added environment variable unicode functions

On Windows, environment variable names and values
can be in Unicode.

Change-Id: I49e4c28fd99614825800b724af80eca7419164c8
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

2 files changed, 20 insertions, 0 deletions

diff --git a/src/jomlib/helperfunctions.cpp b/src/jomlib/helperfunctions.cpp
index 6f4c63f..aa184d6 100644
--- a/src/jomlib/helperfunctions.cpp
+++ b/src/jomlib/helperfunctions.cpp
@@ -22,6 +22,7 @@
  ****************************************************************************/
 
 #include "helperfunctions.h"
+#include <qt_windows.h>
 
 /**
  * Splits the string, respects "foo bar" and "foo ""knuffi"" bar".
@@ -66,3 +67,19 @@ QString trimLeft(const QString &s)
         result.remove(0, 1);
     return result;
 }
+
+QString qGetEnvironmentVariable(const wchar_t *lpName)
+{
+    const size_t bufferSize = 32767;
+    TCHAR buffer[bufferSize];
+    if (GetEnvironmentVariable(lpName, buffer, bufferSize))
+        return QString::fromWCharArray(buffer);
+    return QString();
+}
+
+bool qSetEnvironmentVariable(const QString &name, const QString &value)
+{
+    return SetEnvironmentVariable(
+            reinterpret_cast<const wchar_t *>(name.utf16()),
+            reinterpret_cast<const wchar_t *>(value.utf16()));
+}
diff --git a/src/jomlib/helperfunctions.h b/src/jomlib/helperfunctions.h
index a5986e6..f2c80a8 100644
--- a/src/jomlib/helperfunctions.h
+++ b/src/jomlib/helperfunctions.h
@@ -71,3 +71,6 @@ QStringList splitCommandLine(QString commandLine);
  * Returns a copy of s with all whitespace removed from the left.
  */
 QString trimLeft(const QString &s);
+
+QString qGetEnvironmentVariable(const wchar_t *lpName);
+bool qSetEnvironmentVariable(const QString &name, const QString &value);