X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/7e7eac17f776821311bdcc305052575f7994989e..1788a3460def290cf9dd0eff514e77c5d427bcc5:/librarian/epub.py?ds=sidebyside diff --git a/librarian/epub.py b/librarian/epub.py index 70403fd..80941eb 100644 --- a/librarian/epub.py +++ b/librarian/epub.py @@ -12,13 +12,11 @@ from StringIO import StringIO from copy import deepcopy from lxml import etree import zipfile -from tempfile import mkdtemp +from tempfile import mkdtemp, NamedTemporaryFile from shutil import rmtree -import sys - -from librarian import XMLNamespace, RDFNS, DCNS, WLNS, NCXNS, OPFNS, XHTMLNS, NoDublinCore -from librarian.dcparser import BookInfo +from librarian import RDFNS, WLNS, NCXNS, OPFNS, XHTMLNS, OutputFile +from librarian.cover import WLCover from librarian import functions, get_resource @@ -158,19 +156,23 @@ def add_to_spine(spine, partno): class TOC(object): - def __init__(self, name=None, part_number=None): + def __init__(self, name=None, part_href=None): self.children = [] self.name = name - self.part_number = part_number + self.part_href = part_href self.sub_number = None - def add(self, name, part_number, level=0, is_part=True): + 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_number, level-1, is_part) + return self.children[-1].add(name, part_href, level-1, is_part) else: t = TOC(name) - t.part_number = part_number - self.children.append(t) + 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 @@ -187,7 +189,13 @@ class TOC(object): else: return 0 - def write_to_xml(self, nav_map, counter): + 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) @@ -200,15 +208,26 @@ class TOC(object): 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) + 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( + "
%s
" % + (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')) as f: + t = unicode(f.read(), 'utf-8') + return t % self.html_part() + def used_chars(element): """ Lists characters used in an ETree Element """ @@ -248,9 +267,9 @@ def transform_chunk(chunk_xml, chunk_no, annotations, empty=False, _empty_html_s 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) + toc.add(node_name(element), "part%d.html" % chunk_no) elif element.tag in ('naglowek_podrozdzial', 'naglowek_scena'): - subnumber = toc.add(node_name(element), chunk_no, level=1, is_part=False) + 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: @@ -266,44 +285,40 @@ def transform_chunk(chunk_xml, chunk_no, annotations, empty=False, _empty_html_s return output_html, toc, chars -def transform(provider, slug=None, file_path=None, output_file=None, output_dir=None, make_dir=False, verbose=False, +def transform(wldoc, verbose=False, + style=None, html_toc=False, sample=None, cover=None, flags=None): """ produces a EPUB file - provider: a DocProvider - slug: slug of file to process, available by provider - output_file: file-like object or path to output file - output_dir: path to directory to save output file to; either this or output_file must be present - make_dir: writes output to //.epub instead of /.epub sample=n: generate sample e-book (with at least n paragraphs) - cover: a cover.Cover object - flags: less-advertising, + cover: a cover.Cover object or True for default + flags: less-advertising, without-fonts """ - def transform_file(input_xml, chunk_counter=1, first=True, sample=None): + def transform_file(wldoc, chunk_counter=1, first=True, sample=None): """ processes one input file and proceeds to its children """ - replace_characters(input_xml.getroot()) - - children = [child.text for child in input_xml.findall('.//'+DCNS('relation.hasPart'))] + replace_characters(wldoc.edoc.getroot()) # every input file will have a TOC entry, # pointing to starting chunk - toc = TOC(node_name(input_xml.find('.//'+DCNS('title'))), chunk_counter) + toc = TOC(wldoc.book_info.title, "part%d.html" % chunk_counter) chars = set() if first: # write book title page - html_tree = xslt(input_xml, get_resource('epub/xsltTitle.xsl')) + html_tree = xslt(wldoc.edoc, get_resource('epub/xsltTitle.xsl')) chars = used_chars(html_tree.getroot()) zip.writestr('OPS/title.html', etree.tostring(html_tree, method="html", pretty_print=True)) - elif children: + # 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(input_xml, get_resource('epub/xsltChunkTitle.xsl')) + html_tree = xslt(wldoc.edoc, get_resource('epub/xsltChunkTitle.xsl')) chars = used_chars(html_tree.getroot()) html_string = etree.tostring(html_tree, method="html", pretty_print=True) zip.writestr('OPS/part%d.html' % chunk_counter, html_string) @@ -311,12 +326,12 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= add_to_spine(spine, chunk_counter) chunk_counter += 1 - if len(input_xml.getroot()) > 1: + if len(wldoc.edoc.getroot()) > 1: # rdf before style master - main_text = input_xml.getroot()[1] + main_text = wldoc.edoc.getroot()[1] else: # rdf in style master - main_text = input_xml.getroot()[0] + main_text = wldoc.edoc.getroot()[0] if main_text.tag == RDFNS('RDF'): main_text = None @@ -337,51 +352,28 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= 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, sample = transform_file(child_xml, chunk_counter, first=False, sample=sample) - toc.append(child_toc) - chars = chars.union(chunk_chars) + 