Java RandomAccessFileOrArray.close方法代码示例

import com.lowagie.text.pdf.RandomAccessFileOrArray; //导入方法依赖的package包/类
/**
 * Gets the content stream of a page.
 * @param pageNum	the page number of page you want get the content stream from
 * @return	a byte array with the content stream of a page
 * @throws IOException
 */
private byte[] getContentBytesForPage(int pageNum) throws IOException {
    RandomAccessFileOrArray f = reader.getSafeFile();
    byte[] contentBytes = reader.getPageContent(pageNum, f);
    f.close();
    return contentBytes;
}
 

import com.lowagie.text.pdf.RandomAccessFileOrArray; //导入方法依赖的package包/类
/**
 * Writes information about a specific page from PdfReader to the specified output stream.
 * @since 2.1.5
 * @param reader    the PdfReader to read the page content from
 * @param pageNum   the page number to read
 * @param out       the output stream to send the content to
 * @throws IOException
 */
static public void listContentStreamForPage(PdfReader reader, int pageNum, PrintWriter out) throws IOException {
    out.println("==============Page " + pageNum + "====================");
    out.println("- - - - - Dictionary - - - - - -");
    PdfDictionary pageDictionary = reader.getPageN(pageNum);
    out.println(getDictionaryDetail(pageDictionary));
    out.println("- - - - - Content Stream - - - - - -");
    RandomAccessFileOrArray f = reader.getSafeFile();
    
    byte[] contentBytes = reader.getPageContent(pageNum, f);
    f.close();

    
    InputStream is = new ByteArrayInputStream(contentBytes);
    int ch;
    while ((ch = is.read()) != -1){
        out.print((char)ch);
    }

    out.println("- - - - - Text Extraction - - - - - -");
    PdfTextExtractor extractor = new PdfTextExtractor(reader);
    String extractedText = extractor.getTextFromPage(pageNum);
    if (extractedText.length() != 0)
        out.println(extractedText);
    else
        out.println("No text found on page " + pageNum);
    
    out.println();
    
}
 

import com.lowagie.text.pdf.RandomAccessFileOrArray; //导入方法依赖的package包/类
/**
 * Combines 2 tiff-files into 1 PDF (similar to tiffmesh).
 * 
 * @param args
 *            [0] the file with the odd pages [1] the file with the even
 *            pages [2] the resulting file
 */
public void main(String... args) throws Exception {
	if (args.length < 3) {
		System.err.println("OddEven needs 3 Arguments.");
		System.out
				.println("Usage: com.lowagie.examples.objects.images.tiff.OddEven odd_file.tif even_file.tif combined_file.pdf");
		return;
	}
	RandomAccessFileOrArray odd = new RandomAccessFileOrArray(args[0]);
	RandomAccessFileOrArray even = new RandomAccessFileOrArray(args[1]);
	Image img = TiffImage.getTiffImage(odd, 1);
	Document document = new Document(new Rectangle(img.getScaledWidth(), img.getScaledHeight()));
	PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(args[2]));
	document.open();
	PdfContentByte cb = writer.getDirectContent();
	int count = Math.max(TiffImage.getNumberOfPages(odd), TiffImage.getNumberOfPages(even));
	for (int c = 0; c < count; ++c) {

		Image imgOdd = TiffImage.getTiffImage(odd, c + 1);
		Image imgEven = TiffImage.getTiffImage(even, count - c);
		document.setPageSize(new Rectangle(imgOdd.getScaledWidth(), imgOdd.getScaledHeight()));
		document.newPage();
		imgOdd.setAbsolutePosition(0, 0);
		cb.addImage(imgOdd);
		document.setPageSize(new Rectangle(imgEven.getScaledWidth(), imgEven.getScaledHeight()));
		document.newPage();
		imgEven.setAbsolutePosition(0, 0);
		cb.addImage(imgEven);

	}
	odd.close();
	even.close();
	document.close();

