+++ /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 with_statement
-
-import os
-import os.path
-import subprocess
-from copy import deepcopy
-from lxml import etree
-import zipfile
-from tempfile import mkdtemp
-from shutil import rmtree
-
-import sys
-sys.path.append('..') # for running from working copy
-
-from librarian import XMLNamespace, RDFNS, DCNS, WLNS, NCXNS, OPFNS, NoDublinCore
-from librarian.dcparser import BookInfo
-
-
-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) 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)
- <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):
- if isinstance(xml, etree._Element):
- xml = etree.ElementTree(xml)
- with open(sheet) as xsltf:
- return xml.xslt(etree.parse(xsltf))
-
-
-_resdir = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'epub')
-def res(fname):
- return os.path.join(_resdir, fname)
-
-
-def replace_characters(node):
- def replace_chars(text):
- if text is None:
- return None
- return text.replace("---", u"\u2014")\
- .replace("--", u"\u2013")\
- .replace(",,", u"\u201E")\
- .replace('"', u"\u201D")\
- .replace("'", u"\u2019")
- if node.tag == 'extra':
- node.clear()
- else:
- 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', 'podtytul'):
- find_annotations(annotations, child, part_no)
-
-
-def replace_by_verse(tree):
- """ Find stanzas and create new verses in place of a '/' character """
-
- stanzas = tree.findall('.//' + WLNS('strofa'))
- for node in stanzas:
- for child_node in node:
- if child_node.tag in ('slowo_obce', 'wyroznienie'):
- foreign_verses = inner_xml(child_node).split('/\n')
- if len(foreign_verses) > 1:
- new_foreign = ''
- for foreign_verse in foreign_verses:
- if foreign_verse.startswith('<wers'):
- new_foreign += foreign_verse
- else:
- new_foreign += ''.join(('<wers_normalny>', foreign_verse, '</wers_normalny>'))
- set_inner_xml(child_node, new_foreign)
- verses = inner_xml(node).split('/\n')
- if len(verses) > 1:
- modified_inner_xml = ''
- for verse in verses:
- if verse.startswith('<wers') or verse.startswith('<extra'):
- modified_inner_xml += verse
- else:
- modified_inner_xml += ''.join(('<wers_normalny>', verse, '</wers_normalny>'))
- set_inner_xml(node, modified_inner_xml)
-
-
-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_number=None):
- self.children = []
- self.name = name
- self.part_number = part_number
- self.sub_number = None
-
- def add(self, name, part_number, level=0, is_part=True):
- if level > 0 and self.children:
- return self.children[-1].add(name, part_number, level-1, is_part)
- else:
- t = TOC(name)
- t.part_number = part_number
- 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 write_to_xml(self, nav_map, counter):
- 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'))
- text.text = child.name
- nav_label.append(text)
- nav_point.append(nav_label)
-
- content = nav_map.makeelement(NCXNS('content'))
- src = 'part%d.html' % child.part_number
- if child.sub_number is not None:
- src += '#sub%d' % child.sub_number
- content.set('src', src)
- nav_point.append(content)
- nav_map.append(nav_point)
- counter = child.write_to_xml(nav_point, counter + 1)
- return counter
-
-
-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
- for one_part in main_text:
- name = one_part.tag
- 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):
- """ 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 in ("naglowek_czesc", "naglowek_rozdzial", "naglowek_akt", "srodtytul"):
- toc.add(node_name(element), chunk_no)
- elif element.tag in ('naglowek_podrozdzial', 'naglowek_scena'):
- subnumber = toc.add(node_name(element), chunk_no, level=1, is_part=False)
- element.set('sub', str(subnumber))
- find_annotations(annotations, chunk_xml, chunk_no)
- replace_by_verse(chunk_xml)
- html_tree = xslt(chunk_xml, res('xsltScheme.xsl'))
- chars = used_chars(html_tree.getroot())
- output_html = etree.tostring(html_tree, pretty_print=True)
- return output_html, toc, chars
-
-
-def transform(provider, slug, output_file=None, output_dir=None):
- """ produces an epub
-
- provider is a DocProvider
- either output_file (a file-like object) or output_dir (path to file/dir) should be specified
- if output_dir is specified, file will be written to <output_dir>/<author>/<slug>.epub
- """
-
- def transform_file(input_xml, chunk_counter=1, first=True):
- """ processes one input file and proceeds to its children """
-
- children = [child.text for child in input_xml.findall('.//'+DCNS('relation.hasPart'))]
-
- # every input file will have a TOC entry,
- # pointing to starting chunk
- toc = TOC(node_name(input_xml.find('.//'+DCNS('title'))), chunk_counter)
- chars = set()
- if first:
- # write book title page
- html_tree = xslt(input_xml, res('xsltTitle.xsl'))
- chars = used_chars(html_tree.getroot())
- zip.writestr('OPS/title.html',
- etree.tostring(html_tree, pretty_print=True))
- elif children:
- # write title page for every parent
- html_tree = xslt(input_xml, res('xsltChunkTitle.xsl'))
- chars = used_chars(html_tree.getroot())
- zip.writestr('OPS/part%d.html' % chunk_counter,
- etree.tostring(html_tree, pretty_print=True))
- add_to_manifest(manifest, chunk_counter)
- add_to_spine(spine, chunk_counter)
- chunk_counter += 1
-
- if len(input_xml.getroot()) > 1:
- # rdf before style master
- main_text = input_xml.getroot()[1]
- else:
- # rdf in style master
- main_text = input_xml.getroot()[0]
- if main_text.tag == RDFNS('RDF'):
- main_text = None
-
- if main_text is not None:
- replace_characters(main_text)
-
- for chunk_xml in chop(main_text):
- chunk_html, chunk_toc, chunk_chars = transform_chunk(chunk_xml, chunk_counter, annotations)
- toc.extend(chunk_toc)
- chars = chars.union(chunk_chars)
- zip.writestr('OPS/part%d.html' % chunk_counter, chunk_html)
- add_to_manifest(manifest, chunk_counter)
- add_to_spine(spine, chunk_counter)
- chunk_counter += 1
-
- if children:
- for child in children:
- child_xml = etree.parse(provider.by_uri(child))
- child_toc, chunk_counter, chunk_chars = transform_file(child_xml, chunk_counter, first=False)
- toc.append(child_toc)
- chars = chars.union(chunk_chars)
-
- return toc, chunk_counter, chars
-
- # read metadata from the first file
- input_xml = etree.parse(provider[slug])
- metadata = input_xml.find('.//'+RDFNS('Description'))
- if metadata is None:
- raise NoDublinCore('Document has no DublinCore - which is required.')
