# 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
+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
+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': 'xslt/wl2tex.xslt',
+ '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>
+ """
-def insert_tags(doc, split_re, tagname):
- print tagname
- for elem in doc.iter():
+ 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)
- elem.text = chunks.pop(0)
- while chunks:
+ 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
- elem.tail = chunks.pop(0)
- while chunks:
+ while len(chunks) > 1:
ins = etree.Element(tagname)
- ins.tail = chunks.pop(0)
+ ins.tail = chunks.pop()
parent.insert(ins_index, ins)
+ elem.tail = chunks.pop(0)
def substitute_hyphens(doc):
- insert_tags(doc,
+ insert_tags(doc,
re.compile("(?<=[^-\s])-(?=[^-\s])"),
- "dywiz")
+ "dywiz",
+ exclude=[DCNS("identifier.url"), DCNS("rights.license")]
+ )
def fix_hanging(doc):
- insert_tags(doc,
+ insert_tags(doc,
re.compile("(?<=\s\w)\s+"),
- "nbsp")
+ "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 os.path.join(os.path.dirname(__file__), STYLESHEETS[name])
-
-def transform(provider, slug, output_file=None, output_dir=None):
- """ produces a pdf file
-
- provider is a DocProvider
- either output_file (a file-like object) or output_dir (path to file/dir) should be specified
- if output_dir is specified, file will be written to <output_dir>/<author>/<slug>.pdf
+ 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
+ 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)
+
+ # wl -> TeXML
style_filename = get_stylesheet("wl2tex")
style = etree.parse(style_filename)
- document = load_including_children(provider, slug)
+ # 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)
- substitute_hyphens(document.edoc)
- fix_hanging(document.edoc)
-
- print etree.tostring(document.edoc)
+ texml = document.transform(style)
- # if output to dir, create the file
- if output_dir is not None:
- author = unicode(document.book_info.author)
- output_dir = os.path.join(output_dir, author)
+ if cover:
+ with open(os.path.join(temp, 'cover.png'), 'w') as f:
+ bound_cover.save(f, quality=80)
- texml = document.transform(style)
del document # no longer needed large object :)
- temp = mkdtemp('wl2pdf-')
tex_path = os.path.join(temp, 'doc.tex')
fout = open(tex_path, 'w')
- process(StringIO(texml), fout, 'utf8', 255, 0, 0)
+ process(StringIO(texml), fout, 'utf-8')
fout.close()
del texml
- print "pdflatex -output-directory %s %s" % (temp, os.path.join(temp, 'doc.tex'))
- if os.system("pdflatex -output-directory %s %s" % (temp, os.path.join(temp, 'doc.tex'))):
+ 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')
- if output_dir is not None:
- try:
- os.makedirs(output_dir)
- except OSError:
- pass
- output_path = os.path.join(output_dir, '%s.pdf' % slug)
- shutil.move(pdf_path, output_path)
- else:
- with open(pdf_path) as f:
- output_file.write(f.read())
- output_file.close()
+ shutil.move(pdf_path, output_file.name)
+ shutil.rmtree(temp)
+ return OutputFile.from_filename(output_file.name)
- return True
except (XMLSyntaxError, XSLTApplyError), e:
raise ParseError(e)
-def load_including_children(provider, slug=None, uri=None):
- """ makes one big xml file with children inserted at end
- either slug or uri must be provided
+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:
+ if uri and provider:
f = provider.by_uri(uri)
- elif slug:
- f = provider[slug]
+ 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 slug nor URI provided for a book.')
+ 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_file(f, True,
- parse_dublincore=True,
- preserve_lines=False)
+ 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, uri=child_uri)
+ child = load_including_children(provider=provider, uri=child_uri)
document.edoc.getroot().append(child.edoc.getroot())
-
return document
-
-
-if __name__ == '__main__':
- import sys
- from librarian import DirDocProvider
-
- if len(sys.argv) < 2:
- print >> sys.stderr, 'Usage: python pdf.py <input file>'
- sys.exit(1)
-
- main_input = sys.argv[1]
- basepath, ext = os.path.splitext(main_input)
- path, slug = os.path.realpath(basepath).rsplit('/', 1)
- provider = DirDocProvider(path)
- transform(provider, slug, output_dir=path)
-
fnp / librarian.git / blobdiff