iText 5 itextpdf.jar Source Code
itextpdf.jar is a component in iText 5 Java library to provide core functionalities.
iText Java library allows you to generate and manage PDF documents.
The Source Code files are provided at iText GitHub site.
You can compile it to generate your JAR file, using pom.xml as the build configuration file.
The source code of itextpdf-5.5.14.jar is provided below:
✍: FYIcenter.com
⏎ com/itextpdf/text/pdf/codec/TIFFDirectory.java
/*
* Copyright 2003-2012 by Paulo Soares.
*
* This code was originally released in 2001 by SUN (see class
* com.sun.media.imageio.plugins.tiff.TIFFDirectory.java)
* using the BSD license in a specific wording. In a mail dating from
* January 23, 2008, Brian Burkhalter (@sun.com) gave us permission
* to use the code under the following version of the BSD license:
*
* Copyright (c) 2006 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:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution 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.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
* EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
* NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
* USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
* ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
* CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
* REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
* INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for
* use in the design, construction, operation or maintenance of any
* nuclear facility.
*/
package com.itextpdf.text.pdf.codec;
import java.io.EOFException;
import java.io.IOException;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Hashtable;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.pdf.RandomAccessFileOrArray;
/**
* A class representing an Image File Directory (IFD) from a TIFF 6.0
* stream. The TIFF file format is described in more detail in the
* comments for the TIFFDescriptor class.
*
* <p> A TIFF IFD consists of a set of TIFFField tags. Methods are
* provided to query the set of tags and to obtain the raw field
* array. In addition, convenience methods are provided for acquiring
* the values of tags that contain a single value that fits into a
* byte, int, long, float, or double.
*
* <p> Every TIFF file is made up of one or more public IFDs that are
* joined in a linked list, rooted in the file header. A file may
* also contain so-called private IFDs that are referenced from
* tag data and do not appear in the main list.
*
* <p><b> This class is not a committed part of the JAI API. It may
* be removed or changed in future releases of JAI.</b>
*
* @see TIFFField
*/
public class TIFFDirectory extends Object implements Serializable {
private static final long serialVersionUID = -168636766193675380L;
/** A boolean storing the endianness of the stream. */
boolean isBigEndian;
/** The number of entries in the IFD. */
int numEntries;
/** An array of TIFFFields. */
TIFFField[] fields;
/** A Hashtable indexing the fields by tag number. */
Hashtable<Integer, Integer> fieldIndex = new Hashtable<Integer, Integer>();
/** The offset of this IFD. */
long IFDOffset = 8;
/** The offset of the next IFD. */
long nextIFDOffset = 0;
/** The default constructor. */
TIFFDirectory() {}
private static boolean isValidEndianTag(int endian) {
return endian == 0x4949 || endian == 0x4d4d;
}
/**
* Constructs a TIFFDirectory from a SeekableStream.
* The directory parameter specifies which directory to read from
* the linked list present in the stream; directory 0 is normally
* read but it is possible to store multiple images in a single
* TIFF file by maintaining multiple directories.
*
* @param stream a SeekableStream to read from.
* @param directory the index of the directory to read.
*/
public TIFFDirectory(RandomAccessFileOrArray stream, int directory)
throws IOException {
long global_save_offset = stream.getFilePointer();
long ifd_offset;
// Read the TIFF header
stream.seek(0L);
int endian = stream.readUnsignedShort();
if (!isValidEndianTag(endian)) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("bad.endianness.tag.not.0x4949.or.0x4d4d"));
}
isBigEndian = endian == 0x4d4d;
int magic = readUnsignedShort(stream);
if (magic != 42) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("bad.magic.number.should.be.42"));
}
// Get the initial ifd offset as an unsigned int (using a long)
ifd_offset = readUnsignedInt(stream);
for (int i = 0; i < directory; i++) {
if (ifd_offset == 0L) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("directory.number.too.large"));
}
stream.seek(ifd_offset);
int entries = readUnsignedShort(stream);
stream.skip(12*entries);
ifd_offset = readUnsignedInt(stream);
}
stream.seek(ifd_offset);
initialize(stream);
stream.seek(global_save_offset);
}
/**
* Constructs a TIFFDirectory by reading a SeekableStream.
* The ifd_offset parameter specifies the stream offset from which
* to begin reading; this mechanism is sometimes used to store
* private IFDs within a TIFF file that are not part of the normal
* sequence of IFDs.
*
* @param stream a SeekableStream to read from.
* @param ifd_offset the long byte offset of the directory.
* @param directory the index of the directory to read beyond the
* one at the current stream offset; zero indicates the IFD
* at the current offset.
*/
public TIFFDirectory(RandomAccessFileOrArray stream, long ifd_offset, int directory)
throws IOException {
long global_save_offset = stream.getFilePointer();
stream.seek(0L);
int endian = stream.readUnsignedShort();
if (!isValidEndianTag(endian)) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("bad.endianness.tag.not.0x4949.or.0x4d4d"));
}
isBigEndian = endian == 0x4d4d;
// Seek to the first IFD.
stream.seek(ifd_offset);
// Seek to desired IFD if necessary.
int dirNum = 0;
while(dirNum < directory) {
// Get the number of fields in the current IFD.
int numEntries = readUnsignedShort(stream);
// Skip to the next IFD offset value field.
stream.seek(ifd_offset + 12*numEntries);
// Read the offset to the next IFD beyond this one.
ifd_offset = readUnsignedInt(stream);
// Seek to the next IFD.
stream.seek(ifd_offset);
// Increment the directory.
dirNum++;
}
initialize(stream);
stream.seek(global_save_offset);
}
private static final int[] sizeOfType = {
0, // 0 = n/a
1, // 1 = byte
1, // 2 = ascii
2, // 3 = short
4, // 4 = long
8, // 5 = rational
1, // 6 = sbyte
1, // 7 = undefined
2, // 8 = sshort
4, // 9 = slong
8, // 10 = srational
4, // 11 = float
8 // 12 = double
};
private void initialize(RandomAccessFileOrArray stream) throws IOException {
long nextTagOffset = 0L;
long maxOffset = stream.length();
int i, j;
IFDOffset = stream.getFilePointer();
numEntries = readUnsignedShort(stream);
fields = new TIFFField[numEntries];
for (i = 0; i < numEntries && nextTagOffset < maxOffset; i++) {
int tag = readUnsignedShort(stream);
int type = readUnsignedShort(stream);
int count = (int)readUnsignedInt(stream);
boolean processTag = true;
// The place to return to to read the next tag
nextTagOffset = stream.getFilePointer() + 4;
try {
// If the tag data can't fit in 4 bytes, the next 4 bytes
// contain the starting offset of the data
if (count*sizeOfType[type] > 4) {
long valueOffset = readUnsignedInt(stream);
// bounds check offset for EOF
if (valueOffset < maxOffset) {
stream.seek(valueOffset);
}
else {
// bad offset pointer .. skip tag
processTag = false;
}
}
} catch (ArrayIndexOutOfBoundsException ae) {
// if the data type is unknown we should skip this TIFF Field
processTag = false;
}
if (processTag) {
fieldIndex.put(Integer.valueOf(tag), Integer.valueOf(i));
Object obj = null;
switch (type) {
case TIFFField.TIFF_BYTE:
case TIFFField.TIFF_SBYTE:
case TIFFField.TIFF_UNDEFINED:
case TIFFField.TIFF_ASCII:
byte[] bvalues = new byte[count];
stream.readFully(bvalues, 0, count);
if (type == TIFFField.TIFF_ASCII) {
// Can be multiple strings
int index = 0, prevIndex = 0;
ArrayList<String> v = new ArrayList<String>();
while (index < count) {
while (index < count && bvalues[index++] != 0);
// When we encountered zero, means one string has ended
v.add(new String(bvalues, prevIndex,
(index - prevIndex)) );
prevIndex = index;
}
count = v.size();
String strings[] = new String[count];
for (int c = 0 ; c < count; c++) {
strings[c] = v.get(c);
}
obj = strings;
} else {
obj = bvalues;
}
break;
case TIFFField.TIFF_SHORT:
char[] cvalues = new char[count];
for (j = 0; j < count; j++) {
cvalues[j] = (char)readUnsignedShort(stream);
}
obj = cvalues;
break;
case TIFFField.TIFF_LONG:
long[] lvalues = new long[count];
for (j = 0; j < count; j++) {
lvalues[j] = readUnsignedInt(stream);
}
obj = lvalues;
break;
case TIFFField.TIFF_RATIONAL:
long[][] llvalues = new long[count][2];
for (j = 0; j < count; j++) {
llvalues[j][0] = readUnsignedInt(stream);
llvalues[j][1] = readUnsignedInt(stream);
}
obj = llvalues;
break;
case TIFFField.TIFF_SSHORT:
short[] svalues = new short[count];
for (j = 0; j < count; j++) {
svalues[j] = readShort(stream);
}
obj = svalues;
break;
case TIFFField.TIFF_SLONG:
int[] ivalues = new int[count];
for (j = 0; j < count; j++) {
ivalues[j] = readInt(stream);
}
obj = ivalues;
break;
case TIFFField.TIFF_SRATIONAL:
int[][] iivalues = new int[count][2];
for (j = 0; j < count; j++) {
iivalues[j][0] = readInt(stream);
iivalues[j][1] = readInt(stream);
}
obj = iivalues;
break;
case TIFFField.TIFF_FLOAT:
float[] fvalues = new float[count];
for (j = 0; j < count; j++) {
fvalues[j] = readFloat(stream);
}
obj = fvalues;
break;
case TIFFField.TIFF_DOUBLE:
double[] dvalues = new double[count];
for (j = 0; j < count; j++) {
dvalues[j] = readDouble(stream);
}
obj = dvalues;
break;
default:
break;
}
fields[i] = new TIFFField(tag, type, count, obj);
}
stream.seek(nextTagOffset);
}
// Read the offset of the next IFD.
