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"""Index file handler for Python.
Exported classes:
Entry - a entry class.
IndexHandler - Index file handler.
"""
import xml.sax.handler
class Entry:
"""Class for common index entry.
It contains each feature of an entry element.
"""
def __init__(self):
"""Creates an instance of the Entry class.
Set the object attributes with default values.
"""
self.id = ""
self.name = {}
self.path = ""
self.synDict = {}
self.abbreviation = []
self.authors = ""
self.date = ""
class IndexHandler(xml.sax.handler.ContentHandler):
"""Class for receiving logical Index content events.
It supports Index entities as defined in the project's DTD.
For more details, see xml/index.dtd
"""
def __init__(self):
"""Creates an instance of the IndexHandler class.
Set the object attributes with default values.
"""
self.title = {}
self.titleLang = ""
self.inTitle = False
self.entry = None
self.entryList = {'dir': [], 'file': []}
self.inEntry = False
self.nameLang = ""
self.inName = False
self.inDirname = False
self.inFilename = False
self.type = None
self.synonym = ""
self.synLang = ""
self.inSynonym = False
self.abbreviation = ""
self.inAbbreviation = False
self.inAuthors = False
self.inDate = False
def startElement(self, name, attributes):
"""Signals the start of an element.
The function set a variable depending on the element and the attribut.
Parameters:
name - contains the element name as a string.
attributes - contains an instance of the Attributes class.
"""
if name == "title":
self.inTitle = True
if "xml:lang" in attributes:
self.titleLang = attributes["xml:lang"]
if self.titleLang == "":
self.titleLang = "en"
else:
self.titleLang = "en"
self.title[self.titleLang] = ""
if name == "entry":
self.inEntry = True
self.entry = Entry()
if name == "name":
self.inName = True
if "xml:lang" in attributes:
self.nameLang = attributes["xml:lang"]
if self.nameLang == "":
self.nameLang = "en"
else:
self.nameLang = "en"
self.entry.name[self.nameLang] = ""
if name == "dirname":
self.inDirname = True
self.type = "dir"
if name == "filename":
self.inFilename = True
self.type = "file"
if name == "synonym":
self.inSynonym = True
if "xml:lang" in attributes:
self.synLang = attributes["xml:lang"]
if self.synLang == "":
self.synLang = "en"
else:
self.synLang ="en"
if not self.synLang in self.entry.synDict:
self.entry.synDict[self.synLang] = []
if name == "abbrev":
self.inAbbreviation = True
if name == "authors":
self.inAuthors = True
if name == "date":
self.inDate = True
def characters(self, data):
"""Receives notification of character data.
The parser will call this method to report each chunk of character
data.
Parameters:
data - contains the chunk of character data.
"""
if self.inTitle:
self.title[self.titleLang] += data
elif self.inName:
self.entry.name[self.nameLang] += data
elif self.inDirname:
self.entry.path += data
elif self.inFilename:
self.entry.path += data
elif self.inSynonym:
self.synonym += data
elif self.inAbbreviation:
self.abbreviation += data
elif self.inAuthors:
self.entry.authors += data
elif self.inDate:
self.entry.date += data
def endElement(self,name):
"""Signals the end of an element.
Parameters:
name - contains the name of the element type.
"""
if name == "title":
self.inTitle = False
self.titleLang = ""
elif name == "entry":
if self.type == "file":
self.entryList["file"].append(self.entry)
else:
self.entryList["dir"].append(self.entry)
self.entry = None
self.inEntry = False
elif name == "name":
self.inName = False
self.nameLang = ""
elif name == "dirname":
self.inDirname = False
elif name == "filename":
self.inFilename = False
elif name == "synonym":
try:
self.entry.synDict[self.synLang].append(self.synonym)
except:
sys.stderr.write("[ERROR] Could not append the " \
+ "synonym to " % (self.synonym) \
+ "the %s dictionary.\n" % (self.synLang))
self.synonym = ""
self.inSynonym = False
self.synLang = ""
elif name == "abbrev":
self.inAbbreviation = False
self.entry.abbreviation.append(self.abbreviation)
self.abbreviation = ""
elif name == "authors":
self.inAuthors = False
elif name == "date":
self.inDate = False
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