X-Git-Url: https://git.mdrn.pl/librarian.git/blobdiff_plain/50851315ec74af3cad225137935de36904c4c29b..2c15db814c7f40406b6a86383e3e4bc8825b7faf:/librarian/epub.py?ds=inline

diff --git a/librarian/epub.py b/librarian/epub.py
index 4677229..e9670d5 100644
--- a/librarian/epub.py
+++ b/librarian/epub.py
@@ -3,13 +3,13 @@
 # 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
+from __future__ import print_function, unicode_literals
 
 import os
 import os.path
 import re
 import subprocess
-from StringIO import StringIO
+from six import BytesIO
 from copy import deepcopy
 from mimetypes import guess_type
 
@@ -19,7 +19,7 @@ from tempfile import mkdtemp, NamedTemporaryFile
 from shutil import rmtree
 
 from librarian import RDFNS, WLNS, NCXNS, OPFNS, XHTMLNS, DCNS, OutputFile
-from librarian.cover import DefaultEbookCover
+from librarian.cover import make_cover
 
 from librarian import functions, get_resource
 
@@ -29,12 +29,16 @@ functions.reg_person_name()
 functions.reg_lang_code_3to2()
 
 
+def squeeze_whitespace(s):
+    return re.sub(b'\\s+', b' ', s)
+
+
 def set_hyph_language(source_tree):
     def get_short_lng_code(text):
         result = ''
         text = ''.join(text)
         with open(get_resource('res/ISO-639-2_8859-1.txt'), 'rb') as f:
-            for line in f:
+            for line in f.read().decode('latin1').split('\n'):
                 list = line.strip().split('|')
                 if list[0] == text:
                     result = list[2]
@@ -73,12 +77,12 @@ def hyphenate_and_fix_conjunctions(source_tree, hyph):
 def inner_xml(node):
     """ returns node's text and children as a string
 
-    >>> print inner_xml(etree.fromstring('<a>x<b>y</b>z</a>'))
+    >>> print(inner_xml(etree.fromstring('<a>x<b>y</b>z</a>')))
     x<b>y</b>z
     """
 
     nt = node.text if node.text is not None else ''
-    return ''.join([nt] + [etree.tostring(child) for child in node])
+    return ''.join([nt] + [etree.tostring(child, encoding='unicode') for child in node])
 
 
 def set_inner_xml(node, text):
@@ -86,7 +90,7 @@ def set_inner_xml(node, text):
 
     >>> e = etree.fromstring('<a>b<b>x</b>x</a>')
     >>> set_inner_xml(e, 'x<b>y</b>z')
-    >>> print etree.tostring(e)
+    >>> print(etree.tostring(e, encoding='unicode'))
     <a>x<b>y</b>z</a>
     """
 
@@ -98,7 +102,7 @@ def set_inner_xml(node, text):
 def node_name(node):
     """ Find out a node's name
 
-    >>> print node_name(etree.fromstring('<a>X<b>Y</b>Z</a>'))
+    >>> print(node_name(etree.fromstring('<a>X<b>Y</b>Z</a>')))
     XYZ
     """
 
@@ -113,11 +117,13 @@ def node_name(node):
     return tempnode.text
 
 
-def xslt(xml, sheet):
+def xslt(xml, sheet, **kwargs):
     if isinstance(xml, etree._Element):
         xml = etree.ElementTree(xml)
     with open(sheet) as xsltf:
-        return xml.xslt(etree.parse(xsltf))
+        transform = etree.XSLT(etree.parse(xsltf))
+        params = dict((key, transform.strparam(value)) for key, value in kwargs.items())
+        return transform(xml, **params)
 
 
 def replace_characters(node):
@@ -166,8 +172,8 @@ class Stanza(object):
 
     >>> s = etree.fromstring("<strofa>a <b>c</b> <b>c</b>/\\nb<x>x/\\ny</x>c/ \\nd</strofa>")
     >>> Stanza(s).versify()
-    >>> print etree.tostring(s)
-    <strofa><wers_normalny>a <b>c</b> <b>c</b></wers_normalny><wers_normalny>b<x>x/
+    >>> print(etree.tostring(s, encoding='unicode'))
+    <strofa><wers_normalny>a <b>c</b><b>c</b></wers_normalny><wers_normalny>b<x>x/
     y</x>c</wers_normalny><wers_normalny>d</wers_normalny></strofa>
 
