X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/3f007696b61ee78291def21c0dca98f94524a943..afc2b870c1646c8d6c1b754d4ee44aa059e834c9:/librarian/parser.py diff --git a/librarian/parser.py b/librarian/parser.py index 727f02e..e06c4d7 100644 --- a/librarian/parser.py +++ b/librarian/parser.py @@ -1,31 +1,34 @@ # -*- coding: utf-8 -*- # -# Copyright © 2008,2009,2010 Fundacja Nowoczesna Polska -# # This file is part of Librarian, licensed under GNU Affero GPLv3 or later. -# For full license text see COPYING or +# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information. # -from librarian import ValidationError, NoDublinCore, ParseError +from librarian import ValidationError, NoDublinCore, ParseError, NoProvider from librarian import RDFNS +from librarian.cover import DefaultEbookCover 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); + LINE_SWAP_EXPR = re.compile(r'/\s', re.MULTILINE | re.UNICODE) + provider = None - def __init__(self, edoc, parse_dublincore=True): + def __init__(self, edoc, parse_dublincore=True, provider=None, + strict=False, meta_fallbacks=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) @@ -34,17 +37,18 @@ class WLDocument(object): 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, fallbacks=meta_fallbacks, strict=strict) else: self.book_info = None - + @classmethod - def from_string(cls, xml, swap_endlines=False, parse_dublincore=True): - return cls.from_file(StringIO(xml), swap_endlines, parse_dublincore=parse_dublincore) + def from_string(cls, xml, *args, **kwargs): + return cls.from_file(StringIO(xml), *args, **kwargs) @classmethod - def from_file(cls, xmlfile, swap_endlines=False, parse_dublincore=True): + def from_file(cls, xmlfile, *args, **kwargs): # first, prepare for parsing if isinstance(xmlfile, basestring): @@ -59,23 +63,54 @@ class WLDocument(object): if not isinstance(data, unicode): data = data.decode('utf-8') - if swap_endlines: - data = cls.LINE_SWAP_EXPR.sub(u'
\n', data) - + data = data.replace(u'\ufeff', '') + try: parser = etree.XMLParser(remove_blank_text=False) - return cls(etree.parse(StringIO(data), parser), parse_dublincore=parse_dublincore) + tree = etree.parse(StringIO(data.encode('utf-8')), parser) + + return cls(tree, *args, **kwargs) except (ExpatError, XMLSyntaxError, XSLTApplyError), e: - raise ParseError(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 + # convert the path to XPath expr = self.path_to_xpath(path) elems = self.edoc.xpath(expr) if len(elems) == 0: return None - else: + else: return elems[0] def path_to_xpath(self, path): @@ -114,8 +149,80 @@ class WLDocument(object): 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); + node.getparent().replace(node, repl) except Exception, e: unmerged.append( repr( (key, xpath, e) ) ) - return unmerged \ No newline at end of file + 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 + + def editors(self): + """Returns a set of all editors for book and its children. + + :returns: set of dcparser.Person objects + """ + if self.book_info is None: + raise NoDublinCore('No Dublin Core in document.') + persons = set(self.book_info.editors + + self.book_info.technical_editors) + for child in self.parts(): + persons.update(child.editors()) + if None in persons: + persons.remove(None) + return persons + + # 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 as_fb2(self, *args, **kwargs): + from librarian import fb2 + return fb2.transform(self, *args, **kwargs) + + def as_cover(self, cover_class=None, *args, **kwargs): + if cover_class is None: + cover_class = DefaultEbookCover + return cover_class(self.book_info, *args, **kwargs).output_file() + + 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.uri.slug) + if ext: + save_path += '.%s' % ext + else: + save_path = output_path + + output_file.save_as(save_path)