processing/app/src/processing/app/platform/WindowsRegistry.java at master · dimr/processing · GitHub

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package processing.app.platform;

import java.io.UnsupportedEncodingException;

import java.util.HashMap;

import java.util.TreeMap;

import java.util.TreeSet;

import com.sun.jna.platform.win32.Advapi32;

import com.sun.jna.platform.win32.WinBase;

import com.sun.jna.platform.win32.WinError;

import com.sun.jna.platform.win32.WinNT;

import com.sun.jna.platform.win32.WinReg;

import com.sun.jna.platform.win32.WinReg.HKEY;

import com.sun.jna.platform.win32.WinReg.HKEYByReference;

import com.sun.jna.ptr.IntByReference;

/**

* Methods for accessing the Windows Registry. Only String and DWORD values

* supported at the moment.

* <p>

* Not sure where this code came from originally (if you know the reference,

* please get in touch so that we can add a proper citation). Several changes

* were made to update it for JNA 3.5.2's platform classes and clean up the

* syntax to make it less like a C program. [fry 130720]

public class WindowsRegistry {

static public enum REGISTRY_ROOT_KEY {

CLASSES_ROOT, CURRENT_USER, LOCAL_MACHINE, USERS

};

//private final static HashMap<REGISTRY_ROOT_KEY, Integer> rootKeyMap = new HashMap<REGISTRY_ROOT_KEY, Integer>();

private final static HashMap<REGISTRY_ROOT_KEY, WinReg.HKEY> rootKeyMap =

new HashMap<REGISTRY_ROOT_KEY, WinReg.HKEY>();

static {

rootKeyMap.put(REGISTRY_ROOT_KEY.CLASSES_ROOT, WinReg.HKEY_CLASSES_ROOT);

rootKeyMap.put(REGISTRY_ROOT_KEY.CURRENT_USER, WinReg.HKEY_CURRENT_USER);

rootKeyMap.put(REGISTRY_ROOT_KEY.LOCAL_MACHINE, WinReg.HKEY_LOCAL_MACHINE);

rootKeyMap.put(REGISTRY_ROOT_KEY.USERS, WinReg.HKEY_USERS);

}

/**

* Gets one of the root keys.

* @param key key type

* @return root key

private static HKEY getRegistryRootKey(REGISTRY_ROOT_KEY key) {

//Advapi32 advapi32;

//IntByReference pHandle;

//int handle = 0;

Advapi32 advapi32 = Advapi32.INSTANCE;

// pHandle = new IntByReference();

HKEYByReference pHandle = new WinReg.HKEYByReference();

HKEY handle = null;

if (advapi32.RegOpenKeyEx(rootKeyMap.get(key), null, 0, 0, pHandle) == WinError.ERROR_SUCCESS) {

handle = pHandle.getValue();

}

return handle;

}

/**

* Opens a key.

* @param rootKey root key

* @param subKeyName name of the key

* @param access access mode

* @return handle to the key or 0

private static HKEY openKey(REGISTRY_ROOT_KEY rootKey, String subKeyName, int access) {

//Advapi32 advapi32;

//IntByReference pHandle;

//int rootKeyHandle;

Advapi32 advapi32 = Advapi32.INSTANCE;

HKEY rootKeyHandle = getRegistryRootKey(rootKey);

//pHandle = new IntByReference();

HKEYByReference pHandle = new HKEYByReference();

if (advapi32.RegOpenKeyEx(rootKeyHandle, subKeyName, 0, access, pHandle) == WinError.ERROR_SUCCESS) {

return pHandle.getValue();

} else {

return null;

}

/**

* Converts a Windows buffer to a Java String.

* @param buf buffer

* @throws java.io.UnsupportedEncodingException on error

* @return String

private static String convertBufferToString(byte[] buf) throws UnsupportedEncodingException {

return new String(buf, 0, buf.length - 2, "UTF-16LE");

}

/**

* Converts a Windows buffer to an int.

* @param buf buffer

* @return int

private static int convertBufferToInt(byte[] buf) {

return ((buf[0] & 0xff) +

((buf[1] & 0xff) << 8) +

((buf[2] & 0xff) << 16) +

((buf[3] & 0xff) << 24));

}

/**

* Read a String value.

