wrap class methods as functions when used as BookInfo validators

[librarian.git] / librarian / parser.py

diff --git a/librarian/parser.py b/librarian/parser.py
old mode 100755 (executable)
new mode 100644 (file)
index 225000b..2ece72f
--- a/librarian/parser.py
+++ b/librarian/parser.py
@@ -1,25 +1,9 @@
 # -*- coding: utf-8 -*-
 #
 # -*- coding: utf-8 -*-
 #

-#    This file is part of Librarian.
+# This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.

 #
 #

-#    Copyright © 2008,2009,2010 Fundacja Nowoczesna Polska <fundacja@nowoczesnapolska.org.pl>
-#    
-#    For full list of contributors see AUTHORS file. 
-#
-#    This program is free software: you can redistribute it and/or modify
-#    it under the terms of the GNU Affero General Public License as published by
-#    the Free Software Foundation, either version 3 of the License, or
-#    (at your option) any later version.
-#
-#    This program is distributed in the hope that it will be useful,
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#    GNU Affero General Public License for more details.
-#
-#    You should have received a copy of the GNU Affero General Public License
-#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
-from librarian import ValidationError, NoDublinCore,  ParseError
+from librarian import ValidationError, NoDublinCore,  ParseError, NoProvider

 from librarian import RDFNS
 from librarian import dcparser
 
 from librarian import RDFNS
 from librarian import dcparser
 


@@ -27,19 +11,22 @@ from xml.parsers.expat import ExpatError
 from lxml import etree
 from lxml.etree import XMLSyntaxError, XSLTApplyError
 
 from lxml import etree
 from lxml.etree import XMLSyntaxError, XSLTApplyError
 

+import os

 import re
 from StringIO import StringIO
 
 class WLDocument(object):
 import re
 from StringIO import StringIO
 
 class WLDocument(object):

-    LINE_SWAP_EXPR = re.compile(r'/\s', re.MULTILINE | re.UNICODE);
+    LINE_SWAP_EXPR = re.compile(r'/\s', re.MULTILINE | re.UNICODE)
+    provider = None

 
 

-    def __init__(self, edoc, parse_dublincore=True):
+    def __init__(self, edoc, parse_dublincore=True, provider=None, strict=False):

         self.edoc = edoc
         self.edoc = edoc

+        self.provider = provider

 
         root_elem = edoc.getroot()
 
         root_elem = edoc.getroot()

-       
+

         dc_path = './/' + RDFNS('RDF')
         dc_path = './/' + RDFNS('RDF')

-        
+

         if root_elem.tag != 'utwor':
             raise ValidationError("Invalid root element. Found '%s', should be 'utwor'" % root_elem.tag)
 
         if root_elem.tag != 'utwor':
             raise ValidationError("Invalid root element. Found '%s', should be 'utwor'" % root_elem.tag)
 


@@ -48,17 +35,18 @@ class WLDocument(object):
 
             if self.rdf_elem is None:
                 raise NoDublinCore('Document has no DublinCore - which is required.')
 
             if self.rdf_elem is None:
                 raise NoDublinCore('Document has no DublinCore - which is required.')

-            
-            self.book_info = dcparser.BookInfo.from_element(self.rdf_elem)
+
+            self.book_info = dcparser.BookInfo.from_element(
+                    self.rdf_elem, strict=strict)

         else:
             self.book_info = None
         else:
             self.book_info = None

-    
+

     @classmethod
     @classmethod

-    def from_string(cls, xml, swap_endlines=False, parse_dublincore=True):
-        return cls.from_file(StringIO(xml), swap_endlines, parse_dublincore=parse_dublincore)
+    def from_string(cls, xml, *args, **kwargs):
+        return cls.from_file(StringIO(xml), *args, **kwargs)

 
     @classmethod
 
     @classmethod

-    def from_file(cls, xmlfile, swap_endlines=False, parse_dublincore=True):
+    def from_file(cls, xmlfile, parse_dublincore=True, provider=None):

