INTEGRATION: CWS sdk02 (1.1.2); FILE ADDED

2003/05/09 11:36:43 jsc 1.1.2.1: #109045# insert new and remove example zip file

1 files changed, 159 insertions, 0 deletions

diff --git a/odk/examples/DevelopersGuide/UCB/MyInputStream.java b/odk/examples/DevelopersGuide/UCB/MyInputStream.java
new file mode 100644
index 000000000000..e3b97fbe5010
--- /dev/null
+++ b/odk/examples/DevelopersGuide/UCB/MyInputStream.java
@@ -0,0 +1,159 @@
+// base classes
+import com.sun.star.io.*;
+
+/**
+ * XInputStream interface implementation.
+ */
+public class MyInputStream implements XSeekable, XInputStream {
+
+    /**
+     * Member properties
+     */
+    private int offset = 0;
+    private int read = offset;
+    private byte[] bigbuffer;
+
+    /**
+     * Constructor
+     */
+    public MyInputStream() {
+    }
+
+        // XSeekable. Makes it possible to seek to a certain position within a stream.
+
+    /**
+     *   Returns the length of the stream.
+     *
+     *@return  long  The length of the storage medium on which the stream works.
+     */
+    public synchronized long getLength()
+        throws com.sun.star.io.IOException,com.sun.star.uno.RuntimeException {
+        if ( bigbuffer != null ) {
+            return bigbuffer.length - offset;
+        } else {
+            return 0;
+        }
+    }
+
+    /**
+     *   Returns the current offset of the stream.
+     *
+     *@return  long  The current offset in this stream.
+     */
+    public synchronized long getPosition()
+        throws com.sun.star.io.IOException,com.sun.star.uno.RuntimeException {
+        return read - offset ;
+    }
+
+    /**
+     *  Changes the seek pointer to a new location relative to the beginning of the stream.
+     *
+     *@param  long
+     */
+    public synchronized void seek(long p0)
+        throws IllegalArgumentException, com.sun.star.io.IOException,
+            com.sun.star.uno.RuntimeException {
+        if( bigbuffer != null ) {
+            p0 +=offset;
+            int curr = ( int ) p0;
+            if( curr < offset ) {
+                throw new IllegalArgumentException();
+            } else if( curr > bigbuffer.length ) {
+                curr = bigbuffer.length;
+                read = curr;
+            } else {
+                read = 0;
+            }
+        }
+    }
+
+        // XInputStream. This is the basic interface to read data from a stream.
+
+    /**
+     *   States how many bytes can be read or skipped without blocking.
+     *
+     *@return  int  If not available, then returned 0
+     */
+    public synchronized int available()
+        throws NotConnectedException, com.sun.star.io.IOException,
+            com.sun.star.uno.RuntimeException {
+        if( bigbuffer != null )
+            return ( bigbuffer.length - read );
+        else
+            return 0;
+    }
+
+    /**
+     *   Closes the stream. .
+     */
+    public void closeInput()
+        throws NotConnectedException,com.sun.star.io.IOException,
+        com.sun.star.uno.RuntimeException {
+        read = -1;
+    }
+
+    /**
+     *   Reads the specified number of bytes in the given sequence.
+     *
+     *@param    byte[][]
+     *@param    int
+     *@return   int
+     */
+    public synchronized int readBytes(byte[][] p0, int p1)
+        throws NotConnectedException, BufferSizeExceededException,
+            com.sun.star.io.IOException, com.sun.star.uno.RuntimeException {
+        if( bigbuffer != null ) {
+            if( read == -1 )
+                  return 0;
+            int i = 0;
+            int available;
+            if ( p1 > bigbuffer.length - read )
+                available = bigbuffer.length - read;
+            else
+                available = p1;
+
+            p0[0] = new byte[p1];
+            while( available != 0 ) {
+                p0[0][i++] = bigbuffer[read++];
+                --available;
+            }
+            return i;
+        } else {
+            p0[0] = new byte[0];
+            return 0;
+        }
+    }
+
+    /**
+     *  Reads the available number of bytes at maximum  nMaxBytesToRead .
+     *  This method blocks the thread until at least one byte is available.
+     *
+     *@param    byte[][]
+     *@param    int
+     *@return   int
+     */
+    public synchronized int readSomeBytes(byte[][] p0, int p1)
+            throws  NotConnectedException,
+                    BufferSizeExceededException,
+                    com.sun.star.io.IOException,
+                    com.sun.star.uno.RuntimeException {
+            return readBytes( p0,p1 );
+    }
+
+    /**
+     *  Skips the next nBytesToSkip bytes (must be positive).
+     *  It is up to the implementation whether this method is blocking the thread or not.
+     *
+     *@param    int
+     */
+    public synchronized void skipBytes(int p0)
+        throws  NotConnectedException, BufferSizeExceededException,
+            com.sun.star.io.IOException, com.sun.star.uno.RuntimeException {
+        read += p0;
+        if( read > bigbuffer.length )
+            read = bigbuffer.length;
+
+        if( read < offset )
+            read = offset;
+    }
+}
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