javadoc fixes

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1832978 13f79535-47bb-0310-9956-ffa450edef68

src/scratchpad/src/org/apache/poi/extractor/ole2/OLE2ScratchpadExtractorFactory.java

@@ -55,6 +55,11 @@ public class OLE2ScratchpadExtractorFactory {
      * out what format is desired
      * Note - doesn't check for core-supported formats!
      * Note - doesn't check for OOXML-supported formats
+     *
+     * @param poifsDir the directory node to be inspected
+     * @return the format specific text extractor
+     *
+     * @throws IOException when the format specific extraction fails because of invalid entires
      */
     public static POITextExtractor createExtractor(DirectoryNode poifsDir) throws IOException {
         if (poifsDir.hasEntry("WordDocument")) {
@@ -106,6 +111,12 @@ public class OLE2ScratchpadExtractorFactory {
      * If there are no embedded documents, you'll get back an
      *  empty array. Otherwise, you'll get one open
      *  {@link POITextExtractor} for each embedded file.
+     *
+     * @param ext the extractor holding the directory to start parsing
+     * @param dirs a list to be filled with directory references holding embedded
+     * @param nonPOIFS a list to be filled with streams which aren't based on POIFS entries
+     *
+     * @throws IOException when the format specific extraction fails because of invalid entires
      */
     public static void identifyEmbeddedResources(POIOLE2TextExtractor ext, List<Entry> dirs, List<InputStream> nonPOIFS) throws IOException {
         // Find all the embedded directories

src/scratchpad/src/org/apache/poi/hdgf/HDGFDiagram.java

@@ -101,13 +101,19 @@ public final class HDGFDiagram extends POIReadOnlyDocument {
 	/**
 	 * Returns the TrailerStream, which is at the root of the
 	 *  tree of Streams.
+	 *
+	 * @return the TrailerStream
 	 */
 	public TrailerStream getTrailerStream() { return trailer; }
+
 	/**
 	 * Returns all the top level streams, which are the streams
 	 *  pointed to by the TrailerStream.
+	 *
+	 * @return the top level streams
 	 */
 	public Stream[] getTopLevelStreams() { return trailer.getPointedToStreams(); }
+
 	public long getDocumentSize() { return docSize; }
 
 	/**
@@ -154,15 +160,4 @@ public final class HDGFDiagram extends POIReadOnlyDocument {
 			}
 		}
 	}
-
-	/**
-	 * For testing only
-	 */
-	public static void main(String args[]) throws Exception {
-		NPOIFSFileSystem pfs = new NPOIFSFileSystem(new File(args[0]));
-		HDGFDiagram hdgf = new HDGFDiagram(pfs);
-		hdgf.debug();
-		hdgf.close();
-		pfs.close();
-	}
 }

src/scratchpad/src/org/apache/poi/hdgf/HDGFLZW.java

@@ -46,6 +46,11 @@ public class HDGFLZW extends LZWDecompresser {
    /**
     * Compress the given input stream, returning the array of bytes
     *  of the compressed input
+    *
+    * @param src the compression source byte
+    * @return the compressed stream as bytes
+    *
+    * @throws IOException when the InputStream can't be read
     */
    public byte[] compress(InputStream src) throws IOException {
       ByteArrayOutputStream res = new ByteArrayOutputStream();
@@ -76,6 +81,12 @@ public class HDGFLZW extends LZWDecompresser {
 
