mirror of https://github.com/tLDP/python-tldp
adding a bunch of docstring docs
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@ -12,11 +12,47 @@ from .typeguesser import guess, knownextensions
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class SourceCollection(collections.MutableMapping):
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'''a dict-like container for SourceDocument objects
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The key in the SourceCollection is the stem name of the document, which
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allows convenient access and guarantees non-collision.
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The use of the stem as a key works conveniently with the
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OutputCollection which uses the same strategy on OutputDirectory.
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'''
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def __repr__(self):
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return '<%s:(%s docs)>' % (self.__class__.__name__, len(self))
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def __init__(self, args=None):
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'''construct a SourceCollection
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If args is not supplied, SourceCollection is basically a dict().
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If args is supplied, then SourceCollection ensures it is operating on
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the absolute filesystem path for each of the source directories.
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If any of the supplied args does not exist as a directory,
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SourceCollection will log the missing source directory names and then
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will raise an IOError and quit.
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For each document that it finds in a source directory, it creates a
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SourceDocument entry in itself using the stem name as a key.
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The rules for identifying possible SourceDocuments go as follows.
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Within any source directory, a source document can consist of a single
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file with an extension or a directory.
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If the candidate entry is a directory, then, the stem is the full
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directory name, e.g. Masquerading-Simple-HOWTO
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If the candidate entry is a file, the stem is the filename minus
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extension, e.g. Encrypted-Root-Filesystem-HOWTO
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Because the SourceCollection accepts (and will scan) many source
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directories, it is possible that there will be stem name collisions.
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If it discovers a stem collision, SourceCollection will issue a
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warning and skip the duplicated stem(s). [It also tries to process
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the source directories and candidates in a stable order between runs.]
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'''
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if args is None:
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return
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dirs = [os.path.abspath(x) for x in args]
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@ -70,13 +106,39 @@ class SourceCollection(collections.MutableMapping):
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class SourceDocument(object):
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'''a class providing a container for each set of source documents
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'''
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def __repr__(self):
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return '<%s:%s (%s)>' % \
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(self.__class__.__name__, self.filename, self.doctype)
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def __init__(self, filename):
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# -- canonicalize the pathname we are given.
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'''construct a SourceDocument
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filename is a required parameter
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The filename is the main (and sometimes sole) document representing
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the source of the LDP HOWTO or Guide. It is the document that is
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passed by name to be handled by any document processing toolchains
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(see also tldp.doctypes).
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Each instantiation will raise an IOERror if the supplied filename does
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not exist or if the filename isn't a file (symlink is fine, directory
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or fifo is not).
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The remainder of the instantiation will set attributes that are useful
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later in the processing phase, for example, stem, status, enclosing
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directory name and file extension.
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There are two important attributes. First, the document type guesser
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will try to infer the doctype (from file extension and signature).
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Note that it is not a fatal error if document type cannot be guessed,
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but the document will not be able to be processed. Second, it is
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useful during the decision-making process to know if any of the source
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files are newer than the output files. Thus, the stat() information
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for every file in the source document directory (or just the single
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source document file) will be collected.
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'''
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self.filename = os.path.abspath(filename)
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if not os.path.exists(self.filename):
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logger.critical("Missing source document: %s", self.filename)
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@ -85,7 +147,7 @@ class SourceDocument(object):
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logger.critical("Source document is not a plain file: %s", self.filename)
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raise TypeError("Wrong type, not a plain file: " + self.filename)
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self.doctype = self._doctype()
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self.doctype = guess(self.filename)
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self.status = 'source'
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self.dirname, self.basename = os.path.split(self.filename)
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self.stem, self.ext = os.path.splitext(self.basename)
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@ -96,8 +158,5 @@ class SourceDocument(object):
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else:
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self.statinfo = statfiles(self.filename, relative=self.dirname)
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def _doctype(self):
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return guess(self.filename)
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#
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# -- end of file
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