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<h1>Source code for pylorax.sysutils</h1><div class="highlight"><pre>
<span class="c">#</span>
<span class="c"># sysutils.py</span>
<span class="c">#</span>
<span class="c"># Copyright (C) 2009 Red Hat, Inc.</span>
<span class="c">#</span>
<span class="c"># This program is free software; you can redistribute it and/or modify</span>
<span class="c"># it under the terms of the GNU General Public License as published by</span>
<span class="c"># the Free Software Foundation; either version 2 of the License, or</span>
<span class="c"># (at your option) any later version.</span>
<span class="c">#</span>
<span class="c"># This program is distributed in the hope that it will be useful,</span>
<span class="c"># but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<span class="c"># MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<span class="c"># GNU General Public License for more details.</span>
<span class="c">#</span>
<span class="c"># You should have received a copy of the GNU General Public License</span>
<span class="c"># along with this program. If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
<span class="c">#</span>
<span class="c"># Red Hat Author(s): Martin Gracik &lt;mgracik@redhat.com&gt;</span>
<span class="c">#</span>
<span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s">&quot;joinpaths&quot;</span><span class="p">,</span> <span class="s">&quot;touch&quot;</span><span class="p">,</span> <span class="s">&quot;replace&quot;</span><span class="p">,</span> <span class="s">&quot;chown_&quot;</span><span class="p">,</span> <span class="s">&quot;chmod_&quot;</span><span class="p">,</span> <span class="s">&quot;remove&quot;</span><span class="p">,</span>
<span class="s">&quot;linktree&quot;</span><span class="p">]</span>
<span class="kn">import</span> <span class="nn">sys</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">re</span>
<span class="kn">import</span> <span class="nn">fileinput</span>
<span class="kn">import</span> <span class="nn">pwd</span>
<span class="kn">import</span> <span class="nn">grp</span>
<span class="kn">import</span> <span class="nn">glob</span>
<span class="kn">import</span> <span class="nn">shutil</span>
<span class="kn">from</span> <span class="nn">pylorax.executils</span> <span class="kn">import</span> <span class="n">runcmd</span>
<div class="viewcode-block" id="joinpaths"><a class="viewcode-back" href="../../pylorax.html#pylorax.sysutils.joinpaths">[docs]</a><span class="k">def</span> <span class="nf">joinpaths</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="n">path</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">sep</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">args</span><span class="p">)</span>
<span class="k">if</span> <span class="n">kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;follow_symlinks&quot;</span><span class="p">):</span>
<span class="k">return</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">realpath</span><span class="p">(</span><span class="n">path</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="n">path</span>
</div>
<div class="viewcode-block" id="touch"><a class="viewcode-back" href="../../pylorax.html#pylorax.sysutils.touch">[docs]</a><span class="k">def</span> <span class="nf">touch</span><span class="p">(</span><span class="n">fname</span><span class="p">):</span>
<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">fname</span><span class="p">,</span> <span class="s">&quot;w&quot;</span><span class="p">)</span> <span class="k">as</span> <span class="n">_</span><span class="p">:</span>
<span class="k">pass</span>
</div>
<div class="viewcode-block" id="replace"><a class="viewcode-back" href="../../pylorax.html#pylorax.sysutils.replace">[docs]</a><span class="k">def</span> <span class="nf">replace</span><span class="p">(</span><span class="n">fname</span><span class="p">,</span> <span class="n">find</span><span class="p">,</span> <span class="n">substitute</span><span class="p">):</span>
<span class="n">fin</span> <span class="o">=</span> <span class="n">fileinput</span><span class="o">.</span><span class="n">input</span><span class="p">(</span><span class="n">fname</span><span class="p">,</span> <span class="n">inplace</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
<span class="n">pattern</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="n">find</span><span class="p">)</span>
<span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">fin</span><span class="p">:</span>
<span class="n">line</span> <span class="o">=</span> <span class="n">pattern</span><span class="o">.</span><span class="n">sub</span><span class="p">(</span><span class="n">substitute</span><span class="p">,</span> <span class="n">line</span><span class="p">)</span>
<span class="n">sys</span><span class="o">.</span><span class="n">stdout</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">line</span><span class="p">)</span>
<span class="n">fin</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
</div>
<div class="viewcode-block" id="chown_"><a class="viewcode-back" href="../../pylorax.html#pylorax.sysutils.chown_">[docs]</a><span class="k">def</span> <span class="nf">chown_</span><span class="p">(</span><span class="n">path</span><span class="p">,</span> <span class="n">user</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">group</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">recursive</span><span class="o">=</span><span class="bp">False</span><span class="p">):</span>
<span class="n">uid</span> <span class="o">=</span> <span class="n">gid</span> <span class="o">=</span> <span class="o">-</span><span class="mi">1</span>
<span class="k">if</span> <span class="n">user</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">uid</span> <span class="o">=</span> <span class="n">pwd</span><span class="o">.</span><span class="n">getpwnam</span><span class="p">(</span><span class="n">user</span><span class="p">)[</span><span class="mi">2</span><span class="p">]</span>
<span class="k">if</span> <span class="n">group</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">gid</span> <span class="o">=</span> <span class="n">grp</span><span class="o">.</span><span class="n">getgrnam</span><span class="p">(</span><span class="n">group</span><span class="p">)[</span><span class="mi">2</span><span class="p">]</span>
