fix
[librarian.git] / src / librarian / epub.py
index be9488a..7dbfc49 100644 (file)
-# -*- 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.
+# Copyright © Fundacja Wolne Lektury. See NOTICE for more information.
 #
-from __future__ import print_function, unicode_literals
-
-import os
-import os.path
 import re
-import subprocess
-from six import BytesIO
 from copy import deepcopy
-from mimetypes import guess_type
-
 from lxml import etree
-import zipfile
-from tempfile import mkdtemp, NamedTemporaryFile
-from shutil import rmtree
-
-from librarian import RDFNS, WLNS, NCXNS, OPFNS, XHTMLNS, DCNS, OutputFile
-from librarian.cover import make_cover
-
-from librarian import functions, get_resource
-
-from librarian.hyphenator import Hyphenator
-
-functions.reg_person_name()
-functions.reg_lang_code_3to2()
-
-
-def squeeze_whitespace(s):
-    return re.sub(b'\\s+', b' ', s)
-
-
-def set_hyph_language(source_tree):
-    def get_short_lng_code(text):
-        result = ''
-        text = ''.join(text)
-        with open(get_resource('res/ISO-639-2_8859-1.txt'), 'rb') as f:
-            for line in f.read().decode('latin1').split('\n'):
-                list = line.strip().split('|')
-                if list[0] == text:
-                    result = list[2]
-        if result == '':
-            return text
-        else:
-            return result
-    bibl_lng = etree.XPath('//dc:language//text()',
-                           namespaces={'dc': str(DCNS)})(source_tree)
-    short_lng = get_short_lng_code(bibl_lng[0])
-    try:
-        return Hyphenator(get_resource('res/hyph-dictionaries/hyph_' +
-                                       short_lng + '.dic'))
-    except:
-        pass
-
-
-def hyphenate_and_fix_conjunctions(source_tree, hyph):
-    texts = etree.XPath('/utwor/*[2]//text()')(source_tree)
-    for t in texts:
-        parent = t.getparent()
-        if hyph is not None:
-            newt = ''
-            wlist = re.compile(r'\w+|[^\w]', re.UNICODE).findall(t)
-            for w in wlist:
-                newt += hyph.inserted(w, u'\u00AD')
-        else:
-            newt = t
-        newt = re.sub(r'(?<=\s\w)\s+', u'\u00A0', newt)
-        if t.is_text:
-            parent.text = newt
-        elif t.is_tail:
-            parent.tail = newt
 
+from librarian import WLNS
 
-def inner_xml(node):
-    """ returns node's text and children as a string
 
-    >>> print(inner_xml(etree.fromstring('<a>x<b>y</b>z</a>')))
-    x<b>y</b>z
-    """
-
-    nt = node.text if node.text is not None else ''
-    return ''.join([nt] + [etree.tostring(child, encoding='unicode') for child in node])
-
-
-def set_inner_xml(node, text):
-    """ sets node's text and children from a string
-
-    >>> e = etree.fromstring('<a>b<b>x</b>x</a>')
-    >>> set_inner_xml(e, 'x<b>y</b>z')
-    >>> print(etree.tostring(e, encoding='unicode'))
-    <a>x<b>y</b>z</a>
-    """
-
-    p = etree.fromstring('<x>%s</x>' % text)
-    node.text = p.text
-    node[:] = p[:]
-
-
-def node_name(node):
-    """ Find out a node's name
-
-    >>> print(node_name(etree.fromstring('<a>X<b>Y</b>Z</a>')))
-    XYZ
-    """
-
-    tempnode = deepcopy(node)
-
-    for p in ('pe', 'pa', 'pt', 'pr', 'motyw'):
-        for e in tempnode.findall('.//%s' % p):
-            t = e.tail
-            e.clear()
-            e.tail = t
-    etree.strip_tags(tempnode, '*')
-    return tempnode.text
-
-
-def xslt(xml, sheet, **kwargs):
-    if isinstance(xml, etree._Element):
-        xml = etree.ElementTree(xml)
-    with open(sheet) as xsltf:
-        transform = etree.XSLT(etree.parse(xsltf))
-        params = dict((key, transform.strparam(value)) for key, value in kwargs.items())
-        return transform(xml, **params)
-
-
-def replace_characters(node):
-    def replace_chars(text):
-        if text is None:
-            return None
