X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/0859d20e39ee940904f2bfdc36572000109b2214..660b341720c5844ad3fe5fd1f4734af67eb34d76:/librarian/pdf.py?ds=sidebyside diff --git a/librarian/pdf.py b/librarian/pdf.py index bb1ba64..2154985 100644 --- a/librarian/pdf.py +++ b/librarian/pdf.py @@ -3,40 +3,54 @@ # 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 -import sys - 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 +from librarian import ParseError, DCNS, get_resource, OutputFile from librarian import functions +from librarian.cover import DefaultEbookCover 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): - """ inserts for every occurence of `split_re' in text nodes in the `doc' tree +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'); @@ -45,6 +59,8 @@ def insert_tags(doc, split_re, tagname): """ 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: @@ -64,15 +80,19 @@ def insert_tags(doc, split_re, tagname): 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): @@ -121,29 +141,35 @@ def hack_motifs(doc): def parse_creator(doc): - """ find all dc:creator tags and add dc:creator_parsed with forenames first """ - for creator in doc.findall('//'+DCNS('creator')): - p = Person.from_text(creator.text) - creator_parsed = deepcopy(creator) - creator_parsed.tag = DCNS('creator_parsed') - creator_parsed.text = ' '.join(p.first_names + (p.last_name,)) - creator.getparent().insert(0, creator_parsed) + """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_resource(path): - return os.path.join(os.path.dirname(__file__), path) 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 """ + """ 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} + \documentclass{wl} \usepackage[%s]{%s} \begin{document} \end{document} @@ -157,34 +183,58 @@ def package_available(package, args='', verbose=False): return p == 0 -def transform(provider, slug=None, file_path=None, output_file=None, output_dir=None, make_dir=False, verbose=False, save_tex=None): +def transform(wldoc, verbose=False, save_tex=None, morefloats=None, + cover=None, flags=None, customizations=None): """ produces a PDF file with XeLaTeX - provider: a DocProvider - slug: slug of file to process, available by provider - file_path can be provided instead of a slug - 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 //.pdf istead of /.pdf + 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: - if file_path: - if slug: - raise ValueError('slug or file_path should be specified, not both') - document = load_including_children(provider, file_path=file_path) - else: - if not slug: - raise ValueError('either slug or file_path should be specified') - document = load_including_children(provider, slug=slug) + 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) + 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 not package_available('morefloats', 'maxfloats=19'): - # using old morefloats or none at all - document.edoc.getroot().set('old-morefloats', 'yes') + 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) @@ -193,19 +243,21 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= substitute_hyphens(document.edoc) fix_hanging(document.edoc) - # 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 :) # TeXML -> LaTeX temp = mkdtemp('-wl2pdf') + + if cover: + with open(os.path.join(temp, 'cover.png'), 'w') as f: + bound_cover.save(f) + + 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') @@ -216,10 +268,13 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= 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) + shutil.copy(get_resource('pdf/wl.cls'), temp) + shutil.copy(get_resource('res/wl-logo.png'), temp) - cwd = os.getcwd() + try: + cwd = os.getcwd() + except OSError: + cwd = None os.chdir(temp) if verbose: @@ -229,57 +284,42 @@ def transform(provider, slug=None, file_path=None, output_file=None, output_dir= if p: raise ParseError("Error parsing .tex file") - os.chdir(cwd) + if cwd is not None: + os.chdir(cwd) - # save the PDF + 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 - if slug: - output_path = os.path.join(output_dir, '%s.pdf' % slug) - else: - output_path = os.path.join(output_dir, os.path.splitext(os.path.basename(file_path))[0] + '.pdf') - shutil.move(pdf_path, output_path) - else: - 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.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(provider, slug=None, uri=None, file_path=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] - elif file_path: - f = open(file_path, 'r') + 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, URI nor file path provided for a book.') + raise ValueError('Neither a WLDocument, nor provider and URI were provided.') - document = WLDocument.from_file(f, True, - parse_dublincore=True, - preserve_lines=False) + text = re.sub(ur"([\u0400-\u04ff]+)", ur"\1", text) - f.close() + 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