CTest: Fix locale used for VCS updates

6a661f06030b85b4484733375bbb0aa23eca7446 fixed the
locale used for message output but at the same time broke the locale
used for filename encodings.

This commit preserves LC_CTYPE in the presence of LC_ALL.

1 files changed, 67 insertions, 0 deletions

diff --git a/Source/cmCLocaleEnvironmentScope.cxx b/Source/cmCLocaleEnvironmentScope.cxx
new file mode 100644
index 0000000..5792302
--- /dev/null
+++ b/Source/cmCLocaleEnvironmentScope.cxx
@@ -0,0 +1,67 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2015 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 "cmCLocaleEnvironmentScope.h"
+
+#include "cmSystemTools.h"
+
+#include <sstream>
+
+cmCLocaleEnvironmentScope::cmCLocaleEnvironmentScope()
+{
+  this->SetEnv("LANGUAGE", "");
+  this->SetEnv("LC_MESSAGES", "C");
+
+  std::string lcAll = this->GetEnv("LC_ALL");
+
+  if(!lcAll.empty())
+    {
+    this->SetEnv("LC_ALL", "");
+    this->SetEnv("LC_CTYPE", lcAll);
+    }
+}
+
+std::string cmCLocaleEnvironmentScope::GetEnv(std::string const& key)
+{
+  const char* value = cmSystemTools::GetEnv(key);
+  return value ? value : std::string();
+}
+
+void cmCLocaleEnvironmentScope::SetEnv(
+  std::string const& key, std::string const& value)
+{
+  std::string oldValue = this->GetEnv(key);
+
+  this->EnvironmentBackup.insert(std::make_pair(key, oldValue));
+
+  if(value.empty())
+    {
+    cmSystemTools::UnsetEnv(key.c_str());
+    }
+  else
+    {
+    std::stringstream tmp;
+    tmp << key << "=" << value;
+    cmSystemTools::PutEnv(tmp.str());
+    }
+}
+
+cmCLocaleEnvironmentScope::~cmCLocaleEnvironmentScope()
+{
+  for(backup_map_t::const_iterator i = this->EnvironmentBackup.begin();
+    i != this->EnvironmentBackup.end(); ++i)
+    {
+    std::stringstream tmp;
+    tmp << i->first << "=" << i->second;
+    cmSystemTools::PutEnv(tmp.str());
+    }
+}