doc/api/python/fileutils-module.html
author Simon Howkins <simonh@symbian.org>
Mon, 07 Jun 2010 15:04:21 +0100
changeset 1076 86434e6d9873
parent 432 f2ddfa555b0f
permissions -rw-r--r--
Merge in tools for manipulating sytem defintions from their own repo.

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        Module&nbsp;fileutils
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<!-- ==================== MODULE DESCRIPTION ==================== -->
<h1 class="epydoc">Module fileutils</h1><span class="codelink"><a href="fileutils-pysrc.html">source&nbsp;code</a></span><br /><br />
<dl class="rst-docutils">
<dt>File manipulation related functionalities:</dt>
<dd><ul class="rst-first rst-last rst-simple">
<li>Filescanner</li>
<li>rmtree (fixed version)</li>
<li>move (fixed version)</li>
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        <a href="fileutils.AbstractScanner-class.html" class="summary-name">AbstractScanner</a><br />
      This class implements all the required infrastructure for filescanning.
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      <span class="summary-type">&nbsp;</span>
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        <a href="fileutils.FileScanner-class.html" class="summary-name">FileScanner</a><br />
      Scans the filesystem for files that match the selection paths.
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          <td><span class="summary-sig"><a href="fileutils-module.html#move" class="summary-sig-name">move</a>(<span class="summary-sig-arg">src</span>,
        <span class="summary-sig-arg">dst</span>)</span><br />
      Recursively move a file or directory to another location.</td>
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            <span class="codelink"><a href="fileutils-pysrc.html#move">source&nbsp;code</a></span>
            
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          <td><span class="summary-sig"><a href="fileutils-module.html#rmtree" class="summary-sig-name">rmtree</a>(<span class="summary-sig-arg">rootdir</span>)</span><br />
      Catch shutil.rmtree failures on Windows when files are read-only.</td>
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            <span class="codelink"><a href="fileutils-pysrc.html#rmtree">source&nbsp;code</a></span>
            
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          <td><span class="summary-sig"><a name="destinsrc"></a><span class="summary-sig-name">destinsrc</span>(<span class="summary-sig-arg">src</span>,
        <span class="summary-sig-arg">dst</span>)</span><br />
      Fixed version of destinscr, that doesn't match dst with same root name.</td>
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            <span class="codelink"><a href="fileutils-pysrc.html#destinsrc">source&nbsp;code</a></span>
            
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          <td><span class="summary-sig"><a name="which"></a><span class="summary-sig-name">which</span>(<span class="summary-sig-arg">executable</span>)</span><br />
      Search for executable in the PATH.</td>
          <td align="right" valign="top">
            <span class="codelink"><a href="fileutils-pysrc.html#which">source&nbsp;code</a></span>
            
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      <span class="summary-type">&nbsp;</span>
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          <td><span class="summary-sig"><a href="fileutils-module.html#read_policy_content" class="summary-sig-name">read_policy_content</a>(<span class="summary-sig-arg">filename</span>)</span><br />
      Read the policy number from the policy file.</td>
          <td align="right" valign="top">
            <span class="codelink"><a href="fileutils-pysrc.html#read_policy_content">source&nbsp;code</a></span>
            
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          <td><span class="summary-sig"><a name="load_policy_content"></a><span class="summary-sig-name">load_policy_content</span>(<span class="summary-sig-arg">filename</span>)</span><br />
      Testing policy content loading.</td>
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            <span class="codelink"><a href="fileutils-pysrc.html#load_policy_content">source&nbsp;code</a></span>
            
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          <td><span class="summary-sig"><a href="fileutils-module.html#guess_encoding" class="summary-sig-name">guess_encoding</a>(<span class="summary-sig-arg">data</span>)</span><br />
      Given a byte string, guess the encoding.</td>
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            <span class="codelink"><a href="fileutils-pysrc.html#guess_encoding">source&nbsp;code</a></span>
            
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          <td><span class="summary-sig"><a name="getmd5"></a><span class="summary-sig-name">getmd5</span>(<span class="summary-sig-arg">fullpath</span>,
        <span class="summary-sig-arg">chunk_size</span>=<span class="summary-sig-default">2**16</span>)</span><br />
      returns the md5 value</td>
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            <span class="codelink"><a href="fileutils-pysrc.html#getmd5">source&nbsp;code</a></span>
            
