| /* |
| ******************************************************************************* |
| * Copyright (C) 1996-2003, International Business Machines Corporation and * |
| * others. All Rights Reserved. * |
| ******************************************************************************* |
| */ |
| package com.ibm.icu.text; |
| |
| import java.text.*; |
| import com.ibm.icu.impl.Utility; |
| import com.ibm.icu.lang.*; |
| import com.ibm.icu.impl.UCharacterProperty; |
| import com.ibm.icu.impl.UPropertyAliases; |
| import com.ibm.icu.impl.SortedSetRelation; |
| import com.ibm.icu.impl.RuleCharacterIterator; |
| import com.ibm.icu.util.VersionInfo; |
| import java.util.Map; |
| import java.util.HashMap; |
| import java.util.TreeSet; |
| import java.util.Iterator; |
| import java.util.Collection; |
| |
| /** |
| * A mutable set of Unicode characters and multicharacter strings. Objects of this class |
| * represent <em>character classes</em> used in regular expressions. |
| * A character specifies a subset of Unicode code points. Legal |
| * code points are U+0000 to U+10FFFF, inclusive. |
| * |
| * <p>The UnicodeSet class is not designed to be subclassed. |
| * |
| * <p><code>UnicodeSet</code> supports two APIs. The first is the |
| * <em>operand</em> API that allows the caller to modify the value of |
| * a <code>UnicodeSet</code> object. It conforms to Java 2's |
| * <code>java.util.Set</code> interface, although |
| * <code>UnicodeSet</code> does not actually implement that |
| * interface. All methods of <code>Set</code> are supported, with the |
| * modification that they take a character range or single character |
| * instead of an <code>Object</code>, and they take a |
| * <code>UnicodeSet</code> instead of a <code>Collection</code>. The |
| * operand API may be thought of in terms of boolean logic: a boolean |
| * OR is implemented by <code>add</code>, a boolean AND is implemented |
| * by <code>retain</code>, a boolean XOR is implemented by |
| * <code>complement</code> taking an argument, and a boolean NOT is |
| * implemented by <code>complement</code> with no argument. In terms |
| * of traditional set theory function names, <code>add</code> is a |
| * union, <code>retain</code> is an intersection, <code>remove</code> |
| * is an asymmetric difference, and <code>complement</code> with no |
| * argument is a set complement with respect to the superset range |
| * <code>MIN_VALUE-MAX_VALUE</code> |
| * |
| * <p>The second API is the |
| * <code>applyPattern()</code>/<code>toPattern()</code> API from the |
| * <code>java.text.Format</code>-derived classes. Unlike the |
| * methods that add characters, add categories, and control the logic |
| * of the set, the method <code>applyPattern()</code> sets all |
| * attributes of a <code>UnicodeSet</code> at once, based on a |
| * string pattern. |
| * |
| * <p><b>Pattern syntax</b></p> |
| * |
| * Patterns are accepted by the constructors and the |
| * <code>applyPattern()</code> methods and returned by the |
| * <code>toPattern()</code> method. These patterns follow a syntax |
| * similar to that employed by version 8 regular expression character |
| * classes. Here are some simple examples: |
| * |
| * <blockquote> |
| * <table> |
| * <tr align="top"> |
| * <td nowrap valign="top" align="left"><code>[]</code></td> |
| * <td valign="top">No characters</td> |
| * </tr><tr align="top"> |
| * <td nowrap valign="top" align="left"><code>[a]</code></td> |
| * <td valign="top">The character 'a'</td> |
| * </tr><tr align="top"> |
| * <td nowrap valign="top" align="left"><code>[ae]</code></td> |
| * <td valign="top">The characters 'a' and 'e'</td> |
| * </tr> |
| * <tr> |
| * <td nowrap valign="top" align="left"><code>[a-e]</code></td> |
| * <td valign="top">The characters 'a' through 'e' inclusive, in Unicode code |
| * point order</td> |
| * </tr> |
| * <tr> |
| * <td nowrap valign="top" align="left"><code>[\\u4E01]</code></td> |
| * <td valign="top">The character U+4E01</td> |
| * </tr> |
| * <tr> |
| * <td nowrap valign="top" align="left"><code>[a{ab}{ac}]</code></td> |
| * <td valign="top">The character 'a' and the multicharacter strings "ab" and |
| * "ac"</td> |
| * </tr> |
| * <tr> |
| * <td nowrap valign="top" align="left"><code>[\p{Lu}]</code></td> |
| * <td valign="top">All characters in the general category Uppercase Letter</td> |
| * </tr> |
| * </table> |
| * </blockquote> |
| * |
| * Any character may be preceded by a backslash in order to remove any special |
| * meaning. White space characters, as defined by UCharacterProperty.isRuleWhiteSpace(), are |
| * ignored, unless they are escaped. |
| * |
| * <p>Property patterns specify a set of characters having a certain |
| * property as defined by the Unicode standard. Both the POSIX-like |
| * "[:Lu:]" and the Perl-like syntax "\p{Lu}" are recognized. For a |
| * complete list of supported property patterns, see the User's Guide |
| * for UnicodeSet at |
| * <a href="http://oss.software.ibm.com/icu/userguide/unicodeSet.html"> |
| * http://oss.software.ibm.com/icu/userguide/unicodeSet.html</a>. |
| * Actual determination of property data is defined by the underlying |
| * Unicode database as implemented by UCharacter. |
| * |
| * <p>Patterns specify individual characters, ranges of characters, and |
| * Unicode property sets. When elements are concatenated, they |
| * specify their union. To complement a set, place a '^' immediately |
| * after the opening '['. Property patterns are inverted by modifying |
| * their delimiters; "[:^foo]" and "\P{foo}". In any other location, |
| * '^' has no special meaning. |
| * |
| * <p>Ranges are indicated by placing two a '-' between two |
| * characters, as in "a-z". This specifies the range of all |
| * characters from the left to the right, in Unicode order. If the |
| * left character is greater than or equal to the |
| * right character it is a syntax error. If a '-' occurs as the first |
| * character after the opening '[' or '[^', or if it occurs as the |
| * last character before the closing ']', then it is taken as a |
| * literal. Thus "[a\\-b]", "[-ab]", and "[ab-]" all indicate the same |
| * set of three characters, 'a', 'b', and '-'. |
| * |
| * <p>Sets may be intersected using the '&' operator or the asymmetric |
| * set difference may be taken using the '-' operator, for example, |
| * "[[:L:]&[\\u0000-\\u0FFF]]" indicates the set of all Unicode letters |
| * with values less than 4096. Operators ('&' and '|') have equal |
| * precedence and bind left-to-right. Thus |
| * "[[:L:]-[a-z]-[\\u0100-\\u01FF]]" is equivalent to |
| * "[[[:L:]-[a-z]]-[\\u0100-\\u01FF]]". This only really matters for |
| * difference; intersection is commutative. |
| * |
| * <table> |
| * <tr valign=top><td nowrap><code>[a]</code><td>The set containing 'a' |
| * <tr valign=top><td nowrap><code>[a-z]</code><td>The set containing 'a' |
| * through 'z' and all letters in between, in Unicode order |
| * <tr valign=top><td nowrap><code>[^a-z]</code><td>The set containing |
| * all characters but 'a' through 'z', |
| * that is, U+0000 through 'a'-1 and 'z'+1 through U+10FFFF |
| * <tr valign=top><td nowrap><code>[[<em>pat1</em>][<em>pat2</em>]]</code> |
| * <td>The union of sets specified by <em>pat1</em> and <em>pat2</em> |
| * <tr valign=top><td nowrap><code>[[<em>pat1</em>]&[<em>pat2</em>]]</code> |
| * <td>The intersection of sets specified by <em>pat1</em> and <em>pat2</em> |
| * <tr valign=top><td nowrap><code>[[<em>pat1</em>]-[<em>pat2</em>]]</code> |
| * <td>The asymmetric difference of sets specified by <em>pat1</em> and |
| * <em>pat2</em> |
| * <tr valign=top><td nowrap><code>[:Lu:] or \p{Lu}</code> |
| * <td>The set of characters having the specified |
| * Unicode property; in |
| * this case, Unicode uppercase letters |
| * <tr valign=top><td nowrap><code>[:^Lu:] or \P{Lu}</code> |
| * <td>The set of characters <em>not</em> having the given |
| * Unicode property |
| * </table> |
| * |
| * <p><b>Warning</b>: you cannot add an empty string ("") to a UnicodeSet.</p> |
| * |
| * <p><b>Formal syntax</b></p> |
| * |
| * <blockquote> |
| * <table> |
| * <tr align="top"> |
| * <td nowrap valign="top" align="right"><code>pattern := </code></td> |
| * <td valign="top"><code>('[' '^'? item* ']') | |
| * property</code></td> |
| * </tr> |
| * <tr align="top"> |
| * <td nowrap valign="top" align="right"><code>item := </code></td> |
| * <td valign="top"><code>char | (char '-' char) | pattern-expr<br> |
| * </code></td> |
| * </tr> |
| * <tr align="top"> |
| * <td nowrap valign="top" align="right"><code>pattern-expr := </code></td> |
| * <td valign="top"><code>pattern | pattern-expr pattern | |
| * pattern-expr op pattern<br> |
| * </code></td> |
| * </tr> |
| * <tr align="top"> |
| * <td nowrap valign="top" align="right"><code>op := </code></td> |
| * <td valign="top"><code>'&' | '-'<br> |
| * </code></td> |
| * </tr> |
| * <tr align="top"> |
| * <td nowrap valign="top" align="right"><code>special := </code></td> |
| * <td valign="top"><code>'[' | ']' | '-'<br> |
| * </code></td> |
| * </tr> |
| * <tr align="top"> |
| * <td nowrap valign="top" align="right"><code>char := </code></td> |
| * <td valign="top"><em>any character that is not</em><code> special<br> |
| * | ('\\' </code><em>any character</em><code>)<br> |
| * | ('\u' hex hex hex hex)<br> |
| * </code></td> |
| * </tr> |
| * <tr align="top"> |
| * <td nowrap valign="top" align="right"><code>hex := </code></td> |
| * <td valign="top"><em>any character for which |
| * </em><code>Character.digit(c, 16)</code><em> |
| * returns a non-negative result</em></td> |
| * </tr> |
| * <tr> |
