X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/33db54c61d9818547c059e3e3cda2518a260bcda..167d19bdfe76a77754d2e14a80ac0c25c725c379:/librarian/epub.py diff --git a/librarian/epub.py b/librarian/epub.py index cb2166b..52294dd 100644 --- a/librarian/epub.py +++ b/librarian/epub.py @@ -7,16 +7,18 @@ from __future__ import with_statement import os import os.path -import shutil -import sys +import subprocess from copy import deepcopy from lxml import etree import zipfile +from tempfile import mkdtemp +from shutil import rmtree -from librarian import XMLNamespace, RDFNS, DCNS, WLNS, XHTMLNS +import sys +sys.path.append('..') # for running from working copy -NCXNS = XMLNamespace("http://www.daisy.org/z3986/2005/ncx/") -OPFNS = XMLNamespace("http://www.idpf.org/2007/opf") +from librarian import XMLNamespace, RDFNS, DCNS, WLNS, NCXNS, OPFNS, NoDublinCore +from librarian.dcparser import BookInfo def inner_xml(node): @@ -38,7 +40,6 @@ def set_inner_xml(node, text): xyz """ - p = etree.fromstring('%s' % text) node.text = p.text node[:] = p[:] @@ -78,12 +79,11 @@ def replace_characters(node): def replace_chars(text): if text is None: return None - return text.replace("&", "&")\ - .replace("---", "—")\ - .replace("--", "–")\ - .replace(",,", "„")\ - .replace('"', "”")\ - .replace("'", "’") + return text.replace("---", u"\u2014")\ + .replace("--", u"\u2013")\ + .replace(",,", u"\u201E")\ + .replace('"', u"\u201D")\ + .replace("'", u"\u2019") if node.tag == 'extra': node.clear() else: @@ -93,24 +93,26 @@ def replace_characters(node): replace_characters(child) -def find_annotations(annotations, source, part_number): +def find_annotations(annotations, source, part_no): for child in source: if child.tag in ('pe', 'pa', 'pt', 'pr'): annotation = deepcopy(child) - annotation.set('number', str(len(annotations)+1)) - annotation.set('part', str(part_number)) + 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 = str(len(annotations)) + child.text = number if child.tag not in ('extra', 'podtytul'): - find_annotations(annotations, child, part_number) + 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: @@ -137,6 +139,7 @@ def replace_by_verse(tree): 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, @@ -148,82 +151,217 @@ def add_to_manifest(manifest, partno): 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) -def add_nav_point(nav_map, counter, title, part_counter): - 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 = title - nav_label.append(text) - nav_point.append(nav_label) - - content = nav_map.makeelement(NCXNS('content')) - content.set('src', 'part%d.html' % part_counter) - nav_point.append(content) - - nav_map.append(nav_point) +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 -def add_nav_point2(nav_map, counter, title, part_counter, subcounter): - nav_point = nav_map.makeelement(NCXNS('navPoint')) - nav_point.set('id', 'NavPoint-%d' % counter) - nav_point.set('playOrder', str(counter)) + 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 - nav_label = nav_map.makeelement(NCXNS('navLabel')) - text = nav_map.makeelement(NCXNS('text')) - text.text = title - nav_label.append(text) - nav_point.append(nav_label) - content = nav_map.makeelement(NCXNS('content')) - content.set('src', 'part%d.html#sub%d' % (part_counter, subcounter)) - nav_point.append(content) +def transform_chunk(chunk_xml, chunk_no, annotations): + """ transforms one chunk, returns a HTML string, a TOC object and a set of used characters """ - nav_map[-1].append(nav_point) + 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(input_file, output_file): +def transform(provider, slug, output_file=None, output_dir=None): """ produces an epub - input_file and output_file should be filelike objects + 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 //.epub """ - input_xml = etree.parse(input_file) + 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', '' \ '' \ '') + for fname in 'style.css', 'logo_wolnelektury.png': + zip.write(res(fname), os.path.join('OPS', fname)) - metadata_el = input_xml.find('.//'+RDFNS('Description')) - metadatasource = etree.ElementTree(metadata_el) - - opf = xslt(metadatasource, res('xsltContent.xsl')) - + opf = xslt(metadata, res('xsltContent.xsl')) manifest = opf.find('.