     """
@@ -184,7 +190,7 @@ class Stanza(object):
         tail = self.stanza.tail
         self.stanza.clear()
         self.stanza.tail = tail
-        self.stanza.extend(self.verses)
+        self.stanza.extend(verse for verse in self.verses if verse.text or len(verse) > 0)
 
     def open_normal_verse(self):
         self.open_verse = self.stanza.makeelement("wers_normalny")
@@ -201,6 +207,8 @@ class Stanza(object):
         for i, verse_text in enumerate(re.split(r"/\s*\n", text)):
             if i:
                 self.open_normal_verse()
+            if not verse_text.strip():
+                continue
             verse = self.get_open_verse()
             if len(verse):
                 verse[-1].tail = (verse[-1].tail or "") + verse_text
@@ -317,8 +325,8 @@ class TOC(object):
         return "\n".join(texts)
 
     def html(self):
-        with open(get_resource('epub/toc.html')) as f:
-            t = unicode(f.read(), 'utf-8')
+        with open(get_resource('epub/toc.html'), 'rb') as f:
+            t = f.read().decode('utf-8')
         return t % self.html_part()
 
 
@@ -409,7 +417,7 @@ def transform_chunk(chunk_xml, chunk_no, annotations, empty=False, _empty_html_s
 
 
 def transform(wldoc, verbose=False, style=None, html_toc=False,
-              sample=None, cover=None, flags=None, hyphenate=False, ilustr_path=''):
+              sample=None, cover=None, flags=None, hyphenate=False, ilustr_path='', output_type='epub'):
     """ produces a EPUB file
 
     sample=n: generate sample e-book (with at least n paragraphs)
@@ -431,17 +439,15 @@ def transform(wldoc, verbose=False, style=None, html_toc=False,
         chars = set()
         if first:
             # write book title page
-            html_tree = xslt(wldoc.edoc, get_resource('epub/xsltTitle.xsl'))
+            html_tree = xslt(wldoc.edoc, get_resource('epub/xsltTitle.xsl'), outputtype=output_type)
             chars = used_chars(html_tree.getroot())
-            zip.writestr(
-                'OPS/title.html',
-                etree.tostring(
-                    html_tree, pretty_print=True, xml_declaration=True,
-                    encoding="utf-8",
-                    doctype='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"' +
-                            ' "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'
-                )
+            html_string = etree.tostring(
+                html_tree, pretty_print=True, xml_declaration=True,
+                encoding="utf-8",
+                doctype='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"' +
+                        ' "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'
             )
+            zip.writestr('OPS/title.html', squeeze_whitespace(html_string))
             # add a title page TOC entry
             toc.add(u"Strona tytułowa", "title.html")
         elif wldoc.book_info.parts:
@@ -458,7 +464,7 @@ def transform(wldoc, verbose=False, style=None, html_toc=False,
                     doctype='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"' +
                             ' "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'
                 )
-            zip.writestr('OPS/part%d.html' % chunk_counter, html_string)
+            zip.writestr('OPS/part%d.html' % chunk_counter, squeeze_whitespace(html_string))
             add_to_manifest(manifest, chunk_counter)
             add_to_spine(spine, chunk_counter)
             chunk_counter += 1
@@ -484,7 +490,7 @@ def transform(wldoc, verbose=False, style=None, html_toc=False,
 
                 toc.extend(chunk_toc)
                 chars = chars.union(chunk_chars)
-                zip.writestr('OPS/part%d.html' % chunk_counter, chunk_html)
+                zip.writestr('OPS/part%d.html' % chunk_counter, squeeze_whitespace(chunk_html))
                 add_to_manifest(manifest, chunk_counter)
                 add_to_spine(spine, chunk_counter)
                 chunk_counter += 1
@@ -528,27 +534,28 @@ def transform(wldoc, verbose=False, style=None, html_toc=False,
 
     functions.reg_mathml_epub(zip)
 
-    for i, filename in enumerate(os.listdir(ilustr_path)):
-        file_path = os.path.join(ilustr_path, filename)
-        zip.write(file_path, os.path.join('OPS', filename))
-        image_id = 'image%s' % i
-        manifest.append(etree.fromstring(
-            '<item id="%s" href="%s" media-type="%s" />' % (image_id, filename, guess_type(file_path)[0])))
+    if os.path.isdir(ilustr_path):
+        for i, filename in enumerate(os.listdir(ilustr_path)):
+            file_path = os.path.join(ilustr_path, filename)
+            zip.write(file_path, os.path.join('OPS', filename))
+            image_id = 'image%s' % i
+            manifest.append(etree.fromstring(
+                '<item id="%s" href="%s" media-type="%s" />' % (image_id, filename, guess_type(file_path)[0])))
 
