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<!DOCTYPE html> <html> <head> <title>psddescriptor.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To … <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="blackwhite.html"> blackwhite.coffee </a> <a class="source" href="brightnesscontrast.html"> brightnesscontrast.coffee </a> <a class="source" href="colorbalance.html"> colorbalance.coffee </a> <a class="source" href="curves.html"> curves.coffee </a> <a class="source" href="exposure.html"> exposure.coffee </a> <a class="source" href="gradient.html"> gradient.coffee </a> <a class="source" href="huesaturation.html"> huesaturation.coffee </a> <a class="source" href="invert.html"> invert.coffee </a> <a class="source" href="layereffect.html"> layereffect.coffee </a> <a class="source" href="levels.html"> levels.coffee </a> <a class="source" href="pattern.html"> pattern.coffee </a> <a class="source" href="photofilter.html"> photofilter.coffee </a> <a class="source" href="posterize.html"> posterize.coffee </a> <a class="source" href="selectivecolor.html"> selectivecolor.coffee </a> <a class="source" href="solidcolor.html"> solidcolor.coffee </a> <a class="source" href="threshold.html"> threshold.coffee </a> <a class="source" href="typetool.html"> typetool.coffee </a> <a class="source" href="vibrance.html"> vibrance.coffee </a> <a class="source" href="log.html"> log.coffee </a> <a class="source" href="psd.html"> psd.coffee </a> <a class="source" href="psdassert.html"> psdassert.coffee </a> <a class="source" href="psdchannelimage.html"> psdchannelimage.coffee </a> <a class="source" href="psdcolor.html"> psdcolor.coffee </a> <a class="source" href="psddescriptor.html"> psddescriptor.coffee </a> <a class="source" href="psdfile.html"> psdfile.coffee </a> <a class="source" href="psdheader.html"> psdheader.coffee </a> <a class="source" href="psdimage.html"> psdimage.coffee </a> <a class="source" href="psdlayer.html"> psdlayer.coffee </a> <a class="source" href="psdlayermask.html"> psdlayermask.coffee </a> <a class="source" href="psdresource.html"> psdresource.coffee </a> <a class="source" href="util.html"> util.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> psddescriptor.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-1">¶</a> </div> </td> <td class="code"> <div class="highlight"><pre><span class="k">class</span> <span class="nx">PSDDescriptor</span>
<span class="nv">constructor: </span><span class="nf">(@file) -></span></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-2">¶</a> </div> <p>Main entry point for parsing a descriptor</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">parse: </span><span class="o">-></span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span> <span class="s2">"Parsing descriptor..."</span>
<span class="nv">data = </span><span class="p">{}</span>
<span class="nv">data.class = </span><span class="nx">@parseClass</span><span class="p">()</span>
<span class="nv">numItems = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span> <span class="s2">"Descriptor contains #{numItems} items"</span>
<span class="k">for</span> <span class="nx">i</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="nx">numItems</span><span class="p">]</span>
<span class="nv">item = </span><span class="nx">@parseKeyItem</span><span class="p">()</span>
<span class="nx">data</span><span class="p">[</span><span class="nx">item</span><span class="p">.</span><span class="nx">id</span><span class="p">]</span> <span class="o">=</span> <span class="nx">item</span><span class="p">.</span><span class="nx">value</span>
<span class="nx">data</span>
<span class="nv">parseID: </span><span class="o">-></span>
<span class="nv">len = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="k">if</span> <span class="nx">len</span> <span class="o">is</span> <span class="mi">0</span>
<span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="k">else</span>
<span class="nx">@file</span><span class="p">.</span><span class="nx">readString</span><span class="p">(</span><span class="nx">len</span><span class="p">)</span>
<span class="nv">parseClass: </span><span class="o">-></span>
<span class="nv">name: </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readUnicodeString</span><span class="p">()</span>
<span class="nv">id: </span><span class="nx">@parseID</span><span class="p">()</span>
<span class="nv">parseKeyItem: </span><span class="o">-></span>
<span class="nv">id: </span><span class="nx">@parseID</span><span class="p">()</span>
<span class="nv">value: </span><span class="nx">@parseItem</span><span class="p">()</span>
<span class="nv">parseItem: </span><span class="o">-></span>
<span class="nv">type = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readString</span><span class="p">(</span><span class="mi">4</span><span class="p">)</span>
<span class="nx">Log</span><span class="p">.</span><span class="nx">debug</span> <span class="s2">"Found descriptor type: #{type}"</span>
<span class="nv">value = </span><span class="k">switch</span> <span class="nx">type</span>
