# This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
#
+from __future__ import with_statement
import os
import os.path
import shutil
from StringIO import StringIO
from tempfile import mkdtemp
import re
+from copy import deepcopy
+from subprocess import call, PIPE
+
+import sys
from Texml.processor import process
from lxml import etree
from librarian import ParseError
from librarian import functions
+
+
functions.reg_substitute_entities()
+functions.reg_person_name()
+functions.reg_strip()
+functions.reg_starts_white()
+functions.reg_ends_white()
STYLESHEETS = {
'wl2tex': 'xslt/wl2tex.xslt',
def insert_tags(doc, split_re, tagname):
- print tagname
+ """ 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():
- if elem.text:
- chunks = split_re.split(elem.text)
- elem.text = chunks.pop(0)
- while chunks:
- ins = etree.Element(tagname)
- ins.tail = chunks.pop()
- elem.insert(0, ins)
- 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:
- ins = etree.Element(tagname)
- ins.tail = chunks.pop(0)
- parent.insert(ins_index, ins)
+ try:
+ 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)
+ except TypeError, e:
+ # element with no children, like comment
+ pass
def substitute_hyphens(doc):
"nbsp")
+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'):
+ print motif.text
+ 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 get_resource(path):
+ return os.path.join(os.path.dirname(__file__), path)
+
def get_stylesheet(name):
- return os.path.join(os.path.dirname(__file__), STYLESHEETS[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{book}
+ \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(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
+def transform(provider, slug, output_file=None, output_dir=None, make_dir=False, verbose=False, save_tex=None):
+ """ produces a PDF file with XeLaTeX
+
+ 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 <output_dir>/<author>/<slug>.pdf istead of <output_dir>/<slug>.pdf
+ verbose: prints all output from LaTeX
+ save_tex: path to save the intermediary LaTeX file to
"""
# Parse XSLT
try:
- style_filename = get_stylesheet("wl2tex")
- style = etree.parse(style_filename)
-
document = load_including_children(provider, slug)
+ # check for latex packages
+ if not package_available('morefloats', 'maxfloats=19', verbose=verbose):
+ document.edoc.getroot().set('old-morefloats', 'yes')
+ print >> sys.stderr, """
+==============================================================================
+LaTeX `morefloats' package is older than v.1.0c or not available at all.
+Some documents with many motifs in long stanzas or paragraphs may not compile.
+=============================================================================="""
+
+ # hack the tree
+ move_motifs_inside(document.edoc)
+ hack_motifs(document.edoc)
substitute_hyphens(document.edoc)
fix_hanging(document.edoc)
-
- print etree.tostring(document.edoc)
- # if output to dir, create the file
- if output_dir is not None:
+ # find output dir
+ if make_dir and output_dir is not None:
author = unicode(document.book_info.author)
output_dir = os.path.join(output_dir, author)
+ # wl -> TeXML
+ style_filename = get_stylesheet("wl2tex")
+ style = etree.parse(style_filename)
texml = document.transform(style)
del document # no longer needed large object :)
- temp = mkdtemp('wl2pdf-')
+ # TeXML -> LaTeX
+ 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.sty'), temp)
+ shutil.copy(get_resource('pdf/wl-logo.png'), temp)
+
+ cwd = os.getcwd()
+ 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")
+ os.chdir(cwd)
+
+ # save the PDF
pdf_path = os.path.join(temp, 'doc.pdf')
if output_dir is not None:
try:
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()
+ if hasattr(output_file, 'write'):
+ # file-like object
+ with open(pdf_path) as f:
+ output_file.write(f.read())
+ output_file.close()
+ else:
+ # path to output file
+ shutil.copy(pdf_path, output_file)
+ shutil.rmtree(temp)
- return True
except (XMLSyntaxError, XSLTApplyError), e:
raise ParseError(e)
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