| * <td nowrap valign="top" align="right"><code>property := </code></td> |
| * <td valign="top"><em>a Unicode property set pattern</td> |
| * </tr> |
| * </table> |
| * <br> |
| * <table border="1"> |
| * <tr> |
| * <td>Legend: <table> |
| * <tr> |
| * <td nowrap valign="top"><code>a := b</code></td> |
| * <td width="20" valign="top"> </td> |
| * <td valign="top"><code>a</code> may be replaced by <code>b</code> </td> |
| * </tr> |
| * <tr> |
| * <td nowrap valign="top"><code>a?</code></td> |
| * <td valign="top"></td> |
| * <td valign="top">zero or one instance of <code>a</code><br> |
| * </td> |
| * </tr> |
| * <tr> |
| * <td nowrap valign="top"><code>a*</code></td> |
| * <td valign="top"></td> |
| * <td valign="top">one or more instances of <code>a</code><br> |
| * </td> |
| * </tr> |
| * <tr> |
| * <td nowrap valign="top"><code>a | b</code></td> |
| * <td valign="top"></td> |
| * <td valign="top">either <code>a</code> or <code>b</code><br> |
| * </td> |
| * </tr> |
| * <tr> |
| * <td nowrap valign="top"><code>'a'</code></td> |
| * <td valign="top"></td> |
| * <td valign="top">the literal string between the quotes </td> |
| * </tr> |
| * </table> |
| * </td> |
| * </tr> |
| * </table> |
| * </blockquote> |
| * |
| * @author Alan Liu |
| * @stable ICU 2.0 |
| */ |
| public class UnicodeSet extends UnicodeFilter { |
| |
| private static final int LOW = 0x000000; // LOW <= all valid values. ZERO for codepoints |
| private static final int HIGH = 0x110000; // HIGH > all valid values. 10000 for code units. |
| // 110000 for codepoints |
| |
| /** |
| * Minimum value that can be stored in a UnicodeSet. |
| * @stable ICU 2.0 |
| */ |
| public static final int MIN_VALUE = LOW; |
| |
| /** |
| * Maximum value that can be stored in a UnicodeSet. |
| * @stable ICU 2.0 |
| */ |
| public static final int MAX_VALUE = HIGH - 1; |
| |
| private int len; // length used; list may be longer to minimize reallocs |
| private int[] list; // MUST be terminated with HIGH |
| private int[] rangeList; // internal buffer |
| private int[] buffer; // internal buffer |
| |
| // NOTE: normally the field should be of type SortedSet; but that is missing a public clone!! |
| // is not private so that UnicodeSetIterator can get access |
| TreeSet strings = new TreeSet(); |
| |
| /** |
| * The pattern representation of this set. This may not be the |
| * most economical pattern. It is the pattern supplied to |
| * applyPattern(), with variables substituted and whitespace |
| * removed. For sets constructed without applyPattern(), or |
| * modified using the non-pattern API, this string will be null, |
| * indicating that toPattern() must generate a pattern |
| * representation from the inversion list. |
| */ |
| private String pat = null; |
| |
| private static final int START_EXTRA = 16; // initial storage. Must be >= 0 |
| private static final int GROW_EXTRA = START_EXTRA; // extra amount for growth. Must be >= 0 |
| |
| // Special property set IDs |
| private static final String ANY_ID = "ANY"; // [\u0000-\U0010FFFF] |
| private static final String ASCII_ID = "ASCII"; // [\u0000-\u007F] |
| |
| /** |
| * A set of all characters _except_ the second through last characters of |
| * certain ranges. These ranges are ranges of characters whose |
| * properties are all exactly alike, e.g. CJK Ideographs from |
| * U+4E00 to U+9FA5. |
| */ |
| private static UnicodeSet INCLUSIONS = null; |
| |
| //---------------------------------------------------------------- |
| // Public API |
| //---------------------------------------------------------------- |
| |
| /** |
| * Constructs an empty set. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet() { |
| list = new int[1 + START_EXTRA]; |
| list[len++] = HIGH; |
| } |
| |
| /** |
| * Constructs a copy of an existing set. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet(UnicodeSet other) { |
| set(other); |
| } |
| |
| /** |
| * Constructs a set containing the given range. If <code>end > |
| * start</code> then an empty set is created. |
| * |
| * @param start first character, inclusive, of range |
| * @param end last character, inclusive, of range |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet(int start, int end) { |
| this(); |
| complement(start, end); |
| } |
| |
| /** |
| * Constructs a set from the given pattern. See the class description |
| * for the syntax of the pattern language. Whitespace is ignored. |
| * @param pattern a string specifying what characters are in the set |
| * @exception java.lang.IllegalArgumentException if the pattern contains |
| * a syntax error. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet(String pattern) { |
| this(pattern, true); |
| } |
| |
| /** |
| * Constructs a set from the given pattern. See the class description |
| * for the syntax of the pattern language. |
| * @param pattern a string specifying what characters are in the set |
| * @param ignoreWhitespace if true, ignore characters for which |
| * UCharacterProperty.isRuleWhiteSpace() returns true |
| * @exception java.lang.IllegalArgumentException if the pattern contains |
| * a syntax error. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet(String pattern, boolean ignoreWhitespace) { |
| this(pattern, ignoreWhitespace ? IGNORE_SPACE : 0); |
| } |
| |
| /** |
| * Constructs a set from the given pattern. See the class description |
| * for the syntax of the pattern language. |
| * @param pattern a string specifying what characters are in the set |
| * @param options a bitmask indicating which options to apply. |
| * Valid options are IGNORE_SPACE and CASE. |
| * @exception java.lang.IllegalArgumentException if the pattern contains |
| * a syntax error. |
| * @internal |
| */ |
| public UnicodeSet(String pattern, int options) { |
| this(); |
| applyPattern(pattern, options); |
| } |
| |
| /** |
| * Constructs a set from the given pattern. See the class description |
| * for the syntax of the pattern language. |
| * @param pattern a string specifying what characters are in the set |
| * @param pos on input, the position in pattern at which to start parsing. |
| * On output, the position after the last character parsed. |
| * @param symbols a symbol table mapping variables to char[] arrays |
| * and chars to UnicodeSets |
| * @exception java.lang.IllegalArgumentException if the pattern |
| * contains a syntax error. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet(String pattern, ParsePosition pos, SymbolTable symbols) { |
| this(); |
| applyPattern(pattern, pos, symbols, IGNORE_SPACE); |
| } |
| |
| /** |
| * Return a new set that is equivalent to this one. |
| * @stable ICU 2.0 |
| */ |
| public Object clone() { |
| return new UnicodeSet(this); |
| } |
| |
| /** |
| * Make this object represent the range <code>start - end</code>. |
| * If <code>end > start</code> then this object is set to an |
| * an empty range. |
| * |
| * @param start first character in the set, inclusive |
| * @param end last character in the set, inclusive |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet set(int start, int end) { |
| clear(); |
| complement(start, end); |
| return this; |
| } |
| |
| /** |
| * Make this object represent the same set as <code>other</code>. |
| * @param other a <code>UnicodeSet</code> whose value will be |
| * copied to this object |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet set(UnicodeSet other) { |
| list = (int[]) other.list.clone(); |
| len = other.len; |
| pat = other.pat; |
| strings = (TreeSet)other.strings.clone(); |
| return this; |
| } |
| |
| /** |
| * Modifies this set to represent the set specified by the given pattern. |
| * See the class description for the syntax of the pattern language. |
| * Whitespace is ignored. |
| * @param pattern a string specifying what characters are in the set |
| * @exception java.lang.IllegalArgumentException if the pattern |
| * contains a syntax error. |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet applyPattern(String pattern) { |
| return applyPattern(pattern, true); |
| } |
| |
| /** |
| * Modifies this set to represent the set specified by the given pattern, |
| * optionally ignoring whitespace. |
| * See the class description for the syntax of the pattern language. |
| * @param pattern a string specifying what characters are in the set |
| * @param ignoreWhitespace if true then characters for which |
| * UCharacterProperty.isRuleWhiteSpace() returns true are ignored |
| * @exception java.lang.IllegalArgumentException if the pattern |
| * contains a syntax error. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet applyPattern(String pattern, boolean ignoreWhitespace) { |
| return applyPattern(pattern, ignoreWhitespace ? IGNORE_SPACE : 0); |
| } |
| |
| /** |
| * Modifies this set to represent the set specified by the given pattern, |
| * optionally ignoring whitespace. |
| * See the class description for the syntax of the pattern language. |
| * @param pattern a string specifying what characters are in the set |
| * @param options a bitmask indicating which options to apply. |
| * Valid options are IGNORE_SPACE and CASE. |
| * @exception java.lang.IllegalArgumentException if the pattern |
| * contains a syntax error. |
| * @internal |
| */ |
| public UnicodeSet applyPattern(String pattern, int options) { |
| ParsePosition pos = new ParsePosition(0); |
| applyPattern(pattern, pos, null, options); |
| |
| int i = pos.getIndex(); |
| |
| // Skip over trailing whitespace |
| if ((options & IGNORE_SPACE) != 0) { |
| i = Utility.skipWhitespace(pattern, i); |
| } |
| |
| if (i != pattern.length()) { |
| throw new IllegalArgumentException("Parse of \"" + pattern + |
| "\" failed at " + i); |
| } |
