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<h1>Source code for markdownx.utils</h1><div class="highlight"><pre>
<span></span><span class="kn">from</span> <span class="nn">markdown</span> <span class="k">import</span> <span class="n">markdown</span>
<span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">Image</span>
<span class="kn">from</span> <span class="nn">.settings</span> <span class="k">import</span> <span class="p">(</span>
<span class="n">MARKDOWNX_MARKDOWN_EXTENSIONS</span><span class="p">,</span>
<span class="n">MARKDOWNX_MARKDOWN_EXTENSION_CONFIGS</span>
<span class="p">)</span>
<div class="viewcode-block" id="markdownify"><a class="viewcode-back" href="../../markdownx/docs/utilities.html#markdownx.utils.markdownify">[docs]</a><span class="k">def</span> <span class="nf">markdownify</span><span class="p">(</span><span class="n">content</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Trans-compiles Markdown text to HTML.</span>
<span class="sd"> :param content: Markdown text.</span>
<span class="sd"> :type content: str</span>
<span class="sd"> :return: HTML encoded text.</span>
<span class="sd"> :rtype: str</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">md</span> <span class="o">=</span> <span class="n">markdown</span><span class="p">(</span>
<span class="n">text</span><span class="o">=</span><span class="n">content</span><span class="p">,</span>
<span class="n">extensions</span><span class="o">=</span><span class="n">MARKDOWNX_MARKDOWN_EXTENSIONS</span><span class="p">,</span>
<span class="n">extension_configs</span><span class="o">=</span><span class="n">MARKDOWNX_MARKDOWN_EXTENSION_CONFIGS</span>
<span class="p">)</span>
<span class="k">return</span> <span class="n">md</span></div>
<span class="k">def</span> <span class="nf">_crop</span><span class="p">(</span><span class="n">im</span><span class="p">,</span> <span class="n">target_x</span><span class="p">,</span> <span class="n">target_y</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Crops the image to the given specifications.</span>
<span class="sd"> :param im: Instance of the image.</span>
<span class="sd"> :type im: PIL Image</span>
<span class="sd"> :param target_x: New x-axis.</span>
<span class="sd"> :type target_x: int</span>
<span class="sd"> :param target_y: New y-axis</span>
<span class="sd"> :type target_y: int</span>
<span class="sd"> :return: Cropped image.</span>
<span class="sd"> :rtype: PIL.Image</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="c1"># Use integer values now.</span>
<span class="n">source_x</span><span class="p">,</span> <span class="n">source_y</span> <span class="o">=</span> <span class="n">im</span><span class="o">.</span><span class="n">size</span>
<span class="c1"># Difference between new image size and requested size.</span>
<span class="n">diff_x</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">source_x</span> <span class="o">-</span> <span class="nb">min</span><span class="p">(</span><span class="n">source_x</span><span class="p">,</span> <span class="n">target_x</span><span class="p">))</span>
<span class="n">diff_y</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">source_y</span> <span class="o">-</span> <span class="nb">min</span><span class="p">(</span><span class="n">source_y</span><span class="p">,</span> <span class="n">target_y</span><span class="p">))</span>
<span class="k">if</span> <span class="n">diff_x</span> <span class="ow">or</span> <span class="n">diff_y</span><span class="p">:</span>
<span class="c1"># Center cropping (default).</span>
<span class="n">halfdiff_x</span><span class="p">,</span> <span class="n">halfdiff_y</span> <span class="o">=</span> <span class="n">diff_x</span> <span class="o">//</span> <span class="mi">2</span><span class="p">,</span> <span class="n">diff_y</span> <span class="o">//</span> <span class="mi">2</span>
<span class="n">box</span> <span class="o">=</span> <span class="p">[</span>
<span class="n">halfdiff_x</span><span class="p">,</span>
<span class="n">halfdiff_y</span><span class="p">,</span>
<span class="nb">min</span><span class="p">(</span><span class="n">source_x</span><span class="p">,</span> <span class="nb">int</span><span class="p">(</span><span class="n">target_x</span><span class="p">)</span> <span class="o">+</span> <span class="n">halfdiff_x</span><span class="p">),</span>
<span class="nb">min</span><span class="p">(</span><span class="n">source_y</span><span class="p">,</span> <span class="nb">int</span><span class="p">(</span><span class="n">target_y</span><span class="p">)</span> <span class="o">+</span> <span class="n">halfdiff_y</span><span class="p">)</span>
<span class="p">]</span>
<span class="c1"># Finally, crop the image!</span>
<span class="n">im</span> <span class="o">=</span> <span class="n">im</span><span class="o">.</span><span class="n">crop</span><span class="p">(</span><span class="n">box</span><span class="p">)</span>
<span class="k">return</span> <span class="n">im</span>
<span class="k">def</span> <span class="nf">_scale</span><span class="p">(</span><span class="n">im</span><span class="p">,</span> <span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Scales the image to the given specifications.</span>
<span class="sd"> :param im: Instance of the image.</span>
<span class="sd"> :type im: PIL Image</span>
<span class="sd"> :param x: x-axis size.</span>
<span class="sd"> :type x: int</span>
<span class="sd"> :param y: y-axis size.</span>
<span class="sd"> :type y: int</span>
<span class="sd"> :return: Scaled image, re-sampled with anti-aliasing filter.</span>
