/* * Copyright (C) 2005 by Enrico Chiaretti - enrico.chiaretti@gmail.com This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *//* * ChannelFactory.java * * Created on 5 giugno 2005, 13.29 *//** this class creates / reads the channel list * @author enrico chiaretti */public class ChannelFactory{        private java.util.Vector mChannels = null;    private static int ST_INIT = -1;    private static int ST_READY = 0;    private static int ST_EOL = 1;    private static int ST_EOF = 2;    private int mstatus = -1;    /**     * Creates a new instance of ChannelFactory.     * the default constructor generates my favorites channels and frequencies.     * Moreover, it reads the user home directory, needed to save the channel list     * text file.     */    // creates the default channel list: PAL ITALY, Monte Nerone    public ChannelFactory()    {        mChannels = new java.util.Vector();        defaultChannels();    }        public ChannelFactory(java.util.Vector aChanList)    {        mChannels = aChanList;    }    /**     * Creates a new instance of ChannelFactory.     * reads the channels from file. If fails, create the default list     * @param TextFile this tells where to load / save the channel list text file, so the end user can     * edit at his own will.     */    public ChannelFactory(String TextFile)    {        mChannels = new java.util.Vector();        read(TextFile);    }        private void defaultChannels()    {        mChannels.clear();        mChannels.add(new TvChannel(1,   "Rai1", "E", "",    183750));        mChannels.add(new TvChannel(2,	"Rai2",	"33", "",   567250));        mChannels.add(new TvChannel(3,	"Rai3",	"54", "",   735250));        mChannels.add(new TvChannel(4,	"Rete4","34", "", 	575250));        mChannels.add(new TvChannel(5,	"Canale5", "39", "", 615250));        mChannels.add(new TvChannel(6,	"Italia1",	"50", "",	703250));        mChannels.add(new TvChannel(7,	"7Gold"	,"68", "Italia 7 Gold", 	847250));        mChannels.add(new TvChannel(8,	"La8",	"38", "", 607250));        mChannels.add(new TvChannel(9,	"TeleCentro", "60", "", 783250));        mChannels.add(new TvChannel(10, 	"TeleRomagna",	"49", "",	695250));        mChannels.add(new TvChannel(11,	"ITV",	"57", "", 759250));        mChannels.add(new TvChannel(12,	"MTV",	"28", "",	527250));        mChannels.add(new TvChannel(13,	"TeleSanterno",	"63", "",	807250));        mChannels.add(new TvChannel(14,	"SanMarino",	"H1", "",	217250));        mChannels.add(new TvChannel(15,	"SI",	"45", "",	663250));        mChannels.add(new TvChannel(16,	"Tele2000",	"29", "",	535250));        mChannels.add(new TvChannel(17,	"VCR",	"36", "Video Tape Recorder",	591250));    }            /** returns the active channel list to be displaied on the user form     * @return returns a Vector of TvChannel     */    public java.util.Vector getChannels()    {        // this is my default channel list, based on the italian frequencies        /*         * future release:         * read channel list from a text file.         * eventually, build a list editor form to add / change / remove channels         */        return mChannels;    }        /**     * this saves the channel list into a text file.     * @param FileName this tells where to save the channel list text file     */    public void save(String FileName) throws java.io.IOException    {        java.io.FileWriter OutFile = null;        TvChannel CurrChan = null;        String sFreq = null;        int i;                OutFile = new java.io.FileWriter(FileName);        for (i=0;i<mChannels.size();i++)        {            CurrChan = (TvChannel) mChannels.get(i);            if (CurrChan.freq.longValue() == 0)            {                sFreq = "";            }            else            {                sFreq = CurrChan.freq.toString();            }            OutFile.write(CurrChan.name + ", " + CurrChan.number + ", " + CurrChan.description + ", " + sFreq + ";\n");            System.out.println(CurrChan.index + ", " + CurrChan.name + ", " + CurrChan.number + ", " + CurrChan.description + ", " + sFreq);        }        OutFile.close();    }        /**     * this reads the channel list from the text file     * @param FileName this tells where to read the list from     */    public void read(String FileName)    {        java.io.FileReader InFile = null;        String ChanName = null;        String ChanDesc = null;        String ChanNum = null;        long chanFreq = 0;                mstatus = ST_INIT;        try        {            InFile = new java.io.FileReader(FileName);                        while(mstatus != ST_EOF)            {                ChanName = readWord(InFile); // required                ChanNum  = readWord(InFile); // required                                ChanDesc = readWord(InFile); // optional!!                if (mstatus == ST_EOL)                {                    // I just read frequency, not description!                    chanFreq = new Long(ChanDesc).longValue();                    ChanDesc = "";                }                else                {                    // now I can read frequency                    try                    {                        chanFreq = new Long(readWord(InFile)).longValue();                    }                    catch (Exception e) {};                }                                if (ChanName.length() > 0)                {                    mChannels.add(new TvChannel(mChannels.size() + 1, ChanName, ChanNum, ChanDesc, chanFreq));                }            }                        InFile.close();        }        catch (Exception e)        {            if (mChannels.size() == 0)            {                System.out.println("Error reading Channel List: not well formed!");                defaultChannels();            }        }            }        private String readWord(java.io.FileReader aInFile) throws java.io.IOException    {        StringBuffer Buf = new StringBuffer();        int i = -1;        char c = ' ';                mstatus = ST_INIT;                while(aInFile.ready() && mstatus == ST_INIT)        {            i = aInFile.read();            switch (i)            {                case ',':                    mstatus = ST_READY;                    break;                case ';':                    mstatus = ST_EOL;                    break;                case -1:                    break; // End of file!                case '\t':                case '\n':                    // skip char                default:                    Buf.append((char) i);            }                                }                if (Buf.length() == 0 && i == -1)        {            mstatus = ST_EOF;        }                return Buf.toString().trim();    }}