From 9d8722a1aa95559f0f1bbc1a2adf4548ee8b3fe2 Mon Sep 17 00:00:00 2001
From: Tobias Markmann <tm@ayena.de>
Date: Thu, 13 Mar 2014 17:20:07 +0100
Subject: [PATCH] Add support for inline images to gen.py's PDF output. (Thanks
 to m&m and intosi for their help.)

---
 gen.py        | 36 ++++++++++++++++++++++++++++++++++--
 xep2texml.xsl | 11 +++++++++++
 2 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/gen.py b/gen.py
index 63b7daa9..ff25414a 100755
--- a/gen.py
+++ b/gen.py
@@ -45,6 +45,10 @@ from xeputil import getLatestXEPFilename
 
 from xml.dom.minidom import parse,parseString,Document,getDOMImplementation
 
+# for serializing inline images
+import base64
+import urlparse
+
 XEPPATH = "/var/www/vhosts/xmpp.org/extensions"
 CONFIGPATH = "/var/local/xsf"
 
@@ -54,6 +58,33 @@ last_build = {}
 
 files_to_delete = [];
 
+def serializeInlineImage(output_dir, no, attrValue):
+	up = urlparse.urlparse(attrValue)
+	head, data = up.path.split(',')
+	bits = head.split(';')
+	mime_type = bits[0] if bits[0] else 'text/plain'
+	charset, b64 = 'ASCII', False
+	for bit in bits[1]:
+		if bit.startswith('charset='):
+			charset = bit[8:]
+		elif bit == 'base64':
+			b64 = True
+
+	# Do something smart with charset and b64 instead of assuming
+	plaindata = base64.b64decode(data)
+
+	# Do something smart with mime_type
+	if mime_type in ('image/png'):
+		file_ext = mime_type.split('/')[1]
+		with open(output_dir + '/' + 'inlineimage-' + str(no) + '.' + file_ext, 'wb') as f:
+			f.write(plaindata)
+
+def serializeXEPInlineImages(output_dir, filename):
+	dom = parse(filename)
+	imgs = dom.getElementsByTagName('img')
+	for (no, img) in enumerate(imgs):
+		serializeInlineImage(output_dir, no, img.attributes["src"].value)
+
 def getText(nodelist):
     thisText = ""
     for node in nodelist:
@@ -239,7 +270,8 @@ def buildXHTML( file, nr ):
 	return True
 
 def buildPDF( file, nr ):
-    	
+	serializeXEPInlineImages("/tmp/xepbuilder", file)
+
 	error, desc = executeCommand("xsltproc -o /tmp/xepbuilder/xep-" + nr + ".tex.xml xep2texml.xsl " + file)
 	if not checkError(error, desc):
 		return False
@@ -386,7 +418,7 @@ def main(argv):
 	
 	executeCommand("sed -e '1s/<?[^?]*?>//' " + CONFIGPATH + "/extensions.xml > " + XEPPATH + "/../includes/xeplist.txt")
 	
-	executeCommand("rm -rfd /tmp/xepbuilder")
+	#executeCommand("rm -rfd /tmp/xepbuilder")
 	
 	makeBundle()
 	
diff --git a/xep2texml.xsl b/xep2texml.xsl
index f20c28d4..b1dfee6e 100755
--- a/xep2texml.xsl
+++ b/xep2texml.xsl
@@ -91,6 +91,8 @@
 \usepackage{varwidth}
 \usepackage{titling}
 \usepackage{titletoc}
+\usepackage{float}
+\usepackage{adjustbox}
 
 \usepackage{hyphenat}
 
@@ -403,6 +405,15 @@
   </xsl:if>
 </xsl:template>
 
+<!-- img -->
+<xsl:template match="img">
+  <env name="figure"><opt>H</opt>
+    <cmd name="centering" />
+    <!--<cmd name="includegraphics"><opt><TeXML escape="0">width=.9\textwidth</TeXML></opt><parm>inlineimage-<xsl:value-of select="count(preceding::img)" /></parm></cmd>-->
+    <cmd name="adjustimage"><parm><TeXML escape="0">max size={.9\textwidth}{.9\textheight}</TeXML></parm><parm>inlineimage-<xsl:value-of select="count(preceding::img)" /></parm></cmd>
+  </env>
+</xsl:template>
+
 <!-- section3 -->
 <xsl:template match="section3">
   <cmd name="subsubsection" nl2="1">