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      <span class="summary-type">&nbsp;</span>
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          <td><span class="summary-sig"><a name="read_symbian_policy_content"></a><span class="summary-sig-name">read_symbian_policy_content</span>(<span class="summary-sig-arg">filename</span>)</span><br />
      Read the policy category from the policy file.</td>
          <td align="right" valign="top">
            <span class="codelink"><a href="fileutils-pysrc.html#read_symbian_policy_content">source&nbsp;code</a></span>
            
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      <span class="summary-type">&nbsp;</span>
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          <td><span class="summary-sig"><a name="get_next_free_drive"></a><span class="summary-sig-name">get_next_free_drive</span>()</span><br />
      Return the first free drive found else it raise an exception.</td>
          <td align="right" valign="top">
            <span class="codelink"><a href="fileutils-pysrc.html#get_next_free_drive">source&nbsp;code</a></span>
            
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      <span class="summary-type">&nbsp;</span>
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          <td><span class="summary-sig"><a name="subst"></a><span class="summary-sig-name">subst</span>(<span class="summary-sig-arg">drive</span>,
        <span class="summary-sig-arg">path</span>)</span><br />
      Substing path as a drive.</td>
          <td align="right" valign="top">
            <span class="codelink"><a href="fileutils-pysrc.html#subst">source&nbsp;code</a></span>
            
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      <span class="summary-type">&nbsp;</span>
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          <td><span class="summary-sig"><a name="unsubst"></a><span class="summary-sig-name">unsubst</span>(<span class="summary-sig-arg">drive</span>)</span><br />
      Unsubsting the drive.</td>
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            <span class="codelink"><a href="fileutils-pysrc.html#unsubst">source&nbsp;code</a></span>
            
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      <span class="summary-type">&nbsp;</span>
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          <td><span class="summary-sig"><a name="mount"></a><span class="summary-sig-name">mount</span>(<span class="summary-sig-arg">drive</span>,
        <span class="summary-sig-arg">unc</span>,
        <span class="summary-sig-arg">username</span>=<span class="summary-sig-default">None</span>,
        <span class="summary-sig-arg">password</span>=<span class="summary-sig-default">None</span>,
        <span class="summary-sig-arg">persistent</span>=<span class="summary-sig-default">False</span>)</span><br />
      Windows helper function to map a network drive.</td>
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            <span class="codelink"><a href="fileutils-pysrc.html#mount">source&nbsp;code</a></span>
            
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          <td><span class="summary-sig"><a name="umount"></a><span class="summary-sig-name">umount</span>(<span class="summary-sig-arg">drive</span>)</span><br />
      Windows helper function to map a network drive.</td>
          <td align="right" valign="top">
            <span class="codelink"><a href="fileutils-pysrc.html#umount">source&nbsp;code</a></span>
            
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      <span class="summary-type">&nbsp;</span>
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          <td><span class="summary-sig"><a name="rmdir"></a><span class="summary-sig-name">rmdir</span>(<span class="summary-sig-arg">path</span>)</span></td>
          <td align="right" valign="top">
            <span class="codelink"><a href="fileutils-pysrc.html#rmdir">source&nbsp;code</a></span>
            
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          <td><span class="summary-sig"><a name="remove"></a><span class="summary-sig-name">remove</span>(<span class="summary-sig-arg">path</span>)</span></td>
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            <span class="codelink"><a href="fileutils-pysrc.html#remove">source&nbsp;code</a></span>
            
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          <td><span class="summary-sig"><a href="fileutils-module.html#touch" class="summary-sig-name">touch</a>(<span class="summary-sig-arg">srcdir</span>)</span><br />
      Recursively touches all the files in the source path mentioned.</td>
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            <span class="codelink"><a href="fileutils-pysrc.html#touch">source&nbsp;code</a></span>
            
