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-
-
-
- import java.io.*;
- import java.nio.channels.*;
- import java.nio.*;
- import java.util.StringTokenizer;
-
- public class HelperUtility {
-
-
-
-
- static {
- loadFromJar();
- }
-
-
-
- private static void loadFromJar() {
-
- String os = System.getProperty("os.name").toLowerCase();
- String path = "CC_";
- if (os.indexOf("windows") > -1) {
- loadLib(path, "Serial.dll");
- } else if (os.indexOf("mac") > -1) {
- loadLib(path, "libSerial.jnilib");
- } else {
- loadLib(path, "libSerial.so");
- }
- }
-
-
-
- private static void loadLib(String path, String name) {
- try {
-
- InputStream in = HelperUtility.class.getResourceAsStream(name);
- File fileOut = new File(System.getProperty("java.io.tmpdir") + "/" + path + name);
- OutputStream out = new FileOutputStream(fileOut);
- ReadableByteChannel inChannel = Channels.newChannel(in);
- WritableByteChannel outChannel = Channels.newChannel(out);
- fastChannelCopy(inChannel, outChannel);
- inChannel.close();
- outChannel.close();
- path = fileOut.getPath();
- try {
- System.load(path);
- } catch (UnsatisfiedLinkError e) {
- System.out.println("ERROR: Library does not exist!");
- return;
- } catch (SecurityException e) {
- System.out.println("ERROR: Not allowed to load Library!");
- return;
- } catch (NullPointerException e) {
- System.out.println("ERROR: Library name is null!");
- return;
- } catch (Exception e) {
- System.out.println("ERROR: " + e.toString());
- return;
- }
- System.out.println("Loaded Serial Library at \"" + path + "\"");
- return;
- } catch (Exception e) {
- System.out.println("ERROR: Failed to load Serial Library:");
- e.printStackTrace();
- return;
- }
- }
-
-
-
-
- public static String[] getPorts() {
- String portLines = getPortsOS();
- if (portLines == null) {
- String[] ports = { "No serial ports!" };
- return ports;
- } else {
- StringTokenizer sT = new StringTokenizer(portLines, "\n");
- int size = sT.countTokens();
- String[] ports = new String[size];
- for (int i = 0; i < size; i++) {
- ports[i] = sT.nextToken();
- }
- return ports;
- }
- }
-
-
-
- private static String getPortsOS() {
- String os = System.getProperty("os.name").toLowerCase();
- try {
- if (os.indexOf("windows") > -1) {
- return getThePorts("COM");
- } else if (os.indexOf("mac") > -1) {
- return getThePorts("tty.");
- } else {
- return getThePorts("tty");
- }
- } catch (UnsatisfiedLinkError e) {
- System.out.println("ERROR: Library not loaded! (getPorts)");
- return "Serial Library Error!\n";
- }
- }
-
- private static native String getThePorts(String search);
-
-
-
- public static boolean openPort(String name) {
- try {
- return openPortNative(name);
- } catch (UnsatisfiedLinkError e) {
- System.out.println("ERROR: Library not loaded! (openPort)");
- return false;
- }
- }
-
- private static native boolean openPortNative(String name);
-
-
-
- public static void closePort() {
- try {
- closePortNative();
- } catch (UnsatisfiedLinkError e) {
- System.out.println("ERROR: Library not loaded! (closePort)");
- }
- }
-
- private static native void closePortNative();
-
-
-
- public static short[] readData(int length) {
- try {
- return readDataNative(length);
- } catch (UnsatisfiedLinkError e) {
- System.out.println("ERROR: Library not loaded! (readData)");
- return null;
- }
- }
-
- private static native short[] readDataNative(int length);
-
-
-
- public static void writeData(short[] data, int length) {
- try {
- writeDataNative(data, length);
- } catch (UnsatisfiedLinkError e) {
- System.out.println("ERROR: Library not loaded! (writeData)");
- }
- }
-
- private static native void writeDataNative(short[] data, int length);
-
-
- private static void fastChannelCopy(ReadableByteChannel src, WritableByteChannel dest) throws IOException {
- ByteBuffer buffer = ByteBuffer.allocateDirect(16 * 1024);
- while (src.read(buffer) != -1) {
-
- buffer.flip();
-
- dest.write(buffer);
-
-
- buffer.compact();
- }
-
- buffer.flip();
-
- while (buffer.hasRemaining()) {
- dest.write(buffer);
- }
- }
- }
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