-        return text.replace(u"\ufeff", u"")\
-                   .replace("---", u"\u2014")\
-                   .replace("--", u"\u2013")\
-                   .replace(",,", u"\u201E")\
-                   .replace('"', u"\u201D")\
-                   .replace("'", u"\u2019")
-    if node.tag in ('uwaga', 'extra'):
-        t = node.tail
-        node.clear()
-        node.tail = t
-    node.text = replace_chars(node.text)
-    node.tail = replace_chars(node.tail)
-    for child in node:
-        replace_characters(child)
-
-
-def find_annotations(annotations, source, part_no):
-    for child in source:
-        if child.tag in ('pe', 'pa', 'pt', 'pr'):
-            annotation = deepcopy(child)
-            number = str(len(annotations) + 1)
-            annotation.set('number', number)
-            annotation.set('part', str(part_no))
-            annotation.tail = ''
-            annotations.append(annotation)
-            tail = child.tail
-            child.clear()
-            child.tail = tail
-            child.text = number
-        if child.tag not in ('extra', 'uwaga'):
-            find_annotations(annotations, child, part_no)
-
-
-class Stanza(object):
+class Stanza:
     """
     Converts / verse endings into verse elements in a stanza.
 
     Slashes may only occur directly in the stanza. Any slashes in subelements
     will be ignored, and the subelements will be put inside verse elements.
 
-    >>> s = etree.fromstring("<strofa>a <b>c</b> <b>c</b>/\\nb<x>x/\\ny</x>c/ \\nd</strofa>")
+    >>> s = etree.fromstring(
+    ...         "<strofa>a <b>c</b> <b>c</b>/\\nb<x>x/\\ny</x>c/ \\nd</strofa>"
+    ...     )
     >>> Stanza(s).versify()
-    >>> print(etree.tostring(s, encoding='unicode'))
-    <strofa><wers_normalny>a <b>c</b><b>c</b></wers_normalny><wers_normalny>b<x>x/
-    y</x>c</wers_normalny><wers_normalny>d</wers_normalny></strofa>
+    >>> print(etree.tostring(s, encoding='unicode', pretty_print=True).strip())
+    <strofa>
+      <wers_normalny>a <b>c</b><b>c</b></wers_normalny>
+      <wers_normalny>b<x>x/
+    y</x>c</wers_normalny>
+      <wers_normalny>d</wers_normalny>
+    </strofa>
 
     """
     def __init__(self, stanza_elem):
@@ -190,7 +41,10 @@ class Stanza(object):
         tail = self.stanza.tail
         self.stanza.clear()
         self.stanza.tail = tail
-        self.stanza.extend(verse for verse in self.verses if verse.text or len(verse) > 0)
+        self.stanza.extend(
+            verse for verse in self.verses
+            if verse.text or len(verse) > 0
+        )
 
     def open_normal_verse(self):
         self.open_verse = self.stanza.makeelement("wers_normalny")
@@ -233,486 +87,3 @@ def replace_by_verse(tree):
     stanzas = tree.findall('.//' + WLNS('strofa'))
     for stanza in stanzas:
         Stanza(stanza).versify()
-
-
-def add_to_manifest(manifest, partno):
-    """ Adds a node to the manifest section in content.opf file """
-
-    partstr = 'part%d' % partno
-    e = manifest.makeelement(
-        OPFNS('item'), attrib={'id': partstr, 'href': partstr + '.html',
-                               'media-type': 'application/xhtml+xml'}
-    )
-    manifest.append(e)
-
-
-def add_to_spine(spine, partno):
-    """ Adds a node to the spine section in content.opf file """
-
-    e = spine.makeelement(OPFNS('itemref'), attrib={'idref': 'part%d' % partno})
-    spine.append(e)
-
-
-class TOC(object):
-    def __init__(self, name=None, part_href=None):
-        self.children = []
-        self.name = name
-        self.part_href = part_href
-        self.sub_number = None
-
-    def add(self, name, part_href, level=0, is_part=True, index=None):
-        assert level == 0 or index is None
-        if level > 0 and self.children:
-            return self.children[-1].add(name, part_href, level - 1, is_part)
-        else:
-            t = TOC(name)
-            t.part_href = part_href