    /**
     * Performs the Visio compatible streaming LZW compression.
+    *
+    * @param src the input bytes for the compression
+    * @param res the OutputStream which receives the compressed bytes
+    *
+    * @throws IOException when the InputStream can't be read
+    *    or the OutputStream can't be written to
     */
    public void compress(InputStream src, OutputStream res) throws IOException {
       HDGFLZWCompressor c = new HDGFLZWCompressor();

src/scratchpad/src/org/apache/poi/hdgf/chunks/Chunk.java

@@ -60,29 +60,47 @@ public final class Chunk {
 	public byte[] _getContents() {
 		return contents;
 	}
+
 	public ChunkHeader getHeader() {
 		return header;
 	}
-	/** Gets the separator between this chunk and the next, if it exists */
+
+	/**
+	 * Gets the separator between this chunk and the next, if it exists
+	 *
+	 * @return the separator
+	 */
 	public ChunkSeparator getSeparator() {
 		return separator;
 	}
-	/** Gets the trailer for this chunk, if it exists */
+
+	/**
+	 * Gets the trailer for this chunk, if it exists
+	 *
+	 * @return the trailer
+	 */
 	public ChunkTrailer getTrailer() {
 		return trailer;
 	}
+
 	/**
 	 * Gets the command definitions, which define and describe much
 	 *  of the data held by the chunk.
+	 *
+	 * @return the command definitions
 	 */
 	public CommandDefinition[] getCommandDefinitions() {
 		return commandDefinitions;
 	}
+
 	public Command[] getCommands() {
 		return commands;
 	}
+
 	/**
 	 * Get the name of the chunk, as found from the CommandDefinitions
+	 *
+	 * @return the name of the chunk
 	 */
 	public String getName() {
 		return name;
@@ -91,6 +109,8 @@ public final class Chunk {
 	/**
 	 * Returns the size of the chunk, including any
 	 *  headers, trailers and separators.
+	 *
+	 * @return the size of the chunk
 	 */
 	public int getOnDiskSize() {
 		int size = header.getSizeInBytes() + contents.length;

src/scratchpad/src/org/apache/poi/hdgf/chunks/ChunkFactory.java

@@ -128,8 +128,11 @@ public final class ChunkFactory {
 
 	/**
 	 * Creates the appropriate chunk at the given location.
-	 * @param data
-	 * @param offset
+	 *
+	 * @param data the chunk bytes
+	 * @param offset the offset into the chunk bytes array to start reading from
+	 *
+	 * @return the new Chunk
 	 */
 	public Chunk createChunk(byte[] data, int offset) {
 		// Create the header

src/scratchpad/src/org/apache/poi/hdgf/chunks/ChunkHeader.java

@@ -33,6 +33,11 @@ public abstract class ChunkHeader {
 	/**
 	 * Creates the appropriate ChunkHeader for the Chunk Header at
 	 *  the given location, for the given document version.
+	 *
+	 * @param documentVersion the documentVersion - 4 and higher is supported
+	 * @param data the chunk data
+	 * @param offset the start offset in the chunk data
+	 * @return the ChunkHeader
 	 */
 	public static ChunkHeader createChunkHeader(int documentVersion, byte[] data, int offset) {
 		if(documentVersion >= 6) {
@@ -68,6 +73,10 @@ public abstract class ChunkHeader {
 
 	/**
 	 * Returns the size of a chunk header for the given document version.
+	 *
+	 * @param documentVersion the documentVersion - 4 and higher is supported
+	 *
+	 * @return the header size
 	 */
 	public static int getHeaderSize(int documentVersion) {
 		if(documentVersion > 6) {
@@ -85,7 +94,7 @@ public abstract class ChunkHeader {
 	public abstract Charset getChunkCharset();
 
 	/**
-	 * Returns the ID/IX of the chunk
+	 * @return the ID/IX of the chunk
 	 */
 	public int getId() {
 		return id;
@@ -94,6 +103,8 @@ public abstract class ChunkHeader {
 	/**
 	 * Returns the length of the trunk, excluding the length
 	 *  of the header, trailer or separator.
+	 *
+	 * @return the length of the trunk
 	 */
 	public int getLength() {
 		return length;
@@ -102,6 +113,8 @@ public abstract class ChunkHeader {
 	/**
 	 * Returns the type of the chunk, which affects the
 	 *  mandatory information
+	 *
+	 * @return the type of the chunk
 	 */
 	public int getType() {
 		return type;