Python 3.4-3.7 support;

[librarian.git] / librarian / parser.py

diff --git a/librarian/parser.py b/librarian/parser.py
index e06c4d7..73ddd52 100644 (file)
--- a/librarian/parser.py
+++ b/librarian/parser.py
@@ -3,9 +3,11 @@
 # 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 unicode_literals
+
 from librarian import ValidationError, NoDublinCore,  ParseError, NoProvider
 from librarian import RDFNS
-from librarian.cover import DefaultEbookCover
+from librarian.cover import make_cover
 from librarian import dcparser
 
 from xml.parsers.expat import ExpatError
@@ -14,14 +16,15 @@ from lxml.etree import XMLSyntaxError, XSLTApplyError
 
 import os
 import re
-from StringIO import StringIO
+import six
+
 
 class WLDocument(object):
     LINE_SWAP_EXPR = re.compile(r'/\s', re.MULTILINE | re.UNICODE)
     provider = None
 
     def __init__(self, edoc, parse_dublincore=True, provider=None, 
-                    strict=False, meta_fallbacks=None):
+                 strict=False, meta_fallbacks=None):
         self.edoc = edoc
         self.provider = provider
 
@@ -44,14 +47,14 @@ class WLDocument(object):
             self.book_info = None
 
     @classmethod
-    def from_string(cls, xml, *args, **kwargs):
-        return cls.from_file(StringIO(xml), *args, **kwargs)
+    def from_bytes(cls, xml, *args, **kwargs):
+        return cls.from_file(six.BytesIO(xml), *args, **kwargs)
 
     @classmethod
     def from_file(cls, xmlfile, *args, **kwargs):
 
         # first, prepare for parsing
-        if isinstance(xmlfile, basestring):
+        if isinstance(xmlfile, six.text_type):
             file = open(xmlfile, 'rb')
             try:
                 data = file.read()
@@ -60,17 +63,17 @@ class WLDocument(object):
         else:
             data = xmlfile.read()
 
-        if not isinstance(data, unicode):
+        if not isinstance(data, six.text_type):
             data = data.decode('utf-8')
 
         data = data.replace(u'\ufeff', '')
 
         try:
             parser = etree.XMLParser(remove_blank_text=False)
-            tree = etree.parse(StringIO(data.encode('utf-8')), parser)
+            tree = etree.parse(six.BytesIO(data.encode('utf-8')), parser)
 
             return cls(tree, *args, **kwargs)
-        except (ExpatError, XMLSyntaxError, XSLTApplyError), e:
+        except (ExpatError, XMLSyntaxError, XSLTApplyError) as e:
             raise ParseError(e)
 
     def swap_endlines(self):
@@ -100,8 +103,7 @@ class WLDocument(object):
         if self.book_info is None:
             raise NoDublinCore('No Dublin Core in document.')
         for part_uri in self.book_info.parts:
-            yield self.from_file(self.provider.by_uri(part_uri),
-                    provider=self.provider)
+            yield self.from_file(self.provider.by_uri(part_uri), provider=self.provider)
 
     def chunk(self, path):
         # convert the path to XPath
@@ -122,7 +124,7 @@ class WLDocument(object):
                 parts.append(part)
             else:
                 tag, n = match.groups()
-                parts.append("*[%d][name() = '%s']" % (int(n)+1, tag) )
+                parts.append("*[%d][name() = '%s']" % (int(n)+1, tag))
 
         if parts[0] == '.':
             parts[0] = ''
@@ -135,11 +137,11 @@ class WLDocument(object):
     def update_dc(self):
         if self.book_info:
             parent = self.rdf_elem.getparent()
-            parent.replace( self.rdf_elem, self.book_info.to_etree(parent) )
+            parent.replace(self.rdf_elem, self.book_info.to_etree(parent))
 
     def serialize(self):
         self.update_dc()
-        return etree.tostring(self.edoc, encoding=unicode, pretty_print=True)
+        return etree.tostring(self.edoc, encoding='unicode', pretty_print=True)
 
     def merge_chunks(self, chunk_dict):
         unmerged = []
@@ -148,18 +150,18 @@ class WLDocument(object):
             try:
                 xpath = self.path_to_xpath(key)
                 node = self.edoc.xpath(xpath)[0]
-                repl = etree.fromstring(u"<%s>%s</%s>" %(node.tag, data, node.tag) )
+                repl = etree.fromstring(u"<%s>%s</%s>" % (node.tag, data, node.tag))
                 node.getparent().replace(node, repl)
-            except Exception, e:
-                unmerged.append( repr( (key, xpath, e) ) )
+            except Exception as e:
+                unmerged.append(repr((key, xpath, e)))
 
         return unmerged
 
-    def clean_ed_note(self):
+    def clean_ed_note(self, note_tag='nota_red'):
         """ deletes forbidden tags from nota_red """
 
-        for node in self.edoc.xpath('|'.join('//nota_red//%s' % tag for tag in
-                    ('pa', 'pe', 'pr', 'pt', 'begin', 'end', 'motyw'))):
+        for node in self.edoc.xpath('|'.join('//%s//%s' % (note_tag, tag) for tag in
+                                    ('pa', 'pe', 'pr', 'pt', 'begin', 'end', 'motyw'))):
             tail = node.tail
             node.clear()
             node.tag = 'span'
@@ -172,8 +174,7 @@ class WLDocument(object):
         """
         if self.book_info is None:
             raise NoDublinCore('No Dublin Core in document.')
-        persons = set(self.book_info.editors +
-                        self.book_info.technical_editors)
+        persons = set(self.book_info.editors + self.book_info.technical_editors)
         for child in self.parts():
             persons.update(child.editors())
         if None in persons:
@@ -208,18 +209,21 @@ class WLDocument(object):
 
     def as_cover(self, cover_class=None, *args, **kwargs):
         if cover_class is None:
-            cover_class = DefaultEbookCover
+            cover_class = make_cover
         return cover_class(self.book_info, *args, **kwargs).output_file()
 
-    def save_output_file(self, output_file, output_path=None,
-            output_dir_path=None, make_author_dir=False, ext=None):
+    # for debugging only
+    def latex_dir(self, *args, **kwargs):
+        kwargs['latex_dir'] = True
+        from librarian import pdf
+        return pdf.transform(self, *args, **kwargs)
+
+    def save_output_file(self, output_file, output_path=None, output_dir_path=None, make_author_dir=False, ext=None):
         if output_dir_path:
             save_path = output_dir_path
             if make_author_dir:
-                save_path = os.path.join(save_path,
-                        unicode(self.book_info.author).encode('utf-8'))
-            save_path = os.path.join(save_path,
-                                self.book_info.uri.slug)
+                save_path = os.path.join(save_path, six.text_type(self.book_info.author).encode('utf-8'))
+            save_path = os.path.join(save_path, self.book_info.url.slug)
             if ext:
                 save_path += '.%s' % ext
         else: