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Update #48 - Added some features from OptiFine

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lax1dude
2025-01-24 18:39:36 -08:00
parent 1f0d593a8c
commit e83a912e38
1056 changed files with 17706 additions and 898 deletions
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sources/main/java/jdk_internal/icu/impl/UBiDiProps.java Normal file
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/*
* Copyright (c) 2005, 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
*******************************************************************************
*
* Copyright (C) 2004-2014, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: UBiDiProps.java
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 2005jan16
* created by: Markus W. Scherer
*
* Low-level Unicode bidi/shaping properties access.
* Java port of ubidi_props.h/.c.
*/
package jdk_internal.icu.impl;
import java.io.IOException;
import java.nio.ByteBuffer;
import jdk_internal.icu.lang.UCharacter;
public final class UBiDiProps {
// constructors etc. --------------------------------------------------- ***
// port of ubidi_openProps()
private UBiDiProps() throws IOException {
ByteBuffer bytes = ICUBinary.getRequiredData(DATA_FILE_NAME);
readData(bytes);
}
private void readData(ByteBuffer bytes) throws IOException {
// read the header
ICUBinary.readHeader(bytes, FMT, new IsAcceptable());
// read indexes[]
int i, count;
count = bytes.getInt();
if (count < IX_TOP) {
throw new IOException("indexes[0] too small in " + DATA_FILE_NAME);
}
indexes = new int[count];
indexes[0] = count;
for (i = 1; i < count; ++i) {
indexes[i] = bytes.getInt();
}
// read the trie
trie = Trie2_16.createFromSerialized(bytes);
int expectedTrieLength = indexes[IX_TRIE_SIZE];
int trieLength = trie.getSerializedLength();
if (trieLength > expectedTrieLength) {
throw new IOException(DATA_FILE_NAME + ": not enough bytes for the trie");
}
// skip padding after trie bytes
ICUBinary.skipBytes(bytes, expectedTrieLength - trieLength);
// read mirrors[]
count = indexes[IX_MIRROR_LENGTH];
if (count > 0) {
mirrors = new int[count];
for (i = 0; i < count; ++i) {
mirrors[i] = bytes.getInt();
}
}
// read jgArray[]
count = indexes[IX_JG_LIMIT] - indexes[IX_JG_START];
jgArray = new byte[count];
for (i = 0; i < count; ++i) {
jgArray[i] = bytes.get();
}
// read jgArray2[]
count = indexes[IX_JG_LIMIT2] - indexes[IX_JG_START2];
jgArray2 = new byte[count];
for (i = 0; i < count; ++i) {
jgArray2[i] = bytes.get();
}
}
// implement ICUBinary.Authenticate
private static final class IsAcceptable implements ICUBinary.Authenticate {
public boolean isDataVersionAcceptable(byte version[]) {
return version[0] == 2;
}
}
// property access functions ------------------------------------------- ***
public final int getClass(int c) {
return getClassFromProps(trie.get(c));
}
private final int getMirror(int c, int props) {
int delta = getMirrorDeltaFromProps(props);
if (delta != ESC_MIRROR_DELTA) {
return c + delta;
} else {
/* look for mirror code point in the mirrors[] table */
int m;
int i, length;
int c2;
length = indexes[IX_MIRROR_LENGTH];
/* linear search */
for (i = 0; i < length; ++i) {
m = mirrors[i];
c2 = getMirrorCodePoint(m);
if (c == c2) {
/* found c, return its mirror code point using the index in m */
return getMirrorCodePoint(mirrors[getMirrorIndex(m)]);
} else if (c < c2) {
break;
}
}
/* c not found, return it itself */
return c;
}
}
public final int getMirror(int c) {
int props = trie.get(c);
return getMirror(c, props);
}
public final int getJoiningType(int c) {
return (trie.get(c) & JT_MASK) >> JT_SHIFT;
}
public final int getJoiningGroup(int c) {
int start, limit;
start = indexes[IX_JG_START];
limit = indexes[IX_JG_LIMIT];
if (start <= c && c < limit) {
return (int) jgArray[c - start] & 0xff;
}
start = indexes[IX_JG_START2];
limit = indexes[IX_JG_LIMIT2];
if (start <= c && c < limit) {
return (int) jgArray2[c - start] & 0xff;
}
return UCharacter.JoiningGroup.NO_JOINING_GROUP;
}
public final int getPairedBracketType(int c) {
return (trie.get(c) & BPT_MASK) >> BPT_SHIFT;
}
public final int getPairedBracket(int c) {
int props = trie.get(c);
if ((props & BPT_MASK) == 0) {
return c;
} else {
return getMirror(c, props);
}
}
// data members -------------------------------------------------------- ***
private int indexes[];
private int mirrors[];
private byte jgArray[];
private byte jgArray2[];
private Trie2_16 trie;
// data format constants ----------------------------------------------- ***
@SuppressWarnings("deprecation")
private static final String DATA_FILE_NAME = "/assets/eagler/icudt/ubidi.icu";
/* format "BiDi" */
private static final int FMT = 0x42694469;
/* indexes into indexes[] */
private static final int IX_TRIE_SIZE = 2;
private static final int IX_MIRROR_LENGTH = 3;
private static final int IX_JG_START = 4;
private static final int IX_JG_LIMIT = 5;
private static final int IX_JG_START2 = 6; /* new in format version 2.2, ICU 54 */
private static final int IX_JG_LIMIT2 = 7;
private static final int IX_TOP = 16;
// definitions for 16-bit bidi/shaping properties word ----------------- ***
/* CLASS_SHIFT=0, */ /* bidi class: 5 bits (4..0) */
private static final int JT_SHIFT = 5; /* joining type: 3 bits (7..5) */
private static final int BPT_SHIFT = 8; /* Bidi_Paired_Bracket_Type(bpt): 2 bits (9..8) */
private static final int MIRROR_DELTA_SHIFT = 13; /* bidi mirroring delta: 3 bits (15..13) */
private static final int CLASS_MASK = 0x0000001f;
private static final int JT_MASK = 0x000000e0;
private static final int BPT_MASK = 0x00000300;
private static final int getClassFromProps(int props) {
return props & CLASS_MASK;
}
private static final boolean getFlagFromProps(int props, int shift) {
return ((props >> shift) & 1) != 0;
}
private static final int getMirrorDeltaFromProps(int props) {
return (short) props >> MIRROR_DELTA_SHIFT;
}
private static final int ESC_MIRROR_DELTA = -4;
// definitions for 32-bit mirror table entry --------------------------- ***
/* the source Unicode code point takes 21 bits (20..0) */
private static final int MIRROR_INDEX_SHIFT = 21;
private static final int getMirrorCodePoint(int m) {
return m & 0x1fffff;
}
private static final int getMirrorIndex(int m) {
return m >>> MIRROR_INDEX_SHIFT;
}
/*
* public singleton instance
*/
public static final UBiDiProps INSTANCE;
// This static initializer block must be placed after
// other static member initialization
static {
try {
INSTANCE = new UBiDiProps();
} catch (IOException e) {
throw new RuntimeException("Missing resource: \"" + DATA_FILE_NAME + "\"; Reason: " + e.getMessage());
}
}
}