 
         # first, prepare for parsing
         if isinstance(xmlfile, basestring):
 
         # first, prepare for parsing
         if isinstance(xmlfile, basestring):


@@ -73,23 +61,54 @@ class WLDocument(object):
         if not isinstance(data, unicode):
             data = data.decode('utf-8')
 
         if not isinstance(data, unicode):
             data = data.decode('utf-8')
 

-        if swap_endlines:
-            data = cls.LINE_SWAP_EXPR.sub(u'<br />\n', data)
-    
+        data = data.replace(u'\ufeff', '')
+

         try:
             parser = etree.XMLParser(remove_blank_text=False)
         try:
             parser = etree.XMLParser(remove_blank_text=False)

-            return cls(etree.parse(StringIO(data), parser), parse_dublincore=parse_dublincore)
+            tree = etree.parse(StringIO(data.encode('utf-8')), parser)
+
+            return cls(tree, parse_dublincore=parse_dublincore, provider=provider)

         except (ExpatError, XMLSyntaxError, XSLTApplyError), e:
         except (ExpatError, XMLSyntaxError, XSLTApplyError), e:

-            raise ParseError(e)                  
+            raise ParseError(e)
+
+    def swap_endlines(self):
+        """Converts line breaks in stanzas into <br/> tags."""
+        # only swap inside stanzas
+        for elem in self.edoc.iter('strofa'):
+            for child in list(elem):
+                if child.tail:
+                    chunks = self.LINE_SWAP_EXPR.split(child.tail)
+                    ins_index = elem.index(child) + 1
+                    while len(chunks) > 1:
+                        ins = etree.Element('br')
+                        ins.tail = chunks.pop()
+                        elem.insert(ins_index, ins)
+                    child.tail = chunks.pop(0)
+            if elem.text:
+                chunks = self.LINE_SWAP_EXPR.split(elem.text)
+                while len(chunks) > 1:
+                    ins = etree.Element('br')
+                    ins.tail = chunks.pop()
+                    elem.insert(0, ins)
+                elem.text = chunks.pop(0)
+
+    def parts(self):
+        if self.provider is None:
+            raise NoProvider('No document provider supplied.')
+        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)

 
     def chunk(self, path):
 
     def chunk(self, path):

-        # convert the path to XPath        
+        # convert the path to XPath

         expr = self.path_to_xpath(path)
         elems = self.edoc.xpath(expr)
 
         if len(elems) == 0:
             return None
         expr = self.path_to_xpath(path)
         elems = self.edoc.xpath(expr)
 
         if len(elems) == 0:
             return None

-        else:        
+        else:

             return elems[0]
 
     def path_to_xpath(self, path):
             return elems[0]
 
     def path_to_xpath(self, path):


@@ -132,4 +151,52 @@ class WLDocument(object):
             except Exception, e:
                 unmerged.append( repr( (key, xpath, e) ) )
 
             except Exception, e:
                 unmerged.append( repr( (key, xpath, e) ) )
 

-        return unmerged
\ No newline at end of file
+        return unmerged
+
+    def clean_ed_note(self):
+        """ 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'))):
+            tail = node.tail
+            node.clear()
+            node.tag = 'span'
+            node.tail = tail
+
+    # Converters
+
+    def as_html(self, *args, **kwargs):
+        from librarian import html
+        return html.transform(self, *args, **kwargs)
+
+    def as_text(self, *args, **kwargs):
+        from librarian import text
+        return text.transform(self, *args, **kwargs)
+
+    def as_epub(self, *args, **kwargs):
+        from librarian import epub
+        return epub.transform(self, *args, **kwargs)
+
+    def as_pdf(self, *args, **kwargs):
+        from librarian import pdf
+        return pdf.transform(self, *args, **kwargs)
+
+    def as_mobi(self, *args, **kwargs):
+        from librarian import mobi
+        return mobi.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)
+            if ext:
+                save_path += '.%s' % ext
+        else:
+            save_path = output_path
+
+        output_file.save_as(save_path)