* @param rootKey root key

* @param subKeyName key name

* @param name value name

* @throws java.io.UnsupportedEncodingException on error

* @return String or null

static public String getStringValue(REGISTRY_ROOT_KEY rootKey, String subKeyName, String name) throws UnsupportedEncodingException {

//Advapi32 advapi32;

//IntByReference pType, lpcbData;

byte[] lpData = new byte[1];

//int handle = 0;

Advapi32 advapi32 = Advapi32.INSTANCE;

IntByReference pType = new IntByReference();

IntByReference lpcbData = new IntByReference();

HKEY handle = openKey(rootKey, subKeyName, WinNT.KEY_READ);

String ret = null;

//if (handle != 0) {

if (handle != null) {

//if (advapi32.RegQueryValueEx(handle, name, null, pType, lpData, lpcbData) == WinError.ERROR_MORE_DATA) {

if (advapi32.RegQueryValueEx(handle, name, 0, pType, lpData, lpcbData) == WinError.ERROR_MORE_DATA) {

lpData = new byte[lpcbData.getValue()];

//if (advapi32.RegQueryValueEx(handle, name, null, pType, lpData, lpcbData) == WinError.ERROR_SUCCESS) {

if (advapi32.RegQueryValueEx(handle, name, 0, pType, lpData, lpcbData) == WinError.ERROR_SUCCESS) {

ret = convertBufferToString(lpData);

}

advapi32.RegCloseKey(handle);

}

return ret;

}

/**

* Read an int value.

* @return int or 0

* @param rootKey root key

* @param subKeyName key name

* @param name value name

static public int getIntValue(REGISTRY_ROOT_KEY rootKey, String subKeyName, String name) {

Advapi32 advapi32 = Advapi32.INSTANCE;

IntByReference pType = new IntByReference();

IntByReference lpcbData = new IntByReference();

HKEY handle = openKey(rootKey, subKeyName, WinNT.KEY_READ);

int ret = 0;

byte[] lpData = new byte[1];

//if(handle != 0) {

if (handle != null) {

//if (advapi32.RegQueryValueEx(handle, name, null, pType, lpData, lpcbData) == WinError.ERROR_MORE_DATA) {

if (advapi32.RegQueryValueEx(handle, name, 0, pType, lpData, lpcbData) == WinError.ERROR_MORE_DATA) {

lpData = new byte[lpcbData.getValue()];

//if(advapi32.RegQueryValueEx(handle, name, null, pType, lpData, lpcbData) == WinError.ERROR_SUCCESS) {

if (advapi32.RegQueryValueEx(handle, name, 0, pType, lpData, lpcbData) == WinError.ERROR_SUCCESS) {

ret = convertBufferToInt(lpData);

}

advapi32.RegCloseKey(handle);

}

return ret;

}

/**

* Delete a value.

* @param rootKey root key

* @param subKeyName key name

* @param name value name

* @return true on success

static public boolean deleteValue(REGISTRY_ROOT_KEY rootKey, String subKeyName, String name) {

Advapi32 advapi32 = Advapi32.INSTANCE;

//int handle;

HKEY handle = openKey(rootKey, subKeyName, WinNT.KEY_READ | WinNT.KEY_WRITE);

boolean ret = true;

//if(handle != 0) {

if (handle != null) {

if (advapi32.RegDeleteValue(handle, name) == WinError.ERROR_SUCCESS) {

ret = true;

}

advapi32.RegCloseKey(handle);

}

return ret;

}

/**

* Writes a String value.