| return this; |
| } |
| |
| /** |
| * Return true if the given position, in the given pattern, appears |
| * to be the start of a UnicodeSet pattern. |
| * @stable ICU 2.0 |
| */ |
| public static boolean resemblesPattern(String pattern, int pos) { |
| return ((pos+1) < pattern.length() && |
| pattern.charAt(pos) == '[') || |
| resemblesPropertyPattern(pattern, pos); |
| } |
| |
| /** |
| * Append the <code>toPattern()</code> representation of a |
| * string to the given <code>StringBuffer</code>. |
| */ |
| private static void _appendToPat(StringBuffer buf, String s, boolean escapeUnprintable) { |
| for (int i = 0; i < s.length(); i += UTF16.getCharCount(i)) { |
| _appendToPat(buf, UTF16.charAt(s, i), escapeUnprintable); |
| } |
| } |
| |
| /** |
| * Append the <code>toPattern()</code> representation of a |
| * character to the given <code>StringBuffer</code>. |
| */ |
| private static void _appendToPat(StringBuffer buf, int c, boolean escapeUnprintable) { |
| if (escapeUnprintable && Utility.isUnprintable(c)) { |
| // Use hex escape notation (<backslash>uxxxx or <backslash>Uxxxxxxxx) for anything |
| // unprintable |
| if (Utility.escapeUnprintable(buf, c)) { |
| return; |
| } |
| } |
| // Okay to let ':' pass through |
| switch (c) { |
| case '[': // SET_OPEN: |
| case ']': // SET_CLOSE: |
| case '-': // HYPHEN: |
| case '^': // COMPLEMENT: |
| case '&': // INTERSECTION: |
| case '\\': //BACKSLASH: |
| case '{': |
| case '}': |
| case '$': |
| case ':': |
| buf.append('\\'); |
| break; |
| default: |
| // Escape whitespace |
| if (UCharacterProperty.isRuleWhiteSpace(c)) { |
| buf.append('\\'); |
| } |
| break; |
| } |
| UTF16.append(buf, c); |
| } |
| |
| /** |
| * Returns a string representation of this set. If the result of |
| * calling this function is passed to a UnicodeSet constructor, it |
| * will produce another set that is equal to this one. |
| * @stable ICU 2.0 |
| */ |
| public String toPattern(boolean escapeUnprintable) { |
| StringBuffer result = new StringBuffer(); |
| return _toPattern(result, escapeUnprintable).toString(); |
| } |
| |
| /** |
| * Append a string representation of this set to result. This will be |
| * a cleaned version of the string passed to applyPattern(), if there |
| * is one. Otherwise it will be generated. |
| */ |
| private StringBuffer _toPattern(StringBuffer result, |
| boolean escapeUnprintable) { |
| if (pat != null) { |
| int i; |
| int backslashCount = 0; |
| for (i=0; i<pat.length(); ) { |
| int c = UTF16.charAt(pat, i); |
| i += UTF16.getCharCount(c); |
| if (escapeUnprintable && Utility.isUnprintable(c)) { |
| // If the unprintable character is preceded by an odd |
| // number of backslashes, then it has been escaped. |
| // Before unescaping it, we delete the final |
| // backslash. |
| if ((backslashCount % 2) == 1) { |
| result.setLength(result.length() - 1); |
| } |
| Utility.escapeUnprintable(result, c); |
| backslashCount = 0; |
| } else { |
| UTF16.append(result, c); |
| if (c == '\\') { |
| ++backslashCount; |
| } else { |
| backslashCount = 0; |
| } |
| } |
| } |
| return result; |
| } |
| |
| return _generatePattern(result, escapeUnprintable); |
| } |
| |
| /** |
| * Generate and append a string representation of this set to result. |
| * This does not use this.pat, the cleaned up copy of the string |
| * passed to applyPattern(). |
| * @stable ICU 2.0 |
| */ |
| public StringBuffer _generatePattern(StringBuffer result, |
| boolean escapeUnprintable) { |
| result.append('['); |
| |
| // // Check against the predefined categories. We implicitly build |
| // // up ALL category sets the first time toPattern() is called. |
| // for (int cat=0; cat<CATEGORY_COUNT; ++cat) { |
| // if (this.equals(getCategorySet(cat))) { |
| // result.append(':'); |
| // result.append(CATEGORY_NAMES.substring(cat*2, cat*2+2)); |
| // return result.append(":]"); |
| // } |
| // } |
| |
| int count = getRangeCount(); |
| |
| // If the set contains at least 2 intervals and includes both |
| // MIN_VALUE and MAX_VALUE, then the inverse representation will |
| // be more economical. |
| if (count > 1 && |
| getRangeStart(0) == MIN_VALUE && |
| getRangeEnd(count-1) == MAX_VALUE) { |
| |
| // Emit the inverse |
| result.append('^'); |
| |
| for (int i = 1; i < count; ++i) { |
| int start = getRangeEnd(i-1)+1; |
| int end = getRangeStart(i)-1; |
| _appendToPat(result, start, escapeUnprintable); |
| if (start != end) { |
| if ((start+1) != end) { |
| result.append('-'); |
| } |
| _appendToPat(result, end, escapeUnprintable); |
| } |
| } |
| } |
| |
| // Default; emit the ranges as pairs |
| else { |
| for (int i = 0; i < count; ++i) { |
| int start = getRangeStart(i); |
| int end = getRangeEnd(i); |
| _appendToPat(result, start, escapeUnprintable); |
| if (start != end) { |
| if ((start+1) != end) { |
| result.append('-'); |
| } |
| _appendToPat(result, end, escapeUnprintable); |
| } |
| } |
| } |
| |
| if (strings.size() > 0) { |
| Iterator it = strings.iterator(); |
| while (it.hasNext()) { |
| result.append('{'); |
| _appendToPat(result, (String) it.next(), escapeUnprintable); |
| result.append('}'); |
| } |
| } |
| return result.append(']'); |
| } |
| |
| /** |
| * Returns the number of elements in this set (its cardinality), |
| * <em>n</em>, where <code>0 <= </code><em>n</em><code> <= 65536</code>. |
| * |
| * @return the number of elements in this set (its cardinality). |
| * @stable ICU 2.0 |
| */ |
| public int size() { |
| int n = 0; |
| int count = getRangeCount(); |
| for (int i = 0; i < count; ++i) { |
| n += getRangeEnd(i) - getRangeStart(i) + 1; |
| } |
| return n + strings.size(); |
| } |
| |
| /** |
| * Returns <tt>true</tt> if this set contains no elements. |
| * |
| * @return <tt>true</tt> if this set contains no elements. |
| * @stable ICU 2.0 |
| */ |
| public boolean isEmpty() { |
| return len == 1 && strings.size() == 0; |
| } |
| |
| /** |
| * Implementation of UnicodeMatcher API. Returns <tt>true</tt> if |
| * this set contains any character whose low byte is the given |
| * value. This is used by <tt>RuleBasedTransliterator</tt> for |
| * indexing. |
| * @stable ICU 2.0 |
| */ |
| public boolean matchesIndexValue(int v) { |
| /* The index value v, in the range [0,255], is contained in this set if |
| * it is contained in any pair of this set. Pairs either have the high |
| * bytes equal, or unequal. If the high bytes are equal, then we have |
| * aaxx..aayy, where aa is the high byte. Then v is contained if xx <= |
| * v <= yy. If the high bytes are unequal we have aaxx..bbyy, bb>aa. |
| * Then v is contained if xx <= v || v <= yy. (This is identical to the |
| * time zone month containment logic.) |
| */ |
| for (int i=0; i<getRangeCount(); ++i) { |
| int low = getRangeStart(i); |
| int high = getRangeEnd(i); |
| if ((low & ~0xFF) == (high & ~0xFF)) { |
| if ((low & 0xFF) <= v && v <= (high & 0xFF)) { |
| return true; |
| } |
| } else if ((low & 0xFF) <= v || v <= (high & 0xFF)) { |
| return true; |
| } |
| } |
| if (strings.size() != 0) { |
| Iterator it = strings.iterator(); |
| while (it.hasNext()) { |
| String s = (String) it.next(); |
| //if (s.length() == 0) { |
| // // Empty strings match everything |
| // return true; |
| //} |
| // assert(s.length() != 0); // We enforce this elsewhere |
| int c = UTF16.charAt(s, 0); |
| if ((c & 0xFF) == v) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Implementation of UnicodeMatcher.matches(). Always matches the |
| * longest possible multichar string. |
| * @stable ICU 2.0 |
| */ |
| public int matches(Replaceable text, |
| int[] offset, |
| int limit, |
| boolean incremental) { |
| |
| if (offset[0] == limit) { |
| // Strings, if any, have length != 0, so we don't worry |
| // about them here. If we ever allow zero-length strings |
| // we much check for them here. |
| if (contains(UnicodeMatcher.ETHER)) { |
| return incremental ? U_PARTIAL_MATCH : U_MATCH; |
| } else { |
| return U_MISMATCH; |
| } |
| } else { |
| if (strings.size() != 0) { // try strings first |
| |
| // might separate forward and backward loops later |
| // for now they are combined |
| |
| // TODO Improve efficiency of this, at least in the forward |
| // direction, if not in both. In the forward direction we |
| // can assume the strings are sorted. |
| |
| Iterator it = strings.iterator(); |
| boolean forward = offset[0] < limit; |
| |
| // firstChar is the leftmost char to match in the |
| // forward direction or the rightmost char to match in |
| // the reverse direction. |
| char firstChar = text.charAt(offset[0]); |
| |
| // If there are multiple strings that can match we |
| // return the longest match. |
| int highWaterLength = 0; |
| |
| while (it.hasNext()) { |
| String trial = (String) it.next(); |
| |
| //if (trial.length() == 0) { |
| // return U_MATCH; // null-string always matches |
| //} |
| // assert(trial.length() != 0); // We ensure this elsewhere |
| |
| char c = trial.charAt(forward ? 0 : trial.length() - 1); |
| |
| // Strings are sorted, so we can optimize in the |
| // forward direction. |
| if (forward && c > firstChar) break; |
| if (c != firstChar) continue; |
| |
| int len = matchRest(text, offset[0], limit, trial); |
| |
| if (incremental) { |
| int maxLen = forward ? limit-offset[0] : offset[0]-limit; |
| if (len == maxLen) { |
| // We have successfully matched but only up to limit. |
| return U_PARTIAL_MATCH; |
| } |
| } |
| |
| if (len == trial.length()) { |
| // We have successfully matched the whole string. |
| if (len > highWaterLength) { |
| highWaterLength = len; |
| } |
| // In the forward direction we know strings |
| // are sorted so we can bail early. |
| if (forward && len < highWaterLength) { |