-            if index is not None:
-                self.children.insert(index, t)
-            else:
-                self.children.append(t)
-            if not is_part:
-                t.sub_number = len(self.children) + 1
-                return t.sub_number
-
-    def append(self, toc):
-        self.children.append(toc)
-
-    def extend(self, toc):
-        self.children.extend(toc.children)
-
-    def depth(self):
-        if self.children:
-            return max((c.depth() for c in self.children)) + 1
-        else:
-            return 0
-
-    def href(self):
-        src = self.part_href
-        if self.sub_number is not None:
-            src += '#sub%d' % self.sub_number
-        return src
-
-    def write_to_xml(self, nav_map, counter=1):
-        for child in self.children:
-            nav_point = nav_map.makeelement(NCXNS('navPoint'))
-            nav_point.set('id', 'NavPoint-%d' % counter)
-            nav_point.set('playOrder', str(counter))
-
-            nav_label = nav_map.makeelement(NCXNS('navLabel'))
-            text = nav_map.makeelement(NCXNS('text'))
-            if child.name is not None:
-                text.text = re.sub(r'\n', ' ', child.name)
-            else:
-                text.text = child.name
-            nav_label.append(text)
-            nav_point.append(nav_label)
-
-            content = nav_map.makeelement(NCXNS('content'))
-            content.set('src', child.href())
-            nav_point.append(content)
-            nav_map.append(nav_point)
-            counter = child.write_to_xml(nav_point, counter + 1)
-        return counter
-
-    def html_part(self, depth=0):
-        texts = []
-        for child in self.children:
-            texts.append(
-                "<div style='margin-left:%dem;'><a href='%s'>%s</a></div>" %
-                (depth, child.href(), child.name))
-            texts.append(child.html_part(depth + 1))
-        return "\n".join(texts)
-
-    def html(self):
-        with open(get_resource('epub/toc.html'), 'rb') as f:
-            t = f.read().decode('utf-8')
-        return t % self.html_part()
-
-
-def used_chars(element):
-    """ Lists characters used in an ETree Element """
-    chars = set((element.text or '') + (element.tail or ''))
-    for child in element:
-        chars = chars.union(used_chars(child))
-    return chars
-
-
-def chop(main_text):
-    """ divide main content of the XML file into chunks """
-
-    # prepare a container for each chunk
-    part_xml = etree.Element('utwor')
-    etree.SubElement(part_xml, 'master')
-    main_xml_part = part_xml[0]  # master
-
-    last_node_part = False
-
-    # the below loop are workaround for a problem with epubs in drama ebooks without acts
-    is_scene = False
-    is_act = False
-    for one_part in main_text:
-        name = one_part.tag
-        if name == 'naglowek_scena':
-            is_scene = True
-        elif name == 'naglowek_akt':
-            is_act = True
-
-    for one_part in main_text:
-        name = one_part.tag
-        if is_act is False and is_scene is True:
-            if name == 'naglowek_czesc':
-                yield part_xml
-                last_node_part = True
-                main_xml_part[:] = [deepcopy(one_part)]
-            elif not last_node_part and name == "naglowek_scena":
-                yield part_xml
-                main_xml_part[:] = [deepcopy(one_part)]
-            else:
-                main_xml_part.append(deepcopy(one_part))
-                last_node_part = False
-        else:
-            if name == 'naglowek_czesc':
-                yield part_xml
-                last_node_part = True
-                main_xml_part[:] = [deepcopy(one_part)]
-            elif not last_node_part and name in ("naglowek_rozdzial", "naglowek_akt", "srodtytul"):
-                yield part_xml
