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/*************************************************************************
*
* $RCSfile: DataStreamRetriever.java,v $
*
* $Revision: 1.5 $
*
* last change: $Author: rt $ $Date: 2005-01-31 16:57:38 $
*
* The Contents of this file are made available subject to the terms of
* the BSD license.
*
* Copyright (c) 2003 by Sun Microsystems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*************************************************************************/
import com.sun.star.ucb.OpenCommandArgument2;
import com.sun.star.ucb.OpenMode;
import com.sun.star.ucb.XContent;
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_contenturl = "";
/**
* Constructor.
*
*@param String[] This construtor requires the arguments:
* -url=... (optional)
* 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 );
// Init
m_helper = new Helper( getContentURL() );
// 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;
}
/**
* 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( "-url=" )) {
m_contenturl = args[i].substring( 5 );
} else if ( args[i].startsWith( "-help" ) ||
args[i].startsWith( "-?" )) {
printCmdLineUsage();
System.exit( 0 );
}
}
if ( m_contenturl == null || m_contenturl.equals( "" )) {
m_contenturl = Helper.prependCurrentDirAsAbsoluteFileURL( "data/data.txt" );
}
}
/**
* Print the commands options
*/
public void printCmdLineUsage() {
System.out.println(
"Usage : DataStreamRetriever -url=..." );
System.out.println(
"Defaults: -url=<currentdir>/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 );
}
}
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