| break; |
| } |
| continue; |
| } |
| } |
| |
| // We've checked all strings without a partial match. |
| // If we have full matches, return the longest one. |
| if (highWaterLength != 0) { |
| offset[0] += forward ? highWaterLength : -highWaterLength; |
| return U_MATCH; |
| } |
| } |
| return super.matches(text, offset, limit, incremental); |
| } |
| } |
| |
| /** |
| * Returns the longest match for s in text at the given position. |
| * If limit > start then match forward from start+1 to limit |
| * matching all characters except s.charAt(0). If limit < start, |
| * go backward starting from start-1 matching all characters |
| * except s.charAt(s.length()-1). This method assumes that the |
| * first character, text.charAt(start), matches s, so it does not |
| * check it. |
| * @param text the text to match |
| * @param start the first character to match. In the forward |
| * direction, text.charAt(start) is matched against s.charAt(0). |
| * In the reverse direction, it is matched against |
| * s.charAt(s.length()-1). |
| * @param limit the limit offset for matching, either last+1 in |
| * the forward direction, or last-1 in the reverse direction, |
| * where last is the index of the last character to match. |
| * @return If part of s matches up to the limit, return |limit - |
| * start|. If all of s matches before reaching the limit, return |
| * s.length(). If there is a mismatch between s and text, return |
| * 0 |
| */ |
| private static int matchRest (Replaceable text, int start, int limit, String s) { |
| int maxLen; |
| int slen = s.length(); |
| if (start < limit) { |
| maxLen = limit - start; |
| if (maxLen > slen) maxLen = slen; |
| for (int i = 1; i < maxLen; ++i) { |
| if (text.charAt(start + i) != s.charAt(i)) return 0; |
| } |
| } else { |
| maxLen = start - limit; |
| if (maxLen > slen) maxLen = slen; |
| --slen; // <=> slen = s.length() - 1; |
| for (int i = 1; i < maxLen; ++i) { |
| if (text.charAt(start - i) != s.charAt(slen - i)) return 0; |
| } |
| } |
| return maxLen; |
| } |
| |
| |
| /** |
| * Implementation of UnicodeMatcher API. Union the set of all |
| * characters that may be matched by this object into the given |
| * set. |
| * @param toUnionTo the set into which to union the source characters |
| * @stable ICU 2.2 |
| */ |
| public void addMatchSetTo(UnicodeSet toUnionTo) { |
| toUnionTo.addAll(this); |
| } |
| |
| /** |
| * Returns the index of the given character within this set, where |
| * the set is ordered by ascending code point. If the character |
| * is not in this set, return -1. The inverse of this method is |
| * <code>charAt()</code>. |
| * @return an index from 0..size()-1, or -1 |
| * @stable ICU 2.0 |
| */ |
| public int indexOf(int c) { |
| if (c < MIN_VALUE || c > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(c, 6)); |
| } |
| int i = 0; |
| int n = 0; |
| for (;;) { |
| int start = list[i++]; |
| if (c < start) { |
| return -1; |
| } |
| int limit = list[i++]; |
| if (c < limit) { |
| return n + c - start; |
| } |
| n += limit - start; |
| } |
| } |
| |
| /** |
| * Returns the character at the given index within this set, where |
| * the set is ordered by ascending code point. If the index is |
| * out of range, return -1. The inverse of this method is |
| * <code>indexOf()</code>. |
| * @param index an index from 0..size()-1 |
| * @return the character at the given index, or -1. |
| * @stable ICU 2.0 |
| */ |
| public int charAt(int index) { |
| if (index >= 0) { |
| // len2 is the largest even integer <= len, that is, it is len |
| // for even values and len-1 for odd values. With odd values |
| // the last entry is UNICODESET_HIGH. |
| int len2 = len & ~1; |
| for (int i=0; i < len2;) { |
| int start = list[i++]; |
| int count = list[i++] - start; |
| if (index < count) { |
| return start + index; |
| } |
| index -= count; |
| } |
| } |
| return -1; |
| } |
| |
| /** |
| * Adds the specified range to this set if it is not already |
| * present. If this set already contains the specified range, |
| * the call leaves this set unchanged. If <code>end > start</code> |
| * then an empty range is added, leaving the set unchanged. |
| * |
| * @param start first character, inclusive, of range to be added |
| * to this set. |
| * @param end last character, inclusive, of range to be added |
| * to this set. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet add(int start, int end) { |
| if (start < MIN_VALUE || start > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(start, 6)); |
| } |
| if (end < MIN_VALUE || end > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(end, 6)); |
| } |
| if (start < end) { |
| add(range(start, end), 2, 0); |
| } else if (start == end) { |
| add(start); |
| } |
| return this; |
| } |
| |
| // /** |
| // * Format out the inversion list as a string, for debugging. Uncomment when |
| // * needed. |
| // */ |
| // public final String dump() { |
| // StringBuffer buf = new StringBuffer("["); |
| // for (int i=0; i<len; ++i) { |
| // if (i != 0) buf.append(", "); |
| // int c = list[i]; |
| // //if (c <= 0x7F && c != '\n' && c != '\r' && c != '\t' && c != ' ') { |
| // // buf.append((char) c); |
| // //} else { |
| // buf.append("U+").append(Utility.hex(c, (c<0x10000)?4:6)); |
| // //} |
| // } |
| // buf.append("]"); |
| // return buf.toString(); |
| // } |
| |
| /** |
| * Adds the specified character to this set if it is not already |
| * present. If this set already contains the specified character, |
| * the call leaves this set unchanged. |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet add(int c) { |
| if (c < MIN_VALUE || c > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(c, 6)); |
| } |
| |
| // find smallest i such that c < list[i] |
| // if odd, then it is IN the set |
| // if even, then it is OUT of the set |
| int i = findCodePoint(c); |
| |
| // already in set? |
| if ((i & 1) != 0) return this; |
| |
| // HIGH is 0x110000 |
| // assert(list[len-1] == HIGH); |
| |
| // empty = [HIGH] |
| // [start_0, limit_0, start_1, limit_1, HIGH] |
| |
| // [..., start_k-1, limit_k-1, start_k, limit_k, ..., HIGH] |
| // ^ |
| // list[i] |
| |
| // i == 0 means c is before the first range |
| |
| if (c == list[i]-1) { |
| // c is before start of next range |
| list[i] = c; |
| // if we touched the HIGH mark, then add a new one |
| if (c == MAX_VALUE) { |
| ensureCapacity(len+1); |
| list[len++] = HIGH; |
| } |
| if (i > 0 && c == list[i-1]) { |
| // collapse adjacent ranges |
| |
| // [..., start_k-1, c, c, limit_k, ..., HIGH] |
| // ^ |
| // list[i] |
| System.arraycopy(list, i+1, list, i-1, len-i-1); |
| len -= 2; |
| } |
| } |
| |
| else if (i > 0 && c == list[i-1]) { |
| // c is after end of prior range |
| list[i-1]++; |
| // no need to chcek for collapse here |
| } |
| |
| else { |
| // At this point we know the new char is not adjacent to |
| // any existing ranges, and it is not 10FFFF. |
| |
| |
| // [..., start_k-1, limit_k-1, start_k, limit_k, ..., HIGH] |
| // ^ |
| // list[i] |
| |
| // [..., start_k-1, limit_k-1, c, c+1, start_k, limit_k, ..., HIGH] |
| // ^ |
| // list[i] |
| |
| // Don't use ensureCapacity() to save on copying. |
| // NOTE: This has no measurable impact on performance, |
| // but it might help in some usage patterns. |
| if (len+2 > list.length) { |
| int[] temp = new int[len + 2 + GROW_EXTRA]; |
| if (i != 0) System.arraycopy(list, 0, temp, 0, i); |
| System.arraycopy(list, i, temp, i+2, len-i); |
| list = temp; |
| } else { |
| System.arraycopy(list, i, list, i+2, len-i); |
| } |
| |
| list[i] = c; |
| list[i+1] = c+1; |
| len += 2; |
| } |
| |
| pat = null; |
| return this; |
| } |
| |
| /** |
| * Adds the specified multicharacter to this set if it is not already |
| * present. If this set already contains the multicharacter, |
| * the call leaves this set unchanged. |
| * Thus "ch" => {"ch"} |
| * <br><b>Warning: you cannot add an empty string ("") to a UnicodeSet.</b> |
| * @param s the source string |
| * @return this object, for chaining |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet add(String s) { |
| |
| int cp = getSingleCP(s); |
| if (cp < 0) { |
| strings.add(s); |
| pat = null; |
| } else { |
| add(cp, cp); |
| } |
| return this; |
| } |
| |
| /** |
| * @return a code point IF the string consists of a single one. |
| * otherwise returns -1. |
| * @param string to test |
| */ |
| private static int getSingleCP(String s) { |
| if (s.length() < 1) { |
| throw new IllegalArgumentException("Can't use zero-length strings in UnicodeSet"); |
| } |
| if (s.length() > 2) return -1; |
| if (s.length() == 1) return s.charAt(0); |
| |
| // at this point, len = 2 |
| int cp = UTF16.charAt(s, 0); |
| if (cp > 0xFFFF) { // is surrogate pair |
| return cp; |
| } |
| return -1; |
| } |
| |
| /** |
| * Adds each of the characters in this string to the set. Thus "ch" => {"c", "h"} |
| * If this set already any particular character, it has no effect on that character. |
| * @param s the source string |
| * @return this object, for chaining |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet addAll(String s) { |
| int cp; |
| for (int i = 0; i < s.length(); i += UTF16.getCharCount(cp)) { |
| cp = UTF16.charAt(s, i); |
| add(cp, cp); |
| } |
| return this; |
| } |
| |
| /** |
| * Retains EACH of the characters in this string. Note: "ch" == {"c", "h"} |
| * If this set already any particular character, it has no effect on that character. |
| * @param s the source string |
| * @return this object, for chaining |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet retainAll(String s) { |
| return retainAll(fromAll(s)); |
| } |
| |
| /** |