- book_info = BookInfo.from_element(input_xml)
- metadata = etree.ElementTree(metadata)
-
- # if output to dir, create the file
- if output_dir is not None:
- author = unicode(book_info.author)
- author_dir = os.path.join(output_dir, author)
- try:
- os.makedirs(author_dir)
- except OSError:
- pass
- output_file = open(os.path.join(author_dir, '%s.epub' % slug), 'w')
-
-
- zip = zipfile.ZipFile(output_file, 'w', zipfile.ZIP_DEFLATED)
-
- # write static elements
- mime = zipfile.ZipInfo()
- mime.filename = 'mimetype'
- mime.compress_type = zipfile.ZIP_STORED
- mime.extra = ''
- zip.writestr(mime, 'application/epub+zip')
- zip.writestr('META-INF/container.xml', '<?xml version="1.0" ?><container version="1.0" ' \
- 'xmlns="urn:oasis:names:tc:opendocument:xmlns:container">' \
- '<rootfiles><rootfile full-path="OPS/content.opf" ' \
- 'media-type="application/oebps-package+xml" />' \
- '</rootfiles></container>')
- for fname in 'style.css', 'logo_wolnelektury.png':
- zip.write(res(fname), os.path.join('OPS', fname))
-
- opf = xslt(metadata, res('xsltContent.xsl'))
- manifest = opf.find('.//' + OPFNS('manifest'))
- spine = opf.find('.//' + OPFNS('spine'))
-
- annotations = etree.Element('annotations')
-
- toc_file = etree.fromstring('<?xml version="1.0" encoding="utf-8"?><!DOCTYPE ncx PUBLIC ' \
- '"-//NISO//DTD ncx 2005-1//EN" "http://www.daisy.org/z3986/2005/ncx-2005-1.dtd">' \
- '<ncx xmlns="http://www.daisy.org/z3986/2005/ncx/" xml:lang="pl" ' \
- 'version="2005-1"><head></head><docTitle></docTitle><navMap>' \
- '<navPoint id="NavPoint-1" playOrder="1"><navLabel>' \
- '<text>Strona tytułowa</text></navLabel><content src="title.html" />' \
- '</navPoint></navMap></ncx>')
- nav_map = toc_file[-1]
-
- toc, chunk_counter, chars = transform_file(input_xml)
-
- if not toc.children:
- toc.add(u"Początek utworu", 1)
- toc_counter = toc.write_to_xml(nav_map, 2)
-
- # Last modifications in container files and EPUB creation
- if len(annotations) > 0:
- nav_map.append(etree.fromstring(
- '<navPoint id="NavPoint-%(i)d" playOrder="%(i)d" ><navLabel><text>Przypisy</text>'\
- '</navLabel><content src="annotations.html" /></navPoint>' % {'i': toc_counter}))
- 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, res("xsltAnnotations.xsl"))
- chars = chars.union(used_chars(html_tree.getroot()))
- zip.writestr('OPS/annotations.html', etree.tostring(
- html_tree, pretty_print=True))
-
- # strip fonts
- tmpdir = mkdtemp('-librarian-epub')
- cwd = os.getcwd()
-
- 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':
- subprocess.check_call(['./subset.pl', '--chars', ''.join(chars).encode('utf-8'), res('../fonts/' + fname), os.path.join(tmpdir, fname)])
- zip.write(os.path.join(tmpdir, fname), os.path.join('OPS', fname))
- rmtree(tmpdir)
- os.chdir(cwd)
-
- zip.writestr('OPS/content.opf', etree.tostring(opf, pretty_print=True))
- contents = []
- title = node_name(etree.ETXPath('.//'+DCNS('title'))(input_xml)[0])
- 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', ''.join((title, 'WolneLektury.pl')))
- toc_file[0][1].set('content', str(toc.depth()))
- set_inner_xml(toc_file[1], ''.join(('<text>', title, '</text>')))
- zip.writestr('OPS/toc.ncx', etree.tostring(toc_file, pretty_print=True))
- zip.close()
-
-
-if __name__ == '__main__':
- from librarian import DirDocProvider
-
- if len(sys.argv) < 2:
- print >> sys.stderr, 'Usage: python epub.py <input file>'
- sys.exit(1)
-
- main_input = sys.argv[1]
- basepath, ext = os.path.splitext(main_input)
- path, slug = os.path.realpath(basepath).rsplit('/', 1)
- provider = DirDocProvider(path)
- transform(provider, slug, output_dir=path)
-
fnp / librarian.git / blobdiff