X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/f8442984a021793164661a54ec84ae9caaf9862b..4077ffb3cbd868df95239898563508b64e6d6ecf:/librarian/epub.py?ds=inline diff --git a/librarian/epub.py b/librarian/epub.py index 58d4bc0..b063380 100644 --- a/librarian/epub.py +++ b/librarian/epub.py @@ -12,13 +12,10 @@ 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 import functions, get_resource @@ -287,47 +284,40 @@ 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, 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)) # add a title page TOC entry toc.add(u"Strona tytułowa", "title.html") - elif children: + 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) @@ -335,12 +325,12 @@ 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 @@ -361,51 +351,28 @@ 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 @@ -425,14 +392,10 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= style = get_resource('epub/style.css') zip.write(style, os.path.join('OPS', 'style.css')) - opf = xslt(metadata, get_resource('epub/xsltContent.xsl')) - manifest = opf.find('.//' + OPFNS('manifest')) - guide = opf.find('.//' + OPFNS('guide')) - spine = opf.find('.//' + OPFNS('spine')) if cover: cover_file = StringIO() - c = cover(book_info.author.readable(), book_info.title) + c = cover(document.book_info.author.readable(), document.book_info.title) c.save(cover_file) c_name = 'cover.%s' % c.ext() zip.writestr(os.path.join('OPS', c_name), cover_file.getvalue()) @@ -468,7 +431,7 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= '')) guide.append(etree.fromstring('')) - toc, chunk_counter, chars, sample = transform_file(input_xml, sample=sample) + toc, chunk_counter, chars, sample = transform_file(document, sample=sample) if len(toc.children) < 2: toc.add(u"Początek utworu", "part1.html") @@ -491,7 +454,7 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= '')) 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)) @@ -517,8 +480,7 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= 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')) @@ -536,3 +498,5 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= 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)