--- /dev/null
+# -*- 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.
+#
+from __future__ import print_function, unicode_literals
+
+import os
+import re
+import copy
+
+from lxml import etree
+from librarian import XHTMLNS, ParseError, OutputFile
+from librarian import functions
+
+from lxml.etree import XMLSyntaxError, XSLTApplyError
+import six
+
+
+functions.reg_substitute_entities()
+functions.reg_person_name()
+
+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 html_has_content(text):
+ return etree.ETXPath('//p|//{%(ns)s}p|//h1|//{%(ns)s}h1' % {'ns': str(XHTMLNS)})(text)
+
+
+def transform_abstrakt(abstrakt_element):
+ style_filename = get_stylesheet('legacy')
+ style = etree.parse(style_filename)
+ xml = etree.tostring(abstrakt_element, encoding='unicode')
+ document = etree.parse(six.StringIO(xml.replace('abstrakt', 'dlugi_cytat'))) # HACK
+ result = document.xslt(style)
+ html = re.sub('<a name="sec[0-9]*"/>', '', etree.tostring(result, encoding='unicode'))
+ return re.sub('</?blockquote[^>]*>', '', html)
+
+
+def transform(wldoc, stylesheet='legacy', options=None, flags=None, css=None):
+ """Transforms the WL document to 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
+ try:
+ style_filename = get_stylesheet(stylesheet)
+ style = etree.parse(style_filename)
+
+ document = copy.deepcopy(wldoc)
+ del wldoc
+ document.swap_endlines()
+
+ if flags:
+ for flag in flags:
+ document.edoc.getroot().set(flag, 'yes')
+
+ document.clean_ed_note()
+ document.clean_ed_note('abstrakt')
+
+ if not options:
+ options = {}
+ options.setdefault('gallery', "''")
+
+ css = css or 'https://static.wolnelektury.pl/css/compressed/book_text.css'
+ css = "'%s'" % css
+ result = document.transform(style, css=css, **options)
+ del document # no longer needed large object :)
+
+ if html_has_content(result):
+ add_anchors(result.getroot())
+ add_table_of_themes(result.getroot())
+ add_table_of_contents(result.getroot())
+
+ return OutputFile.from_bytes(etree.tostring(
+ result, method='html', xml_declaration=False, pretty_print=True, encoding='utf-8'))
+ else:
+ return None
+ except KeyError:
+ raise ValueError("'%s' is not a valid stylesheet.")
+ except (XMLSyntaxError, XSLTApplyError) as e:
+ raise ParseError(e)
+
+
+@six.python_2_unicode_compatible
+class Fragment(object):
+ def __init__(self, id, themes):
+ super(Fragment, self).__init__()
+ self.id = id
+ self.themes = themes
+ self.events = []
+
+ def append(self, event, element):
+ self.events.append((event, element))
+
+ def closed_events(self):
+ stack = []
+ for event, element in self.events:
+ if event == 'start':
+ stack.append(('end', element))
+ elif event == 'end':
+ try:
+ stack.pop()
+ except IndexError:
+ print('CLOSED NON-OPEN TAG:', element)
+
+ stack.reverse()
+ return self.events + stack
+
+ def to_string(self):
+ result = []
+ for event, element in self.closed_events():
+ if event == 'start':
+ result.append(u'<%s %s>' % (
+ element.tag, ' '.join('%s="%s"' % (k, v) for k, v in element.attrib.items())))
+ if element.text:
+ result.append(element.text)
+ elif event == 'end':
+ result.append(u'</%s>' % element.tag)
+ if element.tail:
+ result.append(element.tail)
+ else:
+ result.append(element)
+
+ return ''.join(result)
+
+ def __str__(self):
+ return self.to_string()
+
+
+def extract_fragments(input_filename):
+ """Extracts theme fragments from input_filename."""
+ open_fragments = {}
+ closed_fragments = {}
+
+ # iterparse would die on a HTML document
+ parser = etree.HTMLParser(encoding='utf-8')
+ buf = six.BytesIO()
+ buf.write(etree.tostring(etree.parse(input_filename, parser).getroot()[0][0], encoding='utf-8'))
+ buf.seek(0)
+
+ for event, element in etree.iterparse(buf, events=('start', 'end')):
+ # Process begin and end elements
+ if element.get('class', '') in ('theme-begin', 'theme-end'):
+ if not event == 'end':
+ continue # Process elements only once, on end event
+
+ # Open new fragment
+ if element.get('class', '') == 'theme-begin':
+ fragment = Fragment(id=element.get('fid'), themes=element.text)
+
+ # Append parents
+ parent = element.getparent()
+ parents = []
+ while parent.get('id', None) != 'book-text':
+ cparent = copy.deepcopy(parent)
+ cparent.text = None
+ parents.append(cparent)
+ parent = parent.getparent()
+
+ parents.reverse()
+ for parent in parents:
+ fragment.append('start', parent)
+
+ open_fragments[fragment.id] = fragment
+
+ # Close existing fragment
+ else:
+ try:
+ fragment = open_fragments[element.get('fid')]
+ except KeyError:
+ print('%s:closed not open fragment #%s' % (input_filename, element.get('fid')))
+ else:
+ closed_fragments[fragment.id] = fragment
+ del open_fragments[fragment.id]
+
+ # Append element tail to lost_text (we don't want to lose any text)
+ if element.tail:
+ for fragment_id in open_fragments:
+ open_fragments[fragment_id].append('text', element.tail)
+
+ # Process all elements except begin and end
+ else:
+ # Omit annotation tags
+ if (len(element.get('name', '')) or
+ element.get('class', '') in ('annotation', 'anchor')):
