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Java > Open Source Codes > org > openlaszlo > iv > flash > util > DataSource


1 /*
2  * $Id: DataSource.java,v 1.3 2002/04/26 05:23:11 skavish Exp $
3  *
4  * ===========================================================================
5  *
6  * The JGenerator Software License, Version 1.0
7  *
8  * Copyright (c) 2000 Dmitry Skavish (skavish@usa.net). All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution, if
22  * any, must include the following acknowlegement:
23  * "This product includes software developed by Dmitry Skavish
24  * (skavish@usa.net, http://www.flashgap.com/)."
25  * Alternately, this acknowlegement may appear in the software itself,
26  * if and wherever such third-party acknowlegements normally appear.
27  *
28  * 4. The name "The JGenerator" must not be used to endorse or promote
29  * products derived from this software without prior written permission.
30  * For written permission, please contact skavish@usa.net.
31  *
32  * 5. Products derived from this software may not be called "The JGenerator"
33  * nor may "The JGenerator" appear in their names without prior written
34  * permission of Dmitry Skavish.
35  *
36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
39  * DISCLAIMED. IN NO EVENT SHALL DMITRY SKAVISH OR THE OTHER
40  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47  * SUCH DAMAGE.
48  *
49  */
50
51 package org.openlaszlo.iv.flash.util;
52
53 import java.io.*;
54
55 /**
56  * Simple text datasource.<P>
57  * Reads data from given {@link LineReader} line by line
58  * and construct 2 dimensional array of Strings
59  *
60  * @author Dmitry Skavish
61  * @see DataSourceHelper
62  * @see XMLDataSource
63  * @see Tokenizer
64  */
65 public class DataSource {
66
67     private LineReader reader;
68
69     public DataSource() {}
70
71     public DataSource( LineReader reader ) {
72         setReader( reader );
73     }
74
75     protected void setReader( LineReader reader ) {
76         this.reader = reader;
77     }
78
79     public String JavaDoc[][] getData() throws IOException {
80         IVVector lines = new IVVector();
81         IVVector curLine = new IVVector();
82
83         String JavaDoc line = reader.readLine();
84         while( line != null ) {
85             curLine.reset();
86
87             String JavaDoc token;
88             Tokenizer t = new Tokenizer(line);
89             while( (token=t.getToken()) != null ) {
90                 curLine.addElement( Util.processEscapes(token) );
91             }
92
93             if( curLine.size() > 0 ) {
94                 int size = curLine.size();
95                 if( lines.size() > 0 ) {
96                     int s = ((String JavaDoc[])lines.elementAt(0)).length;
97                     if( s > size ) size = s;
98                 }
99                 String JavaDoc[] sa = new String JavaDoc[size];
100                 curLine.copyInto(sa);
101                 for( int k=curLine.size(); k<size; k++ ) { sa[k] = ""; }
102                 lines.addElement(sa);
103             }
104
105             line = reader.readLine();
106         }
107
108         String JavaDoc[][] data = new String JavaDoc[lines.size()][];
109         lines.copyInto(data);
110         return data;
111     }
112
113 /* public static void main( String[] args ) {
114         try {
115             DataSource ds = new DataSource( new InputStreamLineReader( new FileInputStream(args[0]) ) );
116             String[][] data = ds.getData();
117             for( int i=0; i<data.length; i++ ) {
118                 String[] row = data[i];
119                 for( int j=0; j<row.length; j++ ) {
120                     System.out.print( "'"+row[j]+"'" );
121                     if( j+1<row.length ) System.out.print( "," );
122                     else System.out.println();
123                 }
124             }
125         } catch( Exception e ) {
126             System.out.println( e.getMessage() );
127             e.printStackTrace();
128         }
129     }
130 */
131 }
132
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