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<title>The compdoc Module</title>
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<h1>The compdoc Module</h1>
<p>Implements the minimal functionality required
to extract a "Workbook" or "Book" stream (as one big string)
from an OLE2 Compound Document file.
</p><p>Copyright &#169; 2005-2012 Stephen John Machin, Lingfo Pty Ltd</p>
<p>This module is part of the xlrd package, which is released under a BSD-style licence.</p>
<h2>Module Contents</h2>
<dl>
<dt><b>CompDoc(mem, logfile=sys.stdout, DEBUG=0)</b> (class) [<a href='#compdoc.CompDoc-class'>#</a>]</dt>
<dd>
<p>Compound document handler.</p>
<dl>
<dt><i>mem</i></dt>
<dd>
The raw contents of the file, as a string, or as an mmap.mmap() object. The
only operation it needs to support is slicing.</dd>
</dl><br />
<p>For more information about this class, see <a href='#compdoc.CompDoc-class'><i>The CompDoc Class</i></a>.</p>
</dd>
<dt><a id='compdoc.SIGNATURE-variable' name='compdoc.SIGNATURE-variable'><b>SIGNATURE</b></a> (variable) [<a href='#compdoc.SIGNATURE-variable'>#</a>]</dt>
<dd>
<p>Magic cookie that should appear in the first 8 bytes of the file.</p>
</dd>
</dl>
<h2><a id='compdoc.CompDoc-class' name='compdoc.CompDoc-class'>The CompDoc Class</a></h2>
<dl>
<dt><b>CompDoc(mem, logfile=sys.stdout, DEBUG=0)</b> (class) [<a href='#compdoc.CompDoc-class'>#</a>]</dt>
<dd>
<p>Compound document handler.</p>
<dl>
<dt><i>mem</i></dt>
<dd>
The raw contents of the file, as a string, or as an mmap.mmap() object. The
only operation it needs to support is slicing.</dd>
</dl><br />
</dd>
<dt><a id='compdoc.CompDoc.get_named_stream-method' name='compdoc.CompDoc.get_named_stream-method'><b>get_named_stream(qname)</b></a> [<a href='#compdoc.CompDoc.get_named_stream-method'>#</a>]</dt>
<dd>
<p>Interrogate the compound document's directory; return the stream as a string if found, otherwise
return None.</p>
<dl>
<dt><i>qname</i></dt>
<dd>
Name of the desired stream e.g. u'Workbook'. Should be in Unicode or convertible thereto.</dd>
</dl><br />
</dd>
<dt><a id='compdoc.CompDoc.locate_named_stream-method' name='compdoc.CompDoc.locate_named_stream-method'><b>locate_named_stream(qname)</b></a> [<a href='#compdoc.CompDoc.locate_named_stream-method'>#</a>]</dt>
<dd>
<p>Interrogate the compound document's directory.
If the named stream is not found, (None, 0, 0) will be returned.
If the named stream is found and is contiguous within the original byte sequence (&quot;mem&quot;)
used when the document was opened,
then (mem, offset_to_start_of_stream, length_of_stream) is returned.
Otherwise a new string is built from the fragments and (new_string, 0, length_of_stream) is returned.</p>
<dl>
<dt><i>qname</i></dt>
<dd>
Name of the desired stream e.g. u'Workbook'. Should be in Unicode or convertible thereto.</dd>
</dl><br />
</dd>
</dl>
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