From 035c7fabc3b82cbc9a346c11abe2e9462b4c0379 Mon Sep 17 00:00:00 2001
From: Anas Nashif <anas.nashif@intel.com>
Date: Tue, 30 Oct 2012 15:39:57 -0700
Subject: Imported Upstream version 2.8.9

---
 Source/cmRemoveCommand.cxx | 76 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 Source/cmRemoveCommand.cxx

(limited to 'Source/cmRemoveCommand.cxx')

diff --git a/Source/cmRemoveCommand.cxx b/Source/cmRemoveCommand.cxx
new file mode 100644
index 000000000..d80b3fe9f
--- /dev/null
+++ b/Source/cmRemoveCommand.cxx
@@ -0,0 +1,76 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#include "cmRemoveCommand.h"
+
+// cmRemoveCommand
+bool cmRemoveCommand
+::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
+{
+  if(args.size() < 1)
+    {
+    return true;
+    }
+
+  const char* variable = args[0].c_str(); // VAR is always first
+  // get the old value
+  const char* cacheValue
+    = this->Makefile->GetDefinition(variable);
+
+  // if there is no old value then return
+  if (!cacheValue)
+    {
+    return true;
+    }
+  
+  // expand the variable
+  std::vector<std::string> varArgsExpanded;
+  cmSystemTools::ExpandListArgument(cacheValue, varArgsExpanded);
+  
+  // expand the args
+  // check for REMOVE(VAR v1 v2 ... vn) 
+  std::vector<std::string> argsExpanded;
+  std::vector<std::string> temp;
+  for(unsigned int j = 1; j < args.size(); ++j)
+    {
+    temp.push_back(args[j]);
+    }
+  cmSystemTools::ExpandList(temp, argsExpanded);
+  
+  // now create the new value
+  std::string value;
+  for(unsigned int j = 0; j < varArgsExpanded.size(); ++j)
+    {
+    int found = 0;
+    for(unsigned int k = 0; k < argsExpanded.size(); ++k)
+      {
+      if (varArgsExpanded[j] == argsExpanded[k])
+        {
+        found = 1;
+        break;
+        }
+      }
+    if (!found)
+      {
+      if (value.size())
+        {
+        value += ";";
+        }
+      value += varArgsExpanded[j];
+      }
+    }
+  
+  // add the definition
+  this->Makefile->AddDefinition(variable, value.c_str());
+
+  return true;
+}
+
-- 
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