# -*- coding: utf-8 -*-
-from librarian import ValidationError, NoDublinCore, dcparser, ParseError
+#
+# This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
+from librarian import ValidationError, NoDublinCore, ParseError
+from librarian import RDFNS
+from librarian import dcparser
+
from xml.parsers.expat import ExpatError
from lxml import etree
-from lxml.etree import XMLSyntaxError
+from lxml.etree import XMLSyntaxError, XSLTApplyError
import re
from StringIO import StringIO
class WLDocument(object):
LINE_SWAP_EXPR = re.compile(r'/\s', re.MULTILINE | re.UNICODE);
- def __init__(self, edoc):
+ def __init__(self, edoc, parse_dublincore=True):
self.edoc = edoc
root_elem = edoc.getroot()
- rdf_ns = dcparser.BookInfo.RDF
- dc_path = './/' + rdf_ns('RDF')
-
+
+ dc_path = './/' + RDFNS('RDF')
+
if root_elem.tag != 'utwor':
raise ValidationError("Invalid root element. Found '%s', should be 'utwor'" % root_elem.tag)
- self.rdf_elem = root_elem.find(dc_path)
+ if parse_dublincore:
+ self.rdf_elem = root_elem.find(dc_path)
- if self.rdf_elem is None:
- raise NoDublinCore('Document has no DublinCore - which is required.')
+ if self.rdf_elem is None:
+ raise NoDublinCore('Document has no DublinCore - which is required.')
- self.book_info = dcparser.BookInfo.from_element(self.rdf_elem)
+ self.book_info = dcparser.BookInfo.from_element(self.rdf_elem)
+ else:
+ self.book_info = None
@classmethod
- def from_string(cls, xml, swap_endlines=False):
- return cls.from_file(StringIO(xml), swap_endlines)
+ def from_string(cls, xml, *args, **kwargs):
+ return cls.from_file(StringIO(xml), *args, **kwargs)
@classmethod
- def from_file(cls, xmlfile, swap_endlines=False):
+ def from_file(cls, xmlfile, swap_endlines=False, parse_dublincore=True):
# first, prepare for parsing
if isinstance(xmlfile, basestring):
if not isinstance(data, unicode):
data = data.decode('utf-8')
- if swap_endlines:
- data = cls.LINE_SWAP_EXPR.sub(u'<br />\n', data)
-
+ data = data.replace(u'\ufeff', '')
+
try:
- parser = etree.XMLParser(remove_blank_text=True)
- return cls( etree.parse(StringIO(data), parser) )
- except XMLSyntaxError, e:
- raise ParseError(e.message)
- except ExpatError, e:
- raise ParseError(e.message)
+ parser = etree.XMLParser(remove_blank_text=False)
+ tree = etree.parse(StringIO(data), parser)
+
+ if swap_endlines:
+ cls.swap_endlines(tree)
+
+ return cls(tree, parse_dublincore=parse_dublincore)
+ except (ExpatError, XMLSyntaxError, XSLTApplyError), e:
+ raise ParseError(e)
+
+ @classmethod
+ def swap_endlines(cls, tree):
+ # only swap inside stanzas
+ for elem in tree.iter('strofa'):
+ for child in list(elem):
+ if child.tail:
+ chunks = cls.LINE_SWAP_EXPR.split(child.tail)
+ ins_index = elem.index(child) + 1
+ while len(chunks) > 1:
+ ins = etree.Element('br')
+ ins.tail = chunks.pop()
+ elem.insert(ins_index, ins)
+ child.tail = chunks.pop(0)
+ if elem.text:
+ chunks = cls.LINE_SWAP_EXPR.split(elem.text)
+ while len(chunks) > 1:
+ ins = etree.Element('br')
+ ins.tail = chunks.pop()
+ elem.insert(0, ins)
+ elem.text = chunks.pop(0)
+
+ def chunk(self, path):
+ # convert the path to XPath
+ expr = self.path_to_xpath(path)
+ elems = self.edoc.xpath(expr)
+
+ if len(elems) == 0:
+ return None
+ else:
+ return elems[0]
+
+ def path_to_xpath(self, path):
+ parts = []
+
+ for part in path.split('/'):
+ match = re.match(r'([^\[]+)\[(\d+)\]', part)
+ if not match:
+ parts.append(part)
+ else:
+ tag, n = match.groups()
+ parts.append("*[%d][name() = '%s']" % (int(n)+1, tag) )
+
+ if parts[0] == '.':
+ parts[0] = ''
+
+ return '/'.join(parts)
def transform(self, stylesheet, **options):
return self.edoc.xslt(stylesheet, **options)
def update_dc(self):
- parent = self.rdf_elem.getparent()
- parent.replace( self.rdf_elem, self.book_info.to_etree(parent) )
+ if self.book_info:
+ parent = self.rdf_elem.getparent()
+ parent.replace( self.rdf_elem, self.book_info.to_etree(parent) )
def serialize(self):
self.update_dc()
return etree.tostring(self.edoc, encoding=unicode, pretty_print=True)
+
+ def merge_chunks(self, chunk_dict):
+ unmerged = []
+
+ for key, data in chunk_dict.iteritems():
+ try:
+ xpath = self.path_to_xpath(key)
+ node = self.edoc.xpath(xpath)[0]
+ repl = etree.fromstring(u"<%s>%s</%s>" %(node.tag, data, node.tag) )
+ node.getparent().replace(node, repl);
+ except Exception, e:
+ unmerged.append( repr( (key, xpath, e) ) )
+
+ return unmerged
+
+ def clean_ed_note(self):
+ """ deletes forbidden tags from nota_red """
+
+ for node in self.edoc.xpath('|'.join('//nota_red//%s' % tag for tag in
+ ('pa', 'pe', 'pr', 'pt', 'begin', 'end', 'motyw'))):
+ tail = node.tail
+ node.clear()
+ node.tag = 'span'
+ node.tail = tail
fnp / librarian.git / blobdiff