--- /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 print_function, unicode_literals
+
+import os
+import os.path
+import shutil
+from tempfile import mkdtemp, NamedTemporaryFile
+import re
+from copy import deepcopy
+from subprocess import call, PIPE
+from itertools import chain
+
+from Texml.processor import process
+from lxml import etree
+from lxml.etree import XMLSyntaxError, XSLTApplyError
+import six
+
+from librarian.dcparser import Person
+from librarian.parser import WLDocument
+from librarian import ParseError, DCNS, get_resource, OutputFile, RDFNS
+from librarian import functions
+from librarian.cover import make_cover
+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, encoding='unicode'))
+ <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"), "meta"]
+ )
+
+
+def fix_hanging(doc):
+ insert_tags(doc,
+ re.compile("(?<=\s\w)\s+"),
+ "nbsp",
+ exclude=[DCNS("identifier.url"), DCNS("rights.license")]
+ )
+
+
+def fix_tables(doc):
+ for kol in doc.iter(tag='kol'):
+ if kol.tail is not None:
+ if not kol.tail.strip():
+ kol.tail = None
+ for table in chain(doc.iter(tag='tabela'), doc.iter(tag='tabelka')):
+ if table.get('ramka') == '1' or table.get('ramki') == '1':
+ table.set('_format', '|' + 'X|' * len(table[0]))
+ else:
+ table.set('_format', 'X' * len(table[0]))
+
+
+def mark_subauthors(doc):
+ root_author = ', '.join(elem.text for elem in doc.findall('./' + RDFNS('RDF') + '//' + DCNS('creator_parsed')))
+ last_author = None
+ # jeśli autor jest inny niż autor całości i niż poprzedni autor
+ # to wstawiamy jakiś znacznik w rdf?
+ for subutwor in doc.xpath('/utwor/utwor'):
+ author = ', '.join(elem.text for elem in subutwor.findall('.//' + DCNS('creator_parsed')))
+ if author not in (last_author, root_author):
+ subutwor.find('.//' + RDFNS('RDF')).append(etree.Element('use_subauthor'))
+ last_author = author
+
+
+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("""
+ \\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, ilustr_path='', latex_dir=False):
+ """ 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 = make_cover
+ 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
+ editors = document.editors()
+ if editors:
+ root.set('editors', u', '.join(sorted(
+ editor.readable() for editor in 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)
+ fix_tables(document.edoc)
+ mark_subauthors(document.edoc)
+
+ # wl -> TeXML
+ style_filename = get_stylesheet("wl2tex")
+ style = etree.parse(style_filename)
+ functions.reg_mathml_latex()
+
+ # TeXML -> LaTeX
+ temp = mkdtemp('-wl2pdf')
+
+ for ilustr in document.edoc.findall("//ilustr"):
+ shutil.copy(os.path.join(ilustr_path, ilustr.get("src")), temp)
+
+ 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, 'wb')
+ process(six.BytesIO(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)
+
+ if latex_dir:
+ return temp
+
+ try:
+ cwd = os.getcwd()
+ except OSError:
+ cwd = None
+ os.chdir(temp)
+
+ # some things work better when compiled twice
+ # (table of contents, [line numbers - disabled])
+ for run in range(2):
+ 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) as 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(r"([\u0400-\u04ff]+)", r"<alien>\1</alien>", text)
+
+ document = WLDocument.from_bytes(text.encode('utf-8'), 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