| * Complement EACH of the characters in this string. Note: "ch" == {"c", "h"} |
| * If this set already any particular character, it has no effect on that character. |
| * @param s the source string |
| * @return this object, for chaining |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet complementAll(String s) { |
| return complementAll(fromAll(s)); |
| } |
| |
| /** |
| * Remove EACH of the characters in this string. Note: "ch" == {"c", "h"} |
| * If this set already any particular character, it has no effect on that character. |
| * @param s the source string |
| * @return this object, for chaining |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet removeAll(String s) { |
| return removeAll(fromAll(s)); |
| } |
| |
| /** |
| * Makes a set from a multicharacter string. Thus "ch" => {"ch"} |
| * <br><b>Warning: you cannot add an empty string ("") to a UnicodeSet.</b> |
| * @param s the source string |
| * @return a newly created set containing the given string |
| * @stable ICU 2.0 |
| */ |
| public static UnicodeSet from(String s) { |
| return new UnicodeSet().add(s); |
| } |
| |
| |
| /** |
| * Makes a set from each of the characters in the string. Thus "ch" => {"c", "h"} |
| * @param s the source string |
| * @return a newly created set containing the given characters |
| * @stable ICU 2.0 |
| */ |
| public static UnicodeSet fromAll(String s) { |
| return new UnicodeSet().addAll(s); |
| } |
| |
| |
| /** |
| * Retain only the elements in this set that are contained in the |
| * specified range. If <code>end > start</code> then an empty range is |
| * retained, leaving the set empty. |
| * |
| * @param start first character, inclusive, of range to be retained |
| * to this set. |
| * @param end last character, inclusive, of range to be retained |
| * to this set. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet retain(int start, int end) { |
| if (start < MIN_VALUE || start > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(start, 6)); |
| } |
| if (end < MIN_VALUE || end > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(end, 6)); |
| } |
| if (start <= end) { |
| retain(range(start, end), 2, 0); |
| } else { |
| clear(); |
| } |
| return this; |
| } |
| |
| /** |
| * Retain the specified character from this set if it is present. |
| * Upon return this set will be empty if it did not contain c, or |
| * will only contain c if it did contain c. |
| * @param c the character to be retained |
| * @return this object, for chaining |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet retain(int c) { |
| return retain(c, c); |
| } |
| |
| /** |
| * Retain the specified string in this set if it is present. |
| * Upon return this set will be empty if it did not contain s, or |
| * will only contain s if it did contain s. |
| * @param s the string to be retained |
| * @return this object, for chaining |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet retain(String s) { |
| int cp = getSingleCP(s); |
| if (cp < 0) { |
| boolean isIn = strings.contains(s); |
| if (isIn && size() == 1) { |
| return this; |
| } |
| clear(); |
| strings.add(s); |
| pat = null; |
| } else { |
| retain(cp, cp); |
| } |
| return this; |
| } |
| |
| /** |
| * Removes the specified range from this set if it is present. |
| * The set will not contain the specified range once the call |
| * returns. If <code>end > start</code> then an empty range is |
| * removed, leaving the set unchanged. |
| * |
| * @param start first character, inclusive, of range to be removed |
| * from this set. |
| * @param end last character, inclusive, of range to be removed |
| * from this set. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet remove(int start, int end) { |
| if (start < MIN_VALUE || start > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(start, 6)); |
| } |
| if (end < MIN_VALUE || end > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(end, 6)); |
| } |
| if (start <= end) { |
| retain(range(start, end), 2, 2); |
| } |
| return this; |
| } |
| |
| /** |
| * Removes the specified character from this set if it is present. |
| * The set will not contain the specified character once the call |
| * returns. |
| * @param c the character to be removed |
| * @return this object, for chaining |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet remove(int c) { |
| return remove(c, c); |
| } |
| |
| /** |
| * Removes the specified string from this set if it is present. |
| * The set will not contain the specified string once the call |
| * returns. |
| * @param s the string to be removed |
| * @return this object, for chaining |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet remove(String s) { |
| int cp = getSingleCP(s); |
| if (cp < 0) { |
| strings.remove(s); |
| pat = null; |
| } else { |
| remove(cp, cp); |
| } |
| return this; |
| } |
| |
| /** |
| * Complements the specified range in this set. Any character in |
| * the range will be removed if it is in this set, or will be |
| * added if it is not in this set. If <code>end > start</code> |
| * then an empty range is complemented, leaving the set unchanged. |
| * |
| * @param start first character, inclusive, of range to be removed |
| * from this set. |
| * @param end last character, inclusive, of range to be removed |
| * from this set. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet complement(int start, int end) { |
| if (start < MIN_VALUE || start > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(start, 6)); |
| } |
| if (end < MIN_VALUE || end > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(end, 6)); |
| } |
| if (start <= end) { |
| xor(range(start, end), 2, 0); |
| } |
| pat = null; |
| return this; |
| } |
| |
| /** |
| * Complements the specified character in this set. The character |
| * will be removed if it is in this set, or will be added if it is |
| * not in this set. |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet complement(int c) { |
| return complement(c, c); |
| } |
| |
| /** |
| * This is equivalent to |
| * <code>complement(MIN_VALUE, MAX_VALUE)</code>. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet complement() { |
| if (list[0] == LOW) { |
| System.arraycopy(list, 1, list, 0, len-1); |
| --len; |
| } else { |
| ensureCapacity(len+1); |
| System.arraycopy(list, 0, list, 1, len); |
| list[0] = LOW; |
| ++len; |
| } |
| pat = null; |
| return this; |
| } |
| |
| /** |
| * Complement the specified string in this set. |
| * The set will not contain the specified string once the call |
| * returns. |
| * <br><b>Warning: you cannot add an empty string ("") to a UnicodeSet.</b> |
| * @param s the string to complement |
| * @return this object, for chaining |
| * @stable ICU 2.0 |
| */ |
| public final UnicodeSet complement(String s) { |
| int cp = getSingleCP(s); |
| if (cp < 0) { |
| if (strings.contains(s)) strings.remove(s); |
| else strings.add(s); |
| pat = null; |
| } else { |
| complement(cp, cp); |
| } |
| return this; |
| } |
| |
| /** |
| * Returns true if this set contains the given character. |
| * @param c character to be checked for containment |
| * @return true if the test condition is met |
| * @stable ICU 2.0 |
| */ |
| public boolean contains(int c) { |
| if (c < MIN_VALUE || c > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(c, 6)); |
| } |
| |
| /* |
| // Set i to the index of the start item greater than ch |
| // We know we will terminate without length test! |
| int i = -1; |
| while (true) { |
| if (c < list[++i]) break; |
| } |
| */ |
| |
| int i = findCodePoint(c); |
| |
| return ((i & 1) != 0); // return true if odd |
| } |
| |
| /** |
| * Returns the smallest value i such that c < list[i]. Caller |
| * must ensure that c is a legal value or this method will enter |
| * an infinite loop. This method performs a binary search. |
| * @param c a character in the range MIN_VALUE..MAX_VALUE |
| * inclusive |
| * @return the smallest integer i in the range 0..len-1, |
| * inclusive, such that c < list[i] |
| */ |
| private final int findCodePoint(int c) { |
| /* Examples: |
| findCodePoint(c) |
| set list[] c=0 1 3 4 7 8 |
| === ============== =========== |
| [] [110000] 0 0 0 0 0 0 |
| [\u0000-\u0003] [0, 4, 110000] 1 1 1 2 2 2 |
| [\u0004-\u0007] [4, 8, 110000] 0 0 0 1 1 2 |
| [:all:] [0, 110000] 1 1 1 1 1 1 |
| */ |
| |
| // Return the smallest i such that c < list[i]. Assume |
| // list[len - 1] == HIGH and that c is legal (0..HIGH-1). |
| if (c < list[0]) return 0; |
| // High runner test. c is often after the last range, so an |
| // initial check for this condition pays off. |
| if (len >= 2 && c >= list[len-2]) return len-1; |
| int lo = 0; |
| int hi = len - 1; |
| // invariant: c >= list[lo] |
| // invariant: c < list[hi] |
| for (;;) { |
| int i = (lo + hi) >>> 1; |
| if (i == lo) return hi; |
| if (c < list[i]) { |
| hi = i; |
| } else { |
| lo = i; |
| } |
| } |
| } |
| |
| // //---------------------------------------------------------------- |
| // // Unrolled binary search |
| // //---------------------------------------------------------------- |
| // |
| // private int validLen = -1; // validated value of len |
| // private int topOfLow; |
| // private int topOfHigh; |
| // private int power; |
| // private int deltaStart; |
| // |
| // private void validate() { |
| // if (len <= 1) { |
| // throw new IllegalArgumentException("list.len==" + len + "; must be >1"); |
| // } |
| // |
| // // find greatest power of 2 less than or equal to len |
| // for (power = exp2.length-1; power > 0 && exp2[power] > len; power--) {} |
| // |
| // // assert(exp2[power] <= len); |
| // |
| // // determine the starting points |
| // topOfLow = exp2[power] - 1; |
