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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /parser/html/javasrc/UTF16Buffer.java | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'parser/html/javasrc/UTF16Buffer.java')
-rw-r--r-- | parser/html/javasrc/UTF16Buffer.java | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/parser/html/javasrc/UTF16Buffer.java b/parser/html/javasrc/UTF16Buffer.java new file mode 100644 index 0000000000..ec79185ec2 --- /dev/null +++ b/parser/html/javasrc/UTF16Buffer.java @@ -0,0 +1,151 @@ +/* + * Copyright (c) 2008-2010 Mozilla Foundation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +package nu.validator.htmlparser.impl; + +import nu.validator.htmlparser.annotation.NoLength; + +/** + * An UTF-16 buffer that knows the start and end indeces of its unconsumed + * content. + * + * @version $Id$ + * @author hsivonen + */ +public final class UTF16Buffer { + + /** + * The backing store of the buffer. May be larger than the logical content + * of this <code>UTF16Buffer</code>. + */ + private final @NoLength char[] buffer; + + /** + * The index of the first unconsumed character in the backing buffer. + */ + private int start; + + /** + * The index of the slot immediately after the last character in the backing + * buffer that is part of the logical content of this + * <code>UTF16Buffer</code>. + */ + private int end; + + //[NOCPP[ + + /** + * Constructor for wrapping an existing UTF-16 code unit array. + * + * @param buffer + * the backing buffer + * @param start + * the index of the first character to consume + * @param end + * the index immediately after the last character to consume + */ + public UTF16Buffer(@NoLength char[] buffer, int start, int end) { + this.buffer = buffer; + this.start = start; + this.end = end; + } + + // ]NOCPP] + + /** + * Returns the start index. + * + * @return the start index + */ + public int getStart() { + return start; + } + + /** + * Sets the start index. + * + * @param start + * the start index + */ + public void setStart(int start) { + this.start = start; + } + + /** + * Returns the backing buffer. + * + * @return the backing buffer + */ + public @NoLength char[] getBuffer() { + return buffer; + } + + /** + * Returns the end index. + * + * @return the end index + */ + public int getEnd() { + return end; + } + + /** + * Checks if the buffer has data left. + * + * @return <code>true</code> if there's data left + */ + public boolean hasMore() { + return start < end; + } + + /** + * Returns <code>end - start</code>. + * + * @return <code>end - start</code> + */ + public int getLength() { + return end - start; + } + + /** + * Adjusts the start index to skip over the first character if it is a line + * feed and the previous character was a carriage return. + * + * @param lastWasCR + * whether the previous character was a carriage return + */ + public void adjust(boolean lastWasCR) { + if (lastWasCR && buffer[start] == '\n') { + start++; + } + } + + /** + * Sets the end index. + * + * @param end + * the end index + */ + public void setEnd(int end) { + this.end = end; + } +} |