# -*- coding: utf-8 -*-
+#
+# This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
import os
import cStringIO
import re
from lxml import etree
from librarian.parser import WLDocument
+from librarian import XHTMLNS, ParseError
+from lxml.etree import XMLSyntaxError, XSLTApplyError
ENTITY_SUBSTITUTIONS = [
(u'---', u'—'),
(u'"', u'”'),
]
+STYLESHEETS = {
+ 'legacy': 'xslt/book2html.xslt',
+ 'full': 'xslt/wl2html_full.xslt',
+ 'partial': 'xslt/wl2html_partial.xslt'
+}
+
+def get_stylesheet(name):
+ return os.path.join(os.path.dirname(__file__), STYLESHEETS[name])
def substitute_entities(context, text):
"""XPath extension function converting all entites in passed text."""
text = text.replace(entity, substitutution)
return text
-
# Register substitute_entities function with lxml
ns = etree.FunctionNamespace('http://wolnelektury.pl/functions')
ns['substitute_entities'] = substitute_entities
+def html_has_content(text):
+ return etree.ETXPath('//p|//{%(ns)s}p|//h1|//{%(ns)s}h1' % {'ns': str(XHTMLNS)})(text)
-def transform(input, output_filename=None, is_file=True):
- """Transforms file input_filename in XML to output_filename in XHTML."""
+def transform(input, output_filename=None, is_file=True, \
+ parse_dublincore=True, stylesheet='legacy', options={}):
+ """Transforms file input_filename in XML to output_filename in XHTML.
+
+ If output_filename is None, returns an XML,
+ otherwise returns True if file has been written,False if it hasn't.
+ File won't be written if it has no content.
+ """
# Parse XSLT
- style_filename = os.path.join(os.path.dirname(__file__), 'book2html.xslt')
- style = etree.parse(style_filename)
-
- if is_file:
- document = WLDocument.from_file(input, True)
- else:
- document = WLDocument.from_string(input, True)
-
- result = document.transform(style)
- del document # no longer needed large object :)
-
- if result.find('//p') is not None:
- add_anchors(result.getroot())
- add_table_of_contents(result.getroot())
-
- if output_filename is not None:
- result.write(output_filename, xml_declaration=False, pretty_print=True, encoding='utf-8')
+ try:
+ style_filename = get_stylesheet(stylesheet)
+ style = etree.parse(style_filename)
+
+ if is_file:
+ document = WLDocument.from_file(input, True, \
+ parse_dublincore=parse_dublincore)
else:
- return result
- return True
- else:
- return False
+ document = WLDocument.from_string(input, True, \
+ parse_dublincore=parse_dublincore)
+ result = document.transform(style, **options)
+ del document # no longer needed large object :)
+
+ if html_has_content(result):
+ add_anchors(result.getroot())
+ add_table_of_contents(result.getroot())
+
+ if output_filename is not None:
+ result.write(output_filename, xml_declaration=False, pretty_print=True, encoding='utf-8')
+ else:
+ return result
+ return True
+ else:
+ if output_filename is not None:
+ return False
+ else:
+ return "<empty />"
+ except KeyError:
+ raise ValueError("'%s' is not a valid stylesheet.")
+ except (XMLSyntaxError, XSLTApplyError), e:
+ raise ParseError(e)
class Fragment(object):
def __init__(self, id, themes):
anchor.tail = element.text
element.text = u''
element.insert(0, anchor)
-
+
if with_target:
anchor_target = etree.Element('a', name='%s' % prefix)
anchor_target.set('class', 'target')
if any_ancestor(element, lambda e: e.get('class') in ('note', 'motto', 'motto_podpis', 'dedication')
or e.tag == 'blockquote'):
continue
-
+
if element.tag == 'p' and 'verse' in element.get('class', ''):
if counter == 1 or counter % 5 == 0:
add_anchor(element, "f%d" % counter, link_text=counter)
if element.tag in ('h2', 'h3'):
if any_ancestor(element, lambda e: e.get('id') in ('footnotes',) or e.get('class') in ('person-list',)):
continue
-
+
if element.tag == 'h3' and len(sections) and sections[-1][1] == 'h2':
sections[-1][3].append((counter, element.tag, ''.join(element.xpath('text()')), []))
else:
sections.append((counter, element.tag, ''.join(element.xpath('text()')), []))
add_anchor(element, "s%d" % counter, with_link=False)
counter += 1
-
+
toc = etree.Element('div')
toc.set('id', 'toc')
toc_header = etree.SubElement(toc, 'h2')
for n, section, text, subsections in sections:
section_element = etree.SubElement(toc_list, 'li')
add_anchor(section_element, "s%d" % n, with_target=False, link_text=text)
-
+
if len(subsections):
subsection_list = etree.SubElement(section_element, 'ol')
for n, subsection, text, _ in subsections:
subsection_element = etree.SubElement(subsection_list, 'li')
add_anchor(subsection_element, "s%d" % n, with_target=False, link_text=text)
-
+
root.insert(0, toc)
fnp / librarian.git / blobdiff