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<h1>Source code for PIL.ImtImagePlugin</h1><div class="highlight"><pre>
<span></span><span class="c1">#</span>
<span class="c1"># The Python Imaging Library.</span>
<span class="c1"># $Id$</span>
<span class="c1">#</span>
<span class="c1"># IM Tools support for PIL</span>
<span class="c1">#</span>
<span class="c1"># history:</span>
<span class="c1"># 1996-05-27 fl Created (read 8-bit images only)</span>
<span class="c1"># 2001-02-17 fl Use 're' instead of 'regex' (Python 2.1) (0.2)</span>
<span class="c1">#</span>
<span class="c1"># Copyright (c) Secret Labs AB 1997-2001.</span>
<span class="c1"># Copyright (c) Fredrik Lundh 1996-2001.</span>
<span class="c1">#</span>
<span class="c1"># See the README file for information on usage and redistribution.</span>
<span class="c1">#</span>
<span class="kn">import</span> <span class="nn">re</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="k">import</span> <span class="n">Image</span><span class="p">,</span> <span class="n">ImageFile</span>
<span class="n">__version__</span> <span class="o">=</span> <span class="s2">"0.2"</span>
<span class="c1">#</span>
<span class="c1"># --------------------------------------------------------------------</span>
<span class="n">field</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="sa">br</span><span class="s2">"([a-z]*) ([^ \r\n]*)"</span><span class="p">)</span>
<span class="c1">##</span>
<span class="c1"># Image plugin for IM Tools images.</span>
<div class="viewcode-block" id="ImtImageFile"><a class="viewcode-back" href="../../reference/plugins.html#PIL.ImtImagePlugin.ImtImageFile">[docs]</a><span class="k">class</span> <span class="nc">ImtImageFile</span><span class="p">(</span><span class="n">ImageFile</span><span class="o">.</span><span class="n">ImageFile</span><span class="p">):</span>
<span class="nb">format</span> <span class="o">=</span> <span class="s2">"IMT"</span>
<span class="n">format_description</span> <span class="o">=</span> <span class="s2">"IM Tools"</span>
<span class="k">def</span> <span class="nf">_open</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># Quick rejection: if there's not a LF among the first</span>
<span class="c1"># 100 bytes, this is (probably) not a text header.</span>
<span class="k">if</span> <span class="sa">b</span><span class="s2">"</span><span class="se">\n</span><span class="s2">"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">fp</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="mi">100</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">SyntaxError</span><span class="p">(</span><span class="s2">"not an IM file"</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fp</span><span class="o">.</span><span class="n">seek</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="n">xsize</span> <span class="o">=</span> <span class="n">ysize</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">while</span> <span class="kc">True</span><span class="p">:</span>
<span class="n">s</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">fp</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">s</span><span class="p">:</span>
<span class="k">break</span>
<span class="k">if</span> <span class="n">s</span> <span class="o">==</span> <span class="sa">b</span><span class="s1">'</span><span class="se">\x0C</span><span class="s1">'</span><span class="p">:</span>
<span class="c1"># image data begins</span>
<span class="bp">self</span><span class="o">.</span><span class="n">tile</span> <span class="o">=</span> <span class="p">[(</span><span class="s2">"raw"</span><span class="p">,</span> <span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span><span class="o">+</span><span class="bp">self</span><span class="o">.</span><span class="n">size</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fp</span><span class="o">.</span><span class="n">tell</span><span class="p">(),</span>
<span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">mode</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">))]</span>
<span class="k">break</span>
<span class="k">else</span><span class="p">:</span>
<span class="c1"># read key/value pair</span>
<span class="c1"># FIXME: dangerous, may read whole file</span>
<span class="n">s</span> <span class="o">=</span> <span class="n">s</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">fp</span><span class="o">.</span><span class="n">readline</span><span class="p">()</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">s</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">s</span><span class="p">)</span> <span class="o">></span> <span class="mi">100</span><span class="p">:</span>
<span class="k">break</span>
<span class="k">if</span> <span class="n">s</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="nb">ord</span><span class="p">(</span><span class="sa">b</span><span class="s2">"*"</span><span class="p">):</span>
<span class="k">continue</span> <span class="c1"># comment</span>
<span class="n">m</span> <span class="o">=</span> <span class="n">field</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="n">s</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">m</span><span class="p">:</span>
<span class="k">break</span>
<span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="o">=</span> <span class="n">m</span><span class="o">.</span><span class="n">group</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">)</span>
<span class="k">if</span> <span class="n">k</span> <span class="o">==</span> <span class="s2">"width"</span><span class="p">:</span>
<span class="n">xsize</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">v</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_size</span> <span class="o">=</span> <span class="n">xsize</span><span class="p">,</span> <span class="n">ysize</span>
<span class="k">elif</span> <span class="n">k</span> <span class="o">==</span> <span class="s2">"height"</span><span class="p">:</span>
<span class="n">ysize</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">v</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_size</span> <span class="o">=</span> <span class="n">xsize</span><span class="p">,</span> <span class="n">ysize</span>
<span class="k">elif</span> <span class="n">k</span> <span class="o">==</span> <span class="s2">"pixel"</span> <span class="ow">and</span> <span class="n">v</span> <span class="o">==</span> <span class="s2">"n8"</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">mode</span> <span class="o">=</span> <span class="s2">"L"</span></div>
<span class="c1">#</span>
<span class="c1"># --------------------------------------------------------------------</span>
<span class="n">Image</span><span class="o">.</span><span class="n">register_open</span><span class="p">(</span><span class="n">ImtImageFile</span><span class="o">.</span><span class="n">format</span><span class="p">,</span> <span class="n">ImtImageFile</span><span class="p">)</span>
<span class="c1">#</span>
<span class="c1"># no extension registered (".im" is simply too common)</span>
</pre></div>
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