X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/503d3f6a67fc9599bc1a189821e72af7e2c0b494..5c8b83a904d5dd988c0bfd86729b91a1ac763164:/librarian/epub.py diff --git a/librarian/epub.py b/librarian/epub.py index e25ce8f..527d050 100644 --- a/librarian/epub.py +++ b/librarian/epub.py @@ -8,6 +8,7 @@ from __future__ import with_statement import os import os.path import subprocess +from StringIO import StringIO from copy import deepcopy from lxml import etree import zipfile @@ -19,7 +20,7 @@ import sys from librarian import XMLNamespace, RDFNS, DCNS, WLNS, NCXNS, OPFNS, NoDublinCore from librarian.dcparser import BookInfo -from librarian import functions +from librarian import functions, get_resource functions.reg_person_name() @@ -73,16 +74,12 @@ def xslt(xml, sheet): 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")\ + return text.replace(u"\ufeff", u"")\ + .replace("---", u"\u2014")\ .replace("--", u"\u2013")\ .replace(",,", u"\u201E")\ .replace('"', u"\u201D")\ @@ -109,7 +106,7 @@ def find_annotations(annotations, source, part_no): child.clear() child.tail = tail child.text = number - if child.tag not in ('extra', 'podtytul'): + if child.tag not in ('extra',): find_annotations(annotations, child, part_no) @@ -244,7 +241,7 @@ def chop(main_text): yield part_xml -def transform_chunk(chunk_xml, chunk_no, annotations): +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() @@ -254,15 +251,22 @@ def transform_chunk(chunk_xml, chunk_no, annotations): 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, method="html", pretty_print=True) + 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, method="html", pretty_print=True) 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(provider, slug=None, file_path=None, output_file=None, output_dir=None, make_dir=False, verbose=False, + sample=None, cover_fn=None, flags=None): """ produces a EPUB file provider: a DocProvider @@ -270,11 +274,16 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= 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_fn: function(author, title) -> cover image + flags: less-advertising, """ - def transform_file(input_xml, chunk_counter=1, first=True): + def transform_file(input_xml, 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'))] # every input file will have a TOC entry, @@ -283,16 +292,20 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= chars = set() if first: # write book title page - html_tree = xslt(input_xml, res('xsltTitle.xsl')) + html_tree = xslt(input_xml, 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: # 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, method="html", pretty_print=True)) + 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')) + 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) add_to_manifest(manifest, chunk_counter) add_to_spine(spine, chunk_counter) chunk_counter += 1 @@ -307,10 +320,15 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= 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) + 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, chunk_html) @@ -321,11 +339,11 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= 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) + 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) - return toc, chunk_counter, chars + return toc, chunk_counter, chars, sample # read metadata from the first file if file_path: @@ -339,6 +357,10 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= raise ValueError('either slug or file_path should be specified') input_xml = etree.parse(provider[slug]) + 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.') @@ -372,13 +394,28 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= '' \ '') - for fname in 'style.css', 'logo_wolnelektury.png': - zip.write(res(fname), os.path.join('OPS', fname)) + 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')) - opf = xslt(metadata, res('xsltContent.xsl')) + opf = xslt(metadata, get_resource('epub/xsltContent.xsl')) manifest = opf.find('.//' + OPFNS('manifest')) spine = opf.find('.//' + OPFNS('spine')) + if cover_fn: + cover = StringIO() + cover_fn(book_info.author.readable(), book_info.title).save(cover, format='JPEG') + zip.writestr(os.path.join('OPS', 'cover.jpg'), cover.getvalue()) + del cover + zip.writestr('OPS/cover.html', open(get_resource('epub/cover.html')).read()) + manifest.append(etree.fromstring( + '')) + manifest.append(etree.fromstring( + '')) + spine.insert(0, etree.fromstring('')) + opf.getroot()[0].append(etree.fromstring('')) + opf.getroot().append(etree.fromstring('')) + + annotations = etree.Element('annotations') toc_file = etree.fromstring('') nav_map = toc_file[-1] - toc, chunk_counter, chars = transform_file(input_xml) + toc, chunk_counter, chars, sample = transform_file(input_xml, sample=sample) if not toc.children: toc.add(u"Początek utworu", 1) @@ -401,23 +438,37 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= nav_map.append(etree.fromstring( 'Przypisy'\ '' % {'i': toc_counter})) + toc_counter += 1 manifest.append(etree.fromstring( '')) spine.append(etree.fromstring( '')) replace_by_verse(annotations) - html_tree = xslt(annotations, res("xsltAnnotations.xsl")) + 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, method="html", pretty_print=True)) + nav_map.append(etree.fromstring( + 'Strona redakcyjna'\ + '' % {'i': toc_counter})) + manifest.append(etree.fromstring( + '')) + spine.append(etree.fromstring( + '')) + html_tree = xslt(input_xml, 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'), res('../fonts/' + fname), os.path.join(tmpdir, fname)] + 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)