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@tiagoengel
Last active August 8, 2021 14:43
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package systextil.commons.io.path;
import java.io.File;
import com.sun.jna.Library;
import com.sun.jna.Native;
import com.sun.jna.NativeMapped;
import com.sun.jna.PointerType;
import com.sun.jna.win32.W32APIOptions;
/*package*/ class WindowsPaths extends SystemPaths {
@Override
public File getCommonAppData(String appName) {
return join(getPath(Shell32.CSIDL_COMMON_APPDATA), appName);
}
@Override
public File getLocalAppData(String appName) {
return join(getPath(Shell32.CSIDL_LOCAL_APPDATA), appName);
}
private synchronized String getPath(int pathType) {
HWND hwndOwner = null;
int nFolder = pathType;
HANDLE hToken = null;
int dwFlags = Shell32.SHGFP_TYPE_CURRENT;
char[] pszPath = new char[Shell32.MAX_PATH];
int hResult = Shell32.INSTANCE.SHGetFolderPath(hwndOwner, nFolder, hToken, dwFlags, pszPath);
if (Shell32.S_OK == hResult) {
String path = new String(pszPath);
int len = path.indexOf('\0');
return path.substring(0, len);
} else {
throw new RuntimeException("Unable to load path. Error code: " + hResult);
}
}
private class HANDLE extends PointerType implements NativeMapped {}
private class HWND extends HANDLE {}
private interface Shell32 extends Library {
static final int MAX_PATH = 260;
static final int CSIDL_LOCAL_APPDATA = 0x001c;
static final int CSIDL_COMMON_APPDATA = 0x0023;
static final int SHGFP_TYPE_CURRENT = 0;
static final int S_OK = 0;
static Shell32 INSTANCE = (Shell32) Native.loadLibrary("shell32", Shell32.class, W32APIOptions.UNICODE_OPTIONS);
/**
* @see <a href="http://msdn.microsoft.com/en-us/library/bb762181(VS.85).aspx">SHGetFolderPath</a>
*/
public int SHGetFolderPath(HWND hwndOwner, int nFolder, HANDLE hToken, int dwFlags, char[] pszPath);
}
}
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