+ if event == 'end' and element.tail:
+ for fragment_id in open_fragments:
+ open_fragments[fragment_id].append('text', element.tail)
+ else:
+ for fragment_id in open_fragments:
+ open_fragments[fragment_id].append(event, copy.copy(element))
+
+ return closed_fragments, open_fragments
+
+
+def add_anchor(element, prefix, with_link=True, with_target=True, link_text=None):
+ parent = element.getparent()
+ index = parent.index(element)
+
+ if with_link:
+ if link_text is None:
+ link_text = prefix
+ anchor = etree.Element('a', href='#%s' % prefix)
+ anchor.set('class', 'anchor')
+ anchor.text = six.text_type(link_text)
+ parent.insert(index, anchor)
+
+ if with_target:
+ anchor_target = etree.Element('a', name='%s' % prefix)
+ anchor_target.set('class', 'target')
+ anchor_target.text = u' '
+ parent.insert(index, anchor_target)
+
+
+def any_ancestor(element, test):
+ for ancestor in element.iterancestors():
+ if test(ancestor):
+ return True
+ return False
+
+
+def add_anchors(root):
+ counter = 1
+ for element in root.iterdescendants():
+ def f(e):
+ return e.get('class') in ('note', 'motto', 'motto_podpis', 'dedication', 'frame') or \
+ e.get('id') == 'nota_red' or e.tag == 'blockquote'
+ if any_ancestor(element, f):
+ continue
+
+ if element.tag == 'div' and 'verse' in element.get('class', ''):
+ if counter == 1 or counter % 5 == 0:
+ add_anchor(element, "f%d" % counter, link_text=counter)
+ counter += 1
+ elif 'paragraph' in element.get('class', ''):
+ add_anchor(element, "f%d" % counter, link_text=counter)
+ counter += 1
+
+
+def raw_printable_text(element):
+ working = copy.deepcopy(element)
+ for e in working.findall('a'):
+ if e.get('class') in ('annotation', 'theme-begin'):
+ e.text = ''
+ return etree.tostring(working, method='text', encoding='unicode').strip()
+
+
+def add_table_of_contents(root):
+ sections = []
+ counter = 1
+ for element in root.iterdescendants():
+ if element.tag in ('h2', 'h3'):
+ if any_ancestor(element,
+ lambda e: e.get('id') in ('footnotes', 'nota_red') or e.get('class') in ('person-list',)):
+ continue
+
+ element_text = raw_printable_text(element)
+ if element.tag == 'h3' and len(sections) and sections[-1][1] == 'h2':
+ sections[-1][3].append((counter, element.tag, element_text, []))
+ else:
+ sections.append((counter, element.tag, element_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')
+ toc_header.text = u'Spis treści'
+ toc_list = etree.SubElement(toc, 'ol')
+
+ 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 n1, subsection, subtext, _ in subsections:
+ subsection_element = etree.SubElement(subsection_list, 'li')
+ add_anchor(subsection_element, "s%d" % n1, with_target=False, link_text=subtext)
+
+ root.insert(0, toc)
+
+
+def add_table_of_themes(root):
+ try:
+ from sortify import sortify
+ except ImportError:
+ def sortify(x):
+ return x
+
+ book_themes = {}
+ for fragment in root.findall('.//a[@class="theme-begin"]'):
+ if not fragment.text:
+ continue
+ theme_names = [s.strip() for s in fragment.text.split(',')]
+ for theme_name in theme_names:
+ book_themes.setdefault(theme_name, []).append(fragment.get('name'))
+ book_themes = list(book_themes.items())
+ book_themes.sort(key=lambda s: sortify(s[0]))
+ themes_div = etree.Element('div', id="themes")
+ themes_ol = etree.SubElement(themes_div, 'ol')
+ for theme_name, fragments in book_themes:
+ themes_li = etree.SubElement(themes_ol, 'li')
+ themes_li.text = "%s: " % theme_name
+ for i, fragment in enumerate(fragments):
+ item = etree.SubElement(themes_li, 'a', href="#%s" % fragment)
+ item.text = str(i + 1)
+ item.tail = ' '
+ root.insert(0, themes_div)
+
+
+def extract_annotations(html_path):
+ """Extracts annotations from HTML for annotations dictionary.
+
+ For each annotation, yields a tuple of:
+ anchor, footnote type, valid qualifiers, text, html.
+
+ """
+ from .fn_qualifiers import FN_QUALIFIERS
+
+ parser = etree.HTMLParser(encoding='utf-8')
+ tree = etree.parse(html_path, parser)
+ footnotes = tree.find('//*[@id="footnotes"]')
+ re_qualifier = re.compile(r'[^\u2014]+\s+\(([^\)]+)\)\s+\u2014')
+ if footnotes is not None:
+ for footnote in footnotes.findall('div'):
+ fn_type = footnote.get('class').split('-')[1]
+ anchor = footnote.find('a[@class="annotation"]').get('href')[1:]
+ del footnote[:2]
+ footnote.text = None
+ if len(footnote) and footnote[-1].tail == '\n':
+ footnote[-1].tail = None
+ text_str = etree.tostring(footnote, method='text', encoding='unicode').strip()
+ html_str = etree.tostring(footnote, method='html', encoding='unicode').strip()
+
+ match = re_qualifier.match(text_str)
+ if match:
+ qualifier_str = match.group(1)
+ qualifiers = []
+ for candidate in re.split('[;,]', qualifier_str):
+ candidate = candidate.strip()
+ if candidate in FN_QUALIFIERS:
+ qualifiers.append(candidate)
+ elif candidate.startswith('z '):
+ subcandidate = candidate.split()[1]
+ if subcandidate in FN_QUALIFIERS:
+ qualifiers.append(subcandidate)
+ else:
+ qualifiers = []
+
+ yield anchor, fn_type, qualifiers, text_str, html_str
fnp / librarian.git / blobdiff