From 8753847055d89ceddc670fd9758c7dd665f899ab Mon Sep 17 00:00:00 2001
From: Bo Peng <bpeng@lyx.org>
Date: Thu, 20 Mar 2008 16:04:22 +0000
Subject: [PATCH] Listings: Move \label{} outside of caption={}

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@23853 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/insets/InsetListings.cpp | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/insets/InsetListings.cpp b/src/insets/InsetListings.cpp
index 1499790088..2768b831da 100644
--- a/src/insets/InsetListings.cpp
+++ b/src/insets/InsetListings.cpp
@@ -30,6 +30,8 @@
 #include "support/docstream.h"
 #include "support/lstrings.h"
 
+#include <boost/regex.hpp>
+
 #include <sstream>
 
 using namespace std;
@@ -37,6 +39,7 @@ using namespace lyx::support;
 
 namespace lyx {
 
+using boost::regex;
 
 char const lstinline_delimiters[] =
 	"!*()-=+|;:'\"`,<.>/?QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm";
@@ -276,7 +279,22 @@ docstring InsetListings::getCaption(OutputParams const & runparams) const
 					static_cast<InsetCaption *>(it->inset);
 				ins->getOptArg(ods, runparams);
 				ins->getArgument(ods, runparams);
-				return ods.str();
+				// the caption may contain \label{} but the listings
+				// package prefer caption={}, label={}
+				docstring cap = ods.str();
+				if (!contains(to_utf8(cap), "\\label{"))
+					return cap;
+				// convert from
+				//     blah1\label{blah2} blah3
+				// to
+				//     blah1 blah3},label={blah2
+				// to form options
+				//     caption={blah1 blah3},label={blah2}
+				//
+				// NOTE that } is not allowed in blah2.
+				regex const reg("(.*)\\\\label\\{(.*?)\\}(.*)");
+				string const new_cap("\\1\\3},label={\\2");
+				return from_utf8(regex_replace(to_utf8(cap), reg, new_cap));
 			}
 		}
 	}
-- 
2.39.2