| // topOfHigh = len - 1; |
| // deltaStart = exp2[power-1]; |
| // validLen = len; |
| // } |
| // |
| // private static final int exp2[] = { |
| // 0x1, 0x2, 0x4, 0x8, |
| // 0x10, 0x20, 0x40, 0x80, |
| // 0x100, 0x200, 0x400, 0x800, |
| // 0x1000, 0x2000, 0x4000, 0x8000, |
| // 0x10000, 0x20000, 0x40000, 0x80000, |
| // 0x100000, 0x200000, 0x400000, 0x800000, |
| // 0x1000000, 0x2000000, 0x4000000, 0x8000000, |
| // 0x10000000, 0x20000000 // , 0x40000000 // no unsigned int in Java |
| // }; |
| // |
| // /** |
| // * Unrolled lowest index GT. |
| // */ |
| // private final int leastIndexGT(int searchValue) { |
| // |
| // if (len != validLen) { |
| // if (len == 1) return 0; |
| // validate(); |
| // } |
| // int temp; |
| // |
| // // set up initial range to search. Each subrange is a power of two in length |
| // int high = searchValue < list[topOfLow] ? topOfLow : topOfHigh; |
| // |
| // // Completely unrolled binary search, folhighing "Programming Pearls" |
| // // Each case deliberately falls through to the next |
| // // Logically, list[-1] < all_search_values && list[count] > all_search_values |
| // // although the values -1 and count are never actually touched. |
| // |
| // // The bounds at each point are low & high, |
| // // where low == high - delta*2 |
| // // so high - delta is the midpoint |
| // |
| // // The invariant AFTER each line is that list[low] < searchValue <= list[high] |
| // |
| // switch (power) { |
| // //case 31: if (searchValue < list[temp = high-0x40000000]) high = temp; // no unsigned int in Java |
| // case 30: if (searchValue < list[temp = high-0x20000000]) high = temp; |
| // case 29: if (searchValue < list[temp = high-0x10000000]) high = temp; |
| // |
| // case 28: if (searchValue < list[temp = high- 0x8000000]) high = temp; |
| // case 27: if (searchValue < list[temp = high- 0x4000000]) high = temp; |
| // case 26: if (searchValue < list[temp = high- 0x2000000]) high = temp; |
| // case 25: if (searchValue < list[temp = high- 0x1000000]) high = temp; |
| // |
| // case 24: if (searchValue < list[temp = high- 0x800000]) high = temp; |
| // case 23: if (searchValue < list[temp = high- 0x400000]) high = temp; |
| // case 22: if (searchValue < list[temp = high- 0x200000]) high = temp; |
| // case 21: if (searchValue < list[temp = high- 0x100000]) high = temp; |
| // |
| // case 20: if (searchValue < list[temp = high- 0x80000]) high = temp; |
| // case 19: if (searchValue < list[temp = high- 0x40000]) high = temp; |
| // case 18: if (searchValue < list[temp = high- 0x20000]) high = temp; |
| // case 17: if (searchValue < list[temp = high- 0x10000]) high = temp; |
| // |
| // case 16: if (searchValue < list[temp = high- 0x8000]) high = temp; |
| // case 15: if (searchValue < list[temp = high- 0x4000]) high = temp; |
| // case 14: if (searchValue < list[temp = high- 0x2000]) high = temp; |
| // case 13: if (searchValue < list[temp = high- 0x1000]) high = temp; |
| // |
| // case 12: if (searchValue < list[temp = high- 0x800]) high = temp; |
| // case 11: if (searchValue < list[temp = high- 0x400]) high = temp; |
| // case 10: if (searchValue < list[temp = high- 0x200]) high = temp; |
| // case 9: if (searchValue < list[temp = high- 0x100]) high = temp; |
| // |
| // case 8: if (searchValue < list[temp = high- 0x80]) high = temp; |
| // case 7: if (searchValue < list[temp = high- 0x40]) high = temp; |
| // case 6: if (searchValue < list[temp = high- 0x20]) high = temp; |
| // case 5: if (searchValue < list[temp = high- 0x10]) high = temp; |
| // |
| // case 4: if (searchValue < list[temp = high- 0x8]) high = temp; |
| // case 3: if (searchValue < list[temp = high- 0x4]) high = temp; |
| // case 2: if (searchValue < list[temp = high- 0x2]) high = temp; |
| // case 1: if (searchValue < list[temp = high- 0x1]) high = temp; |
| // } |
| // |
| // return high; |
| // } |
| // |
| // // For debugging only |
| // public int len() { |
| // return len; |
| // } |
| // |
| // //---------------------------------------------------------------- |
| // //---------------------------------------------------------------- |
| |
| /** |
| * Returns true if this set contains every character |
| * of the given range. |
| * @param start first character, inclusive, of the range |
| * @param end last character, inclusive, of the range |
| * @return true if the test condition is met |
| * @stable ICU 2.0 |
| */ |
| public boolean contains(int start, int end) { |
| if (start < MIN_VALUE || start > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(start, 6)); |
| } |
| if (end < MIN_VALUE || end > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(end, 6)); |
| } |
| //int i = -1; |
| //while (true) { |
| // if (start < list[++i]) break; |
| //} |
| int i = findCodePoint(start); |
| return ((i & 1) != 0 && end < list[i]); |
| } |
| |
| /** |
| * Returns <tt>true</tt> if this set contains the given |
| * multicharacter string. |
| * @param s string to be checked for containment |
| * @return <tt>true</tt> if this set contains the specified string |
| * @stable ICU 2.0 |
| */ |
| public final boolean contains(String s) { |
| |
| int cp = getSingleCP(s); |
| if (cp < 0) { |
| return strings.contains(s); |
| } else { |
| return contains(cp); |
| } |
| } |
| |
| /** |
| * Returns true if this set contains all the characters and strings |
| * of the given set. |
| * @param c set to be checked for containment |
| * @return true if the test condition is met |
| * @stable ICU 2.0 |
| */ |
| public boolean containsAll(UnicodeSet c) { |
| // The specified set is a subset if all of its pairs are contained in |
| // this set. It's possible to code this more efficiently in terms of |
| // direct manipulation of the inversion lists if the need arises. |
| int n = c.getRangeCount(); |
| for (int i=0; i<n; ++i) { |
| if (!contains(c.getRangeStart(i), c.getRangeEnd(i))) { |
| return false; |
| } |
| } |
| if (!strings.containsAll(c.strings)) return false; |
| return true; |
| } |
| |
| /** |
| * Returns true if this set contains all the characters |
| * of the given string. |
| * @param s string containing characters to be checked for containment |
| * @return true if the test condition is met |
| * @stable ICU 2.0 |
| */ |
| public boolean containsAll(String s) { |
| int cp; |
| for (int i = 0; i < s.length(); i += UTF16.getCharCount(cp)) { |
| cp = UTF16.charAt(s, i); |
| if (!contains(cp)) return false; |
| } |
| return true; |
| } |
| |
| /** |
| * Returns true if this set contains none of the characters |
| * of the given range. |
| * @param start first character, inclusive, of the range |
| * @param end last character, inclusive, of the range |
| * @return true if the test condition is met |
| * @stable ICU 2.0 |
| */ |
| public boolean containsNone(int start, int end) { |
| if (start < MIN_VALUE || start > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(start, 6)); |
| } |
| if (end < MIN_VALUE || end > MAX_VALUE) { |
| throw new IllegalArgumentException("Invalid code point U+" + Utility.hex(end, 6)); |
| } |
| int i = -1; |
| while (true) { |
| if (start < list[++i]) break; |
| } |
| return ((i & 1) == 0 && end < list[i]); |
| } |
| |
| /** |
| * Returns true if this set contains none of the characters and strings |
| * of the given set. |
| * @param c set to be checked for containment |
| * @return true if the test condition is met |
| * @stable ICU 2.0 |
| */ |
| public boolean containsNone(UnicodeSet c) { |
| // The specified set is a subset if all of its pairs are contained in |
| // this set. It's possible to code this more efficiently in terms of |
| // direct manipulation of the inversion lists if the need arises. |
| int n = c.getRangeCount(); |
| for (int i=0; i<n; ++i) { |
| if (!containsNone(c.getRangeStart(i), c.getRangeEnd(i))) { |
| return false; |
| } |
| } |
| if (!SortedSetRelation.hasRelation(strings, SortedSetRelation.DISJOINT, c.strings)) return false; |
| return true; |
| } |
| |
| /** |
| * Returns true if this set contains none of the characters |
| * of the given string. |
| * @param s string containing characters to be checked for containment |
| * @return true if the test condition is met |
| * @stable ICU 2.0 |
| */ |
| public boolean containsNone(String s) { |
| int cp; |
| for (int i = 0; i < s.length(); i += UTF16.getCharCount(cp)) { |
| cp = UTF16.charAt(s, i); |
| if (contains(cp)) return false; |
| } |
| return true; |
| } |
| |
| /** |
| * Returns true if this set contains one or more of the characters |
| * in the given range. |
| * @param start first character, inclusive, of the range |
| * @param end last character, inclusive, of the range |
| * @return true if the condition is met |
| * @stable ICU 2.0 |
| */ |
| public final boolean containsSome(int start, int end) { |
| return !containsNone(start, end); |
| } |
| |
| /** |
| * Returns true if this set contains one or more of the characters |
| * and strings of the given set. |
| * @param s set to be checked for containment |
| * @return true if the condition is met |
| * @stable ICU 2.0 |
| */ |
| public final boolean containsSome(UnicodeSet s) { |
| return !containsNone(s); |
| } |
| |
| /** |
| * Returns true if this set contains one or more of the characters |
| * of the given string. |
| * @param s string containing characters to be checked for containment |
| * @return true if the condition is met |
| * @stable ICU 2.0 |
| */ |
| public final boolean containsSome(String s) { |
| return !containsNone(s); |
| } |
| |
| |
| /** |
| * Adds all of the elements in the specified set to this set if |
| * they're not already present. This operation effectively |
| * modifies this set so that its value is the <i>union</i> of the two |
| * sets. The behavior of this operation is unspecified if the specified |
| * collection is modified while the operation is in progress. |
| * |
| * @param c set whose elements are to be added to this set. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet addAll(UnicodeSet c) { |
| add(c.list, c.len, 0); |
| strings.addAll(c.strings); |
| return this; |
| } |
| |
| /** |
| * Retains only the elements in this set that are contained in the |
| * specified set. In other words, removes from this set all of |
| * its elements that are not contained in the specified set. This |
| * operation effectively modifies this set so that its value is |
| * the <i>intersection</i> of the two sets. |
| * |
| * @param c set that defines which elements this set will retain. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet retainAll(UnicodeSet c) { |
| retain(c.list, c.len, 0); |
| strings.retainAll(c.strings); |
| return this; |
| } |
| |
| /** |
| * Removes from this set all of its elements that are contained in the |
| * specified set. This operation effectively modifies this |
| * set so that its value is the <i>asymmetric set difference</i> of |
| * the two sets. |
| * |
| * @param c set that defines which elements will be removed from |
| * this set. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet removeAll(UnicodeSet c) { |
| retain(c.list, c.len, 2); |
| strings.removeAll(c.strings); |
| return this; |
| } |
| |
| /** |
| * Complements in this set all elements contained in the specified |
| * set. Any character in the other set will be removed if it is |
| * in this set, or will be added if it is not in this set. |
| * |
| * @param c set that defines which elements will be complemented from |
| * this set. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet complementAll(UnicodeSet c) { |
| xor(c.list, c.len, 0); |
| SortedSetRelation.doOperation(strings, SortedSetRelation.COMPLEMENTALL, c.strings); |
| return this; |
| } |
| |
| /** |
| * Removes all of the elements from this set. This set will be |
| * empty after this call returns. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet clear() { |
| list[0] = HIGH; |
| len = 1; |
| pat = null; |
| strings.clear(); |
| return this; |
| } |
| |
| /** |
| * Iteration method that returns the number of ranges contained in |
| * this set. |
| * @see #getRangeStart |
| * @see #getRangeEnd |
| * @stable ICU 2.0 |
| */ |
| public int getRangeCount() { |
| return len/2; |
| } |
| |
| /** |
| * Iteration method that returns the first character in the |
| * specified range of this set. |
| * @exception ArrayIndexOutOfBoundsException if index is outside |
| * the range <code>0..getRangeCount()-1</code> |
| * @see #getRangeCount |
| * @see #getRangeEnd |
| * @stable ICU 2.0 |
| */ |
| public int getRangeStart(int index) { |
| return list[index*2]; |
| } |
| |
| /** |
| * Iteration method that returns the last character in the |
| * specified range of this set. |
| * @exception ArrayIndexOutOfBoundsException if index is outside |
| * the range <code>0..getRangeCount()-1</code> |
| * @see #getRangeStart |
| * @see #getRangeEnd |
| * @stable ICU 2.0 |
| */ |
| public int getRangeEnd(int index) { |
| return (list[index*2 + 1] - 1); |
| } |
| |
| /** |
| * Reallocate this objects internal structures to take up the least |
| * possible space, without changing this object's value. |
| * @stable ICU 2.0 |
| */ |
| public UnicodeSet compact() { |
| if (len != list.length) { |
| int[] temp = new int[len]; |
| System.arraycopy(list, 0, temp, 0, len); |
| list = temp; |
| } |
| rangeList = null; |
| buffer = null; |
| return this; |
| } |
| |
| /** |
| * Compares the specified object with this set for equality. Returns |
| * <tt>true</tt> if the specified object is also a set, the two sets |
| * have the same size, and every member of the specified set is |
| * contained in this set (or equivalently, every member of this set is |
| * contained in the specified set). |
| * |
| * @param o Object to be compared for equality with this set. |
| * @return <tt>true</tt> if the specified Object is equal to this set. |
| * @stable ICU 2.0 |
| */ |
| public boolean equals(Object o) { |
| try { |
| UnicodeSet that = (UnicodeSet) o; |
| if (len != that.len) return false; |
| for (int i = 0; i < len; ++i) { |
| if (list[i] != that.list[i]) return false; |
| } |
| if (!strings.equals(that.strings)) return false; |
| } catch (Exception e) { |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * Returns the hash code value for this set. |
| * |
| * @return the hash code value for this set. |
| * @see java.lang.Object#hashCode() |
| * @stable ICU 2.0 |
| */ |
| public int hashCode() { |
| int result = len; |
| for (int i = 0; i < len; ++i) { |
| result *= 1000003; |
| result += list[i]; |
| } |
| return result; |
| } |
| |
| /** |
| * Return a programmer-readable string representation of this object. |
| * @stable ICU 2.0 |
| */ |
| public String toString() { |
| return toPattern(true); |
| } |
| |
| //---------------------------------------------------------------- |
| // Implementation: Pattern parsing |
| //---------------------------------------------------------------- |
| |
| /** |
| * Parses the given pattern, starting at the given position. The character |
| * at pattern.charAt(pos.getIndex()) must be '[', or the parse fails. |
| * Parsing continues until the corresponding closing ']'. If a syntax error |
| * is encountered between the opening and closing brace, the parse fails. |
| * Upon return from a successful parse, the ParsePosition is updated to |
| * point to the character following the closing ']', and an inversion |
| * list for the parsed pattern is returned. This method |
| * calls itself recursively to parse embedded subpatterns. |
| * |
| * @param pattern the string containing the pattern to be parsed. The |
| * portion of the string from pos.getIndex(), which must be a '[', to the |
| * corresponding closing ']', is parsed. |
| * @param pos upon entry, the position at which to being parsing. The |
| * character at pattern.charAt(pos.getIndex()) must be a '['. Upon return |
| * from a successful parse, pos.getIndex() is either the character after the |
| * closing ']' of the parsed pattern, or pattern.length() if the closing ']' |
| * is the last character of the pattern string. |
| * @return an inversion list for the parsed substring |
| * of <code>pattern</code> |
| * @exception java.lang.IllegalArgumentException if the parse fails. |
| */ |
| void applyPattern(String pattern, |
| ParsePosition pos, |
| SymbolTable symbols, |
| int options) { |
| |
| // Need to build the pattern in a temporary string because |
| // _applyPattern calls add() etc., which set pat to empty. |
| StringBuffer rebuiltPat = new StringBuffer(); |
| RuleCharacterIterator chars = |
| new RuleCharacterIterator(pattern, symbols, pos); |
| applyPattern(chars, symbols, rebuiltPat, options); |
| if (chars.inVariable()) { |
| syntaxError(chars, "Extra chars in variable value"); |
| } |
| pat = rebuiltPat.toString(); |
| } |
| |
| /** |
| * Parse the pattern from the given RuleCharacterIterator. The |
| * iterator is advanced over the parsed pattern. |
| * @param chars iterator over the pattern characters. Upon return |
| * it will be advanced to the first character after the parsed |
| * pattern, or the end of the iteration if all characters are |
| * parsed. |
| * @param symbols symbol table to use to parse and dereference |
| * variables, or null if none. |
| * @param rebuiltPat the pattern that was parsed, rebuilt or |
| * copied from the input pattern, as appropriate. |
| * @param options a bit mask of zero or more of the following: |
| * IGNORE_SPACE, CASE. |
| */ |
| void applyPattern(RuleCharacterIterator chars, SymbolTable symbols, |
| StringBuffer rebuiltPat, int options) { |
| |
| // Syntax characters: [ ] ^ - & { } |
| |
| // Recognized special forms for chars, sets: c-c s-s s&s |
| |
| int opts = RuleCharacterIterator.PARSE_VARIABLES | |
| RuleCharacterIterator.PARSE_ESCAPES; |
| if ((options & IGNORE_SPACE) != 0) { |
| opts |= RuleCharacterIterator.SKIP_WHITESPACE; |
| } |
| |
| StringBuffer pat = new StringBuffer(), buf = null; |
| boolean usePat = false; |
| UnicodeSet scratch = null; |
| Object backup = null; |
| |
| // mode: 0=before [, 1=between [...], 2=after ] |
| // lastItem: 0=none, 1=char, 2=set |
| int lastItem = 0, lastChar = 0, mode = 0; |
| char op = 0; |
| |
| boolean invert = false; |
| |
| clear(); |
| |
| while (mode != 2 && !chars.atEnd()) { |
| if (false) { |
| // Debugging assertion |
| if (!((lastItem == 0 && op == 0) || |
| (lastItem == 1 && (op == 0 || op == '-')) || |
| (lastItem == 2 && (op == 0 || op == '-' || op == '&')))) { |
| throw new IllegalArgumentException(); |
| } |
| } |
| |
| int c = 0; |
| boolean literal = false; |
| UnicodeSet nested = null; |
| |
| // -------- Check for property pattern |
| |
| // setMode: 0=none, 1=unicodeset, 2=propertypat, 3=preparsed |
| int setMode = 0; |
| if (resemblesPropertyPattern(chars, opts)) { |
| setMode = 2; |
| } |
| |
| // -------- Parse '[' of opening delimiter OR nested set. |
| // If there is a nested set, use `setMode' to define how |
| // the set should be parsed. If the '[' is part of the |
| // opening delimiter for this pattern, parse special |
| // strings "[", "[^", "[-", and "[^-". Check for stand-in |
| // characters representing a nested set in the symbol |
| // table. |
| |
| else { |
| // Prepare to backup if necessary |
| backup = chars.getPos(backup); |
| c = chars.next(opts); |
| literal = chars.isEscaped(); |
| |
| if (c == '[' && !literal) { |