<span class="k">when</span> <span class="s1">'bool'</span> <span class="k">then</span> <span class="nx">@parseBoolean</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'type'</span><span class="p">,</span> <span class="s1">'GlbC'</span> <span class="k">then</span> <span class="nx">@parseClass</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'Objc'</span><span class="p">,</span> <span class="s1">'GlbO'</span> <span class="k">then</span> <span class="nx">@parse</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'doub'</span> <span class="k">then</span> <span class="nx">@parseDouble</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'enum'</span> <span class="k">then</span> <span class="nx">@parseEnum</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'alis'</span> <span class="k">then</span> <span class="nx">@parseAlias</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'Pth '</span> <span class="k">then</span> <span class="nx">@parseFilePath</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'long'</span> <span class="k">then</span> <span class="nx">@parseInteger</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'comp'</span> <span class="k">then</span> <span class="nx">@parseLargeInteger</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'VlLs'</span> <span class="k">then</span> <span class="nx">@parseList</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'ObAr'</span> <span class="k">then</span> <span class="nx">@parseObjectArray</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'tdta'</span> <span class="k">then</span> <span class="nx">@parseRawData</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'obj '</span> <span class="k">then</span> <span class="nx">@parseReference</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'TEXT'</span> <span class="k">then</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readUnicodeString</span><span class="p">()</span>
<span class="k">when</span> <span class="s1">'UntF'</span> <span class="k">then</span> <span class="nx">@parseUnitDouble</span><span class="p">()</span>
<span class="nx">value</span>
<span class="nv">parseBoolean: </span><span class="o">-></span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readBoolean</span><span class="p">()</span>
<span class="nv">parseDouble: </span><span class="o">-></span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readDouble</span><span class="p">()</span>
<span class="nv">parseInteger: </span><span class="o">-></span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="nv">parseLargeInteger: </span><span class="o">-></span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readLongLong</span><span class="p">()</span>
<span class="nv">parseIdentifier: </span><span class="o">-></span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="nv">parseIndex: </span><span class="o">-></span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="nv">parseOffset: </span><span class="o">-></span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="nv">parseProperty: </span><span class="o">-></span> <span class="nx">@parseID</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-3">¶</a> </div> <p>We discard the first ID because it's the same as the key
parsed from the Key/Item.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">parseEnum: </span><span class="o">-></span>
<span class="nx">@parseID</span><span class="p">()</span>
<span class="nx">@parseID</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-4">¶</a> </div> <p>File Alias
This data is opaque and unique to Mac OS</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">parseAlias: </span><span class="o">-></span>
<span class="nv">len = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="nx">@file</span><span class="p">.</span><span class="nx">read</span><span class="p">(</span><span class="nx">len</span><span class="p">)</span>
<span class="nv">parseFilePath: </span><span class="o">-></span>
<span class="nv">len = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-5">¶</a> </div> <p>Little-endian?!?</p> </td> <td class="code"> <div class="highlight"><pre> <span class="p">[</span>
<span class="nx">sig</span><span class="p">,</span>
<span class="nx">pathSize</span><span class="p">,</span>
<span class="nx">numChars</span>
<span class="p">]</span> <span class="o">=</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readf</span><span class="p">(</span><span class="s2">"<4s2i"</span><span class="p">)</span>
<span class="nv">charBytes = </span><span class="nx">numChars</span> <span class="o">*</span> <span class="mi">2</span>
<span class="nv">path = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">read</span><span class="p">(</span><span class="nx">charBytes</span><span class="p">)</span>
<span class="nv">sig: </span><span class="nx">sig</span><span class="p">,</span> <span class="nv">path: </span><span class="nx">path</span>
<span class="nv">parseList: </span><span class="o">-></span>
<span class="nv">numItems = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="nv">items = </span><span class="p">[]</span>
<span class="nx">items</span><span class="p">.</span><span class="nx">push</span> <span class="nx">@parseItem</span><span class="p">()</span> <span class="k">for</span> <span class="nx">i</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="nx">numItems</span><span class="p">]</span>
<span class="nx">items</span>
<span class="nv">parseObjectArray: </span><span class="o">-></span>
<span class="nv">numItems = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="nv">klass = </span><span class="nx">@parseClass</span><span class="p">()</span>
