X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/c37ed6f84853bd84513ce6ad2d4b74a5380d17d6..f492e325efb42a3348b2479a0fd0ffc3c484657b:/librarian/epub.py diff --git a/librarian/epub.py b/librarian/epub.py index a5607f7..f2987b5 100644 --- a/librarian/epub.py +++ b/librarian/epub.py @@ -1,13 +1,14 @@ # -*- 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. +# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information. # 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 @@ -16,10 +17,10 @@ from shutil import rmtree import sys -from librarian import XMLNamespace, RDFNS, DCNS, WLNS, NCXNS, OPFNS, NoDublinCore +from librarian import XMLNamespace, RDFNS, DCNS, WLNS, NCXNS, OPFNS, XHTMLNS, NoDublinCore from librarian.dcparser import BookInfo -from librarian import functions +from librarian import functions, get_resource functions.reg_person_name() @@ -32,7 +33,7 @@ def inner_xml(node): """ nt = node.text if node.text is not None else '' - return ''.join([nt] + [etree.tostring(child) for child in node]) + 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 @@ -73,11 +74,6 @@ 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: @@ -110,7 +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) @@ -245,7 +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() @@ -255,15 +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=None, flags=None): """ produces a EPUB file provider: a DocProvider @@ -271,9 +274,12 @@ 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: a cover.Cover object + 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()) @@ -286,16 +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 @@ -311,7 +321,14 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= if main_text is not None: 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) @@ -322,11 +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: @@ -340,6 +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.') @@ -373,13 +394,35 @@ 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: + cover_file = StringIO() + c = cover(book_info.author.readable(), book_info.title) + c.save(cover_file) + c_name = 'cover.%s' % c.ext() + zip.writestr(os.path.join('OPS', c_name), cover_file.getvalue()) + del cover_file + + cover_tree = etree.parse(get_resource('epub/cover.html')) + cover_tree.find('//' + XHTMLNS('img')).set('src', c_name) + zip.writestr('OPS/cover.html', etree.tostring( + cover_tree, method="html", pretty_print=True)) + + manifest.append(etree.fromstring( + '')) + manifest.append(etree.fromstring( + '' % (c_name, c.mime_type()))) + 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) @@ -402,23 +445,37 @@ 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)