<span class="sd"> :rtype: Image</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">im</span> <span class="o">=</span> <span class="n">im</span><span class="o">.</span><span class="n">resize</span><span class="p">(</span>
<span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="n">x</span><span class="p">),</span> <span class="nb">int</span><span class="p">(</span><span class="n">y</span><span class="p">)),</span>
<span class="n">resample</span><span class="o">=</span><span class="n">Image</span><span class="o">.</span><span class="n">ANTIALIAS</span>
<span class="p">)</span>
<span class="k">return</span> <span class="n">im</span>
<div class="viewcode-block" id="scale_and_crop"><a class="viewcode-back" href="../../markdownx/docs/utilities.html#markdownx.utils.scale_and_crop">[docs]</a><span class="k">def</span> <span class="nf">scale_and_crop</span><span class="p">(</span><span class="n">image</span><span class="p">,</span> <span class="n">size</span><span class="p">,</span> <span class="n">crop</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">upscale</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">quality</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Modifies raster graphic images to the specifications.</span>
<span class="sd"> :param image: Raster graphic image.</span>
<span class="sd"> :type image: BytesIO</span>
<span class="sd"> :param size: New size.</span>
<span class="sd"> :type size: int</span>
<span class="sd"> :param crop: Perform cropping or not.</span>
<span class="sd"> :type crop: bool</span>
<span class="sd"> :param upscale: Whether or not to upscale the image.</span>
<span class="sd"> :type upscale: bool</span>
<span class="sd"> :param quality: Quality of the new image in DPI.</span>
<span class="sd"> :type quality: int</span>
<span class="sd"> :return: Raster graphic image modified to the given specifications.</span>
<span class="sd"> :rtype: BytesIO</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="c1"># Open image and store format/metadata.</span>
<span class="n">image</span><span class="o">.</span><span class="n">open</span><span class="p">()</span>
<span class="n">im</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="n">image</span><span class="p">)</span>
<span class="n">im_format</span><span class="p">,</span> <span class="n">im_info</span> <span class="o">=</span> <span class="n">im</span><span class="o">.</span><span class="n">format</span><span class="p">,</span> <span class="n">im</span><span class="o">.</span><span class="n">info</span>
<span class="k">if</span> <span class="n">quality</span><span class="p">:</span>
<span class="n">im_info</span><span class="p">[</span><span class="s1">&#39;quality&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">quality</span>
<span class="c1"># Force PIL to load image data.</span>
<span class="n">im</span><span class="o">.</span><span class="n">load</span><span class="p">()</span>
<span class="n">source_x</span><span class="p">,</span> <span class="n">source_y</span> <span class="o">=</span> <span class="nb">map</span><span class="p">(</span><span class="nb">float</span><span class="p">,</span> <span class="n">im</span><span class="o">.</span><span class="n">size</span><span class="p">)</span>
<span class="n">target_x</span><span class="p">,</span> <span class="n">target_y</span> <span class="o">=</span> <span class="nb">map</span><span class="p">(</span><span class="nb">float</span><span class="p">,</span> <span class="n">size</span><span class="p">)</span>
<span class="k">if</span> <span class="n">crop</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">target_x</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">target_y</span><span class="p">:</span>
<span class="n">scale</span> <span class="o">=</span> <span class="nb">max</span><span class="p">(</span><span class="n">target_x</span> <span class="o">/</span> <span class="n">source_x</span><span class="p">,</span> <span class="n">target_y</span> <span class="o">/</span> <span class="n">source_y</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">scale</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="n">target_x</span> <span class="o">/</span> <span class="n">source_x</span><span class="p">,</span> <span class="n">target_y</span> <span class="o">/</span> <span class="n">source_y</span><span class="p">)</span>
<span class="c1"># Handle one-dimensional targets.</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">target_x</span><span class="p">:</span>
<span class="n">target_x</span> <span class="o">=</span> <span class="n">source_x</span> <span class="o">*</span> <span class="n">scale</span>
<span class="k">elif</span> <span class="ow">not</span> <span class="n">target_y</span><span class="p">:</span>
<span class="n">target_y</span> <span class="o">=</span> <span class="n">source_y</span> <span class="o">*</span> <span class="n">scale</span>
<span class="k">if</span> <span class="n">scale</span> <span class="o">&lt;</span> <span class="mf">1.0</span> <span class="ow">or</span> <span class="p">(</span><span class="n">scale</span> <span class="o">&gt;</span> <span class="mf">1.0</span> <span class="ow">and</span> <span class="n">upscale</span><span class="p">):</span>
<span class="n">im</span> <span class="o">=</span> <span class="n">_scale</span><span class="p">(</span><span class="n">im</span><span class="o">=</span><span class="n">im</span><span class="p">,</span> <span class="n">x</span><span class="o">=</span><span class="n">source_x</span> <span class="o">*</span> <span class="n">scale</span><span class="p">,</span> <span class="n">y</span><span class="o">=</span><span class="n">source_y</span> <span class="o">*</span> <span class="n">scale</span><span class="p">)</span>
