Immediate add to path for the calling process

editenv.cpp

@@ -22,6 +22,9 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 #include <limits>
+#define NOMINMAX
+#include <windows.h>
+#undef NOMINMAX
 
 #include "editenv.hpp"
 
@@ -100,6 +103,39 @@ void pathAdd (env_scope scope, char const *path)
     }
 }
 
+void pathAddImmediate (env_scope scope, char const *path)
+{
+	size_t const sizeMax = std::numeric_limits<size_t>::max();
+
+	size_t      length = std::string(path).length();
+	size_t      pos;
+
+	char currPath[8096] = {0};
+	GetEnvironmentVariableA("PATH", currPath, 8096);
+
+	std::string value = currPath;
+	pos = value.find(path, 0);
+	while (sizeMax != pos) {
+		if (((0 == pos) ||
+			(';' == value[pos - 1])) &&
+			((pos + length == value.length()) ||
+			(';' == value[pos + length]))) {
+				// Found the path in the "Path" environment variable already.
+				return;
+		}
+		pos = value.find(path, pos + 1);
+	}
+
+	if (0 != value.length()) {
+		// Nothing is in the Path environment variable yet.
+		value.append(";");
+	}
+	value.append(path);
+
+	// add to local process
+	SetEnvironmentVariableA("PATH", value.c_str());
+}
+
 // Removes all matching instances of the specified path from the Path
 // environment variable.
 unsigned int pathRemove (env_scope scope, char const *path)

editenv.hpp

@@ -109,6 +109,10 @@ EDITENV_API char const * envValue (editenv::env_scope scope, char const *name);
 // Return Value: Nothing.
 EDITENV_API void pathAdd (editenv::env_scope, char const *path);
 
+// Almost the same as pathAdd, but only adds to the local path variable for
+// the calling process.
+EDITENV_API void pathAddImmediate (editenv::env_scope, char const *path);
+
 // Removes all matching instances of the specified path from the Path
 // environment variable.
 //

editenv.rc

@@ -53,8 +53,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 0,9,1,0
- PRODUCTVERSION 0,9,1,0
+ FILEVERSION 0,9,2,0
+ PRODUCTVERSION 0,9,2,0
  FILEFLAGSMASK 0x17L
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -70,12 +70,12 @@ BEGIN
         BLOCK "040904b0"
         BEGIN
             VALUE "FileDescription", "Environment Variable Editor DLL"
-            VALUE "FileVersion", "0, 9, 1, 0"
+            VALUE "FileVersion", "0, 9, 2, 0"
             VALUE "InternalName", "editenv"
             VALUE "LegalCopyright", "Copyright (C) 2009"
             VALUE "OriginalFilename", "editenv.dll"
             VALUE "ProductName", "editenv"
-            VALUE "ProductVersion", "0, 9, 1, 0"
+            VALUE "ProductVersion", "0, 9, 2, 0"
         END
     END
     BLOCK "VarFileInfo"