1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/parser/html/javasrc/UTF16Buffer.java Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,142 @@
1.4 +/*
1.5 + * Copyright (c) 2008-2010 Mozilla Foundation
1.6 + *
1.7 + * Permission is hereby granted, free of charge, to any person obtaining a
1.8 + * copy of this software and associated documentation files (the "Software"),
1.9 + * to deal in the Software without restriction, including without limitation
1.10 + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
1.11 + * and/or sell copies of the Software, and to permit persons to whom the
1.12 + * Software is furnished to do so, subject to the following conditions:
1.13 + *
1.14 + * The above copyright notice and this permission notice shall be included in
1.15 + * all copies or substantial portions of the Software.
1.16 + *
1.17 + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
1.18 + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
1.19 + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
1.20 + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
1.21 + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
1.22 + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
1.23 + * DEALINGS IN THE SOFTWARE.
1.24 + */
1.25 +
1.26 +package nu.validator.htmlparser.impl;
1.27 +
1.28 +import nu.validator.htmlparser.annotation.NoLength;
1.29 +
1.30 +/**
1.31 + * An UTF-16 buffer that knows the start and end indeces of its unconsumed
1.32 + * content.
1.33 + *
1.34 + * @version $Id$
1.35 + * @author hsivonen
1.36 + */
1.37 +public final class UTF16Buffer {
1.38 +
1.39 + /**
1.40 + * The backing store of the buffer. May be larger than the logical content
1.41 + * of this <code>UTF16Buffer</code>.
1.42 + */
1.43 + private final @NoLength char[] buffer;
1.44 +
1.45 + /**
1.46 + * The index of the first unconsumed character in the backing buffer.
1.47 + */
1.48 + private int start;
1.49 +
1.50 + /**
1.51 + * The index of the slot immediately after the last character in the backing
1.52 + * buffer that is part of the logical content of this
1.53 + * <code>UTF16Buffer</code>.
1.54 + */
1.55 + private int end;
1.56 +
1.57 + //[NOCPP[
1.58 +
1.59 + /**
1.60 + * Constructor for wrapping an existing UTF-16 code unit array.
1.61 + *
1.62 + * @param buffer
1.63 + * the backing buffer
1.64 + * @param start
1.65 + * the index of the first character to consume
1.66 + * @param end
1.67 + * the index immediately after the last character to consume
1.68 + */
1.69 + public UTF16Buffer(@NoLength char[] buffer, int start, int end) {
1.70 + this.buffer = buffer;
1.71 + this.start = start;
1.72 + this.end = end;
1.73 + }
1.74 +
1.75 + // ]NOCPP]
1.76 +
1.77 + /**
1.78 + * Returns the start index.
1.79 + *
1.80 + * @return the start index
1.81 + */
1.82 + public int getStart() {
1.83 + return start;
1.84 + }
1.85 +
1.86 + /**
1.87 + * Sets the start index.
1.88 + *
1.89 + * @param start
1.90 + * the start index
1.91 + */
1.92 + public void setStart(int start) {
1.93 + this.start = start;
1.94 + }
1.95 +
1.96 + /**
1.97 + * Returns the backing buffer.
1.98 + *
1.99 + * @return the backing buffer
1.100 + */
1.101 + public @NoLength char[] getBuffer() {
1.102 + return buffer;
1.103 + }
1.104 +
1.105 + /**
1.106 + * Returns the end index.
1.107 + *
1.108 + * @return the end index
1.109 + */
1.110 + public int getEnd() {
1.111 + return end;
1.112 + }
1.113 +
1.114 + /**
1.115 + * Checks if the buffer has data left.
1.116 + *
1.117 + * @return <code>true</code> if there's data left
1.118 + */
1.119 + public boolean hasMore() {
1.120 + return start < end;
1.121 + }
1.122 +
1.123 + /**
1.124 + * Adjusts the start index to skip over the first character if it is a line
1.125 + * feed and the previous character was a carriage return.
1.126 + *
1.127 + * @param lastWasCR
1.128 + * whether the previous character was a carriage return
1.129 + */
1.130 + public void adjust(boolean lastWasCR) {
1.131 + if (lastWasCR && buffer[start] == '\n') {
1.132 + start++;
1.133 + }
1.134 + }
1.135 +
1.136 + /**
1.137 + * Sets the end index.
1.138 + *
1.139 + * @param end
1.140 + * the end index
1.141 + */
1.142 + public void setEnd(int end) {
1.143 + this.end = end;
1.144 + }
1.145 +}