* @param rootKey root key

* @param subKeyName key name

* @param name value name

* @param value value

* @throws java.io.UnsupportedEncodingException on error

* @return true on success

static public boolean setStringValue(REGISTRY_ROOT_KEY rootKey, String subKeyName, String name, String value) throws UnsupportedEncodingException {

//int handle;

//byte[] data;

// appears to be Java 1.6 syntax, removing [fry]

//data = Arrays.copyOf(value.getBytes("UTF-16LE"), value.length() * 2 + 2);

byte[] data = new byte[value.length() * 2 + 2];

byte[] src = value.getBytes("UTF-16LE");

System.arraycopy(src, 0, data, 0, src.length);

Advapi32 advapi32 = Advapi32.INSTANCE;

HKEY handle = openKey(rootKey, subKeyName, WinNT.KEY_READ | WinNT.KEY_WRITE);

boolean ret = false;

//if(handle != 0) {

if (handle != null) {

if (advapi32.RegSetValueEx(handle, name, 0, WinNT.REG_SZ, data, data.length) == WinError.ERROR_SUCCESS) {

ret = true;

}

advapi32.RegCloseKey(handle);

}

return ret;

}

/**

* Writes an int value.

* @return true on success

* @param rootKey root key

* @param subKeyName key name

* @param name value name

* @param value value

static public boolean setIntValue(REGISTRY_ROOT_KEY rootKey, String subKeyName, String name, int value) {

//Advapi32 advapi32;

//int handle;

//byte[] data;

byte[] data = new byte[4];

data[0] = (byte)(value & 0xff);

data[1] = (byte)((value >> 8) & 0xff);

data[2] = (byte)((value >> 16) & 0xff);

data[3] = (byte)((value >> 24) & 0xff);

Advapi32 advapi32 = Advapi32.INSTANCE;

HKEY handle = openKey(rootKey, subKeyName, WinNT.KEY_READ | WinNT.KEY_WRITE);

boolean ret = false;

//if(handle != 0) {

if (handle != null) {

if (advapi32.RegSetValueEx(handle, name, 0, WinNT.REG_DWORD, data, data.length) == WinError.ERROR_SUCCESS) {

ret = true;

}

advapi32.RegCloseKey(handle);

}

return ret;

}

/**

* Check for existence of a value.

* @param rootKey root key

* @param subKeyName key name

* @param name value name

* @return true if exists

static public boolean valueExists(REGISTRY_ROOT_KEY rootKey, String subKeyName, String name) {

//Advapi32 advapi32;

//IntByReference pType, lpcbData;

//int handle = 0;

Advapi32 advapi32 = Advapi32.INSTANCE;

IntByReference pType = new IntByReference();

IntByReference lpcbData = new IntByReference();

HKEY handle = openKey(rootKey, subKeyName, WinNT.KEY_READ);

byte[] lpData = new byte[1];

boolean ret = false;

//if(handle != 0) {

if (handle != null) {

//if (advapi32.RegQueryValueEx(handle, name, null, pType, lpData, lpcbData) != WinError.ERROR_FILE_NOT_FOUND) {

if (advapi32.RegQueryValueEx(handle, name, 0, pType, lpData, lpcbData) != WinError.ERROR_FILE_NOT_FOUND) {

ret = true;

} else {

ret = false;

}

advapi32.RegCloseKey(handle);

}

return ret;

}

/**

* Create a new key.

* @param rootKey root key

* @param parent name of parent key

* @param name key name

* @return true on success

static public boolean createKey(REGISTRY_ROOT_KEY rootKey, String parent, String name) {

//Advapi32 advapi32;

//IntByReference hkResult, dwDisposition;

//int handle = 0;

Advapi32 advapi32 = Advapi32.INSTANCE;

//IntByReference hkResult = new IntByReference();

HKEYByReference hkResult = new HKEYByReference();

IntByReference dwDisposition = new IntByReference();

HKEY handle = openKey(rootKey, parent, WinNT.KEY_READ);

boolean ret = false;

//if(handle != 0) {

if (handle != null) {

if (advapi32.RegCreateKeyEx(handle, name, 0, null, WinNT.REG_OPTION_NON_VOLATILE, WinNT.KEY_READ, null,

hkResult, dwDisposition) == WinError.ERROR_SUCCESS) {

ret = true;

advapi32.RegCloseKey(hkResult.getValue());

} else {

ret = false;

}

advapi32.RegCloseKey(handle);

}

return ret;

}

/**

* Delete a key.