<span class="k">if</span> <span class="n">crop</span><span class="p">:</span>
<span class="n">im</span> <span class="o">=</span> <span class="n">_crop</span><span class="p">(</span><span class="n">im</span><span class="o">=</span><span class="n">im</span><span class="p">,</span> <span class="n">target_x</span><span class="o">=</span><span class="n">target_x</span><span class="p">,</span> <span class="n">target_y</span><span class="o">=</span><span class="n">target_y</span><span class="p">)</span>
<span class="c1"># Close image and replace format/metadata, as PIL blows this away.</span>
<span class="n">im</span><span class="o">.</span><span class="n">format</span><span class="p">,</span> <span class="n">im</span><span class="o">.</span><span class="n">info</span> <span class="o">=</span> <span class="n">im_format</span><span class="p">,</span> <span class="n">im_info</span>
<span class="n">image</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
<span class="k">return</span> <span class="n">im</span></div>
<div class="viewcode-block" id="xml_has_javascript"><a class="viewcode-back" href="../../markdownx/docs/utilities.html#markdownx.utils.xml_has_javascript">[docs]</a><span class="k">def</span> <span class="nf">xml_has_javascript</span><span class="p">(</span><span class="n">data</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Checks XML for JavaScript. See &quot;security&quot; in :doc:`customization &lt;../../customization&gt;` for</span>
<span class="sd"> additional information.</span>
<span class="sd"> :param data: Contents to be monitored for JavaScript injection.</span>
<span class="sd"> :type data: str, bytes</span>
<span class="sd"> :return: ``True`` if **data** contains JavaScript tag(s), otherwise ``False``.</span>
<span class="sd"> :rtype: bool</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="kn">from</span> <span class="nn">re</span> <span class="k">import</span> <span class="n">search</span><span class="p">,</span> <span class="n">IGNORECASE</span><span class="p">,</span> <span class="n">MULTILINE</span>
<span class="n">data</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="n">data</span><span class="p">,</span> <span class="n">encoding</span><span class="o">=</span><span class="s1">&#39;UTF-8&#39;</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="n">data</span><span class="p">)</span>
<span class="c1"># ------------------------------------------------</span>
<span class="c1"># Handles JavaScript nodes and stringified nodes.</span>
<span class="c1"># ------------------------------------------------</span>
<span class="c1"># Filters against &quot;script&quot; / &quot;if&quot; / &quot;for&quot; within node attributes.</span>
<span class="n">pattern</span> <span class="o">=</span> <span class="s1">r&#39;(&lt;\s*\bscript\b.*&gt;.*)|(.*\bif\b\s*\(.?={2,3}.*\))|(.*\bfor\b\s*\(.*\))&#39;</span>
<span class="n">found</span> <span class="o">=</span> <span class="n">search</span><span class="p">(</span>
<span class="n">pattern</span><span class="o">=</span><span class="n">pattern</span><span class="p">,</span>
<span class="n">string</span><span class="o">=</span><span class="n">data</span><span class="p">,</span>
<span class="n">flags</span><span class="o">=</span><span class="n">IGNORECASE</span> <span class="o">|</span> <span class="n">MULTILINE</span>
<span class="p">)</span>
<span class="k">if</span> <span class="n">found</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">return</span> <span class="kc">True</span>
<span class="c1"># ------------------------------------------------</span>
<span class="c1"># Handles JavaScript injection into attributes</span>
<span class="c1"># for element creation.</span>
<span class="c1"># ------------------------------------------------</span>
<span class="kn">from</span> <span class="nn">xml.etree.ElementTree</span> <span class="k">import</span> <span class="n">fromstring</span>
<span class="n">parsed_xml</span> <span class="o">=</span> <span class="p">(</span>
<span class="p">(</span><span class="n">attribute</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span>
<span class="k">for</span> <span class="n">elm</span> <span class="ow">in</span> <span class="n">fromstring</span><span class="p">(</span><span class="n">data</span><span class="p">)</span><span class="o">.</span><span class="n">iter</span><span class="p">()</span>
<span class="k">for</span> <span class="n">attribute</span><span class="p">,</span> <span class="n">value</span> <span class="ow">in</span> <span class="n">elm</span><span class="o">.</span><span class="n">attrib</span><span class="o">.</span><span class="n">items</span><span class="p">()</span>
<span class="p">)</span>
<span class="k">for</span> <span class="n">key</span><span class="p">,</span> <span class="n">val</span> <span class="ow">in</span> <span class="n">parsed_xml</span><span class="p">:</span>
<span class="k">if</span> <span class="s1">&#39;&quot;&#39;</span> <span class="ow">in</span> <span class="n">val</span> <span class="ow">or</span> <span class="s2">&quot;&#39;&quot;</span> <span class="ow">in</span> <span class="n">val</span><span class="p">:</span>
<span class="k">return</span> <span class="kc">True</span>
<span class="c1"># It is (hopefully) safe.</span>
<span class="k">return</span> <span class="kc">False</span></div>
</pre></div>
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