-                main_xml_part[:] = [deepcopy(one_part)]
-            else:
-                main_xml_part.append(deepcopy(one_part))
-                last_node_part = False
-    yield part_xml
-
-
-def transform_chunk(chunk_xml, chunk_no, annotations, empty=False, _empty_html_static=[]):
-    """ transforms one chunk, returns a HTML string, a TOC object and a set of used characters """
-
-    toc = TOC()
-    for element in chunk_xml[0]:
-        if element.tag == "naglowek_czesc":
-            toc.add(node_name(element), "part%d.html#book-text" % chunk_no)
-        elif element.tag in ("naglowek_rozdzial", "naglowek_akt", "srodtytul"):
-            toc.add(node_name(element), "part%d.html" % chunk_no)
-        elif element.tag in ('naglowek_podrozdzial', 'naglowek_scena'):
-            subnumber = toc.add(node_name(element), "part%d.html" % chunk_no, level=1, is_part=False)
-            element.set('sub', str(subnumber))
-    if empty:
-        if not _empty_html_static:
-            _empty_html_static.append(open(get_resource('epub/emptyChunk.html')).read())
-        chars = set()
-        output_html = _empty_html_static[0]
-    else:
-        find_annotations(annotations, chunk_xml, chunk_no)
-        replace_by_verse(chunk_xml)
-        html_tree = xslt(chunk_xml, get_resource('epub/xsltScheme.xsl'))
-        chars = used_chars(html_tree.getroot())
-        output_html = etree.tostring(
-            html_tree, pretty_print=True, xml_declaration=True,
-            encoding="utf-8",
-            doctype='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" ' +
-                    '"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'
-        )
-    return output_html, toc, chars
-
-
-def transform(wldoc, verbose=False, style=None, html_toc=False,
-              sample=None, cover=None, flags=None, hyphenate=False, ilustr_path='', output_type='epub'):
-    """ produces a EPUB file
-
-    sample=n: generate sample e-book (with at least n paragraphs)
-    cover: a cover.Cover factory or True for default
-    flags: less-advertising, without-fonts, working-copy
-    """
-
-    def transform_file(wldoc, chunk_counter=1, first=True, sample=None):
-        """ processes one input file and proceeds to its children """
-
-        replace_characters(wldoc.edoc.getroot())
-
-        hyphenator = set_hyph_language(wldoc.edoc.getroot()) if hyphenate else None
-        hyphenate_and_fix_conjunctions(wldoc.edoc.getroot(), hyphenator)
-
-        # every input file will have a TOC entry,
-        # pointing to starting chunk
-        toc = TOC(wldoc.book_info.title, "part%d.html" % chunk_counter)
-        chars = set()
-        if first:
-            # write book title page
-            html_tree = xslt(wldoc.edoc, get_resource('epub/xsltTitle.xsl'), outputtype=output_type)
-            chars = used_chars(html_tree.getroot())
-            html_string = etree.tostring(
-                html_tree, pretty_print=True, xml_declaration=True,
-                encoding="utf-8",
-                doctype='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"' +
-                        ' "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'
-            )
-            zip.writestr('OPS/title.html', squeeze_whitespace(html_string))
-            # add a title page TOC entry
-            toc.add(u"Strona tytułowa", "title.html")
-        elif wldoc.book_info.parts:
-            # write title page for every parent
-            if sample is not None and sample <= 0:
-                chars = set()
-                html_string = open(get_resource('epub/emptyChunk.html')).read()
-            else:
-                html_tree = xslt(wldoc.edoc, get_resource('epub/xsltChunkTitle.xsl'))
-                chars = used_chars(html_tree.getroot())
-                html_string = etree.tostring(
-                    html_tree, pretty_print=True, xml_declaration=True,