     # write static elements
     mime = zipfile.ZipInfo()
     mime.filename = 'mimetype'
     mime.compress_type = zipfile.ZIP_STORED
-    mime.extra = ''
-    zip.writestr(mime, 'application/epub+zip')
+    mime.extra = b''
+    zip.writestr(mime, b'application/epub+zip')
     zip.writestr(
         'META-INF/container.xml',
-        '<?xml version="1.0" ?>'
-        '<container version="1.0" '
-        'xmlns="urn:oasis:names:tc:opendocument:xmlns:container">'
-        '<rootfiles><rootfile full-path="OPS/content.opf" '
-        'media-type="application/oebps-package+xml" />'
-        '</rootfiles></container>'
+        b'<?xml version="1.0" ?>'
+        b'<container version="1.0" '
+        b'xmlns="urn:oasis:names:tc:opendocument:xmlns:container">'
+        b'<rootfiles><rootfile full-path="OPS/content.opf" '
+        b'media-type="application/oebps-package+xml" />'
+        b'</rootfiles></container>'
     )
     zip.write(get_resource('res/wl-logo-small.png'),
               os.path.join('OPS', 'logo_wolnelektury.png'))
@@ -560,9 +567,9 @@ def transform(wldoc, verbose=False, style=None, html_toc=False,
 
     if cover:
         if cover is True:
-            cover = DefaultEbookCover
+            cover = make_cover
 
-        cover_file = StringIO()
+        cover_file = BytesIO()
         bound_cover = cover(document.book_info)
         bound_cover.save(cover_file)
         cover_name = 'cover.%s' % bound_cover.ext()
@@ -595,12 +602,12 @@ def transform(wldoc, verbose=False, style=None, html_toc=False,
     annotations = etree.Element('annotations')
 
     toc_file = etree.fromstring(
-        '<?xml version="1.0" encoding="utf-8"?><!DOCTYPE ncx PUBLIC '
-        '"-//NISO//DTD ncx 2005-1//EN" '
-        '"http://www.daisy.org/z3986/2005/ncx-2005-1.dtd">'
-        '<ncx xmlns="http://www.daisy.org/z3986/2005/ncx/" xml:lang="pl" '
-        'version="2005-1"><head></head><docTitle></docTitle><navMap>'
-        '</navMap></ncx>'
+        b'<?xml version="1.0" encoding="utf-8"?><!DOCTYPE ncx PUBLIC '
+        b'"-//NISO//DTD ncx 2005-1//EN" '
+        b'"http://www.daisy.org/z3986/2005/ncx-2005-1.dtd">'
+        b'<ncx xmlns="http://www.daisy.org/z3986/2005/ncx/" xml:lang="pl" '
+        b'version="2005-1"><head></head><docTitle></docTitle><navMap>'
+        b'</navMap></ncx>'
     )
     nav_map = toc_file[-1]
 
@@ -638,23 +645,23 @@ def transform(wldoc, verbose=False, style=None, html_toc=False,
         '<item id="support" href="support.html" media-type="application/xhtml+xml" />'))
     spine.append(etree.fromstring(
         '<itemref idref="support" />'))
-    html_string = open(get_resource('epub/support.html')).read()
+    html_string = open(get_resource('epub/support.html'), 'rb').read()
     chars.update(used_chars(etree.fromstring(html_string)))
-    zip.writestr('OPS/support.html', html_string)
+    zip.writestr('OPS/support.html', squeeze_whitespace(html_string))
 
     toc.add("Strona redakcyjna", "last.html")
     manifest.append(etree.fromstring(
         '<item id="last" href="last.html" media-type="application/xhtml+xml" />'))
     spine.append(etree.fromstring(
         '<itemref idref="last" />'))
-    html_tree = xslt(document.edoc, get_resource('epub/xsltLast.xsl'))
+    html_tree = xslt(document.edoc, get_resource('epub/xsltLast.xsl'), outputtype=output_type)
     chars.update(used_chars(html_tree.getroot()))
-    zip.writestr('OPS/last.html', etree.tostring(
+    zip.writestr('OPS/last.html', squeeze_whitespace(etree.tostring(
         html_tree, pretty_print=True, xml_declaration=True,
         encoding="utf-8",
         doctype='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" ' +
                 '"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'
-    ))
+    )))
 
     if not flags or 'without-fonts' not in flags:
         # strip fonts
@@ -670,11 +677,13 @@ def transform(wldoc, verbose=False, style=None, html_toc=False,
                               ''.join(chars).encode('utf-8'),
                               get_resource('fonts/' + fname),
                               os.path.join(tmpdir, fname)]
+            env = {"PERL_USE_UNSAFE_INC": "1"}
             if verbose:
-                print "Running font-optimizer"
-                subprocess.check_call(optimizer_call)
+                print("Running font-optimizer")
+                subprocess.check_call(optimizer_call, env=env)
             else:
-                subprocess.check_call(optimizer_call, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+                dev_null = open(os.devnull, 'w')
+                subprocess.check_call(optimizer_call, stdout=dev_null, stderr=dev_null, env=env)
             zip.write(os.path.join(tmpdir, fname), os.path.join('OPS', fname))
             manifest.append(etree.fromstring(
                 '<item id="%s" href="%s" media-type="application/x-font-truetype" />' % (fname, fname)))