try {
nextIFDOffset = readUnsignedInt(stream);
}
catch (Exception e) {
// broken tiffs may not have this pointer
nextIFDOffset = 0;
}
}
/** Returns the number of directory entries. */
public int getNumEntries() {
return numEntries;
}
/**
* Returns the value of a given tag as a TIFFField,
* or null if the tag is not present.
*/
public TIFFField getField(int tag) {
Integer i = fieldIndex.get(Integer.valueOf(tag));
if (i == null) {
return null;
} else {
return fields[i.intValue()];
}
}
/**
* Returns true if a tag appears in the directory.
*/
public boolean isTagPresent(int tag) {
return fieldIndex.containsKey(Integer.valueOf(tag));
}
/**
* Returns an ordered array of ints indicating the tag
* values.
*/
public int[] getTags() {
int[] tags = new int[fieldIndex.size()];
Enumeration<Integer> e = fieldIndex.keys();
int i = 0;
while (e.hasMoreElements()) {
tags[i++] = e.nextElement().intValue();
}
return tags;
}
/**
* Returns an array of TIFFFields containing all the fields
* in this directory.
*/
public TIFFField[] getFields() {
return fields;
}
/**
* Returns the value of a particular index of a given tag as a
* byte. The caller is responsible for ensuring that the tag is
* present and has type TIFFField.TIFF_SBYTE, TIFF_BYTE, or
* TIFF_UNDEFINED.
*/
public byte getFieldAsByte(int tag, int index) {
Integer i = fieldIndex.get(Integer.valueOf(tag));
byte [] b = fields[i.intValue()].getAsBytes();
return b[index];
}
/**
* Returns the value of index 0 of a given tag as a
* byte. The caller is responsible for ensuring that the tag is
* present and has type TIFFField.TIFF_SBYTE, TIFF_BYTE, or
* TIFF_UNDEFINED.
*/
public byte getFieldAsByte(int tag) {
return getFieldAsByte(tag, 0);
}
/**
* Returns the value of a particular index of a given tag as a
* long. The caller is responsible for ensuring that the tag is
* present and has type TIFF_BYTE, TIFF_SBYTE, TIFF_UNDEFINED,
* TIFF_SHORT, TIFF_SSHORT, TIFF_SLONG or TIFF_LONG.
*/
public long getFieldAsLong(int tag, int index) {
Integer i = fieldIndex.get(Integer.valueOf(tag));
return fields[i.intValue()].getAsLong(index);
}
/**
* Returns the value of index 0 of a given tag as a
* long. The caller is responsible for ensuring that the tag is
* present and has type TIFF_BYTE, TIFF_SBYTE, TIFF_UNDEFINED,
* TIFF_SHORT, TIFF_SSHORT, TIFF_SLONG or TIFF_LONG.
*/
public long getFieldAsLong(int tag) {
return getFieldAsLong(tag, 0);
}
/**
* Returns the value of a particular index of a given tag as a
* float. The caller is responsible for ensuring that the tag is
* present and has numeric type (all but TIFF_UNDEFINED and
* TIFF_ASCII).
*/
public float getFieldAsFloat(int tag, int index) {
Integer i = fieldIndex.get(Integer.valueOf(tag));
return fields[i.intValue()].getAsFloat(index);
}
/**
* Returns the value of index 0 of a given tag as a float. The
* caller is responsible for ensuring that the tag is present and
* has numeric type (all but TIFF_UNDEFINED and TIFF_ASCII).
*/
public float getFieldAsFloat(int tag) {
return getFieldAsFloat(tag, 0);
}
/**
* Returns the value of a particular index of a given tag as a
* double. The caller is responsible for ensuring that the tag is
* present and has numeric type (all but TIFF_UNDEFINED and
* TIFF_ASCII).