-                    encoding="utf-8",
-                    doctype='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"' +
-                            ' "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'
-                )
-            zip.writestr('OPS/part%d.html' % chunk_counter, squeeze_whitespace(html_string))
-            add_to_manifest(manifest, chunk_counter)
-            add_to_spine(spine, chunk_counter)
-            chunk_counter += 1
-
-        if len(wldoc.edoc.getroot()) > 1:
-            # rdf before style master
-            main_text = wldoc.edoc.getroot()[1]
-        else:
-            # rdf in style master
-            main_text = wldoc.edoc.getroot()[0]
-            if main_text.tag == RDFNS('RDF'):
-                main_text = None
-
-        if main_text is not None:
-            for chunk_xml in chop(main_text):
-                empty = False
-                if sample is not None:
-                    if sample <= 0:
-                        empty = True
-                    else:
-                        sample -= len(chunk_xml.xpath('//strofa|//akap|//akap_cd|//akap_dialog'))
-                chunk_html, chunk_toc, chunk_chars = transform_chunk(chunk_xml, chunk_counter, annotations, empty)
-
-                toc.extend(chunk_toc)
-                chars = chars.union(chunk_chars)
-                zip.writestr('OPS/part%d.html' % chunk_counter, squeeze_whitespace(chunk_html))
-                add_to_manifest(manifest, chunk_counter)
-                add_to_spine(spine, chunk_counter)
-                chunk_counter += 1
-
-        for child in wldoc.parts():
-            child_toc, chunk_counter, chunk_chars, sample = transform_file(
-                child, chunk_counter, first=False, sample=sample)
-            toc.append(child_toc)
-            chars = chars.union(chunk_chars)
-
-        return toc, chunk_counter, chars, sample
-
-    document = deepcopy(wldoc)
-    del wldoc
-
-    if flags:
-        for flag in flags:
-            document.edoc.getroot().set(flag, 'yes')
-
-    document.clean_ed_note()
-    document.clean_ed_note('abstrakt')
-
-    # add editors info
-    editors = document.editors()
-    if editors:
-        document.edoc.getroot().set('editors', u', '.join(sorted(
-            editor.readable() for editor in editors)))
-    if document.book_info.funders:
-        document.edoc.getroot().set('funders', u', '.join(
-            document.book_info.funders))
-    if document.book_info.thanks:
-        document.edoc.getroot().set('thanks', document.book_info.thanks)
-
-    opf = xslt(document.book_info.to_etree(), get_resource('epub/xsltContent.xsl'))
-    manifest = opf.find('.//' + OPFNS('manifest'))
-    guide = opf.find('.//' + OPFNS('guide'))
-    spine = opf.find('.//' + OPFNS('spine'))
-
-    output_file = NamedTemporaryFile(prefix='librarian', suffix='.epub', delete=False)
-    zip = zipfile.ZipFile(output_file, 'w', zipfile.ZIP_DEFLATED)
-
-    functions.reg_mathml_epub(zip)
-
-    if os.path.isdir(ilustr_path):
-        ilustr_elements = set(ilustr.get('src') for ilustr in document.edoc.findall('//ilustr'))
-        for i, filename in enumerate(os.listdir(ilustr_path)):
-            if filename not in ilustr_elements:
-                continue
-            file_path = os.path.join(ilustr_path, filename)
-            zip.write(file_path, os.path.join('OPS', filename))
-            image_id = 'image%s' % i
-            manifest.append(etree.fromstring(
-                '<item id="%s" href="%s" media-type="%s" />' % (image_id, filename, guess_type(file_path)[0])))
-
-    # write static elements
-    mime = zipfile.ZipInfo()
-    mime.filename = 'mimetype'
-    mime.compress_type = zipfile.ZIP_STORED
-    mime.extra = b''
-    zip.writestr(mime, b'application/epub+zip')
-    zip.writestr(
-        'META-INF/container.xml',
-        b'<?xml version="1.0" ?>'