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 - # read metadata from the first file - if file_path: - if slug: - raise ValueError('slug or file_path should be specified, not both') - f = open(file_path, 'r') - input_xml = etree.parse(f) - f.close() - else: - if not slug: - raise ValueError('either slug or file_path should be specified') - input_xml = etree.parse(provider[slug]) + + document = deepcopy(wldoc) + del wldoc if flags: for flag in flags: - input_xml.getroot().set(flag, 'yes') - - 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: - if make_dir: - author = unicode(book_info.author) - output_dir = os.path.join(output_dir, author) - try: - os.makedirs(output_dir) - except OSError: - pass - if slug: - output_file = open(os.path.join(output_dir, '%s.epub' % slug), 'w') - else: - output_file = open(os.path.join(output_dir, os.path.splitext(os.path.basename(file_path))[0] + '.epub'), 'w') + document.edoc.getroot().set(flag, 'yes') + 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) # write static elements @@ -395,17 +387,23 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= '' \ '') - zip.write(get_resource('epub/style.css'), os.path.join('OPS', 'style.css')) 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')) - - opf = xslt(metadata, get_resource('epub/xsltContent.xsl')) - manifest = opf.find('.//' + OPFNS('manifest')) - spine = opf.find('.//' + OPFNS('spine')) + 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 = WLCover + if 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) + cover_file = StringIO() - c = cover(book_info.author.readable(), book_info.title) + c = cover(document.book_info) c.save(cover_file) c_name = 'cover.%s' % c.ext() zip.writestr(os.path.join('OPS', c_name), cover_file.getvalue()) @@ -420,9 +418,9 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= '')) manifest.append(etree.fromstring( '' % (c_name, c.mime_type()))) - spine.insert(0, etree.fromstring('')) + spine.insert(0, etree.fromstring('')) opf.getroot()[0].append(etree.fromstring('')) - opf.getroot().append(etree.fromstring('')) + guide.append(etree.fromstring('')) annotations = etree.Element('annotations') @@ -431,23 +429,24 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= '"-//NISO//DTD ncx 2005-1//EN" "http://www.daisy.org/z3986/2005/ncx-2005-1.dtd">' \ '' \ - '' \ - 'Strona tytułowa' \ - '') + '') nav_map = toc_file[-1] - toc, chunk_counter, chars, sample = transform_file(input_xml, sample=sample) + if html_toc: + manifest.append(etree.fromstring( + '')) + spine.append(etree.fromstring( + '')) + guide.append(etree.fromstring('')) + + toc, chunk_counter, chars, sample = transform_file(document, sample=sample) - if not toc.children: - toc.add(u"Początek utworu", 1) - toc_counter = toc.write_to_xml(nav_map, 2) + if len(toc.children) < 2: + toc.add(u"Początek utworu", "part1.html") # Last modifications in container files and EPUB creation if len(annotations) > 0: - nav_map.append(etree.fromstring( - 'Przypisy'\ - '' % {'i': toc_counter})) - toc_counter += 1 + toc.add("Przypisy", "annotations.html") manifest.append(etree.fromstring( '')) spine.append(etree.fromstring( @@ -458,38 +457,38 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= zip.writestr('OPS/annotations.html', etree.tostring( html_tree, method="html", pretty_print=True)) - nav_map.append(etree.fromstring( - 'Strona redakcyjna'\ - '' % {'i': toc_counter})) + toc.add("Strona redakcyjna", "last.html") manifest.append(etree.fromstring( '')) spine.append(etree.fromstring( '')) - html_tree = xslt(input_xml, get_resource('epub/xsltLast.xsl')) + html_tree = xslt(document.edoc, get_resource('epub/xsltLast.xsl')) chars.update(used_chars(html_tree.getroot())) zip.writestr('OPS/last.html', etree.tostring( html_tree, method="html", 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': - optimizer_call = ['perl', 'subset.pl', '--chars', ''.join(chars).encode('utf-8'), - get_resource('fonts/' + fname), os.path.join(tmpdir, fname)] - if verbose: - print "Running font-optimizer" - subprocess.check_call(optimizer_call) - else: - subprocess.check_call(optimizer_call, stdout=subprocess.PIPE, stderr=subprocess.PIPE) - zip.write(os.path.join(tmpdir, fname), os.path.join('OPS', fname)) - rmtree(tmpdir) - os.chdir(cwd) + if not flags or not 'without-fonts' in flags: + # 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': + optimizer_call = ['perl', 'subset.pl', '--chars', ''.join(chars).encode('utf-8'), + get_resource('fonts/' + fname), os.path.join(tmpdir, fname)] + if verbose: + print "Running font-optimizer" + subprocess.check_call(optimizer_call) + else: + subprocess.check_call(optimizer_call, stdout=subprocess.PIPE, stderr=subprocess.PIPE) + zip.write(os.path.join(tmpdir, fname), os.path.join('OPS', fname)) + manifest.append(etree.fromstring( + '' % (fname, 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]) + title = document.book_info.title attributes = "dtb:uid", "dtb:depth", "dtb:totalPageCount", "dtb:maxPageNumber" for st in attributes: meta = toc_file.makeelement(NCXNS('meta')) @@ -499,5 +498,13 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= 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(('', title, ''))) + + # 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)) zip.close() + + return OutputFile.from_filename(output_file.name)