psd
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A general purpose Photoshop file parser.
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class="file_name">resource_section.coffee</span></a><a href="../../lib/psd/resources/layer_comps.coffee.html" class="source "><span class="base_path">lib / psd / resources / </span><span class="file_name">layer_comps.coffee</span></a><a href="../../lib/psd/resources.coffee.html" class="source "><span class="base_path">lib / psd / </span><span class="file_name">resources.coffee</span></a><a href="../../lib/psd/util.coffee.html" class="source selected"><span class="base_path">lib / psd / </span><span class="file_name">util.coffee</span></a><a href="../../lib/psd.coffee.html" class="source "><span class="base_path">lib / </span><span class="file_name">psd.coffee</span></a><a href="../../shims/init.coffee.html" class="source "><span class="base_path">shims / </span><span class="file_name">init.coffee</span></a><a href="../../shims/png.coffee.html" class="source "><span class="base_path">shims / </span><span class="file_name">png.coffee</span></a></div></div></div><table cellpadding="0" cellspacing="0"><thead><tr><th class="docs"><h1>util.coffee</h1><div class="filepath">lib/psd/</div></th><th class="code"></th></tr></thead><tbody><tr id="section-1"><td class="docs"><div class="pilwrap"><a href="#section-1" class="pilcrow">¶</a></div>
</td><td class="code"><div class="highlight"><pre><span class="nv">module.exports =</span>
<span class="nv">pad2: </span><span class="nf">(i) -></span> <span class="p">(</span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> <span class="o">&</span> <span class="o">~</span><span class="mh">0x01</span>
<span class="nv">pad4: </span><span class="nf">(i) -></span> <span class="p">((</span><span class="nx">i</span> <span class="o">+</span> <span class="mi">4</span><span class="p">)</span> <span class="o">&</span> <span class="o">~</span><span class="mh">0x03</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span>
<span class="nv">getUnicodeCharacter: </span><span class="nf">(cp) -></span>
<span class="k">if</span> <span class="nx">cp</span> <span class="o">>=</span> <span class="mi">0</span> <span class="o">and</span> <span class="nx">cp</span> <span class="o"><=</span> <span class="mh">0xD7FF</span> <span class="o">or</span> <span class="nx">cp</span> <span class="o">>=</span> <span class="mh">0xE000</span> <span class="o">and</span> <span class="nx">cp</span> <span class="o"><=</span> <span class="mh">0xFFFF</span>
<span class="k">return</span> <span class="nb">String</span><span class="p">.</span><span class="nx">fromCharCode</span><span class="p">(</span><span class="nx">cp</span><span class="p">)</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">cp</span> <span class="o">>=</span> <span class="mh">0x10000</span> <span class="o">and</span> <span class="nx">cp</span> <span class="o"><=</span> <span class="mh">0x10FFFF</span></pre></div></td></tr><tr id="section-2"><td class="docs"><div class="pilwrap"><a href="#section-2" class="pilcrow">¶</a></div><p>we substract 0x10000 from cp to get a 20-bits number
in the range 0..0xFFFF</p>
</td><td class="code"><div class="highlight"><pre> <span class="nx">cp</span> <span class="o">-=</span> <span class="mh">0x10000</span></pre></div></td></tr><tr id="section-3"><td class="docs"><div class="pilwrap"><a href="#section-3" class="pilcrow">¶</a></div><p>we add 0xD800 to the number formed by the first 10 bits
to give the first byte</p>
</td><td class="code"><div class="highlight"><pre> <span class="nv">first = </span><span class="p">((</span><span class="mh">0xffc00</span> <span class="o">&</span> <span class="nx">cp</span><span class="p">)</span> <span class="o">>></span> <span class="mi">10</span><span class="p">)</span> <span class="o">+</span> <span class="mh">0xD800</span></pre></div></td></tr><tr id="section-4"><td class="docs"><div class="pilwrap"><a href="#section-4" class="pilcrow">¶</a></div><p>we add 0xDC00 to the number formed by the low 10 bits
to give the second byte</p>
</td><td class="code"><div class="highlight"><pre> <span class="nv">second = </span><span class="p">(</span><span class="mh">0x3ff</span> <span class="o">&</span> <span class="nx">cp</span><span class="p">)</span> <span class="o">+</span> <span class="mh">0xDC00</span>
<span class="nb">String</span><span class="p">.</span><span class="nx">fromCharCode</span><span class="p">(</span><span class="nx">first</span><span class="p">)</span> <span class="o">+</span> <span class="nb">String</span><span class="p">.</span><span class="nx">fromCharCode</span><span class="p">(</span><span class="nx">second</span><span class="p">)</span>
<span class="nv">clamp: </span><span class="nf">(num, min, max) -></span>
<span class="nb">Math</span><span class="p">.</span><span class="nx">min</span><span class="p">(</span><span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nx">num</span><span class="p">,</span> <span class="nx">min</span><span class="p">),</span> <span class="nx">max</span><span class="p">)</span>
</pre></div></td></tr></tbody></table><div id="generated">generated Tue May 12 2015 11:08:15 GMT-0400 (EDT) </div></div></body></html>