+++ /dev/null
-# -*- 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 <tagname> for every occurence of `split_re' in text nodes in the `doc' tree
-
- >>> t = etree.fromstring('<a><b>A-B-C</b>X-Y-Z</a>');
- >>> insert_tags(t, re.compile('-'), 'd');
- >>> print etree.tostring(t)
- <a><b>A<d/>B<d/>C</b>X<d/>Y<d/>Z</a>
- """
-
- 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"<alien>\1</alien>", 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
fnp / librarian.git / blobdiff