<span class="k">for</span> <span class="n">fname</span> <span class="ow">in</span> <span class="n">glob</span><span class="o">.</span><span class="n">iglob</span><span class="p">(</span><span class="n">path</span><span class="p">):</span>
<span class="n">os</span><span class="o">.</span><span class="n">chown</span><span class="p">(</span><span class="n">fname</span><span class="p">,</span> <span class="n">uid</span><span class="p">,</span> <span class="n">gid</span><span class="p">)</span>
<span class="k">if</span> <span class="n">recursive</span> <span class="ow">and</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isdir</span><span class="p">(</span><span class="n">fname</span><span class="p">):</span>
<span class="k">for</span> <span class="n">nested</span> <span class="ow">in</span> <span class="n">os</span><span class="o">.</span><span class="n">listdir</span><span class="p">(</span><span class="n">fname</span><span class="p">):</span>
<span class="n">nested</span> <span class="o">=</span> <span class="n">joinpaths</span><span class="p">(</span><span class="n">fname</span><span class="p">,</span> <span class="n">nested</span><span class="p">)</span>
<span class="n">chown_</span><span class="p">(</span><span class="n">nested</span><span class="p">,</span> <span class="n">user</span><span class="p">,</span> <span class="n">group</span><span class="p">,</span> <span class="n">recursive</span><span class="p">)</span>
</div>
<div class="viewcode-block" id="chmod_"><a class="viewcode-back" href="../../pylorax.html#pylorax.sysutils.chmod_">[docs]</a><span class="k">def</span> <span class="nf">chmod_</span><span class="p">(</span><span class="n">path</span><span class="p">,</span> <span class="n">mode</span><span class="p">,</span> <span class="n">recursive</span><span class="o">=</span><span class="bp">False</span><span class="p">):</span>
<span class="k">for</span> <span class="n">fname</span> <span class="ow">in</span> <span class="n">glob</span><span class="o">.</span><span class="n">iglob</span><span class="p">(</span><span class="n">path</span><span class="p">):</span>
<span class="n">os</span><span class="o">.</span><span class="n">chmod</span><span class="p">(</span><span class="n">fname</span><span class="p">,</span> <span class="n">mode</span><span class="p">)</span>
<span class="k">if</span> <span class="n">recursive</span> <span class="ow">and</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isdir</span><span class="p">(</span><span class="n">fname</span><span class="p">):</span>
<span class="k">for</span> <span class="n">nested</span> <span class="ow">in</span> <span class="n">os</span><span class="o">.</span><span class="n">listdir</span><span class="p">(</span><span class="n">fname</span><span class="p">):</span>
<span class="n">nested</span> <span class="o">=</span> <span class="n">joinpaths</span><span class="p">(</span><span class="n">fname</span><span class="p">,</span> <span class="n">nested</span><span class="p">)</span>
<span class="n">chmod_</span><span class="p">(</span><span class="n">nested</span><span class="p">,</span> <span class="n">mode</span><span class="p">,</span> <span class="n">recursive</span><span class="p">)</span>
</div>
<span class="k">def</span> <span class="nf">cpfile</span><span class="p">(</span><span class="n">src</span><span class="p">,</span> <span class="n">dst</span><span class="p">):</span>
<span class="n">shutil</span><span class="o">.</span><span class="n">copy2</span><span class="p">(</span><span class="n">src</span><span class="p">,</span> <span class="n">dst</span><span class="p">)</span>
<span class="k">if</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isdir</span><span class="p">(</span><span class="n">dst</span><span class="p">):</span>
<span class="n">dst</span> <span class="o">=</span> <span class="n">joinpaths</span><span class="p">(</span><span class="n">dst</span><span class="p">,</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">basename</span><span class="p">(</span><span class="n">src</span><span class="p">))</span>
<span class="k">return</span> <span class="n">dst</span>
<span class="k">def</span> <span class="nf">mvfile</span><span class="p">(</span><span class="n">src</span><span class="p">,</span> <span class="n">dst</span><span class="p">):</span>
<span class="k">if</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isdir</span><span class="p">(</span><span class="n">dst</span><span class="p">):</span>
<span class="n">dst</span> <span class="o">=</span> <span class="n">joinpaths</span><span class="p">(</span><span class="n">dst</span><span class="p">,</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">basename</span><span class="p">(</span><span class="n">src</span><span class="p">))</span>
<span class="n">os</span><span class="o">.</span><span class="n">rename</span><span class="p">(</span><span class="n">src</span><span class="p">,</span> <span class="n">dst</span><span class="p">)</span>
<span class="k">return</span> <span class="n">dst</span>
<div class="viewcode-block" id="remove"><a class="viewcode-back" href="../../pylorax.html#pylorax.sysutils.remove">[docs]</a><span class="k">def</span> <span class="nf">remove</span><span class="p">(</span><span class="n">target</span><span class="p">):</span>
<span class="k">if</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isdir</span><span class="p">(</span><span class="n">target</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">islink</span><span class="p">(</span><span class="n">target</span><span class="p">):</span>
<span class="n">shutil</span><span class="o">.</span><span class="n">rmtree</span><span class="p">(</span><span class="n">target</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">os</span><span class="o">.</span><span class="n">unlink</span><span class="p">(</span><span class="n">target</span><span class="p">)</span>
</div>
<div class="viewcode-block" id="linktree"><a class="viewcode-back" href="../../pylorax.html#pylorax.sysutils.linktree">[docs]</a><span class="k">def</span> <span class="nf">linktree</span><span class="p">(</span><span class="n">src</span><span class="p">,</span> <span class="n">dst</span><span class="p">):</span>
<span class="n">runcmd</span><span class="p">([</span><span class="s">&quot;/bin/cp&quot;</span><span class="p">,</span> <span class="s">&quot;-alx&quot;</span><span class="p">,</span> <span class="n">src</span><span class="p">,</span> <span class="n">dst</span><span class="p">])</span></div>
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