-        b'<container version="1.0" '
-        b'xmlns="urn:oasis:names:tc:opendocument:xmlns:container">'
-        b'<rootfiles><rootfile full-path="OPS/content.opf" '
-        b'media-type="application/oebps-package+xml" />'
-        b'</rootfiles></container>'
-    )
-    zip.write(get_resource('res/wl-logo-small.png'),
-              os.path.join('OPS', 'logo_wolnelektury.png'))
-    zip.write(get_resource('res/jedenprocent.png'),
-              os.path.join('OPS', 'jedenprocent.png'))
-    if not style:
-        style = get_resource('epub/style.css')
-    zip.write(style, os.path.join('OPS', 'style.css'))
-
-    if cover:
-        if cover is True:
-            cover = make_cover
-
-        cover_file = BytesIO()
-        bound_cover = cover(document.book_info)
-        bound_cover.save(cover_file)
-        cover_name = 'cover.%s' % bound_cover.ext()
-        zip.writestr(os.path.join('OPS', cover_name), cover_file.getvalue())
-        del cover_file
-
-        cover_tree = etree.parse(get_resource('epub/cover.html'))
-        cover_tree.find('//' + XHTMLNS('img')).set('src', cover_name)
-        zip.writestr('OPS/cover.html', etree.tostring(
-            cover_tree, pretty_print=True, xml_declaration=True,
-            encoding="utf-8",
-            doctype='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" ' +
-                    '"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'
-        ))
-
-        if bound_cover.uses_dc_cover:
-            if document.book_info.cover_by:
-                document.edoc.getroot().set('data-cover-by', document.book_info.cover_by)
-            if document.book_info.cover_source:
-                document.edoc.getroot().set('data-cover-source', document.book_info.cover_source)
-
-        manifest.append(etree.fromstring(
-            '<item id="cover" href="cover.html" media-type="application/xhtml+xml" />'))
-        manifest.append(etree.fromstring(
-            '<item id="cover-image" href="%s" media-type="%s" />' % (cover_name, bound_cover.mime_type())))
-        spine.insert(0, etree.fromstring('<itemref idref="cover"/>'))
-        opf.getroot()[0].append(etree.fromstring('<meta name="cover" content="cover-image"/>'))
-        guide.append(etree.fromstring('<reference href="cover.html" type="cover" title="Okładka"/>'))
-
-    annotations = etree.Element('annotations')
-
-    toc_file = etree.fromstring(
-        b'<?xml version="1.0" encoding="utf-8"?><!DOCTYPE ncx PUBLIC '
-        b'"-//NISO//DTD ncx 2005-1//EN" '
-        b'"http://www.daisy.org/z3986/2005/ncx-2005-1.dtd">'
-        b'<ncx xmlns="http://www.daisy.org/z3986/2005/ncx/" xml:lang="pl" '
-        b'version="2005-1"><head></head><docTitle></docTitle><navMap>'
-        b'</navMap></ncx>'
-    )
-    nav_map = toc_file[-1]
-
-    if html_toc:
-        manifest.append(etree.fromstring(
-            '<item id="html_toc" href="toc.html" media-type="application/xhtml+xml" />'))
-        spine.append(etree.fromstring(
-            '<itemref idref="html_toc" />'))
-        guide.append(etree.fromstring('<reference href="toc.html" type="toc" title="Spis treści"/>'))
-
-    toc, chunk_counter, chars, sample = transform_file(document, sample=sample)
-
-    if len(toc.children) < 2:
-        toc.add(u"Początek utworu", "part1.html")
-
-    # Last modifications in container files and EPUB creation
-    if len(annotations) > 0:
-        toc.add("Przypisy", "annotations.html")
-        manifest.append(etree.fromstring(
-            '<item id="annotations" href="annotations.html" media-type="application/xhtml+xml" />'))
-        spine.append(etree.fromstring(
-            '<itemref idref="annotations" />'))
-        replace_by_verse(annotations)
-        html_tree = xslt(annotations, get_resource('epub/xsltAnnotations.xsl'))
-        chars = chars.union(used_chars(html_tree.getroot()))
