New EPUB builder, other minor changes.

[librarian.git] / src / librarian / elements / base.py

diff --git a/src/librarian/elements/base.py b/src/librarian/elements/base.py
index b9df185..5317268 100644 (file)
--- a/src/librarian/elements/base.py
+++ b/src/librarian/elements/base.py
@@ -3,10 +3,13 @@
 import re
 from lxml import etree
 from librarian import dcparser, RDFNS
+from librarian.html import raw_printable_text
 from librarian.util import get_translation
 
 
 class WLElement(etree.ElementBase):
+    SECTION_PRECEDENCE = None
+
     TXT_TOP_MARGIN = 0
     TXT_BOTTOM_MARGIN = 0
     TXT_PREFIX = ""
@@ -15,17 +18,24 @@ class WLElement(etree.ElementBase):
     HTML_TAG = None
     HTML_ATTR = {}
     HTML_CLASS = None
-    
+
+    EPUB_TAG = None
+    EPUB_ATTR = {}
+    EPUB_CLASS = None
+    EPUB_START_CHUNK = False
+   
     CAN_HAVE_TEXT = True
     STRIP = False
 
     text_substitutions = [
         (u'---', u'—'),
         (u'--', u'–'),
-        (u'...', u'…'),
+        #(u'...', u'…'),  # Temporary turnoff for epub
         (u',,', u'„'),
         (u'"', u'”'),
         ('\ufeff', ''),
+
+        ("'", "\u2019"),    # This was enabled for epub.
     ]
 
     @property
@@ -52,11 +62,25 @@ class WLElement(etree.ElementBase):
     def gettext(self):
         return get_translation(self.meta.language).gettext
 
+    def raw_printable_text(self):
+        # TODO: podtagi, wyroznienia, etc
+        t = ''
+        t += self.normalize_text(self.text)
+        for c in self:
+            if c.tag not in ('pe', 'pa', 'pt', 'pr', 'motyw'):
+                t += c.raw_printable_text()
+            t += self.normalize_text(c.tail)
+        return t
+    
     def normalize_text(self, text):
         text = text or ''
         for e, s in self.text_substitutions:
             text = text.replace(e, s)
-        text = re.sub(r'\s+', ' ', text)
+            # FIXME: TEmporary turnoff
+#        text = re.sub(r'\s+', ' ', text)
+### TODO: Added now for epub
+        text = re.sub(r'(?<=\s\w)\s+', u'\u00A0', text)
+
         return text
 
     def _build_inner(self, builder, build_method):
@@ -118,6 +142,48 @@ class WLElement(etree.ElementBase):
         if self.HTML_TAG:
             builder.end_element()
 
+    def _epub_build_inner(self, builder):
+        self._build_inner(builder, 'epub_build')
+
+    def get_epub_attr(self, builder):
+        attr = self.EPUB_ATTR.copy()
+        if self.EPUB_CLASS:
+            attr['class'] = self.EPUB_CLASS
+        return attr
+
+    def epub_build(self, builder):
+        # TEMPORARY
+        self.CAN_HAVE_TEXT = True
+        self.STRIP = False
+        
+        if self.EPUB_START_CHUNK:
+            builder.start_chunk()
+
+        fragment = None
+        if self.SECTION_PRECEDENCE:
+            if not self.EPUB_START_CHUNK:
+                fragment = 'sub%d' % builder.assign_section_number()
+                self.attrib['id'] = fragment
+
+            builder.add_toc_entry(
+                fragment,
+                self.raw_printable_text(),
+                self.SECTION_PRECEDENCE
+            )
+            
+        if self.EPUB_TAG:
+            attr = self.get_epub_attr(builder)
+            if fragment:
+                attr['id'] = fragment
+            builder.start_element(
+                self.EPUB_TAG,
+                attr
+            )
+
+        self._epub_build_inner(builder)
+        if self.EPUB_TAG:
+            builder.end_element()
+            
     def sanitize(self):
         # TODO: Remove insanity here.
         for e in self: