| /* |
| * Copyright (c) 2000, 2010, 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. |
| */ |
| |
| package java.awt.font; |
| |
| import java.io.IOException; |
| import java.io.ObjectOutputStream; |
| import java.util.Arrays; |
| import java.util.Comparator; |
| import java.util.EnumSet; |
| import java.util.Set; |
| |
| /** |
| * The <code>NumericShaper</code> class is used to convert Latin-1 (European) |
| * digits to other Unicode decimal digits. Users of this class will |
| * primarily be people who wish to present data using |
| * national digit shapes, but find it more convenient to represent the |
| * data internally using Latin-1 (European) digits. This does not |
| * interpret the deprecated numeric shape selector character (U+206E). |
| * <p> |
| * Instances of <code>NumericShaper</code> are typically applied |
| * as attributes to text with the |
| * {@link TextAttribute#NUMERIC_SHAPING NUMERIC_SHAPING} attribute |
| * of the <code>TextAttribute</code> class. |
| * For example, this code snippet causes a <code>TextLayout</code> to |
| * shape European digits to Arabic in an Arabic context:<br> |
| * <blockquote><pre> |
| * Map map = new HashMap(); |
| * map.put(TextAttribute.NUMERIC_SHAPING, |
| * NumericShaper.getContextualShaper(NumericShaper.ARABIC)); |
| * FontRenderContext frc = ...; |
| * TextLayout layout = new TextLayout(text, map, frc); |
| * layout.draw(g2d, x, y); |
| * </pre></blockquote> |
| * <br> |
| * It is also possible to perform numeric shaping explicitly using instances |
| * of <code>NumericShaper</code>, as this code snippet demonstrates:<br> |
| * <blockquote><pre> |
| * char[] text = ...; |
| * // shape all EUROPEAN digits (except zero) to ARABIC digits |
| * NumericShaper shaper = NumericShaper.getShaper(NumericShaper.ARABIC); |
| * shaper.shape(text, start, count); |
| * |
| * // shape European digits to ARABIC digits if preceding text is Arabic, or |
| * // shape European digits to TAMIL digits if preceding text is Tamil, or |
| * // leave European digits alone if there is no preceding text, or |
| * // preceding text is neither Arabic nor Tamil |
| * NumericShaper shaper = |
| * NumericShaper.getContextualShaper(NumericShaper.ARABIC | |
| * NumericShaper.TAMIL, |
| * NumericShaper.EUROPEAN); |
| * shaper.shape(text, start, count); |
| * </pre></blockquote> |
| * |
| * <p><b>Bit mask- and enum-based Unicode ranges</b></p> |
| * |
| * <p>This class supports two different programming interfaces to |
| * represent Unicode ranges for script-specific digits: bit |
| * mask-based ones, such as {@link #ARABIC NumericShaper.ARABIC}, and |
| * enum-based ones, such as {@link NumericShaper.Range#ARABIC}. |
| * Multiple ranges can be specified by ORing bit mask-based constants, |
| * such as: |
| * <blockquote><pre> |
| * NumericShaper.ARABIC | NumericShaper.TAMIL |
| * </pre></blockquote> |
| * or creating a {@code Set} with the {@link NumericShaper.Range} |
| * constants, such as: |
| * <blockquote><pre> |
| * EnumSet.of(NumericShaper.Scirpt.ARABIC, NumericShaper.Range.TAMIL) |
| * </pre></blockquote> |
| * The enum-based ranges are a super set of the bit mask-based ones. |
| * |
| * <p>If the two interfaces are mixed (including serialization), |
| * Unicode range values are mapped to their counterparts where such |
| * mapping is possible, such as {@code NumericShaper.Range.ARABIC} |
| * from/to {@code NumericShaper.ARABIC}. If any unmappable range |
| * values are specified, such as {@code NumericShaper.Range.BALINESE}, |
| * those ranges are ignored. |
| * |
| * <p><b>Decimal Digits Precedence</b></p> |
| * |
| * <p>A Unicode range may have more than one set of decimal digits. If |
| * multiple decimal digits sets are specified for the same Unicode |
| * range, one of the sets will take precedence as follows. |
| * |
| * <table border=1 cellspacing=3 cellpadding=0 summary="NumericShaper constants precedence."> |
| * <tr> |
| * <th class="TableHeadingColor">Unicode Range</th> |
| * <th class="TableHeadingColor"><code>NumericShaper</code> Constants</th> |
| * <th class="TableHeadingColor">Precedence</th> |
| * </tr> |
| * <tr> |
| * <td rowspan="2">Arabic</td> |
| * <td>{@link NumericShaper#ARABIC NumericShaper.ARABIC}<br> |
| * {@link NumericShaper#EASTERN_ARABIC NumericShaper.EASTERN_ARABIC}</td> |
| * <td>{@link NumericShaper#EASTERN_ARABIC NumericShaper.EASTERN_ARABIC}</td> |
| * </tr> |
| * <tr> |
| * <td>{@link NumericShaper.Range#ARABIC}<br> |
| * {@link NumericShaper.Range#EASTERN_ARABIC}</td> |
| * <td>{@link NumericShaper.Range#EASTERN_ARABIC}</td> |
| * </tr> |
| * <tr> |
| * <td>Tai Tham</td> |
| * <td>{@link NumericShaper.Range#TAI_THAM_HORA}<br> |
| * {@link NumericShaper.Range#TAI_THAM_THAM}</td> |
| * <td>{@link NumericShaper.Range#TAI_THAM_THAM}</td> |
| * </tr> |
| * </table> |
| * |
| * @since 1.4 |
| */ |
| |
| public final class NumericShaper implements java.io.Serializable { |
| /** |
| * A {@code NumericShaper.Range} represents a Unicode range of a |
| * script having its own decimal digits. For example, the {@link |
| * NumericShaper.Range#THAI} range has the Thai digits, THAI DIGIT |
| * ZERO (U+0E50) to THAI DIGIT NINE (U+0E59). |
| * |
| * <p>The <code>Range</code> enum replaces the traditional bit |
| * mask-based values (e.g., {@link NumericShaper#ARABIC}), and |
| * supports more Unicode ranges than the bit mask-based ones. For |
| * example, the following code using the bit mask: |
| * <blockquote><pre> |
| * NumericShaper.getContextualShaper(NumericShaper.ARABIC | |
| * NumericShaper.TAMIL, |
| * NumericShaper.EUROPEAN); |
| * </pre></blockquote> |
| * can be written using this enum as: |
| * <blockquote><pre> |
| * NumericShaper.getContextualShaper(EnumSet.of( |
| * NumericShaper.Range.ARABIC, |
| * NumericShaper.Range.TAMIL), |
| * NumericShaper.Range.EUROPEAN); |
| * </pre></blockquote> |
| * |
| * @since 1.7 |
| */ |
| public static enum Range { |
| // The order of EUROPEAN to MOGOLIAN must be consistent |
| // with the bitmask-based constants. |
| /** |
| * The Latin (European) range with the Latin (ASCII) digits. |
| */ |
| EUROPEAN ('\u0030', '\u0000', '\u0300'), |
| /** |
| * The Arabic range with the Arabic-Indic digits. |
| */ |
| ARABIC ('\u0660', '\u0600', '\u0780'), |
| /** |
| * The Arabic range with the Eastern Arabic-Indic digits. |
| */ |
| EASTERN_ARABIC ('\u06f0', '\u0600', '\u0780'), |
| /** |
| * The Devanagari range with the Devanagari digits. |
| */ |
| DEVANAGARI ('\u0966', '\u0900', '\u0980'), |
| /** |
| * The Bengali range with the Bengali digits. |
| */ |
| BENGALI ('\u09e6', '\u0980', '\u0a00'), |
| /** |
| * The Gurmukhi range with the Gurmukhi digits. |
| */ |
| GURMUKHI ('\u0a66', '\u0a00', '\u0a80'), |
| /** |
| * The Gujarati range with the Gujarati digits. |
| */ |
| GUJARATI ('\u0ae6', '\u0b00', '\u0b80'), |
| /** |
| * The Oriya range with the Oriya digits. |
| */ |
| ORIYA ('\u0b66', '\u0b00', '\u0b80'), |
| /** |
| * The Tamil range with the Tamil digits. |
| */ |
| TAMIL ('\u0be6', '\u0b80', '\u0c00'), |
| /** |
| * The Telugu range with the Telugu digits. |
| */ |
| TELUGU ('\u0c66', '\u0c00', '\u0c80'), |
| /** |
| * The Kannada range with the Kannada digits. |
| */ |
| KANNADA ('\u0ce6', '\u0c80', '\u0d00'), |
| /** |
| * The Malayalam range with the Malayalam digits. |
| */ |
| MALAYALAM ('\u0d66', '\u0d00', '\u0d80'), |
| /** |
| * The Thai range with the Thai digits. |
| */ |
| THAI ('\u0e50', '\u0e00', '\u0e80'), |
| /** |
| * The Lao range with the Lao digits. |
| */ |
| LAO ('\u0ed0', '\u0e80', '\u0f00'), |
| /** |
| * The Tibetan range with the Tibetan digits. |
| */ |
| TIBETAN ('\u0f20', '\u0f00', '\u1000'), |
| /** |
| * The Myanmar range with the Myanmar digits. |
| */ |
| MYANMAR ('\u1040', '\u1000', '\u1080'), |
| /** |
| * The Ethiopic range with the Ethiopic digits. Ethiopic |
| * does not have a decimal digit 0 so Latin (European) 0 is |
| * used. |
| */ |
| ETHIOPIC ('\u1369', '\u1200', '\u1380') { |
| @Override |
| char getNumericBase() { return 1; } |
| }, |
| /** |
| * The Khmer range with the Khmer digits. |
| */ |
| KHMER ('\u17e0', '\u1780', '\u1800'), |
| /** |
| * The Mongolian range with the Mongolian digits. |
| */ |
| MONGOLIAN ('\u1810', '\u1800', '\u1900'), |
| // The order of EUROPEAN to MOGOLIAN must be consistent |
| // with the bitmask-based constants. |
| |
| /** |
| * The N'Ko range with the N'Ko digits. |
| */ |
| NKO ('\u07c0', '\u07c0', '\u0800'), |
| /** |
| * The Myanmar range with the Myanmar Shan digits. |
| */ |
| MYANMAR_SHAN ('\u1090', '\u1000', '\u10a0'), |
| /** |
| * The Limbu range with the Limbu digits. |
| */ |
| LIMBU ('\u1946', '\u1900', '\u1950'), |
| /** |
| * The New Tai Lue range with the New Tai Lue digits. |
| */ |
| NEW_TAI_LUE ('\u19d0', '\u1980', '\u19e0'), |
| /** |
| * The Balinese range with the Balinese digits. |
| */ |
| BALINESE ('\u1b50', '\u1b00', '\u1b80'), |
| /** |
| * The Sundanese range with the Sundanese digits. |
| */ |
| SUNDANESE ('\u1bb0', '\u1b80', '\u1bc0'), |
| /** |
| * The Lepcha range with the Lepcha digits. |
| */ |
| LEPCHA ('\u1c40', '\u1c00', '\u1c50'), |
| /** |
| * The Ol Chiki range with the Ol Chiki digits. |
| */ |
| OL_CHIKI ('\u1c50', '\u1c50', '\u1c80'), |
| /** |
| * The Vai range with the Vai digits. |
| */ |
| VAI ('\ua620', '\ua500', '\ua640'), |
| /** |
| * The Saurashtra range with the Saurashtra digits. |
| */ |
| SAURASHTRA ('\ua8d0', '\ua880', '\ua8e0'), |
| /** |
| * The Kayah Li range with the Kayah Li digits. |
| */ |
| KAYAH_LI ('\ua900', '\ua900', '\ua930'), |
| /** |
| * The Cham range with the Cham digits. |
| */ |
| CHAM ('\uaa50', '\uaa00', '\uaa60'), |
| /** |
| * The Tai Tham Hora range with the Tai Tham Hora digits. |
| */ |
| TAI_THAM_HORA ('\u1a80', '\u1a20', '\u1ab0'), |
| /** |
| * The Tai Tham Tham range with the Tai Tham Tham digits. |
| */ |
| TAI_THAM_THAM ('\u1a90', '\u1a20', '\u1ab0'), |
| /** |
| * The Javanese range with the Javanese digits. |
| */ |
| JAVANESE ('\ua9d0', '\ua980', '\ua9e0'), |
| /** |
| * The Meetei Mayek range with the Meetei Mayek digits. |
| */ |
| MEETEI_MAYEK ('\uabf0', '\uabc0', '\uac00'); |
| |
| private static int toRangeIndex(Range script) { |
| int index = script.ordinal(); |
| return index < NUM_KEYS ? index : -1; |
| } |
| |
| private static Range indexToRange(int index) { |
| return index < NUM_KEYS ? Range.values()[index] : null; |
| } |
| |
| private static int toRangeMask(Set<Range> ranges) { |
| int m = 0; |
| for (Range range : ranges) { |
| int index = range.ordinal(); |
| if (index < NUM_KEYS) { |
| m |= 1 << index; |
| } |
| } |
| return m; |
| } |
| |
| private static Set<Range> maskToRangeSet(int mask) { |
| Set<Range> set = EnumSet.noneOf(Range.class); |
| Range[] a = Range.values(); |
| for (int i = 0; i < NUM_KEYS; i++) { |
| if ((mask & (1 << i)) != 0) { |
| set.add(a[i]); |
| } |
| } |
| return set; |
| } |
| |
| // base character of range digits |
| private final int base; |
| // Unicode range |
| private final int start, // inclusive |
| end; // exclusive |
| |
| private Range(int base, int start, int end) { |
| this.base = base - ('0' + getNumericBase()); |
| this.start = start; |
| this.end = end; |
| } |
| |
| private int getDigitBase() { |
| return base; |
| } |
| |
| char getNumericBase() { |
| return 0; |
| } |
| |
| private boolean inRange(int c) { |
| return start <= c && c < end; |
| } |
| } |
| |
| /** index of context for contextual shaping - values range from 0 to 18 */ |
| private int key; |
| |
| /** flag indicating whether to shape contextually (high bit) and which |
| * digit ranges to shape (bits 0-18) |
| */ |
| private int mask; |
| |
| /** |
| * The context {@code Range} for contextual shaping or the {@code |
| * Range} for non-contextual shaping. {@code null} for the bit |
| * mask-based API. |
| * |
| * @since 1.7 |
| */ |
| private Range shapingRange; |
| |
| /** |
| * {@code Set<Range>} indicating which Unicode ranges to |
| * shape. {@code null} for the bit mask-based API. |
| */ |
| private transient Set<Range> rangeSet; |
| |
| /** |
| * rangeSet.toArray() value. Sorted by Range.base when the number |
| * of elements is greater then BSEARCH_THRESHOLD. |
| */ |
| private transient Range[] rangeArray; |
| |
| /** |
| * If more than BSEARCH_THRESHOLD ranges are specified, binary search is used. |
| */ |
| private static final int BSEARCH_THRESHOLD = 3; |
| |
| private static final long serialVersionUID = -8022764705923730308L; |
| |
| /** Identifies the Latin-1 (European) and extended range, and |
| * Latin-1 (European) decimal base. |
| */ |
| public static final int EUROPEAN = 1<<0; |
| |
| /** Identifies the ARABIC range and decimal base. */ |
| public static final int ARABIC = 1<<1; |
| |
| /** Identifies the ARABIC range and ARABIC_EXTENDED decimal base. */ |
| public static final int EASTERN_ARABIC = 1<<2; |
| |
| /** Identifies the DEVANAGARI range and decimal base. */ |
| public static final int DEVANAGARI = 1<<3; |
| |
| /** Identifies the BENGALI range and decimal base. */ |
| public static final int BENGALI = 1<<4; |
| |
| /** Identifies the GURMUKHI range and decimal base. */ |
| public static final int GURMUKHI = 1<<5; |
| |
| /** Identifies the GUJARATI range and decimal base. */ |
| public static final int GUJARATI = 1<<6; |
| |
| /** Identifies the ORIYA range and decimal base. */ |
| public static final int ORIYA = 1<<7; |
| |
| /** Identifies the TAMIL range and decimal base. */ |
| // TAMIL DIGIT ZERO was added in Unicode 4.1 |
| public static final int TAMIL = 1<<8; |
| |
| /** Identifies the TELUGU range and decimal base. */ |
| public static final int TELUGU = 1<<9; |
| |
| /** Identifies the KANNADA range and decimal base. */ |
| public static final int KANNADA = 1<<10; |
| |
| /** Identifies the MALAYALAM range and decimal base. */ |
| public static final int MALAYALAM = 1<<11; |
| |
| /** Identifies the THAI range and decimal base. */ |
| public static final int THAI = 1<<12; |
| |
| /** Identifies the LAO range and decimal base. */ |
| public static final int LAO = 1<<13; |
| |
| /** Identifies the TIBETAN range and decimal base. */ |
| public static final int TIBETAN = 1<<14; |
| |
| /** Identifies the MYANMAR range and decimal base. */ |
| public static final int MYANMAR = 1<<15; |
| |
| /** Identifies the ETHIOPIC range and decimal base. */ |
| public static final int ETHIOPIC = 1<<16; |
| |
| /** Identifies the KHMER range and decimal base. */ |
| public static final int KHMER = 1<<17; |
| |
| /** Identifies the MONGOLIAN range and decimal base. */ |
| public static final int MONGOLIAN = 1<<18; |
| |
| /** Identifies all ranges, for full contextual shaping. |
| * |
| * <p>This constant specifies all of the bit mask-based |
| * ranges. Use {@code EmunSet.allOf(NumericShaper.Range.class)} to |
| * specify all of the enum-based ranges. |
| */ |
| public static final int ALL_RANGES = 0x0007ffff; |
| |
| private static final int EUROPEAN_KEY = 0; |
| private static final int ARABIC_KEY = 1; |
| private static final int EASTERN_ARABIC_KEY = 2; |
| private static final int DEVANAGARI_KEY = 3; |
| private static final int BENGALI_KEY = 4; |
| private static final int GURMUKHI_KEY = 5; |
| private static final int GUJARATI_KEY = 6; |
| private static final int ORIYA_KEY = 7; |
| private static final int TAMIL_KEY = 8; |
| private static final int TELUGU_KEY = 9; |
| private static final int KANNADA_KEY = 10; |
| private static final int MALAYALAM_KEY = 11; |
| private static final int THAI_KEY = 12; |
| private static final int LAO_KEY = 13; |
| private static final int TIBETAN_KEY = 14; |
| private static final int MYANMAR_KEY = 15; |
| private static final int ETHIOPIC_KEY = 16; |
| private static final int KHMER_KEY = 17; |
| private static final int MONGOLIAN_KEY = 18; |
| |
| private static final int NUM_KEYS = MONGOLIAN_KEY + 1; // fixed |
| |
| private static final int CONTEXTUAL_MASK = 1<<31; |
| |
| private static final char[] bases = { |
| '\u0030' - '\u0030', // EUROPEAN |
| '\u0660' - '\u0030', // ARABIC-INDIC |
| '\u06f0' - '\u0030', // EXTENDED ARABIC-INDIC (EASTERN_ARABIC) |
| '\u0966' - '\u0030', // DEVANAGARI |
| '\u09e6' - '\u0030', // BENGALI |
| '\u0a66' - '\u0030', // GURMUKHI |
| '\u0ae6' - '\u0030', // GUJARATI |
| '\u0b66' - '\u0030', // ORIYA |
| '\u0be6' - '\u0030', // TAMIL - zero was added in Unicode 4.1 |
| '\u0c66' - '\u0030', // TELUGU |
| '\u0ce6' - '\u0030', // KANNADA |
| '\u0d66' - '\u0030', // MALAYALAM |
| '\u0e50' - '\u0030', // THAI |
| '\u0ed0' - '\u0030', // LAO |
| '\u0f20' - '\u0030', // TIBETAN |
| '\u1040' - '\u0030', // MYANMAR |
| '\u1369' - '\u0031', // ETHIOPIC - no zero |
| '\u17e0' - '\u0030', // KHMER |
| '\u1810' - '\u0030', // MONGOLIAN |
| }; |
| |
| // some ranges adjoin or overlap, rethink if we want to do a binary search on this |
| |
| private static final char[] contexts = { |
| '\u0000', '\u0300', // 'EUROPEAN' (really latin-1 and extended) |
| '\u0600', '\u0780', // ARABIC |
| '\u0600', '\u0780', // EASTERN_ARABIC -- note overlap with arabic |
| '\u0900', '\u0980', // DEVANAGARI |
| '\u0980', '\u0a00', // BENGALI |
| '\u0a00', '\u0a80', // GURMUKHI |
| '\u0a80', '\u0b00', // GUJARATI |
| '\u0b00', '\u0b80', // ORIYA |
| '\u0b80', '\u0c00', // TAMIL |
| '\u0c00', '\u0c80', // TELUGU |
| '\u0c80', '\u0d00', // KANNADA |
| '\u0d00', '\u0d80', // MALAYALAM |
| '\u0e00', '\u0e80', // THAI |
| '\u0e80', '\u0f00', // LAO |
| '\u0f00', '\u1000', // TIBETAN |
| '\u1000', '\u1080', // MYANMAR |
| '\u1200', '\u1380', // ETHIOPIC - note missing zero |
| '\u1780', '\u1800', // KHMER |
| '\u1800', '\u1900', // MONGOLIAN |
| '\uffff', |
| }; |
| |
| // assume most characters are near each other so probing the cache is infrequent, |
| // and a linear probe is ok. |
| |
| private static int ctCache = 0; |
| private static int ctCacheLimit = contexts.length - 2; |
| |
| // warning, synchronize access to this as it modifies state |
| private static int getContextKey(char c) { |
| if (c < contexts[ctCache]) { |
| while (ctCache > 0 && c < contexts[ctCache]) --ctCache; |
| } else if (c >= contexts[ctCache + 1]) { |
| while (ctCache < ctCacheLimit && c >= contexts[ctCache + 1]) ++ctCache; |
| } |
| |
| // if we're not in a known range, then return EUROPEAN as the range key |
| return (ctCache & 0x1) == 0 ? (ctCache / 2) : EUROPEAN_KEY; |
| } |
| |
| // cache for the NumericShaper.Range version |
| private transient volatile Range currentRange = Range.EUROPEAN; |
| |
| private Range rangeForCodePoint(final int codepoint) { |
| if (currentRange.inRange(codepoint)) { |
| return currentRange; |
| } |
| |
| final Range[] ranges = rangeArray; |
| if (ranges.length > BSEARCH_THRESHOLD) { |
| int lo = 0; |
| int hi = ranges.length - 1; |
| while (lo <= hi) { |
| int mid = (lo + hi) / 2; |
| Range range = ranges[mid]; |
| if (codepoint < range.start) { |
| hi = mid - 1; |
| } else if (codepoint >= range.end) { |
| lo = mid + 1; |
| } else { |
| currentRange = range; |
| return range; |
| } |
| } |
| } else { |
| for (int i = 0; i < ranges.length; i++) { |
| if (ranges[i].inRange(codepoint)) { |
| return ranges[i]; |
| } |
| } |
| } |
| return Range.EUROPEAN; |
| } |
| |
| /* |
| * A range table of strong directional characters (types L, R, AL). |
| * Even (left) indexes are starts of ranges of non-strong-directional (or undefined) |
| * characters, odd (right) indexes are starts of ranges of strong directional |
| * characters. |
| */ |
| private static int[] strongTable = { |
| 0x0000, 0x0041, |
| 0x005b, 0x0061, |
| 0x007b, 0x00aa, |
| 0x00ab, 0x00b5, |
| 0x00b6, 0x00ba, |
| 0x00bb, 0x00c0, |
| 0x00d7, 0x00d8, |
| 0x00f7, 0x00f8, |
| 0x02b9, 0x02bb, |
| 0x02c2, 0x02d0, |
| 0x02d2, 0x02e0, |
| 0x02e5, 0x02ee, |
| 0x02ef, 0x0370, |
| 0x0374, 0x0376, |
| 0x037e, 0x0386, |
| 0x0387, 0x0388, |
| 0x03f6, 0x03f7, |
| 0x0483, 0x048a, |
| 0x058a, 0x05be, |
| 0x05bf, 0x05c0, |
| 0x05c1, 0x05c3, |
| 0x05c4, 0x05c6, |
| 0x05c7, 0x05d0, |
| 0x0600, 0x0608, |
| 0x0609, 0x060b, |
| 0x060c, 0x060d, |
| 0x060e, 0x061b, |
| 0x064b, 0x066d, |
| 0x0670, 0x0671, |
| 0x06d6, 0x06e5, |
| 0x06e7, 0x06ee, |
| 0x06f0, 0x06fa, |
| 0x070f, 0x0710, |
| 0x0711, 0x0712, |
| 0x0730, 0x074d, |
| 0x07a6, 0x07b1, |
| 0x07eb, 0x07f4, |
| 0x07f6, 0x07fa, |
| 0x0816, 0x081a, |
| 0x081b, 0x0824, |
| 0x0825, 0x0828, |
| 0x0829, 0x0830, |
| 0x0859, 0x085e, |
| 0x0900, 0x0903, |
| 0x093a, 0x093b, |
| 0x093c, 0x093d, |
| 0x0941, 0x0949, |
| 0x094d, 0x094e, |
| 0x0951, 0x0958, |
| 0x0962, 0x0964, |
| 0x0981, 0x0982, |
| 0x09bc, 0x09bd, |
| 0x09c1, 0x09c7, |
| 0x09cd, 0x09ce, |
| 0x09e2, 0x09e6, |
| 0x09f2, 0x09f4, |
| 0x09fb, 0x0a03, |
| 0x0a3c, 0x0a3e, |
| 0x0a41, 0x0a59, |
| 0x0a70, 0x0a72, |
| 0x0a75, 0x0a83, |
| 0x0abc, 0x0abd, |
| 0x0ac1, 0x0ac9, |
| 0x0acd, 0x0ad0, |
| 0x0ae2, 0x0ae6, |
| 0x0af1, 0x0b02, |
| 0x0b3c, 0x0b3d, |
| 0x0b3f, 0x0b40, |
| 0x0b41, 0x0b47, |
| 0x0b4d, 0x0b57, |
| 0x0b62, 0x0b66, |
| 0x0b82, 0x0b83, |
| 0x0bc0, 0x0bc1, |
| 0x0bcd, 0x0bd0, |
| 0x0bf3, 0x0c01, |
| 0x0c3e, 0x0c41, |
| 0x0c46, 0x0c58, |
| 0x0c62, 0x0c66, |
| 0x0c78, 0x0c7f, |
| 0x0cbc, 0x0cbd, |
| 0x0ccc, 0x0cd5, |
| 0x0ce2, 0x0ce6, |
| 0x0d41, 0x0d46, |
| 0x0d4d, 0x0d4e, |
| 0x0d62, 0x0d66, |
| 0x0dca, 0x0dcf, |
| 0x0dd2, 0x0dd8, |
| 0x0e31, 0x0e32, |
| 0x0e34, 0x0e40, |
| 0x0e47, 0x0e4f, |
| 0x0eb1, 0x0eb2, |
| 0x0eb4, 0x0ebd, |
| 0x0ec8, 0x0ed0, |
| 0x0f18, 0x0f1a, |
| 0x0f35, 0x0f36, |
| 0x0f37, 0x0f38, |
| 0x0f39, 0x0f3e, |
| 0x0f71, 0x0f7f, |
| 0x0f80, 0x0f85, |
| 0x0f86, 0x0f88, |
| 0x0f8d, 0x0fbe, |
| 0x0fc6, 0x0fc7, |
| 0x102d, 0x1031, |
| 0x1032, 0x1038, |
| 0x1039, 0x103b, |
| 0x103d, 0x103f, |
| 0x1058, 0x105a, |
| 0x105e, 0x1061, |
| 0x1071, 0x1075, |
| 0x1082, 0x1083, |
| 0x1085, 0x1087, |
| 0x108d, 0x108e, |
| 0x109d, 0x109e, |
| 0x135d, 0x1360, |
| 0x1390, 0x13a0, |
| 0x1400, 0x1401, |
| 0x1680, 0x1681, |
| 0x169b, 0x16a0, |
| 0x1712, 0x1720, |
| 0x1732, 0x1735, |
| 0x1752, 0x1760, |
| 0x1772, 0x1780, |
| 0x17b7, 0x17be, |
| 0x17c6, 0x17c7, |
| 0x17c9, 0x17d4, |
| 0x17db, 0x17dc, |
| 0x17dd, 0x17e0, |
| 0x17f0, 0x1810, |
| 0x18a9, 0x18aa, |
| 0x1920, 0x1923, |
| 0x1927, 0x1929, |
| 0x1932, 0x1933, |
| 0x1939, 0x1946, |
| 0x19de, 0x1a00, |
| 0x1a17, 0x1a19, |
| 0x1a56, 0x1a57, |
| 0x1a58, 0x1a61, |
| 0x1a62, 0x1a63, |
| 0x1a65, 0x1a6d, |
| 0x1a73, 0x1a80, |
| 0x1b00, 0x1b04, |
| 0x1b34, 0x1b35, |
| 0x1b36, 0x1b3b, |
| 0x1b3c, 0x1b3d, |
| 0x1b42, 0x1b43, |
| 0x1b6b, 0x1b74, |
| 0x1b80, 0x1b82, |
| 0x1ba2, 0x1ba6, |
| 0x1ba8, 0x1baa, |
| 0x1be6, 0x1be7, |
| 0x1be8, 0x1bea, |
| 0x1bed, 0x1bee, |
| 0x1bef, 0x1bf2, |
| 0x1c2c, 0x1c34, |
| 0x1c36, 0x1c3b, |
| 0x1cd0, 0x1cd3, |
| 0x1cd4, 0x1ce1, |
| 0x1ce2, 0x1ce9, |
| 0x1ced, 0x1cee, |
| 0x1dc0, 0x1e00, |
| 0x1fbd, 0x1fbe, |
| 0x1fbf, 0x1fc2, |
| 0x1fcd, 0x1fd0, |
| 0x1fdd, 0x1fe0, |
| 0x1fed, 0x1ff2, |
| 0x1ffd, 0x200e, |
| 0x2010, 0x2071, |
| 0x2074, 0x207f, |
| 0x2080, 0x2090, |
| 0x20a0, 0x2102, |
| 0x2103, 0x2107, |
| 0x2108, 0x210a, |
| 0x2114, 0x2115, |
| 0x2116, 0x2119, |
| 0x211e, 0x2124, |
| 0x2125, 0x2126, |
| 0x2127, 0x2128, |
| 0x2129, 0x212a, |
| 0x212e, 0x212f, |
| 0x213a, 0x213c, |
| 0x2140, 0x2145, |
| 0x214a, 0x214e, |
| 0x2150, 0x2160, |
| 0x2189, 0x2336, |
| 0x237b, 0x2395, |
| 0x2396, 0x249c, |
| 0x24ea, 0x26ac, |
| 0x26ad, 0x2800, |
| 0x2900, 0x2c00, |
| 0x2ce5, 0x2ceb, |
| 0x2cef, 0x2d00, |
| 0x2d7f, 0x2d80, |
| 0x2de0, 0x3005, |
| 0x3008, 0x3021, |
| 0x302a, 0x3031, |
| 0x3036, 0x3038, |
| 0x303d, 0x3041, |
| 0x3099, 0x309d, |
| 0x30a0, 0x30a1, |
| 0x30fb, 0x30fc, |
| 0x31c0, 0x31f0, |
| 0x321d, 0x3220, |
| 0x3250, 0x3260, |
| 0x327c, 0x327f, |
| 0x32b1, 0x32c0, |
| 0x32cc, 0x32d0, |
| 0x3377, 0x337b, |
| 0x33de, 0x33e0, |
| 0x33ff, 0x3400, |
| 0x4dc0, 0x4e00, |
| 0xa490, 0xa4d0, |
| 0xa60d, 0xa610, |
| 0xa66f, 0xa680, |
| 0xa6f0, 0xa6f2, |
| 0xa700, 0xa722, |
| 0xa788, 0xa789, |
| 0xa802, 0xa803, |
| 0xa806, 0xa807, |
| 0xa80b, 0xa80c, |
| 0xa825, 0xa827, |
| 0xa828, 0xa830, |
| 0xa838, 0xa840, |
| 0xa874, 0xa880, |
| 0xa8c4, 0xa8ce, |
| 0xa8e0, 0xa8f2, |
| 0xa926, 0xa92e, |
| 0xa947, 0xa952, |
| 0xa980, 0xa983, |
| 0xa9b3, 0xa9b4, |
| 0xa9b6, 0xa9ba, |
| 0xa9bc, 0xa9bd, |
| 0xaa29, 0xaa2f, |
| 0xaa31, 0xaa33, |
| 0xaa35, 0xaa40, |
| 0xaa43, 0xaa44, |
| 0xaa4c, 0xaa4d, |
| 0xaab0, 0xaab1, |
| 0xaab2, 0xaab5, |
| 0xaab7, 0xaab9, |
| 0xaabe, 0xaac0, |
| 0xaac1, 0xaac2, |
| 0xabe5, 0xabe6, |
| 0xabe8, 0xabe9, |
| 0xabed, 0xabf0, |
| 0xfb1e, 0xfb1f, |
| 0xfb29, 0xfb2a, |
| 0xfd3e, 0xfd50, |
| 0xfdfd, 0xfe70, |
| 0xfeff, 0xff21, |
| 0xff3b, 0xff41, |
| 0xff5b, 0xff66, |
| 0xffe0, 0x10000, |
| 0x10101, 0x10102, |
| 0x10140, 0x101d0, |
| 0x101fd, 0x10280, |
| 0x1091f, 0x10920, |
| 0x10a01, 0x10a10, |
| 0x10a38, 0x10a40, |
| 0x10b39, 0x10b40, |
| 0x10e60, 0x11000, |
| 0x11001, 0x11002, |
| 0x11038, 0x11047, |
| 0x11052, 0x11066, |
| 0x11080, 0x11082, |
| 0x110b3, 0x110b7, |
| 0x110b9, 0x110bb, |
| 0x1d167, 0x1d16a, |
| 0x1d173, 0x1d183, |
| 0x1d185, 0x1d18c, |
| 0x1d1aa, 0x1d1ae, |
| 0x1d200, 0x1d360, |
| 0x1d6db, 0x1d6dc, |
| 0x1d715, 0x1d716, |
| 0x1d74f, 0x1d750, |
| 0x1d789, 0x1d78a, |
| 0x1d7c3, 0x1d7c4, |
| 0x1d7ce, 0x1f110, |
| 0x1f300, 0x1f48c, |
| 0x1f48d, 0x1f524, |
| 0x1f525, 0x20000, |
| 0xe0001, 0xf0000, |
| 0x10fffe, 0x10ffff // sentinel |
| }; |
| |
| |
| // use a binary search with a cache |
| |
| private transient volatile int stCache = 0; |
| |
| private boolean isStrongDirectional(char c) { |
| int cachedIndex = stCache; |
| if (c < strongTable[cachedIndex]) { |
| cachedIndex = search(c, strongTable, 0, cachedIndex); |
| } else if (c >= strongTable[cachedIndex + 1]) { |
| cachedIndex = search(c, strongTable, cachedIndex + 1, |
| strongTable.length - cachedIndex - 1); |
| } |
| boolean val = (cachedIndex & 0x1) == 1; |
| stCache = cachedIndex; |
| return val; |
| } |
| |
| private static int getKeyFromMask(int mask) { |
| int key = 0; |
| while (key < NUM_KEYS && ((mask & (1<<key)) == 0)) { |
| ++key; |
| } |
| if (key == NUM_KEYS || ((mask & ~(1<<key)) != 0)) { |
| throw new IllegalArgumentException("invalid shaper: " + Integer.toHexString(mask)); |
| } |
| return key; |
| } |
| |
| /** |
| * Returns a shaper for the provided unicode range. All |
| * Latin-1 (EUROPEAN) digits are converted |
| * to the corresponding decimal unicode digits. |
| * @param singleRange the specified Unicode range |
| * @return a non-contextual numeric shaper |
| * @throws IllegalArgumentException if the range is not a single range |
| */ |
| public static NumericShaper getShaper(int singleRange) { |
| int key = getKeyFromMask(singleRange); |
| return new NumericShaper(key, singleRange); |
| } |
| |
| /** |
| * Returns a shaper for the provided Unicode |
| * range. All Latin-1 (EUROPEAN) digits are converted to the |
| * corresponding decimal digits of the specified Unicode range. |
| * |
| * @param singleRange the Unicode range given by a {@link |
| * NumericShaper.Range} constant. |
| * @return a non-contextual {@code NumericShaper}. |
| * @throws NullPointerException if {@code singleRange} is {@code null} |
| * @since 1.7 |
| */ |
| public static NumericShaper getShaper(Range singleRange) { |
| return new NumericShaper(singleRange, EnumSet.of(singleRange)); |
| } |
| |
| /** |
| * Returns a contextual shaper for the provided unicode range(s). |
| * Latin-1 (EUROPEAN) digits are converted to the decimal digits |
| * corresponding to the range of the preceding text, if the |
| * range is one of the provided ranges. Multiple ranges are |
| * represented by or-ing the values together, such as, |
| * <code>NumericShaper.ARABIC | NumericShaper.THAI</code>. The |
| * shaper assumes EUROPEAN as the starting context, that is, if |
| * EUROPEAN digits are encountered before any strong directional |
| * text in the string, the context is presumed to be EUROPEAN, and |
| * so the digits will not shape. |
| * @param ranges the specified Unicode ranges |
| * @return a shaper for the specified ranges |
| */ |
| public static NumericShaper getContextualShaper(int ranges) { |
| ranges |= CONTEXTUAL_MASK; |
| return new NumericShaper(EUROPEAN_KEY, ranges); |
| } |
| |
| /** |
| * Returns a contextual shaper for the provided Unicode |
| * range(s). The Latin-1 (EUROPEAN) digits are converted to the |
| * decimal digits corresponding to the range of the preceding |
| * text, if the range is one of the provided ranges. |
| * |
| * <p>The shaper assumes EUROPEAN as the starting context, that |
| * is, if EUROPEAN digits are encountered before any strong |
| * directional text in the string, the context is presumed to be |
| * EUROPEAN, and so the digits will not shape. |
| * |
| * @param ranges the specified Unicode ranges |
| * @return a contextual shaper for the specified ranges |
| * @throws NullPointerException if {@code ranges} is {@code null}. |
| * @since 1.7 |
| */ |
| public static NumericShaper getContextualShaper(Set<Range> ranges) { |
| NumericShaper shaper = new NumericShaper(Range.EUROPEAN, ranges); |
| shaper.mask = CONTEXTUAL_MASK; |
| return shaper; |
| } |
| |
| /** |
| * Returns a contextual shaper for the provided unicode range(s). |
| * Latin-1 (EUROPEAN) digits will be converted to the decimal digits |
| * corresponding to the range of the preceding text, if the |
| * range is one of the provided ranges. Multiple ranges are |
| * represented by or-ing the values together, for example, |
| * <code>NumericShaper.ARABIC | NumericShaper.THAI</code>. The |
| * shaper uses defaultContext as the starting context. |
| * @param ranges the specified Unicode ranges |
| * @param defaultContext the starting context, such as |
| * <code>NumericShaper.EUROPEAN</code> |
| * @return a shaper for the specified Unicode ranges. |
| * @throws IllegalArgumentException if the specified |
| * <code>defaultContext</code> is not a single valid range. |
| */ |
| public static NumericShaper getContextualShaper(int ranges, int defaultContext) { |
| int key = getKeyFromMask(defaultContext); |
| ranges |= CONTEXTUAL_MASK; |
| return new NumericShaper(key, ranges); |
| } |
| |
| /** |
| * Returns a contextual shaper for the provided Unicode range(s). |
| * The Latin-1 (EUROPEAN) digits will be converted to the decimal |
| * digits corresponding to the range of the preceding text, if the |
| * range is one of the provided ranges. The shaper uses {@code |
| * defaultContext} as the starting context. |
| * |
| * @param ranges the specified Unicode ranges |
| * @param defaultContext the starting context, such as |
| * {@code NumericShaper.Range.EUROPEAN} |
| * @return a contextual shaper for the specified Unicode ranges. |
| * @throws NullPointerException |
| * if {@code ranges} or {@code defaultContext} is {@code null} |
| * @since 1.7 |
| */ |
| public static NumericShaper getContextualShaper(Set<Range> ranges, |
| Range defaultContext) { |
| if (defaultContext == null) { |
| throw new NullPointerException(); |
| } |
| NumericShaper shaper = new NumericShaper(defaultContext, ranges); |
| shaper.mask = CONTEXTUAL_MASK; |
| return shaper; |
| } |
| |
| /** |
| * Private constructor. |
| */ |
| private NumericShaper(int key, int mask) { |
| this.key = key; |
| this.mask = mask; |
| } |
| |
| private NumericShaper(Range defaultContext, Set<Range> ranges) { |
| shapingRange = defaultContext; |
| rangeSet = EnumSet.copyOf(ranges); // throws NPE if ranges is null. |
| |
| // Give precedance to EASTERN_ARABIC if both ARABIC and |
| // EASTERN_ARABIC are specified. |
| if (rangeSet.contains(Range.EASTERN_ARABIC) |
| && rangeSet.contains(Range.ARABIC)) { |
| rangeSet.remove(Range.ARABIC); |
| } |
| |
| // As well as the above case, give precedance to TAI_THAM_THAM if both |
| // TAI_THAM_HORA and TAI_THAM_THAM are specified. |
| if (rangeSet.contains(Range.TAI_THAM_THAM) |
| && rangeSet.contains(Range.TAI_THAM_HORA)) { |
| rangeSet.remove(Range.TAI_THAM_HORA); |
| } |
| |
| rangeArray = rangeSet.toArray(new Range[rangeSet.size()]); |
| if (rangeArray.length > BSEARCH_THRESHOLD) { |
| // sort rangeArray for binary search |
| Arrays.sort(rangeArray, |
| new Comparator<Range>() { |
| public int compare(Range s1, Range s2) { |
| return s1.base > s2.base ? 1 : s1.base == s2.base ? 0 : -1; |
| } |
| }); |
| } |
| } |
| |
| /** |
| * Converts the digits in the text that occur between start and |
| * start + count. |
| * @param text an array of characters to convert |
| * @param start the index into <code>text</code> to start |
| * converting |
| * @param count the number of characters in <code>text</code> |
| * to convert |
| * @throws IndexOutOfBoundsException if start or start + count is |
| * out of bounds |
| * @throws NullPointerException if text is null |
| */ |
| public void shape(char[] text, int start, int count) { |
| checkParams(text, start, count); |
| if (isContextual()) { |
| if (rangeSet == null) { |
| shapeContextually(text, start, count, key); |
| } else { |
| shapeContextually(text, start, count, shapingRange); |
| } |
| } else { |
| shapeNonContextually(text, start, count); |
| } |
| } |
| |
| /** |
| * Converts the digits in the text that occur between start and |
| * start + count, using the provided context. |
| * Context is ignored if the shaper is not a contextual shaper. |
| * @param text an array of characters |
| * @param start the index into <code>text</code> to start |
| * converting |
| * @param count the number of characters in <code>text</code> |
| * to convert |
| * @param context the context to which to convert the |
| * characters, such as <code>NumericShaper.EUROPEAN</code> |
| * @throws IndexOutOfBoundsException if start or start + count is |
| * out of bounds |
| * @throws NullPointerException if text is null |
| * @throws IllegalArgumentException if this is a contextual shaper |
| * and the specified <code>context</code> is not a single valid |
| * range. |
| */ |
| public void shape(char[] text, int start, int count, int context) { |
| checkParams(text, start, count); |
| if (isContextual()) { |
| int ctxKey = getKeyFromMask(context); |
| if (rangeSet == null) { |
| shapeContextually(text, start, count, ctxKey); |
| } else { |
| shapeContextually(text, start, count, Range.values()[ctxKey]); |
| } |
| } else { |
| shapeNonContextually(text, start, count); |
| } |
| } |
| |
| /** |
| * Converts the digits in the text that occur between {@code |
| * start} and {@code start + count}, using the provided {@code |
| * context}. {@code Context} is ignored if the shaper is not a |
| * contextual shaper. |
| * |
| * @param text a {@code char} array |
| * @param start the index into {@code text} to start converting |
| * @param count the number of {@code char}s in {@code text} |
| * to convert |
| * @param context the context to which to convert the characters, |
| * such as {@code NumericShaper.Range.EUROPEAN} |
| * @throws IndexOutOfBoundsException |
| * if {@code start} or {@code start + count} is out of bounds |
| * @throws NullPointerException |
| * if {@code text} or {@code context} is null |
| * @since 1.7 |
| */ |
| public void shape(char[] text, int start, int count, Range context) { |
| checkParams(text, start, count); |
| if (context == null) { |
| throw new NullPointerException("context is null"); |
| } |
| |
| if (isContextual()) { |
| if (rangeSet != null) { |
| shapeContextually(text, start, count, context); |
| } else { |
| int key = Range.toRangeIndex(context); |
| if (key >= 0) { |
| shapeContextually(text, start, count, key); |
| } else { |
| shapeContextually(text, start, count, shapingRange); |
| } |
| } |
| } else { |
| shapeNonContextually(text, start, count); |
| } |
| } |
| |
| private void checkParams(char[] text, int start, int count) { |
| if (text == null) { |
| throw new NullPointerException("text is null"); |
| } |
| if ((start < 0) |
| || (start > text.length) |
| || ((start + count) < 0) |
| || ((start + count) > text.length)) { |
| throw new IndexOutOfBoundsException( |
| "bad start or count for text of length " + text.length); |
| } |
| } |
| |
| /** |
| * Returns a <code>boolean</code> indicating whether or not |
| * this shaper shapes contextually. |
| * @return <code>true</code> if this shaper is contextual; |
| * <code>false</code> otherwise. |
| */ |
| public boolean isContextual() { |
| return (mask & CONTEXTUAL_MASK) != 0; |
| } |
| |
| /** |
| * Returns an <code>int</code> that ORs together the values for |
| * all the ranges that will be shaped. |
| * <p> |
| * For example, to check if a shaper shapes to Arabic, you would use the |
| * following: |
| * <blockquote> |
| * <code>if ((shaper.getRanges() & shaper.ARABIC) != 0) { ... </code> |
| * </blockquote> |
| * |
| * <p>Note that this method supports only the bit mask-based |
| * ranges. Call {@link #getRangeSet()} for the enum-based ranges. |
| * |
| * @return the values for all the ranges to be shaped. |
| */ |
| public int getRanges() { |
| return mask & ~CONTEXTUAL_MASK; |
| } |
| |
| /** |
| * Returns a {@code Set} representing all the Unicode ranges in |
| * this {@code NumericShaper} that will be shaped. |
| * |
| * @return all the Unicode ranges to be shaped. |
| * @since 1.7 |
| */ |
| public Set<Range> getRangeSet() { |
| if (rangeSet != null) { |
| return EnumSet.copyOf(rangeSet); |
| } |
| return Range.maskToRangeSet(mask); |
| } |
| |
| /** |
| * Perform non-contextual shaping. |
| */ |
| private void shapeNonContextually(char[] text, int start, int count) { |
| int base; |
| char minDigit = '0'; |
| if (shapingRange != null) { |
| base = shapingRange.getDigitBase(); |
| minDigit += shapingRange.getNumericBase(); |
| } else { |
| base = bases[key]; |
| if (key == ETHIOPIC_KEY) { |
| minDigit++; // Ethiopic doesn't use decimal zero |
| } |
| } |
| for (int i = start, e = start + count; i < e; ++i) { |
| char c = text[i]; |
| if (c >= minDigit && c <= '\u0039') { |
| text[i] = (char)(c + base); |
| } |
| } |
| } |
| |
| /** |
| * Perform contextual shaping. |
| * Synchronized to protect caches used in getContextKey. |
| */ |
| private synchronized void shapeContextually(char[] text, int start, int count, int ctxKey) { |
| |
| // if we don't support this context, then don't shape |
| if ((mask & (1<<ctxKey)) == 0) { |
| ctxKey = EUROPEAN_KEY; |
| } |
| int lastkey = ctxKey; |
| |
| int base = bases[ctxKey]; |
| char minDigit = ctxKey == ETHIOPIC_KEY ? '1' : '0'; // Ethiopic doesn't use decimal zero |
| |
| synchronized (NumericShaper.class) { |
| for (int i = start, e = start + count; i < e; ++i) { |
| char c = text[i]; |
| if (c >= minDigit && c <= '\u0039') { |
| text[i] = (char)(c + base); |
| } |
| |
| if (isStrongDirectional(c)) { |
| int newkey = getContextKey(c); |
| if (newkey != lastkey) { |
| lastkey = newkey; |
| |
| ctxKey = newkey; |
| if (((mask & EASTERN_ARABIC) != 0) && |
| (ctxKey == ARABIC_KEY || |
| ctxKey == EASTERN_ARABIC_KEY)) { |
| ctxKey = EASTERN_ARABIC_KEY; |
| } else if (((mask & ARABIC) != 0) && |
| (ctxKey == ARABIC_KEY || |
| ctxKey == EASTERN_ARABIC_KEY)) { |
| ctxKey = ARABIC_KEY; |
| } else if ((mask & (1<<ctxKey)) == 0) { |
| ctxKey = EUROPEAN_KEY; |
| } |
| |
| base = bases[ctxKey]; |
| |
| minDigit = ctxKey == ETHIOPIC_KEY ? '1' : '0'; // Ethiopic doesn't use decimal zero |
| } |
| } |
| } |
| } |
| } |
| |
| private void shapeContextually(char[] text, int start, int count, Range ctxKey) { |
| // if we don't support the specified context, then don't shape. |
| if (ctxKey == null || !rangeSet.contains(ctxKey)) { |
| ctxKey = Range.EUROPEAN; |
| } |
| |
| Range lastKey = ctxKey; |
| int base = ctxKey.getDigitBase(); |
| char minDigit = (char)('0' + ctxKey.getNumericBase()); |
| final int end = start + count; |
| for (int i = start; i < end; ++i) { |
| char c = text[i]; |
| if (c >= minDigit && c <= '9') { |
| text[i] = (char)(c + base); |
| continue; |
| } |
| if (isStrongDirectional(c)) { |
| ctxKey = rangeForCodePoint(c); |
| if (ctxKey != lastKey) { |
| lastKey = ctxKey; |
| base = ctxKey.getDigitBase(); |
| minDigit = (char)('0' + ctxKey.getNumericBase()); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Returns a hash code for this shaper. |
| * @return this shaper's hash code. |
| * @see java.lang.Object#hashCode |
| */ |
| public int hashCode() { |
| int hash = mask; |
| if (rangeSet != null) { |
| // Use the CONTEXTUAL_MASK bit only for the enum-based |
| // NumericShaper. A deserialized NumericShaper might have |
| // bit masks. |
| hash &= CONTEXTUAL_MASK; |
| hash ^= rangeSet.hashCode(); |
| } |
| return hash; |
| } |
| |
| /** |
| * Returns {@code true} if the specified object is an instance of |
| * <code>NumericShaper</code> and shapes identically to this one, |
| * regardless of the range representations, the bit mask or the |
| * enum. For example, the following code produces {@code "true"}. |
| * <blockquote><pre> |
| * NumericShaper ns1 = NumericShaper.getShaper(NumericShaper.ARABIC); |
| * NumericShaper ns2 = NumericShaper.getShaper(NumericShaper.Range.ARABIC); |
| * System.out.println(ns1.equals(ns2)); |
| * </pre></blockquote> |
| * |
| * @param o the specified object to compare to this |
| * <code>NumericShaper</code> |
| * @return <code>true</code> if <code>o</code> is an instance |
| * of <code>NumericShaper</code> and shapes in the same way; |
| * <code>false</code> otherwise. |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| public boolean equals(Object o) { |
| if (o != null) { |
| try { |
| NumericShaper rhs = (NumericShaper)o; |
| if (rangeSet != null) { |
| if (rhs.rangeSet != null) { |
| return isContextual() == rhs.isContextual() |
| && rangeSet.equals(rhs.rangeSet) |
| && shapingRange == rhs.shapingRange; |
| } |
| return isContextual() == rhs.isContextual() |
| && rangeSet.equals(Range.maskToRangeSet(rhs.mask)) |
| && shapingRange == Range.indexToRange(rhs.key); |
| } else if (rhs.rangeSet != null) { |
| Set<Range> rset = Range.maskToRangeSet(mask); |
| Range srange = Range.indexToRange(key); |
| return isContextual() == rhs.isContextual() |
| && rset.equals(rhs.rangeSet) |
| && srange == rhs.shapingRange; |
| } |
| return rhs.mask == mask && rhs.key == key; |
| } |
| catch (ClassCastException e) { |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Returns a <code>String</code> that describes this shaper. This method |
| * is used for debugging purposes only. |
| * @return a <code>String</code> describing this shaper. |
| */ |
| public String toString() { |
| StringBuilder buf = new StringBuilder(super.toString()); |
| |
| buf.append("[contextual:").append(isContextual()); |
| |
| String[] keyNames = null; |
| if (isContextual()) { |
| buf.append(", context:"); |
| buf.append(shapingRange == null ? Range.values()[key] : shapingRange); |
| } |
| |
| if (rangeSet == null) { |
| buf.append(", range(s): "); |
| boolean first = true; |
| for (int i = 0; i < NUM_KEYS; ++i) { |
| if ((mask & (1 << i)) != 0) { |
| if (first) { |
| first = false; |
| } else { |
| buf.append(", "); |
| } |
| buf.append(Range.values()[i]); |
| } |
| } |
| } else { |
| buf.append(", range set: ").append(rangeSet); |
| } |
| buf.append(']'); |
| |
| return buf.toString(); |
| } |
| |
| /** |
| * Returns the index of the high bit in value (assuming le, actually |
| * power of 2 >= value). value must be positive. |
| */ |
| private static int getHighBit(int value) { |
| if (value <= 0) { |
| return -32; |
| } |
| |
| int bit = 0; |
| |
| if (value >= 1 << 16) { |
| value >>= 16; |
| bit += 16; |
| } |
| |
| if (value >= 1 << 8) { |
| value >>= 8; |
| bit += 8; |
| } |
| |
| if (value >= 1 << 4) { |
| value >>= 4; |
| bit += 4; |
| } |
| |
| if (value >= 1 << 2) { |
| value >>= 2; |
| bit += 2; |
| } |
| |
| if (value >= 1 << 1) { |
| bit += 1; |
| } |
| |
| return bit; |
| } |
| |
| /** |
| * fast binary search over subrange of array. |
| */ |
| private static int search(int value, int[] array, int start, int length) |
| { |
| int power = 1 << getHighBit(length); |
| int extra = length - power; |
| int probe = power; |
| int index = start; |
| |
| if (value >= array[index + extra]) { |
| index += extra; |
| } |
| |
| while (probe > 1) { |
| probe >>= 1; |
| |
| if (value >= array[index + probe]) { |
| index += probe; |
| } |
| } |
| |
| return index; |
| } |
| |
| /** |
| * Converts the {@code NumericShaper.Range} enum-based parameters, |
| * if any, to the bit mask-based counterparts and writes this |
| * object to the {@code stream}. Any enum constants that have no |
| * bit mask-based counterparts are ignored in the conversion. |
| * |
| * @param stream the output stream to write to |
| * @throws IOException if an I/O error occurs while writing to {@code stream} |
| * @since 1.7 |
| */ |
| private void writeObject(ObjectOutputStream stream) throws IOException { |
| if (shapingRange != null) { |
| int index = Range.toRangeIndex(shapingRange); |
| if (index >= 0) { |
| key = index; |
| } |
| } |
| if (rangeSet != null) { |
| mask |= Range.toRangeMask(rangeSet); |
| } |
| stream.defaultWriteObject(); |
| } |
| } |
