X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/ad7b5c75f9161ac14f1f26032f4b4d54077b65a4..fefdce4e24f9e397df5538fe6e7f54b5ece4d841:/librarian/pdf.py?ds=inline diff --git a/librarian/pdf.py b/librarian/pdf.py deleted file mode 100644 index 7aaff10..0000000 --- a/librarian/pdf.py +++ /dev/null @@ -1,338 +0,0 @@ -# -*- 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. -# -"""PDF creation library. - -Creates one big XML from the book and its children, converts it to LaTeX -with TeXML, then runs it by XeLaTeX. - -""" -from __future__ import with_statement -import os -import os.path -import shutil -from StringIO import StringIO -from tempfile import mkdtemp, NamedTemporaryFile -import re -from copy import deepcopy -from subprocess import call, PIPE - -from Texml.processor import process -from lxml import etree -from lxml.etree import XMLSyntaxError, XSLTApplyError - -from librarian.dcparser import Person -from librarian.parser import WLDocument -from librarian import ParseError, DCNS, get_resource, OutputFile -from librarian import functions -from librarian.cover import DefaultEbookCover -from .sponsor import sponsor_logo - - -functions.reg_substitute_entities() -functions.reg_strip() -functions.reg_starts_white() -functions.reg_ends_white() -functions.reg_texcommand() - -STYLESHEETS = { - 'wl2tex': 'pdf/wl2tex.xslt', -} - -#CUSTOMIZATIONS = [ -# 'nofootnotes', -# 'nothemes', -# 'defaultleading', -# 'onehalfleading', -# 'doubleleading', -# 'nowlfont', -# ] - -def insert_tags(doc, split_re, tagname, exclude=None): - """ inserts for every occurence of `split_re' in text nodes in the `doc' tree - - >>> t = etree.fromstring('A-B-CX-Y-Z'); - >>> insert_tags(t, re.compile('-'), 'd'); - >>> print etree.tostring(t) - ABCXYZ - """ - - for elem in doc.iter(tag=etree.Element): - if exclude and elem.tag in exclude: - continue - if elem.text: - chunks = split_re.split(elem.text) - while len(chunks) > 1: - ins = etree.Element(tagname) - ins.tail = chunks.pop() - elem.insert(0, ins) - elem.text = chunks.pop(0) - if elem.tail: - chunks = split_re.split(elem.tail) - parent = elem.getparent() - ins_index = parent.index(elem) + 1 - while len(chunks) > 1: - ins = etree.Element(tagname) - ins.tail = chunks.pop() - parent.insert(ins_index, ins) - elem.tail = chunks.pop(0) - - -def substitute_hyphens(doc): - insert_tags(doc, - re.compile("(?<=[^-\s])-(?=[^-\s])"), - "dywiz", - exclude=[DCNS("identifier.url"), DCNS("rights.license")] - ) - - -def fix_hanging(doc): - insert_tags(doc, - re.compile("(?<=\s\w)\s+"), - "nbsp", - exclude=[DCNS("identifier.url"), DCNS("rights.license")] - ) - - -def move_motifs_inside(doc): - """ moves motifs to be into block elements """ - for master in doc.xpath('//powiesc|//opowiadanie|//liryka_l|//liryka_lp|//dramat_wierszowany_l|//dramat_wierszowany_lp|//dramat_wspolczesny'): - for motif in master.xpath('motyw'): - for sib in motif.itersiblings(): - if sib.tag not in ('sekcja_swiatlo', 'sekcja_asterysk', 'separator_linia', 'begin', 'end', 'motyw', 'extra', 'uwaga'): - # motif shouldn't have a tail - it would be untagged text - motif.tail = None - motif.getparent().remove(motif) - sib.insert(0, motif) - break - - -def hack_motifs(doc): - """ dirty hack for the marginpar-creates-orphans LaTeX problem - see http://www.latex-project.org/cgi-bin/ltxbugs2html?pr=latex/2304 - - moves motifs in stanzas from first verse to second - and from next to last to last, then inserts negative vspace before them - """ - for motif in doc.findall('//strofa//motyw'): - # find relevant verse-level tag - verse, stanza = motif, motif.getparent() - while stanza is not None and stanza.tag != 'strofa': - verse, stanza = stanza, stanza.getparent() - breaks_before = sum(1 for i in verse.itersiblings('br', preceding=True)) - breaks_after = sum(1 for i in verse.itersiblings('br')) - if (breaks_before == 0 and breaks_after > 0) or breaks_after == 1: - move_by = 1 - if breaks_after == 2: - move_by += 1 - moved_motif = deepcopy(motif) - motif.tag = 'span' - motif.text = None - moved_motif.tail = None - moved_motif.set('moved', str(move_by)) - - for br in verse.itersiblings('br'): - if move_by > 1: - move_by -= 1 - continue - br.addnext(moved_motif) - break - - -def parse_creator(doc): - """Generates readable versions of creator and translator tags. - - Finds all dc:creator and dc.contributor.translator tags - and adds *_parsed versions with forenames first. - """ - for person in doc.xpath("|".join('//dc:'+(tag) for tag in ( - 'creator', 'contributor.translator')), - namespaces = {'dc': str(DCNS)})[::-1]: - if not person.text: - continue - p = Person.from_text(person.text) - person_parsed = deepcopy(person) - person_parsed.tag = person.tag + '_parsed' - person_parsed.set('sortkey', person.text) - person_parsed.text = p.readable() - person.getparent().insert(0, person_parsed) - - -def get_stylesheet(name): - return get_resource(STYLESHEETS[name]) - - -def package_available(package, args='', verbose=False): - """ check if a verion of a latex package accepting given args is available """ - tempdir = mkdtemp('-wl2pdf-test') - fpath = os.path.join(tempdir, 'test.tex') - f = open(fpath, 'w') - f.write(r""" - \documentclass{wl} - \usepackage[%s]{%s} - \begin{document} - \end{document} - """ % (args, package)) - f.close() - if verbose: - p = call(['xelatex', '-output-directory', tempdir, fpath]) - else: - p = call(['xelatex', '-interaction=batchmode', '-output-directory', tempdir, fpath], stdout=PIPE, stderr=PIPE) - shutil.rmtree(tempdir) - return p == 0 - - -def transform(wldoc, verbose=False, save_tex=None, morefloats=None, - cover=None, flags=None, customizations=None): - """ produces a PDF file with XeLaTeX - - wldoc: a WLDocument - verbose: prints all output from LaTeX - save_tex: path to save the intermediary LaTeX file to - morefloats (old/new/none): force specific morefloats - cover: a cover.Cover factory or True for default - flags: less-advertising, - customizations: user requested customizations regarding various formatting parameters (passed to wl LaTeX class) - """ - - # Parse XSLT - try: - book_info = wldoc.book_info - document = load_including_children(wldoc) - root = document.edoc.getroot() - - if cover: - if cover is True: - cover = DefaultEbookCover - bound_cover = cover(book_info, width=1200) - root.set('data-cover-width', str(bound_cover.width)) - root.set('data-cover-height', str(bound_cover.height)) - if bound_cover.uses_dc_cover: - if book_info.cover_by: - root.set('data-cover-by', book_info.cover_by) - if book_info.cover_source: - root.set('data-cover-source', - book_info.cover_source) - if flags: - for flag in flags: - root.set('flag-' + flag, 'yes') - - # check for LaTeX packages - if morefloats: - root.set('morefloats', morefloats.lower()) - elif package_available('morefloats', 'maxfloats=19'): - root.set('morefloats', 'new') - - # add customizations - if customizations is not None: - root.set('customizations', u','.join(customizations)) - - # add editors info - root.set('editors', u', '.join(sorted( - editor.readable() for editor in document.editors()))) - if document.book_info.funders: - root.set('funders', u', '.join(document.book_info.funders)) - if document.book_info.thanks: - root.set('thanks', document.book_info.thanks) - - # hack the tree - move_motifs_inside(document.edoc) - hack_motifs(document.edoc) - parse_creator(document.edoc) - substitute_hyphens(document.edoc) - fix_hanging(document.edoc) - - # wl -> TeXML - style_filename = get_stylesheet("wl2tex") - style = etree.parse(style_filename) - - # TeXML -> LaTeX - temp = mkdtemp('-wl2pdf') - - for sponsor in book_info.sponsors: - ins = etree.Element("data-sponsor", name=sponsor) - logo = sponsor_logo(sponsor) - if logo: - fname = 'sponsor-%s' % os.path.basename(logo) - shutil.copy(logo, os.path.join(temp, fname)) - ins.set('src', fname) - root.insert(0, ins) - - if book_info.sponsor_note: - root.set("sponsor-note", book_info.sponsor_note) - - texml = document.transform(style) - - if cover: - with open(os.path.join(temp, 'cover.png'), 'w') as f: - bound_cover.save(f, quality=80) - - del document # no longer needed large object :) - - tex_path = os.path.join(temp, 'doc.tex') - fout = open(tex_path, 'w') - process(StringIO(texml), fout, 'utf-8') - fout.close() - del texml - - if save_tex: - shutil.copy(tex_path, save_tex) - - # LaTeX -> PDF - shutil.copy(get_resource('pdf/wl.cls'), temp) - shutil.copy(get_resource('res/wl-logo.png'), temp) - - try: - cwd = os.getcwd() - except OSError: - cwd = None - os.chdir(temp) - - if verbose: - p = call(['xelatex', tex_path]) - else: - p = call(['xelatex', '-interaction=batchmode', tex_path], stdout=PIPE, stderr=PIPE) - if p: - raise ParseError("Error parsing .tex file") - - if cwd is not None: - os.chdir(cwd) - - output_file = NamedTemporaryFile(prefix='librarian', suffix='.pdf', delete=False) - pdf_path = os.path.join(temp, 'doc.pdf') - shutil.move(pdf_path, output_file.name) - shutil.rmtree(temp) - return OutputFile.from_filename(output_file.name) - - except (XMLSyntaxError, XSLTApplyError), e: - raise ParseError(e) - - -def load_including_children(wldoc=None, provider=None, uri=None): - """ Makes one big xml file with children inserted at end. - - Either wldoc or provider and URI must be provided. - """ - - if uri and provider: - f = provider.by_uri(uri) - text = f.read().decode('utf-8') - f.close() - elif wldoc is not None: - text = etree.tostring(wldoc.edoc, encoding=unicode) - provider = wldoc.provider - else: - raise ValueError('Neither a WLDocument, nor provider and URI were provided.') - - text = re.sub(ur"([\u0400-\u04ff]+)", ur"\1", text) - - document = WLDocument.from_string(text, - parse_dublincore=True, provider=provider) - document.swap_endlines() - - for child_uri in document.book_info.parts: - child = load_including_children(provider=provider, uri=child_uri) - document.edoc.getroot().append(child.edoc.getroot()) - return document