//' + OPFNS('manifest')) spine = opf.find('.//' + OPFNS('spine')) - for fname in 'style.css', 'logo_wolnelektury.png': - zip.write(res(fname), os.path.join('OPS', fname)) - annotations = etree.Element('annotations') - part_xml = etree.Element('utwor') - etree.SubElement(part_xml, 'master') toc_file = etree.fromstring('' \ @@ -231,99 +369,40 @@ def transform(input_file, output_file): 'version="2005-1">' \ '' \ 'Strona tytułowa' \ - '' \ - 'Początek utworu' \ '') + nav_map = toc_file[-1] - main_xml_part = part_xml[0] # było [0][0], master - nav_map = toc_file[-1] # było [-1][-1] - depth = 1 # navmap - - 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] - - replace_characters(main_text) - zip.writestr('OPS/title.html', - etree.tostring(xslt(input_xml, res('xsltTitle.xsl')), pretty_print=True)) - - # Search for table of contents elements and book division - - stupid_i = stupid_j = stupid_k = 1 - last_node_part = False - for one_part in main_text: - name = one_part.tag - if name in ("naglowek_czesc", "naglowek_rozdzial", "naglowek_akt", "srodtytul"): - if name == "naglowek_czesc": - stupid_k = 1 - last_node_part = True - find_annotations(annotations, part_xml, stupid_j) - replace_by_verse(part_xml) - zip.writestr('OPS/part%d.html' % stupid_j, - etree.tostring(xslt(part_xml, res('xsltScheme.xsl')), pretty_print=True)) - main_xml_part[:] = [deepcopy(one_part)] - # add to manifest and spine - add_to_manifest(manifest, stupid_j) - add_to_spine(spine, stupid_j) - name_toc = node_name(one_part) - # build table of contents - # i+2 because of title page - add_nav_point(nav_map, stupid_i+2, name_toc, stupid_j + 1) - stupid_i += 1 - stupid_j += 1 - else: - if last_node_part: - main_xml_part.append(one_part) - last_node_part = False - name_toc = node_name(one_part) - add_nav_point(nav_map, stupid_i + 1, name_toc, stupid_j) - else: - stupid_k = 1 - find_annotations(annotations, part_xml, stupid_j) - replace_by_verse(part_xml) - zip.writestr('OPS/part%d.html' % stupid_j, - etree.tostring(xslt(part_xml, res('xsltScheme.xsl')), pretty_print=True)) - # start building a new part - main_xml_part[:] = [deepcopy(one_part)] - add_to_manifest(manifest, stupid_j) - add_to_spine(spine, stupid_j) - name_toc = node_name(one_part) - add_nav_point(nav_map, stupid_i + 2, name_toc, stupid_j + 1) # title page - stupid_j += 1 - stupid_i += 1 - else: - if name in ('naglowek_podrozdzial', 'naglowek_scena'): - depth = 2 - name_toc = node_name(one_part) - add_nav_point2(nav_map, stupid_i + 2, name_toc, stupid_j, stupid_k) - one_part.set('sub', str(stupid_k)) - stupid_k += 1 - stupid_i += 1 - main_xml_part.append(deepcopy(one_part)) - last_node_part = False - find_annotations(annotations, part_xml, stupid_j) - replace_by_verse(part_xml) - add_to_manifest(manifest, stupid_j) - add_to_spine(spine, stupid_j) + toc, chunk_counter, chars = transform_file(input_xml) - zip.writestr('OPS/part%d.html' % stupid_j, - etree.tostring(xslt(part_xml, res('xsltScheme.xsl')), pretty_print=True)) + 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( 'Przypisy'\ - '' % {'i':stupid_i+2})) + '' % {'i': toc_counter})) manifest.append(etree.fromstring( '')) spine.append(etree.fromstring( '')) 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( - xslt(annotations, res("xsltAnnotations.xsl")), pretty_print=True)) + 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 = [] @@ -335,31 +414,22 @@ def transform(input_file, output_file): 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(depth)) + toc_file[0][1].set('content', str(toc.depth())) set_inner_xml(toc_file[1], ''.join(('', title, ''))) zip.writestr('OPS/toc.ncx', etree.tostring(toc_file, pretty_print=True)) zip.close() if __name__ == '__main__': - import html + from librarian import DirDocProvider if len(sys.argv) < 2: - print >> sys.stderr, 'Usage: wl2epub [output file]' + print >> sys.stderr, 'Usage: python epub.py ' sys.exit(1) - input = sys.argv[1] - if len(sys.argv) > 2: - output = sys.argv[2] - else: - basename, ext = os.path.splitext(input) - output = basename + '.epub' - - print input - if html.transform(input, is_file=True) == '': - print 'empty content - skipping' - else: - transform(open(input, 'r'), open(output, 'w')) - - + 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)