From d003793402ee5e9c0ee2a5a7c96e03f67f7b84cc Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Sat, 3 May 2014 12:32:26 +0100
Subject: Add ids_equal().

---
 src/util.cc | 12 ++++++++++++
 src/util.h  |  1 +
 2 files changed, 13 insertions(+)

diff --git a/src/util.cc b/src/util.cc
index 80c3756b..3d37454f 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -40,6 +40,7 @@
 #include <libxml++/document.h>
 #include <openssl/sha.h>
 #include <boost/filesystem.hpp>
+#include <boost/algorithm/string.hpp>
 #include <stdexcept>
 #include <sstream>
 #include <iostream>
@@ -58,6 +59,7 @@ using std::ostream;
 using boost::shared_ptr;
 using boost::optional;
 using boost::function;
+using boost::algorithm::trim;
 using namespace dcp;
 
 /** Create a UUID.
@@ -356,3 +358,13 @@ dcp::relative_to_root (boost::filesystem::path root, boost::filesystem::path fil
 
 	return rel;
 }
+
+bool
+dcp::ids_equal (string a, string b)
+{
+	transform (a.begin(), a.end(), a.begin(), ::tolower);
+	transform (b.begin(), b.end(), b.begin(), ::tolower);
+	trim (a);
+	trim (b);
+	return a == b;
+}
diff --git a/src/util.h b/src/util.h
index d9f69b95..d3f212c7 100644
--- a/src/util.h
+++ b/src/util.h
@@ -77,6 +77,7 @@ extern std::string content_kind_to_string (ContentKind kind);
 extern ContentKind content_kind_from_string (std::string kind);
 extern bool empty_or_white_space (std::string s);
 extern boost::shared_ptr<XYZFrame> decompress_j2k (uint8_t* data, int64_t size, int reduce);
+extern bool ids_equal (std::string a, std::string b);
 
 extern void init ();
 
-- 
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