X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/b6ec0976a383cc1823f4a199bc3e6dc40880b049..25af49b6c63e1c005129856e107143864ad5b245:/librarian/parser.py diff --git a/librarian/parser.py b/librarian/parser.py index 469b7df..a0b8a7f 100644 --- a/librarian/parser.py +++ b/librarian/parser.py @@ -3,198 +3,28 @@ # 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, NoProvider -from librarian import RDFNS -from librarian import dcparser - -from xml.parsers.expat import ExpatError from lxml import etree -from lxml.etree import XMLSyntaxError, XSLTApplyError - -import os -import re -from StringIO import StringIO - -class WLDocument(object): - LINE_SWAP_EXPR = re.compile(r'/\s', re.MULTILINE | re.UNICODE) - provider = None - - def __init__(self, edoc, parse_dublincore=True, provider=None): - self.edoc = edoc - self.provider = provider - - root_elem = edoc.getroot() - - dc_path = './/' + RDFNS('RDF') - - if root_elem.tag != 'utwor': - raise ValidationError("Invalid root element. Found '%s', should be 'utwor'" % root_elem.tag) - - 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.') - - self.book_info = dcparser.BookInfo.from_element(self.rdf_elem) - else: - self.book_info = None - - @classmethod - def from_string(cls, xml, *args, **kwargs): - return cls.from_file(StringIO(xml), *args, **kwargs) - - @classmethod - def from_file(cls, xmlfile, parse_dublincore=True, provider=None): - - # first, prepare for parsing - if isinstance(xmlfile, basestring): - file = open(xmlfile, 'rb') - try: - data = file.read() - finally: - file.close() - else: - data = xmlfile.read() - - if not isinstance(data, unicode): - data = data.decode('utf-8') - - data = data.replace(u'\ufeff', '') - - try: - parser = etree.XMLParser(remove_blank_text=False) - tree = etree.parse(StringIO(data.encode('utf-8')), parser) - - return cls(tree, parse_dublincore=parse_dublincore, provider=provider) - except (ExpatError, XMLSyntaxError, XSLTApplyError), e: - raise ParseError(e) - - def swap_endlines(self): - """Converts line breaks in stanzas into
tags.""" - # only swap inside stanzas - for elem in self.edoc.iter('strofa'): - for child in list(elem): - if child.tail: - chunks = self.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 = self.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 parts(self): - if self.provider is None: - raise NoProvider('No document provider supplied.') - if self.book_info is None: - raise NoDublinCore('No Dublin Core in document.') - for part_uri in self.book_info.parts: - yield self.from_file(self.provider.by_uri(part_uri), - provider=self.provider) - - 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): - 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" %(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 - - # Converters - - def as_html(self, *args, **kwargs): - from librarian import html - return html.transform(self, *args, **kwargs) - - def as_text(self, *args, **kwargs): - from librarian import text - return text.transform(self, *args, **kwargs) - - def as_epub(self, *args, **kwargs): - from librarian import epub - return epub.transform(self, *args, **kwargs) - - def as_pdf(self, *args, **kwargs): - from librarian import pdf - return pdf.transform(self, *args, **kwargs) - - def as_mobi(self, *args, **kwargs): - from librarian import mobi - return mobi.transform(self, *args, **kwargs) - - def save_output_file(self, output_file, output_path=None, - output_dir_path=None, make_author_dir=False, ext=None): - if output_dir_path: - save_path = output_dir_path - if make_author_dir: - save_path = os.path.join(save_path, - unicode(self.book_info.author).encode('utf-8')) - save_path = os.path.join(save_path, self.book_info.slug) - if ext: - save_path += '.%s' % ext - else: - save_path = output_path - - output_file.save_as(save_path) +from . import DCNS, SSTNS +from . import core, meta + + +class SSTParser(etree.XMLParser): + """ XML parser using relevant element classes. """ + def __init__(self): + super(SSTParser, self).__init__(remove_blank_text=False) + lookup = etree.ElementNamespaceClassLookup() + self.set_element_class_lookup(lookup) + + # Define core language tags. + sst_ns = lookup.get_namespace(SSTNS.uri) + sst_ns['aside'] = core.Aside + sst_ns['div'] = core.Div + sst_ns['header'] = core.Header + sst_ns['section'] = core.Section + sst_ns['span'] = core.Span + sst_ns['metadata'] = meta.Metadata + + # Define any special metadata. + dc_ns = lookup.get_namespace(DCNS.uri) + dc_ns['creator'] = meta.Person + dc_ns['identifier'] = meta.Identifier