From 3f4064f7ac672a511937b0a8aba04f87eb831294 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 24 Feb 2009 15:43:06 -0500
Subject: [PATCH] ENH: Add cmCTest::DecodeURL method

This new method decodes the "percent-encoding" used in URL syntax.
---
 Source/cmCTest.cxx | 21 +++++++++++++++++++++
 Source/cmCTest.h   |  3 +++
 2 files changed, 24 insertions(+)

diff --git a/Source/cmCTest.cxx b/Source/cmCTest.cxx
index df7c11039..c1f2752e4 100644
--- a/Source/cmCTest.cxx
+++ b/Source/cmCTest.cxx
@@ -47,6 +47,7 @@
 #include <stdlib.h>
 #include <math.h>
 #include <float.h>
+#include <ctype.h>
 
 #include <memory> // auto_ptr
 
@@ -180,6 +181,26 @@ std::string cmCTest::MakeURLSafe(const std::string& str)
   return ost.str();
 }
 
+//----------------------------------------------------------------------------
+std::string cmCTest::DecodeURL(const std::string& in)
+{
+  std::string out;
+  for(const char* c = in.c_str(); *c; ++c)
+    {
+    if(*c == '%' && isxdigit(*(c+1)) && isxdigit(*(c+2)))
+      {
+      char buf[3] = {*(c+1), *(c+2), 0};
+      out.append(1, char(strtoul(buf, 0, 16)));
+      c += 2;
+      }
+    else
+      {
+      out.append(1, *c);
+      }
+    }
+  return out;
+}
+
 //----------------------------------------------------------------------
 cmCTest::cmCTest()
 {
diff --git a/Source/cmCTest.h b/Source/cmCTest.h
index 2839f307b..5e1612ec4 100644
--- a/Source/cmCTest.h
+++ b/Source/cmCTest.h
@@ -310,6 +310,9 @@ public:
   //! Make string safe to be send as an URL
   static std::string MakeURLSafe(const std::string&);
 
+  /** Decode a URL to the original string.  */
+  static std::string DecodeURL(const std::string&);
+
   //! Should ctect configuration be updated. When using new style ctest
   // script, this should be true.
   void SetSuppressUpdatingCTestConfiguration(bool val)