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<!-- ==================== VARIABLES ==================== -->
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    </td><td class="summary">
        <a name="LOGGER"></a><span class="summary-name">LOGGER</span> = <code title="logging.getLogger('fileutils')">logging.getLogger('fileutils')</code>
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        <a name="LOGGER_LOCK"></a><span class="summary-name">LOGGER_LOCK</span> = <code title="logging.getLogger('fileutils.lock')">logging.getLogger('fileutils.lock')</code>
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        <a href="fileutils-module.html#ENCODING_MATRIX" class="summary-name">ENCODING_MATRIX</a> = <code title="{codecs.BOM_UTF8: 'utf_8', codecs.BOM_UTF16: 'utf_16', codecs.BOM_UTF1\
6_BE: 'utf_16_be', codecs.BOM_UTF16_LE: 'utf_16_le',}">{codecs.BOM_UTF8: 'utf_8', codecs.BOM_UTF16:<code class="variable-ellipsis">...</code></code>
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<!-- ==================== FUNCTION DETAILS ==================== -->
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<a name="move"></a>
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  <h3 class="epydoc"><span class="sig"><span class="sig-name">move</span>(<span class="sig-arg">src</span>,
        <span class="sig-arg">dst</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="fileutils-pysrc.html#move">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  <p>Recursively move a file or directory to another location.</p>
<p>If the destination is on our current filesystem, then simply use
rename.  Otherwise, copy src to the dst and then remove src.
A lot more could be done here...  A look at a mv.c shows a lot of
the issues this implementation glosses over.</p>
  <dl class="fields">
  </dl>
</td></tr></table>
</div>
<a name="rmtree"></a>
<div>
<table class="details" border="1" cellpadding="3"
       cellspacing="0" width="100%" bgcolor="white">
<tr><td>
  <table width="100%" cellpadding="0" cellspacing="0" border="0">
  <tr valign="top"><td>
  <h3 class="epydoc"><span class="sig"><span class="sig-name">rmtree</span>(<span class="sig-arg">rootdir</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="fileutils-pysrc.html#rmtree">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  Catch shutil.rmtree failures on Windows when files are read-only. Thanks Google!
  <dl class="fields">
  </dl>
</td></tr></table>
</div>
<a name="read_policy_content"></a>
<div>
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       cellspacing="0" width="100%" bgcolor="white">
<tr><td>
  <table width="100%" cellpadding="0" cellspacing="0" border="0">
  <tr valign="top"><td>
  <h3 class="epydoc"><span class="sig"><span class="sig-name">read_policy_content</span>(<span class="sig-arg">filename</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="fileutils-pysrc.html#read_policy_content">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  Read the policy number from the policy file.
strict allows to activate the new policy scanning.
  <dl class="fields">
  </dl>
</td></tr></table>
</div>
<a name="guess_encoding"></a>
<div>
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       cellspacing="0" width="100%" bgcolor="white">
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  <h3 class="epydoc"><span class="sig"><span class="sig-name">guess_encoding</span>(<span class="sig-arg">data</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="fileutils-pysrc.html#guess_encoding">source&nbsp;code</a></span>&nbsp;
    </td>
  </table>
  
  <p>Given a byte string, guess the encoding.</p>
<p>First it tries for UTF8/UTF16 BOM.</p>
<p>Next it tries the standard 'UTF8', 'ISO-8859-1', and 'cp1252' encodings,
Plus several gathered from locale information.</p>
<p>The calling program <em>must</em> first call locale.setlocale(locale.LC_ALL, '')</p>
<p>If successful it returns (decoded_unicode, successful_encoding)
If unsuccessful it raises a <tt class="rst-docutils literal"><span class="pre">UnicodeError</span></tt>.</p>
<p>This was taken from <a class="rst-reference external" href="http://www.voidspace.org.uk/python/articles/guessing_encoding.shtml" target="_top">http://www.voidspace.org.uk/python/articles/guessing_encoding.shtml</a></p>
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  Recursively touches all the files in the source path mentioned.
It does not touch the directories.
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    <dt>Value:</dt>
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{codecs.BOM_UTF8: 'utf_8', codecs.BOM_UTF16: 'utf_16', codecs.BOM_UTF1<span class="variable-linewrap"><img src="crarr.png" alt="\" /></span>
6_BE: 'utf_16_be', codecs.BOM_UTF16_LE: 'utf_16_le',}
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