<span class="nv">itemsInObj = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="nv">obj = </span><span class="p">[]</span>
<span class="k">for</span> <span class="nx">i</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="nx">numItems</span><span class="p">]</span>
<span class="nv">item = </span><span class="p">[]</span>
<span class="k">for</span> <span class="nx">j</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="nx">itemsInObj</span><span class="p">]</span>
<span class="nx">item</span><span class="p">.</span><span class="nx">push</span> <span class="nx">@parseObjectArray</span><span class="p">()</span>
<span class="nx">obj</span><span class="p">.</span><span class="nx">push</span> <span class="nx">item</span>
<span class="nx">obj</span>
<span class="nv">parseObjectArray: </span><span class="o">-></span>
<span class="nv">id = </span><span class="nx">@parseID</span><span class="p">()</span>
<span class="nv">type = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readString</span><span class="p">(</span><span class="mi">4</span><span class="p">)</span>
<span class="nv">unitID = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readString</span><span class="p">()</span>
<span class="nv">num = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="nv">values = </span><span class="p">[]</span>
<span class="nx">values</span><span class="p">.</span><span class="nx">push</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readDouble</span><span class="p">()</span> <span class="k">for</span> <span class="nx">i</span> <span class="k">in</span> <span class="p">[</span><span class="mi">0</span><span class="p">...</span><span class="nx">num</span><span class="p">]</span>
<span class="nx">values</span>
<span class="nv">parseRawData: </span><span class="o">-></span>
<span class="nv">len = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readInt</span><span class="p">()</span>
<span class="nx">@file</span><span class="p">.</span><span class="nx">read</span><span class="p">(</span><span class="nx">len</span><span class="p">)</span>
<span class="nv">parseReference: </span><span class="o">-></span>
<span class="nv">form = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readString</span><span class="p">(</span><span class="mi">4</span><span class="p">)</span>
<span class="nv">klass = </span><span class="nx">@parseClass</span><span class="p">()</span>
<span class="nv">value = </span><span class="k">switch</span> <span class="nx">form</span>
<span class="k">when</span> <span class="s2">"Clss"</span> <span class="k">then</span> <span class="kc">null</span>
<span class="k">when</span> <span class="s2">"Enmr"</span> <span class="k">then</span> <span class="nx">@parseEnum</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"Idnt"</span> <span class="k">then</span> <span class="nx">@parseIdentifier</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"indx"</span> <span class="k">then</span> <span class="nx">@parseIndex</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"name"</span> <span class="k">then</span> <span class="nx">@file</span><span class="p">.</span><span class="nx">readUnicodeString</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"rele"</span> <span class="k">then</span> <span class="nx">@parseOffset</span><span class="p">()</span>
<span class="k">when</span> <span class="s2">"prop"</span> <span class="k">then</span> <span class="nx">@parseProperty</span><span class="p">()</span>
<span class="nx">value</span>
<span class="nv">parseUnitDouble: </span><span class="o">-></span>
<span class="nv">unitID = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">parseString</span><span class="p">(</span><span class="mi">4</span><span class="p">)</span>
<span class="nv">unit = </span><span class="k">switch</span> <span class="nx">unitID</span>
<span class="k">when</span> <span class="s2">"#Ang"</span> <span class="k">then</span> <span class="s2">"Angle"</span>
<span class="k">when</span> <span class="s2">"#Rsl"</span> <span class="k">then</span> <span class="s2">"Density"</span>
<span class="k">when</span> <span class="s2">"#Rlt"</span> <span class="k">then</span> <span class="s2">"Distance"</span>
<span class="k">when</span> <span class="s2">"#Nne"</span> <span class="k">then</span> <span class="s2">"None"</span>
<span class="k">when</span> <span class="s2">"#Prc"</span> <span class="k">then</span> <span class="s2">"Percent"</span>
<span class="k">when</span> <span class="s2">"#Pxl"</span> <span class="k">then</span> <span class="s2">"Pixels"</span>
<span class="k">when</span> <span class="s2">"#Mlm"</span> <span class="k">then</span> <span class="s2">"Millimeters"</span>
<span class="k">when</span> <span class="s2">"#Pnt"</span> <span class="k">then</span> <span class="s2">"Points"</span>
<span class="nv">value = </span><span class="nx">@file</span><span class="p">.</span><span class="nx">readDouble</span><span class="p">()</span>
<span class="nv">id: </span><span class="nx">unitID</span><span class="p">,</span> <span class="nv">unit: </span><span class="nx">unit</span><span class="p">,</span> <span class="nv">value: </span><span class="nx">value</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>
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