From d91c38e23ef889644b60edc147af325aead1ee34 Mon Sep 17 00:00:00 2001
From: Sengian <sengian1@gmail.com>
Date: Fri, 16 Jul 2010 09:20:21 +0200
Subject: [PATCH] Add superscript and subscript support in RTF

---
 resources/templates/rtf.xsl     | 21 ++++++++++++++++++++-
 src/calibre/ebooks/rtf/input.py |  4 +++-
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/resources/templates/rtf.xsl b/resources/templates/rtf.xsl
index 9199654665..74696f0857 100644
--- a/resources/templates/rtf.xsl
+++ b/resources/templates/rtf.xsl
@@ -111,7 +111,6 @@
                 or (@shadow = 'true')
                 or (@hidden = 'true')
                 or (@outline = 'true')
-
                 ">
                <emph rend = "paragraph-emph">
                     <xsl:apply-templates/>
@@ -277,6 +276,26 @@
                 <xsl:value-of select="count(preceding::rtf:footnote) + 1"/>
                 <xsl:text>]</xsl:text>
             </xsl:when>
+            <xsl:when test="(@superscript = 'true')">
+                <xsl:element name="sup">
+                    <xsl:element name="span">
+                        <xsl:attribute name="class">
+                            <c:inline-class/>
+                        </xsl:attribute>
+                        <xsl:apply-templates/>
+                    </xsl:element>
+                </xsl:element>
+            </xsl:when>
+            <xsl:when test="(@underscript = 'true')">
+                <xsl:element name="sub">
+                    <xsl:element name="span">
+                        <xsl:attribute name="class">
+                            <c:inline-class/>
+                        </xsl:attribute>
+                        <xsl:apply-templates/>
+                    </xsl:element>
+                </xsl:element>
+            </xsl:when>
             <xsl:otherwise>
                 <xsl:element name="span">
                     <xsl:attribute name="class">
diff --git a/src/calibre/ebooks/rtf/input.py b/src/calibre/ebooks/rtf/input.py
index d5e1a95157..7d25f4cb86 100644
--- a/src/calibre/ebooks/rtf/input.py
+++ b/src/calibre/ebooks/rtf/input.py
@@ -192,6 +192,7 @@ class RTFInput(InputFormatPlugin):
         from calibre.ebooks.rtf2xml.ParseRtf import RtfInvalidCodeException
         self.log = log
         self.log('Converting RTF to XML...')
+        #Name of the preprocesssed RTF file
         fname = self.preprocess(stream.name)
         try:
             xml = self.generate_xml(fname)
@@ -205,6 +206,7 @@ class RTFInput(InputFormatPlugin):
                 imap = self.extract_images(d[0])
             except:
                 self.log.exception('Failed to extract images...')
+        
         self.log('Parsing XML...')
         parser = etree.XMLParser(recover=True, no_network=True)
         doc = etree.fromstring(xml, parser=parser)
@@ -214,10 +216,10 @@ class RTFInput(InputFormatPlugin):
             name = imap.get(num, None)
             if name is not None:
                 pict.set('num', name)
+
         self.log('Converting XML to HTML...')
         inline_class = InlineClass(self.log)
         styledoc = etree.fromstring(P('templates/rtf.xsl', data=True))
-
         extensions = { ('calibre', 'inline-class') : inline_class }
         transform = etree.XSLT(styledoc, extensions=extensions)
         result = transform(doc)