*/
public double getFieldAsDouble(int tag, int index) {
Integer i = fieldIndex.get(Integer.valueOf(tag));
return fields[i.intValue()].getAsDouble(index);
}
/**
* Returns the value of index 0 of a given tag as a double. The
* caller is responsible for ensuring that the tag is present and
* has numeric type (all but TIFF_UNDEFINED and TIFF_ASCII).
*/
public double getFieldAsDouble(int tag) {
return getFieldAsDouble(tag, 0);
}
// Methods to read primitive data types from the stream
private short readShort(RandomAccessFileOrArray stream)
throws IOException {
if (isBigEndian) {
return stream.readShort();
} else {
return stream.readShortLE();
}
}
private int readUnsignedShort(RandomAccessFileOrArray stream)
throws IOException {
if (isBigEndian) {
return stream.readUnsignedShort();
} else {
return stream.readUnsignedShortLE();
}
}
private int readInt(RandomAccessFileOrArray stream)
throws IOException {
if (isBigEndian) {
return stream.readInt();
} else {
return stream.readIntLE();
}
}
private long readUnsignedInt(RandomAccessFileOrArray stream)
throws IOException {
if (isBigEndian) {
return stream.readUnsignedInt();
} else {
return stream.readUnsignedIntLE();
}
}
private long readLong(RandomAccessFileOrArray stream)
throws IOException {
if (isBigEndian) {
return stream.readLong();
} else {
return stream.readLongLE();
}
}
private float readFloat(RandomAccessFileOrArray stream)
throws IOException {
if (isBigEndian) {
return stream.readFloat();
} else {
return stream.readFloatLE();
}
}
private double readDouble(RandomAccessFileOrArray stream)
throws IOException {
if (isBigEndian) {
return stream.readDouble();
} else {
return stream.readDoubleLE();
}
}
private static int readUnsignedShort(RandomAccessFileOrArray stream,
boolean isBigEndian)
throws IOException {
if (isBigEndian) {
return stream.readUnsignedShort();
} else {
return stream.readUnsignedShortLE();
}
}
private static long readUnsignedInt(RandomAccessFileOrArray stream,
boolean isBigEndian)
throws IOException {
if (isBigEndian) {
return stream.readUnsignedInt();
} else {
return stream.readUnsignedIntLE();
}
}
// Utilities
/**
* Returns the number of image directories (subimages) stored in a
* given TIFF file, represented by a <code>SeekableStream</code>.
*/
public static int getNumDirectories(RandomAccessFileOrArray stream)
throws IOException{
long pointer = stream.getFilePointer(); // Save stream pointer
stream.seek(0L);
int endian = stream.readUnsignedShort();
if (!isValidEndianTag(endian)) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("bad.endianness.tag.not.0x4949.or.0x4d4d"));
}
boolean isBigEndian = endian == 0x4d4d;
int magic = readUnsignedShort(stream, isBigEndian);
if (magic != 42) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("bad.magic.number.should.be.42"));
}
stream.seek(4L);
long offset = readUnsignedInt(stream, isBigEndian);
int numDirectories = 0;
while (offset != 0L) {
++numDirectories;
// EOFException means IFD was probably not properly terminated.
try {
stream.seek(offset);
int entries = readUnsignedShort(stream, isBigEndian);
stream.skip(12*entries);
offset = readUnsignedInt(stream, isBigEndian);
} catch(EOFException eof) {
numDirectories--;
break;
}
}
stream.seek(pointer); // Reset stream pointer
return numDirectories;
}
/**
* Returns a boolean indicating whether the byte order used in the
* the TIFF file is big-endian (i.e. whether the byte order is from
* the most significant to the least significant)
*/
public boolean isBigEndian() {
return isBigEndian;
}
/**
* Returns the offset of the IFD corresponding to this
* <code>TIFFDirectory</code>.
*/
public long getIFDOffset() {
return IFDOffset;
}
/**
* Returns the offset of the next IFD after the IFD corresponding to this
* <code>TIFFDirectory</code>.
*/
public long getNextIFDOffset() {
return nextIFDOffset;
}
}
⏎ com/itextpdf/text/pdf/codec/TIFFDirectory.java
Or download all of them as a single archive file:
File name: itextpdf-5.5.14-fyi.zip File size: 2163839 bytes Release date: 2009-10-09 Download
⇒ iText-2.1.6.jar - iText, a JAVA-PDF library
⇐ iText layout.jar Source Code
2021-07-03, 111393👍, 0💬
