001    /*
002     * Copyright (c) 2007 Mozilla Foundation
003     *
004     * Permission is hereby granted, free of charge, to any person obtaining a 
005     * copy of this software and associated documentation files (the "Software"), 
006     * to deal in the Software without restriction, including without limitation 
007     * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
008     * and/or sell copies of the Software, and to permit persons to whom the 
009     * Software is furnished to do so, subject to the following conditions:
010     *
011     * The above copyright notice and this permission notice shall be included in 
012     * all copies or substantial portions of the Software.
013     *
014     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
015     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
016     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
017     * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
018     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
019     * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
020     * DEALINGS IN THE SOFTWARE.
021     */
022    
023    package nu.validator.source;
024    
025    final class Line {
026    
027        private char[] buffer;
028        
029        private int offset = 0;
030        
031        private int bufferLength = 0;
032        
033        /**
034         * @param buffer
035         * @param offset
036         */
037        Line(char[] buffer, int offset) {
038            this.buffer = buffer;
039            this.offset = offset;
040        }
041        
042        /**
043         * Returns the buffer.
044         * 
045         * @return the buffer
046         */
047        char[] getBuffer() {
048            return buffer;
049        }
050    
051        /**
052         * Returns the bufferLength.
053         * 
054         * @return the bufferLength
055         */
056        int getBufferLength() {
057            return bufferLength;
058        }
059    
060        /**
061         * Returns the offset.
062         * 
063         * @return the offset
064         */
065        int getOffset() {
066            return offset;
067        }
068    
069        void characters(char[] ch, int start, int length) {
070            int newBufferLength = bufferLength + length;
071            if (offset + newBufferLength > buffer.length) {
072                char[] newBuf = new char[((newBufferLength >> 11) + 1) << 11];
073                System.arraycopy(buffer, offset, newBuf, 0, bufferLength);
074                buffer = newBuf;
075                offset = 0;
076            }
077            System.arraycopy(ch, start, buffer, offset + bufferLength, length);
078            bufferLength = newBufferLength;
079        }
080    
081    }