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iText kernel.jar Source Code
kernel.jar is a component in iText Java library to provide low-level functionalities. iText Java library allows you to generate and manage PDF documents.
The Source Code files are provided together with the JAR file in the binary packge like iText7-Core-7.1.4.zip. You can download it at iText 7 Core Download site.
You can compile it to generate your JAR file, using kernel.pom as the build configuration file.
The source code of kernel-7.1.4.jar is provided below:
✍: FYIcenter.com
⏎ com/itextpdf/kernel/xmp/impl/FixASCIIControlsReader.java
//Copyright (c) 2006, Adobe Systems Incorporated //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. All advertising materials mentioning features or use of this software // must display the following acknowledgement: // This product includes software developed by the Adobe Systems Incorporated. // 4. Neither the name of the Adobe Systems Incorporated 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 ADOBE SYSTEMS INCORPORATED ''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 ADOBE SYSTEMS INCORPORATED 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. // // http://www.adobe.com/devnet/xmp/library/eula-xmp-library-java.html package com.itextpdf.kernel.xmp.impl; import java.io.IOException; import java.io.PushbackReader; import java.io.Reader; /** * @since 22.08.2006 */ public class FixASCIIControlsReader extends PushbackReader { /** */ private static final int STATE_START = 0; /** */ private static final int STATE_AMP = 1; /** */ private static final int STATE_HASH = 2; /** */ private static final int STATE_HEX = 3; /** */ private static final int STATE_DIG1 = 4; /** */ private static final int STATE_ERROR = 5; /** */ private static final int BUFFER_SIZE = 8; /** the state of the automaton */ private int state = STATE_START; /** the result of the escaping sequence */ private int control = 0; /** count the digits of the sequence */ private int digits = 0; /** * The look-ahead size is 6 at maximum (&#xAB;) * @see java.io.PushbackReader#PushbackReader(java.io.Reader, int) * @param input a Reader */ public FixASCIIControlsReader(Reader input) { super(input, BUFFER_SIZE); } /** * @see java.io.Reader#read(char[], int, int) */ public int read(char[] cbuf, int off, int len) throws IOException { int readAhead = 0; int read = 0; int pos = off; char[] readAheadBuffer = new char[BUFFER_SIZE]; boolean available = true; while (available && read < len) { available = super.read(readAheadBuffer, readAhead, 1) == 1; if (available) { char c = processChar(readAheadBuffer[readAhead]); if (state == STATE_START) { // replace control chars with space if (Utils.isControlChar(c)) { c = ' '; } cbuf[pos++] = c; readAhead = 0; read++; } else if (state == STATE_ERROR) { unread(readAheadBuffer, 0, readAhead + 1); readAhead = 0; } else { readAhead++; } } else if (readAhead > 0) { // handles case when file ends within excaped sequence unread(readAheadBuffer, 0, readAhead); state = STATE_ERROR; readAhead = 0; available = true; } } return read > 0 || available ? read : -1; } /** * Processes numeric escaped chars to find out if they are a control character. * @param ch a char * @return Returns the char directly or as replacement for the escaped sequence. */ private char processChar(char ch) { switch (state) { case STATE_START: if (ch == '&') { state = STATE_AMP; } return ch; case STATE_AMP: if (ch == '#') { state = STATE_HASH; } else { state = STATE_ERROR; } return ch; case STATE_HASH: if (ch == 'x') { control = 0; digits = 0; state = STATE_HEX; } else if ('0' <= ch && ch <= '9') { control = Character.digit(ch, 10); digits = 1; state = STATE_DIG1; } else { state = STATE_ERROR; } return ch; case STATE_DIG1: if ('0' <= ch && ch <= '9') { control = control * 10 + Character.digit(ch, 10); digits++; if (digits <= 5) { state = STATE_DIG1; } else { state = STATE_ERROR; // sequence too long } } else if (ch == ';' && Utils.isControlChar((char) control)) { state = STATE_START; return (char) control; } else { state = STATE_ERROR; } return ch; case STATE_HEX: if (('0' <= ch && ch <= '9') || ('a' <= ch && ch <= 'f') || ('A' <= ch && ch <= 'F')) { control = control * 16 + Character.digit(ch, 16); digits++; if (digits <= 4) { state = STATE_HEX; } else { state = STATE_ERROR; // sequence too long } } else if (ch == ';' && Utils.isControlChar((char) control)) { state = STATE_START; return (char) control; } else { state = STATE_ERROR; } return ch; case STATE_ERROR: state = STATE_START; return ch; default: // not reachable return ch; } } }
⏎ com/itextpdf/kernel/xmp/impl/FixASCIIControlsReader.java
Or download all of them as a single archive file:
File name: kernel-7.1.4-sources.jar File size: 1201221 bytes Release date: 2018-10-09 Download
⇐ Download and Install iText7-Core-7.1.4.zip
2010-02-18, 85355👍, 0💬
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