-        zip.writestr('OPS/annotations.html', etree.tostring(
-            html_tree, pretty_print=True, xml_declaration=True,
-            encoding="utf-8",
-            doctype='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" ' +
-                    '"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'
-        ))
-
-    toc.add("Wesprzyj Wolne Lektury", "support.html")
-    manifest.append(etree.fromstring(
-        '<item id="support" href="support.html" media-type="application/xhtml+xml" />'))
-    spine.append(etree.fromstring(
-        '<itemref idref="support" />'))
-    html_string = open(get_resource('epub/support.html'), 'rb').read()
-    chars.update(used_chars(etree.fromstring(html_string)))
-    zip.writestr('OPS/support.html', squeeze_whitespace(html_string))
-
-    toc.add("Strona redakcyjna", "last.html")
-    manifest.append(etree.fromstring(
-        '<item id="last" href="last.html" media-type="application/xhtml+xml" />'))
-    spine.append(etree.fromstring(
-        '<itemref idref="last" />'))
-    html_tree = xslt(document.edoc, get_resource('epub/xsltLast.xsl'), outputtype=output_type)
-    chars.update(used_chars(html_tree.getroot()))
-    zip.writestr('OPS/last.html', squeeze_whitespace(etree.tostring(
-        html_tree, pretty_print=True, xml_declaration=True,
-        encoding="utf-8",
-        doctype='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" ' +
-                '"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'
-    )))
-
-    if not flags or 'without-fonts' not in flags:
-        # strip fonts
-        tmpdir = mkdtemp('-librarian-epub')
-        try:
-            cwd = os.getcwd()
-        except OSError:
-            cwd = None
-
-        os.chdir(os.path.join(os.path.dirname(os.path.realpath(__file__)), 'font-optimizer'))
-        for fname in 'DejaVuSerif.ttf', 'DejaVuSerif-Bold.ttf', 'DejaVuSerif-Italic.ttf', 'DejaVuSerif-BoldItalic.ttf':
-            optimizer_call = ['perl', 'subset.pl', '--chars',
-                              ''.join(chars).encode('utf-8'),
-                              get_resource('fonts/' + fname),
-                              os.path.join(tmpdir, fname)]
-            env = {"PERL_USE_UNSAFE_INC": "1"}
-            if verbose:
-                print("Running font-optimizer")
-                subprocess.check_call(optimizer_call, env=env)
-            else:
-                dev_null = open(os.devnull, 'w')
-                subprocess.check_call(optimizer_call, stdout=dev_null, stderr=dev_null, env=env)
-            zip.write(os.path.join(tmpdir, fname), os.path.join('OPS', fname))
-            manifest.append(etree.fromstring(
-                '<item id="%s" href="%s" media-type="application/x-font-truetype" />' % (fname, fname)))
-        rmtree(tmpdir)
-        if cwd is not None:
-            os.chdir(cwd)
-    zip.writestr('OPS/content.opf', etree.tostring(opf, pretty_print=True,
-                 xml_declaration=True, encoding="utf-8"))
-    title = document.book_info.title
-    attributes = "dtb:uid", "dtb:depth", "dtb:totalPageCount", "dtb:maxPageNumber"
-    for st in attributes:
-        meta = toc_file.makeelement(NCXNS('meta'))
-        meta.set('name', st)
-        meta.set('content', '0')
-        toc_file[0].append(meta)
-    toc_file[0][0].set('content', str(document.book_info.url))
-    toc_file[0][1].set('content', str(toc.depth()))
-    set_inner_xml(toc_file[1], ''.join(('<text>', title, '</text>')))
-
-    # write TOC
-    if html_toc:
-        toc.add(u"Spis treści", "toc.html", index=1)
-        zip.writestr('OPS/toc.html', toc.html().encode('utf-8'))
-    toc.write_to_xml(nav_map)
-    zip.writestr('OPS/toc.ncx', etree.tostring(toc_file, pretty_print=True,
-                 xml_declaration=True, encoding="utf-8"))
-    zip.close()
-
-    return OutputFile.from_filename(output_file.name)