/*
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* Copyright 2009 Cedric Priscal
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android_serialport_api;
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import android.util.Log;
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import java.io.File;
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import java.io.FileReader;
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import java.io.IOException;
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import java.io.LineNumberReader;
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import java.util.Iterator;
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import java.util.Vector;
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public class SerialPortFinder {
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public class Driver {
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public Driver(String name, String root) {
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mDriverName = name;
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mDeviceRoot = root;
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}
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private String mDriverName;
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private String mDeviceRoot;
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Vector<File> mDevices = null;
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public Vector<File> getDevices() {
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if (mDevices == null) {
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mDevices = new Vector<File>();
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File dev = new File("/dev");
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File[] files = dev.listFiles();
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int i;
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for (i=0; i<files.length; i++) {
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if (files[i].getAbsolutePath().startsWith(mDeviceRoot)) {
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Log.d(TAG, "Found new device: " + files[i]);
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mDevices.add(files[i]);
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}
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}
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}
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return mDevices;
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}
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public String getName() {
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return mDriverName;
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}
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}
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private static final String TAG = "SerialPort";
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private Vector<Driver> mDrivers = null;
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Vector<Driver> getDrivers() throws IOException {
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if (mDrivers == null) {
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mDrivers = new Vector<Driver>();
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LineNumberReader r = new LineNumberReader(new FileReader("/proc/tty/drivers"));
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String l;
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while((l = r.readLine()) != null) {
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// Issue 3:
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// Since driver name may contain spaces, we do not extract driver name with split()
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String drivername = l.substring(0, 0x15).trim();
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String[] w = l.split(" +");
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if ((w.length >= 5) && (w[w.length-1].equals("serial"))) {
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Log.d(TAG, "Found new driver " + drivername + " on " + w[w.length-4]);
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mDrivers.add(new Driver(drivername, w[w.length-4]));
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}
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}
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r.close();
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}
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return mDrivers;
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}
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public String[] getAllDevices() {
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Vector<String> devices = new Vector<String>();
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// Parse each driver
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Iterator<Driver> itdriv;
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try {
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itdriv = getDrivers().iterator();
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while(itdriv.hasNext()) {
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Driver driver = itdriv.next();
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Iterator<File> itdev = driver.getDevices().iterator();
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while(itdev.hasNext()) {
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String device = itdev.next().getName();
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String value = String.format("%s", device);
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devices.add(value);
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}
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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return devices.toArray(new String[devices.size()]);
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}
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public String[] getAllDevicesPath() {
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Vector<String> devices = new Vector<String>();
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// Parse each driver
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Iterator<Driver> itdriv;
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try {
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itdriv = getDrivers().iterator();
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while(itdriv.hasNext()) {
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Driver driver = itdriv.next();
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Iterator<File> itdev = driver.getDevices().iterator();
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while(itdev.hasNext()) {
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String device = itdev.next().getAbsolutePath();
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devices.add(device);
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}
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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return devices.toArray(new String[devices.size()]);
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}
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}
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