}
 

import com.lowagie.text.pdf.RandomAccessFileOrArray; //导入方法依赖的package包/类
/**
 * Writes information about a specific page from PdfReader to the specified
 * output stream.
 * 
 * @since 2.1.5
 * @param reader
 *            the PdfReader to read the page content from
 * @param pageNum
 *            the page number to read
 * @param out
 *            the output stream to send the content to
 * @throws IOException
 */
static public void listContentStreamForPage(PdfReader reader, int pageNum, PrintWriter out) throws IOException {
	out.println("==============Page " + pageNum + "====================");
	out.println("- - - - - Dictionary - - - - - -");
	PdfDictionary pageDictionary = reader.getPageN(pageNum);
	out.println(getDictionaryDetail(pageDictionary));
	out.println("- - - - - Content Stream - - - - - -");
	RandomAccessFileOrArray f = reader.getSafeFile();

	byte[] contentBytes = reader.getPageContent(pageNum, f);
	f.close();

	InputStream is = new ByteArrayInputStream(contentBytes);
	int ch;
	while ((ch = is.read()) != -1) {
		out.print((char) ch);
	}

	out.println("- - - - - Text Extraction - - - - - -");
	PdfTextExtractor extractor = new PdfTextExtractor(reader);
	String extractedText = extractor.getTextFromPage(pageNum);
	if (extractedText.length() != 0)
		out.println(extractedText);
	else
		out.println("No text found on page " + pageNum);

	out.println();

}
 

import com.lowagie.text.pdf.RandomAccessFileOrArray; //导入方法依赖的package包/类
/**
 * Reads the font data.
 * 
 * @param ttfAfm
 *            the font as a <CODE>byte</CODE> array, possibly <CODE>null</CODE>
 * @throws DocumentException
 *             the font is invalid
 * @throws IOException
 *             the font file could not be read
 */
void process( ) throws DocumentException, IOException
{
	positionTables = new HashMap<String, int[]>( );
	metadataTables = new HashMap<String, byte[]>( );

	try
	{
		rf = new RandomAccessFileOrArray( fileName );
		if ( ttcIndex.length( ) > 0 )
		{
			int dirIdx = Integer.parseInt( ttcIndex );
			if ( dirIdx < 0 )
				throw new DocumentException( "The font index for "
						+ fileName + " must be positive." );
			String mainTag = readStandardString( 4 );
			if ( !mainTag.equals( "ttcf" ) )
				throw new DocumentException( fileName
						+ " is not a valid TTC file." );
			rf.skipBytes( 4 );
			int dirCount = rf.readInt( );
			if ( dirIdx >= dirCount )
				throw new DocumentException( "The font index for "
						+ fileName + " must be between 0 and "
						+ ( dirCount - 1 ) + ". It was " + dirIdx + "." );
			rf.skipBytes( dirIdx * 4 );
			directoryOffset = rf.readInt( );
		}
		rf.seek( directoryOffset );
		rf.readFully( directoryRawData );
		int ttId = Util.getInt( directoryRawData, 0 );
		if ( ttId != 0x00010000 && ttId != 0x4F54544F )
			throw new DocumentException( fileName
					+ " is not a valid TTF or OTF file." );
		int num_tables = Util.getUnsignedShort( directoryRawData, 4 );
		for ( int k = 0; k < num_tables; ++k )
		{
			byte[] rawData = new byte[16];
			rf.readFully( rawData );
			String tag = getStandardString( rawData, 0, 4 );
			int table_location[] = new int[2];
			table_location[0] = Util.getInt( rawData, 8 );
			table_location[1] = Util.getInt( rawData, 12 );
			positionTables.put( tag, table_location );
			metadataTables.put( tag, rawData );
		}
		fontName = getBaseFont( );
		fullName = getNames( 4 ); // full name
		familyName = getNames( 1 ); // family name
		notice = getNames( 0 );
		version = getNames( 5 );

		if ( !justNames )
		{
			fillTables( );
			readGlyphWidths( );
			readCMaps( );
			readKerning( );
			readBbox( );
			GlyphWidths = null;
		}
	}
	finally
	{
		if ( rf != null )
		{
			rf.close( );
			if ( !embedded )
				rf = null;
		}
	}
}