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return;
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}
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try {
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data = bitmapper.dataToBitMap(data, width, height,
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this._bpp,
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this._depth,
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this._interlace);
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data = this._parser.reverseFiltered(data, this._depth, width, height);
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}
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catch(e) {
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<span class="cstat-no" title="statement not covered" > this._handleError();</span>
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<span class="cstat-no" title="statement not covered" > return;</span>
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}
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this.emit('parsed', data);
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};
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</pre></td></tr>
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</table></pre>
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