* @param rootKey root key

* @param parent name of parent key

* @param name key name

* @return true on success

static public boolean deleteKey(REGISTRY_ROOT_KEY rootKey, String parent, String name) {

//Advapi32 advapi32;

//int handle = 0;

Advapi32 advapi32 = Advapi32.INSTANCE;

HKEY handle = openKey(rootKey, parent, WinNT.KEY_READ);

boolean ret = false;

//if(handle != 0) {

if (handle != null) {

if (advapi32.RegDeleteKey(handle, name) == WinError.ERROR_SUCCESS) {

ret = true;

} else {

ret = false;

}

advapi32.RegCloseKey(handle);

}

return ret;

}

/**

* Get all sub keys of a key.

* @param rootKey root key

* @param parent key name

* @return array with all sub key names

static public String[] getSubKeys(REGISTRY_ROOT_KEY rootKey, String parent) {

//Advapi32 advapi32;

//int handle = 0, dwIndex;

//char[] lpName;

//IntByReference lpcName;

//WinBase.FILETIME lpftLastWriteTime;

TreeSet<String> subKeys = new TreeSet<String>();

Advapi32 advapi32 = Advapi32.INSTANCE;

HKEY handle = openKey(rootKey, parent, WinNT.KEY_READ);

char[] lpName = new char[256];

IntByReference lpcName = new IntByReference(256);

WinBase.FILETIME lpftLastWriteTime = new WinBase.FILETIME();

//if(handle != 0) {

if (handle != null) {

int dwIndex = 0;

while (advapi32.RegEnumKeyEx(handle, dwIndex, lpName, lpcName, null,

null, null, lpftLastWriteTime) == WinError.ERROR_SUCCESS) {

subKeys.add(new String(lpName, 0, lpcName.getValue()));

lpcName.setValue(256);

dwIndex++;

}

advapi32.RegCloseKey(handle);

}

return subKeys.toArray(new String[] { });

}

/**

* Get all values under a key.

* @param rootKey root key

* @param key jey name

* @throws java.io.UnsupportedEncodingException on error

* @return TreeMap with name and value pairs

static public TreeMap<String, Object> getValues(REGISTRY_ROOT_KEY rootKey, String key) throws UnsupportedEncodingException {

//Advapi32 advapi32;

//int handle = 0, dwIndex, result = 0;

//char[] lpValueName;

//byte[] lpData;

//IntByReference lpcchValueName, lpType, lpcbData;

//String name;

TreeMap<String, Object> values =

new TreeMap<String, Object>(String.CASE_INSENSITIVE_ORDER);

Advapi32 advapi32 = Advapi32.INSTANCE;

HKEY handle = openKey(rootKey, key, WinNT.KEY_READ);

char[] lpValueName = new char[16384];

IntByReference lpcchValueName = new IntByReference(16384);

IntByReference lpType = new IntByReference();

byte[] lpData = new byte[1];

IntByReference lpcbData = new IntByReference();

//if(handle != 0) {

if (handle != null) {

int dwIndex = 0;

int result = 0;

String name;

do {

lpcbData.setValue(0);

result = advapi32.RegEnumValue(handle, dwIndex, lpValueName, lpcchValueName, null,

lpType, lpData, lpcbData);

if (result == WinError.ERROR_MORE_DATA) {

lpData = new byte[lpcbData.getValue()];

lpcchValueName = new IntByReference(16384);

result = advapi32.RegEnumValue(handle, dwIndex, lpValueName, lpcchValueName, null,

lpType, lpData, lpcbData);

if (result == WinError.ERROR_SUCCESS) {

name = new String(lpValueName, 0, lpcchValueName.getValue());

switch(lpType.getValue()) {

case WinNT.REG_SZ:

values.put(name, convertBufferToString(lpData));

break;

case WinNT.REG_DWORD:

values.put(name, convertBufferToInt(lpData));

break;

default:

break;

}

dwIndex++;

} while (result == WinError.ERROR_SUCCESS);

advapi32.RegCloseKey(handle);

}

return values;

}

processing/app/src/processing/app/platform/WindowsRegistry.java at master · dimr/processing · GitHub

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