summaryrefslogtreecommitdiff
path: root/odk/examples/DevelopersGuide/UCB/DataStreamRetriever.java
blob: 09549d11577956b31eeed5a4e0b355400629419d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
// base classes
import com.sun.star.ucb.*;
import com.sun.star.io.XActiveDataSink;
import com.sun.star.io.XInputStream;

/**
 * Accessing (Loading) the Content Data Stream of a UCB Document Content
 */
public class DataStreamRetriever {

    /**
     * Member properties
     */
    private  Helper   m_helper;
    private  XContent m_content;
    private  String   m_connectString = "";
    private  String   m_contenturl    = "";

    /**
     * Constructor.
     *
     *@param      String[]   This construtor requires the arguments:
     *                          -connect=socket,host=..., port=...
     *                          -url=...
     *                       See Help (method printCmdLineUsage()).
     *                       Without the arguments a new connection to a
     *                       running office cannot created.
     *@exception  java.lang.Exception
     */
    public DataStreamRetriever( String args[] ) throws java.lang.Exception {

        // Parse arguments
        parseArguments( args );
        String connect = getConnect();
        String url     = getContentURL();

        // Init
        m_helper       = new Helper( connect, url );

        // Create UCB content
        m_content      = m_helper.createUCBContent();
    }

    /**
     *  Read the document data stream of a document content using a
     *  XActiveDataSink implementation as data sink....
     *
     *@return     XInputStream  Returns input stream if stream successfully retrieved,
     *                          null otherwise
     *@exception  com.sun.star.ucb.CommandAbortedException
     *@exception  com.sun.star.uno.Exception
     */
    public XInputStream getDataStream()
        throws com.sun.star.ucb.CommandAbortedException, com.sun.star.uno.Exception {

        XInputStream data = null;
        if ( m_content != null ) {

            // Fill argument structure...
            OpenCommandArgument2 arg = new OpenCommandArgument2();
            arg.Mode = OpenMode.DOCUMENT;
            arg.Priority = 32768; // Final static for 32768

            // Create data sink implementation object.
            XActiveDataSink dataSink = new MyActiveDataSink();
            arg.Sink = dataSink;

            // Execute command "open". The implementation of the command will
            // supply an XInputStream implementation to the data sink.
            m_helper.executeCommand( m_content, "open", arg );

            // Get input stream supplied by the open command implementation.
            data = dataSink.getInputStream();
        }
        return data;
    }

    /**
     *  Get connect URL.
     *
     *@return   String  That contains the connect URL
     */
    public String getContentURL() {
        return m_contenturl;
    }

    /**
     * Get source data connection.
     *
     *@return String  That contains the source data connection
     */
    public String getConnect() {
        return m_connectString;
    }

    /**
     * Parse arguments
     *
     *@param      String[]   Arguments
     *@exception  java.lang.Exception
     */
    public void parseArguments( String[] args ) throws java.lang.Exception {

        for ( int i = 0; i < args.length; i++ ) {
            if ( args[i].startsWith( "-connect=" )) {
                m_connectString = args[i].substring( 9 );
            } else if ( args[i].startsWith( "-url=" )) {
                m_contenturl    = args[i].substring( 5 );
            } else if ( args[i].startsWith( "-help" ) ||
                        args[i].startsWith( "-?" )) {
                printCmdLineUsage();
                System.exit( 0 );
            }
        }

        if ( m_connectString == null || m_connectString.equals( "" )) {
            m_connectString = "socket,host=localhost,port=8100";
        }

        if ( m_contenturl == null || m_contenturl.equals( "" )) {
            m_contenturl = Helper.getAbsoluteFileURL( "data/data.txt" );
        }
    }

    /**
     * Print the commands options
     */
    public void printCmdLineUsage() {
        System.out.println(
            "Usage   : DataStreamRetriever -connect=socket,host=...,port=... -url=..." );
        System.out.println(
            "Defaults: -connect=socket,host=localhost,port=8100 -url=<workdir>/data/data.txt" );
        System.out.println(
            "\nExample : -url=file:///temp/my.txt" );
    }

    /**
     *  Print Stream content.
     *
     *@param    XInputStream
     *@exception  com.sun.star.uno.Exception
     */
    public void printStream( XInputStream data )
        throws com.sun.star.uno.Exception {

        /////////////////////////////////////////////////////////////////////
        // Read data from input stream...65536
        /////////////////////////////////////////////////////////////////////

        // Data buffer. Will be allocated by input stream implementation!
        byte[][] buffer = new byte[ 1 ][ 65536 ];
        int read = data.readSomeBytes( buffer, 65536 );
        System.out.println( "Read bytes : " + read );
        System.out.println( "Read data (only first 64K displayed): ");
        while ( read > 0 ) {
            byte[] bytes =  new byte[ read ];
            for( int i = 0; i < read; i++ ) {
                bytes[ i ] = buffer[ 0 ][ i ];
            }
            System.out.println( new String(bytes) );

            // Process data contained in buffer.
            read = data.readSomeBytes( buffer, 65536 );
        }
    }

    /**
     *  Create a new connection with the specific args to a running office and
     *  access (Load) the content data stream of a UCB document content.
     *
     *@param  String[]   Arguments
     */
    public static void main ( String args[] ) {
        System.out.println( "\n" );
        System.out.println(
            "-----------------------------------------------------------------------" );
        System.out.println(
            "DataStreamRetriever - obtains the data stream from a document resource." );
        System.out.println(
            "-----------------------------------------------------------------------" );

        try {

            DataStreamRetriever access = new DataStreamRetriever( args );
            XInputStream data = access.getDataStream();
            String url = access.getContentURL();
            if ( data != null )  {
                String tempPrint = "\nGetting data stream for resource " + url +
                " succeeded.";
                int size = tempPrint.length();
                System.out.println( tempPrint );
                tempPrint = "";
                for( int i = 0; i < size; i++ ) {
                    tempPrint += "-";
                }
                System.out.println( tempPrint );
                access.printStream( data );
            } else {
                System.out.println(
                    "Getting data stream for resource " + url + " failed." );
            }
        } catch ( com.sun.star.io.NotConnectedException e ) {
            System.out.println( "Error: " + e );
        } catch ( com.sun.star.io.BufferSizeExceededException e ) {
            System.out.println( "Error: " + e );
        } catch ( com.sun.star.io.IOException e ) {
            System.out.println( "Error: " + e );
        } catch ( com.sun.star.ucb.CommandAbortedException e ) {
            System.out.println( "Error: " + e );
        } catch ( com.sun.star.uno.Exception e ) {
            System.out.println( "Error: " + e );
        } catch ( java.lang.Exception e ) {
            System.out.println( "Error: " + e );
        }
        System.exit( 0 );
    }
}