-
-
-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 = []
- for element in chunk_xml[0]:
- if element.tag == "naglowek_czesc":
- toc.append(
- (
- epub.Link(
- "part%d.xhtml#book-text" % chunk_no,
- node_name(element),
- "part%d-text" % chunk_no
- ),
- []
- )
- )
- elif element.tag in ("naglowek_rozdzial", "naglowek_akt", "srodtytul"):
- toc.append(
- (
- epub.Link(
- "part%d.xhtml" % chunk_no,
- node_name(element),
- "part%d" % chunk_no
- ),
- []
- )
- )
- elif element.tag in ('naglowek_podrozdzial', 'naglowek_scena'):
- if not toc:
- toc.append(
- (
- epub.Link(
- "part%d.xhtml" % chunk_no,
- " ",
- "part%d" % chunk_no
- ),
- []
- )
- )
-
- subnumber = len(toc[-1][1])
- toc[-1][1].append(
- epub.Link(
- "part%d.xhtml#sub%d" % (chunk_no, subnumber),
- node_name(element),
- "part%d-sub%d" % (chunk_no, subnumber)
- )
- )
- element.set('sub', six.text_type(subnumber))
- if empty:
- if not _empty_html_static:
- with open(get_resource('epub/emptyChunk.xhtml')) as f:
- _empty_html_static.append(f.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>'
- )
- return output_html, toc, chars
-
-
-def remove_empty_lists_from_toc(toc):
- for i, e in enumerate(toc):
- if isinstance(e, tuple):
- if e[1]:
- remove_empty_lists_from_toc(e[1])
- else:
- toc[i] = e[0]
-
-
-def transform(wldoc, verbose=False, style=None,
- sample=None, cover=None, flags=None, hyphenate=False,
- base_url='file://./', 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 = [
- (
- epub.Link(
- "part%d.xhtml" % chunk_counter,
- wldoc.book_info.title,
- "path%d-start" % 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>'
- )
- item = epub.EpubItem(
- uid="titlePage",
- file_name="title.xhtml",
- media_type="application/xhtml+xml",
- content=squeeze_whitespace(html_string)
- )
- spine.append(item)
- output.add_item(item)
- # add a title page TOC entry
- toc[-1][1].append(
- epub.Link(
- "title.xhtml",
- "Strona tytułowa",
- "title",
- )
- )
-
- item = epub.EpubNav()
- toc[-1][1].append(
- epub.Link(
- "nav.xhtml",
- "Spis treści",
- "nav"
- )
- )
- output.add_item(item)
- spine.append(item)
-
- toc[-1][1].append(
- epub.Link(
- "part1.xhtml",
- "Początek utworu",
- "part1"
- )
- )
-
- 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.xhtml')).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>'
- )
- item = epub.EpubItem(
- uid="part%d" % chunk_counter,
- file_name="part%d.xhtml" % chunk_counter,
- media_type="application/xhtml+xml",
- content=squeeze_whitespace(html_string)
- )
- output.add_item(item)
- spine.append(item)
-
- 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[-1][1].extend(chunk_toc)
- chars = chars.union(chunk_chars)
- item = epub.EpubItem(
- uid="part%d" % chunk_counter,
- file_name="part%d.xhtml" % chunk_counter,
- media_type="application/xhtml+xml",
- content=squeeze_whitespace(chunk_html)
- )
- output.add_item(item)
- spine.append(item)
- 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[-1][1].extend(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)
-
- output = epub.EpubBook()
- output.set_identifier(six.text_type(document.book_info.url))
- output.set_language(functions.lang_code_3to2(document.book_info.language))
- output.set_title(document.book_info.title)
- for i, author in enumerate(document.book_info.authors):
- output.add_author(
- author.readable(),
- file_as=six.text_type(author),
- uid='creator{}'.format(i)
- )
- for translator in document.book_info.translators:
- output.add_author(
- translator.readable(),
- file_as=six.text_type(translator),
- role='trl',
- uid='translator{}'.format(i)
- )
- for publisher in document.book_info.publisher:
- output.add_metadata("DC", "publisher", publisher)
- output.add_metadata("DC", "date", document.book_info.created_at)
-
- output.guide.append({
- "type": "text",
- "title": "Początek",
- "href": "part1.xhtml"
- })
-
- output.add_item(epub.EpubNcx())
-
- spine = output.spine
-
- functions.reg_mathml_epub(output)
-
- # FIXME
- for i, ilustr in enumerate(document.edoc.findall('//ilustr')):
- url = six.moves.urllib.parse.urljoin(
- base_url,
- ilustr.get('src')
- )
- with six.moves.urllib.request.urlopen(url) as imgfile:
- img = Image.open(imgfile)
-
- th_format, ext, media_type = {
- 'GIF': ('GIF', 'gif', 'image/gif'),
- 'PNG': ('PNG', 'png', 'image/png'),
- }.get(img.format, ('JPEG', 'jpg', 'image/jpeg'))
-
- width = 1200
- if img.size[0] < width:
- th = img
- else:
- th = img.resize((width, round(width * img.size[1] / img.size[0])))
-
- buffer = six.BytesIO()
- th.save(buffer, format=th_format)
-
- file_name = 'image%d.%s' % (i, ext)
- ilustr.set('src', file_name)
- output.add_item(
- epub.EpubItem(
- uid='image%s' % i,
- file_name=file_name,
- media_type=media_type,
- content=buffer.getvalue()
- )
- )
-
- # write static elements
-
- with open(get_resource('res/wl-logo-small.png'), 'rb') as f:
- output.add_item(
- epub.EpubItem(
- uid="logo_wolnelektury.png",
- file_name="logo_wolnelektury.png",
- media_type="image/png",
- content=f.read()
- )
- )
- with open(get_resource('res/jedenprocent.png'), 'rb') as f:
- output.add_item(
- epub.EpubItem(
- uid="jedenprocent",
- file_name="jedenprocent.png",
- media_type="image/png",
- content=f.read()
- )
- )
-
- if not style:
- style = get_resource('epub/style.css')
- with open(style, 'rb') as f:
- output.add_item(
- epub.EpubItem(
- uid="style",
- file_name="style.css",
- media_type="text/css",
- content=f.read()
- )
- )
-
- if cover:
- if cover is True:
- cover = make_cover
-
- cover_file = six.BytesIO()
- bound_cover = cover(document.book_info)
- bound_cover.save(cover_file)
- cover_name = 'cover.%s' % bound_cover.ext()
-
- output.set_cover(
- file_name=cover_name,
- content=cover_file.getvalue(),
- )
- spine.append('cover')
- output.guide.append({
- "type": "cover",
- "href": "cover.xhtml",
- "title": "Okładka",
- })
-
- del cover_file
-
- 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)
-
- annotations = etree.Element('annotations')
-
- toc, chunk_counter, chars, sample = transform_file(document, sample=sample)
- output.toc = toc[0][1]
-
- # Last modifications in container files and EPUB creation
- if len(annotations) > 0:
- output.toc.append(
- epub.Link(
- "annotations.xhtml",
- "Przypisy",
- "annotations"
- )
- )
- replace_by_verse(annotations)
- html_tree = xslt(annotations, get_resource('epub/xsltAnnotations.xsl'))
- chars = chars.union(used_chars(html_tree.getroot()))
-
- item = epub.EpubItem(
- uid="annotations",
- file_name="annotations.xhtml",
- media_type="application/xhtml+xml",
- content=etree.tostring(
- html_tree, pretty_print=True, xml_declaration=True,
- encoding="utf-8",
- doctype='<!DOCTYPE html>'
- )
- )
- output.add_item(item)
- spine.append(item)
-
- output.toc.append(
- epub.Link(
- "support.xhtml",
- "Wesprzyj Wolne Lektury",
- "support"
- )
- )
- with open(get_resource('epub/support.xhtml'), 'rb') as f:
- html_string = f.read()
- chars.update(used_chars(etree.fromstring(html_string)))
- item = epub.EpubItem(
- uid="support",
- file_name="support.xhtml",
- media_type="application/xhtml+xml",
- content=squeeze_whitespace(html_string)
- )
- output.add_item(item)
- spine.append(item)
-
- output.toc.append(
- epub.Link(
- "last.xhtml",
- "Strona redakcyjna",
- "last"
- )
- )
- html_tree = xslt(document.edoc, get_resource('epub/xsltLast.xsl'),
- outputtype=output_type)
- chars.update(used_chars(html_tree.getroot()))
- item = epub.EpubItem(
- uid="last",
- file_name="last.xhtml",
- media_type="application/xhtml+xml",
- content=squeeze_whitespace(etree.tostring(
- html_tree, pretty_print=True, xml_declaration=True,
- encoding="utf-8",
- doctype='<!DOCTYPE html>'
- ))
- )
- output.add_item(item)
- spine.append(item)
-
- 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)
- with open(os.path.join(tmpdir, fname), 'rb') as f:
- output.add_item(
- epub.EpubItem(
- uid=fname,
- file_name=fname,
- media_type="font/ttf",
- content=f.read()
- )
- )
- rmtree(tmpdir)
- if cwd is not None:
- os.chdir(cwd)
-
- remove_empty_lists_from_toc(output.toc)
-
- output_file = NamedTemporaryFile(prefix='librarian', suffix='.epub',
- delete=False)
- output_file.close()
- epub.write_epub(output_file.name, output, {'epub3_landmark': False})
- return OutputFile.from_filename(output_file.name)
fnp / librarian.git / blobdiff