| if (mode == 1) { |
| chars.setPos(backup); // backup |
| setMode = 1; |
| } else { |
| // Handle opening '[' delimiter |
| mode = 1; |
| pat.append('['); |
| backup = chars.getPos(backup); // prepare to backup |
| c = chars.next(opts); |
| literal = chars.isEscaped(); |
| if (c == '^' && !literal) { |
| invert = true; |
| pat.append('^'); |
| backup = chars.getPos(backup); // prepare to backup |
| c = chars.next(opts); |
| literal = chars.isEscaped(); |
| } |
| // Fall through to handle special leading '-'; |
| // otherwise restart loop for nested [], \p{}, etc. |
| if (c == '-') { |
| literal = true; |
| // Fall through to handle literal '-' below |
| } else { |
| chars.setPos(backup); // backup |
| continue; |
| } |
| } |
| } else if (symbols != null) { |
| UnicodeMatcher m = symbols.lookupMatcher(c); // may be null |
| if (m != null) { |
| try { |
| nested = (UnicodeSet) m; |
| setMode = 3; |
| } catch (ClassCastException e) { |
| syntaxError(chars, "Syntax error"); |
| } |
| } |
| } |
| } |
| |
| // -------- Handle a nested set. This either is inline in |
| // the pattern or represented by a stand-in that has |
| // previously been parsed and was looked up in the symbol |
| // table. |
| |
| if (setMode != 0) { |
| if (lastItem == 1) { |
| if (op != 0) { |
| syntaxError(chars, "Char expected after operator"); |
| } |
| add(lastChar, lastChar); |
| _appendToPat(pat, lastChar, false); |
| lastItem = op = 0; |
| } |
| |
| if (op == '-' || op == '&') { |
| pat.append(op); |
| } |
| |
| if (nested == null) { |
| if (scratch == null) scratch = new UnicodeSet(); |
| nested = scratch; |
| } |
| switch (setMode) { |
| case 1: |
| nested.applyPattern(chars, symbols, pat, options); |
| break; |
| case 2: |
| chars.skipIgnored(opts); |
| nested.applyPropertyPattern(chars, pat); |
| break; |
| case 3: // `nested' already parsed |
| nested._toPattern(pat, false); |
| break; |
| } |
| |
| usePat = true; |
| |
| if (mode == 0) { |
| // Entire pattern is a category; leave parse loop |
| set(nested); |
| mode = 2; |
| break; |
| } |
| |
| switch (op) { |
| case '-': |
| removeAll(nested); |
| break; |
| case '&': |
| retainAll(nested); |
| break; |
| case 0: |
| addAll(nested); |
| break; |
| } |
| |
| op = 0; |
| lastItem = 2; |
| |
| continue; |
| } |
| |
| if (mode == 0) { |
| syntaxError(chars, "Missing '['"); |
| } |
| |
| // -------- Parse special (syntax) characters. If the |
| // current character is not special, or if it is escaped, |
| // then fall through and handle it below. |
| |
| if (!literal) { |
| switch (c) { |
| case ']': |
| if (lastItem == 1) { |
| add(lastChar, lastChar); |
| _appendToPat(pat, lastChar, false); |
| } |
| // Treat final trailing '-' as a literal |
| if (op == '-') { |
| add(op, op); |
| pat.append(op); |
| } else if (op == '&') { |
| syntaxError(chars, "Trailing '&'"); |
| } |
| pat.append(']'); |
| mode = 2; |
| continue; |
| case '-': |
| if (op == 0) { |
| if (lastItem != 0) { |
| op = (char) c; |
| continue; |
| } else { |
| // Treat final trailing '-' as a literal |
| add(c, c); |
| c = chars.next(opts); |
| literal = chars.isEscaped(); |
| if (c == ']' && !literal) { |
| pat.append("-]"); |
| mode = 2; |
| continue; |
| } |
| } |
| } |
| syntaxError(chars, "'-' not after char or set"); |
| case '&': |
| if (lastItem == 2 && op == 0) { |
| op = (char) c; |
| continue; |
| } |
| syntaxError(chars, "'&' not after set"); |
| case '^': |
| syntaxError(chars, "'^' not after '['"); |
| case '{': |
| if (op != 0) { |
| syntaxError(chars, "Missing operand after operator"); |
| } |
| if (lastItem == 1) { |
| add(lastChar, lastChar); |
| _appendToPat(pat, lastChar, false); |
| } |
| lastItem = 0; |
| if (buf == null) { |
| buf = new StringBuffer(); |
| } else { |
| buf.setLength(0); |
| } |
| boolean ok = false; |
| while (!chars.atEnd()) { |
| c = chars.next(opts); |
| literal = chars.isEscaped(); |
| if (c == '}' && !literal) { |
| ok = true; |
| break; |
| } |
| UTF16.append(buf, c); |
| } |
| if (buf.length() < 1 || !ok) { |
| syntaxError(chars, "Invalid multicharacter string"); |
| } |
| // We have new string. Add it to set and continue; |
| // we don't need to drop through to the further |
| // processing |
| add(buf.toString()); |
| pat.append('{'); |
| _appendToPat(pat, buf.toString(), false); |
| pat.append('}'); |
| continue; |
| case SymbolTable.SYMBOL_REF: |
| // symbols nosymbols |
| // [a-$] error error (ambiguous) |
| // [a$] anchor anchor |
| // [a-$x] var "x"* literal '$' |
| // [a-$.] error literal '$' |
| // *We won't get here in the case of var "x" |
| backup = chars.getPos(backup); |
| c = chars.next(opts); |
| literal = chars.isEscaped(); |
| boolean anchor = (c == ']' && !literal); |
| if (symbols == null && !anchor) { |
| c = SymbolTable.SYMBOL_REF; |
| chars.setPos(backup); |
| break; // literal '$' |
| } |
| if (anchor && op == 0) { |
| if (lastItem == 1) { |
| add(lastChar, lastChar); |
| _appendToPat(pat, lastChar, false); |
| } |
| add(UnicodeMatcher.ETHER); |
| usePat = true; |
| pat.append(SymbolTable.SYMBOL_REF).append(']'); |
| mode = 2; |
| continue; |
| } |
| syntaxError(chars, "Unquoted '$'"); |
| default: |
| break; |
| } |
| } |
| |
| // -------- Parse literal characters. This includes both |
| // escaped chars ("\u4E01") and non-syntax characters |
| // ("a"). |
| |
| switch (lastItem) { |
| case 0: |
| lastItem = 1; |
| lastChar = c; |
| break; |
| case 1: |
| if (op == '-') { |
| if (lastChar >= c) { |
| // Don't allow redundant (a-a) or empty (b-a) ranges; |
| // these are most likely typos. |
| syntaxError(chars, "Invalid range"); |
| } |
| add(lastChar, c); |
| _appendToPat(pat, lastChar, false); |
| pat.append(op); |
| _appendToPat(pat, c, false); |
| lastItem = op = 0; |
| } else { |
| add(lastChar, lastChar); |
| _appendToPat(pat, lastChar, false); |
| lastChar = c; |
| } |
| break; |
| case 2: |
| if (op != 0) { |
| syntaxError(chars, "Set expected after operator"); |
| } |
| lastChar = c; |
| lastItem = 1; |
| break; |
| } |
| } |
| |
| if (mode != 2) { |
| syntaxError(chars, "Missing ']'"); |
| } |
| |
| chars.skipIgnored(opts); |
| |
| /** |
| * Handle global flags (invert, case insensitivity). If this |
| * pattern should be compiled case-insensitive, then we need |
| * to close over case BEFORE COMPLEMENTING. This makes |
| * patterns like /[^abc]/i work. |
| */ |
| if ((options & CASE) != 0) { |
| closeOver(CASE); |
| } |
| if (invert) { |
| complement(); |
| } |
| |
| // Use the rebuilt pattern (pat) only if necessary. Prefer the |
| // generated pattern. |
| if (usePat) { |
| rebuiltPat.append(pat.toString()); |
| } else { |
| _generatePattern(rebuiltPat, false); |
| } |
| } |
| |
| private static void syntaxError(RuleCharacterIterator chars, String msg) { |
| throw new IllegalArgumentException("Error: " + msg + " at \"" + |
| Utility.escape(chars.toString()) + |
| '"'); |
| } |
| |
| /** |
| * Add the contents of the UnicodeSet (as strings) into a collection. |
| * @param target collection to add into |
| * @draft ICU 2.8 |
| */ |
| public void addAllTo(Collection target) { |
| UnicodeSetIterator it = new UnicodeSetIterator(this); |
| while (it.next()) { |
| target.add(it.getString()); |
| } |
| } |
| |
| /** |
| * Add the contents of the collection (as strings) into this UnicodeSet. |
| * @param source the collection to add |
| * @draft ICU 2.8 |
| */ |
| public void addAll(Collection source) { |
| Iterator it = source.iterator(); |
| while (it.hasNext()) { |
| source.add(it.next().toString()); |
| } |
| } |
| |
| //---------------------------------------------------------------- |
| // Implementation: Utility methods |
| //---------------------------------------------------------------- |
| |
| private void ensureCapacity(int newLen) { |
| if (newLen <= list.length) return; |
| int[] temp = new int[newLen + GROW_EXTRA]; |
| System.arraycopy(list, 0, temp, 0, len); |
| list = temp; |
| } |
| |
| private void ensureBufferCapacity(int newLen) { |
| if (buffer != null && newLen <= buffer.length) return; |
| buffer = new int[newLen + GROW_EXTRA]; |
| } |
| |
| /** |
| * Assumes start <= end. |
| */ |
| private int[] range(int start, int end) { |
| if (rangeList == null) { |
| rangeList = new int[] { start, end+1, HIGH }; |
| } else { |
| rangeList[0] = start; |
| rangeList[1] = end+1; |
| } |
| return rangeList; |
| } |
| |
| //---------------------------------------------------------------- |
| // Implementation: Fundamental operations |
| //---------------------------------------------------------------- |
| |
| // polarity = 0, 3 is normal: x xor y |
| // polarity = 1, 2: x xor ~y == x === y |
| |
| private UnicodeSet xor(int[] other, int otherLen, int polarity) { |
| ensureBufferCapacity(len + otherLen); |
| int i = 0, j = 0, k = 0; |
| int a = list[i++]; |
| int b; |
| if (polarity == 1 || polarity == 2) { |
| b = LOW; |
| if (other[j] == LOW) { // skip base if already LOW |
| ++j; |
| b = other[j]; |
| } |
| } else { |
| b = other[j++]; |
| } |
| // simplest of all the routines |
| // sort the values, discarding identicals! |
| while (true) { |
| if (a < b) { |
| buffer[k++] = a; |
| a = list[i++]; |
| } else if (b < a) { |
| buffer[k++] = b; |
| b = other[j++]; |
| } else if (a != HIGH) { // at this point, a == b |
| // discard both values! |
| a = list[i++]; |
| b = other[j++]; |
| } else { // DONE! |
| buffer[k++] = HIGH; |
| len = k; |
| break; |
| } |
| } |
| // swap list and buffer |
| int[] temp = list; |
| list = buffer; |
| buffer = temp; |
| pat = null; |
| return this; |
| } |
| |
| // polarity = 0 is normal: x union y |
| // polarity = 2: x union ~y |
| // polarity = 1: ~x union y |
| // polarity = 3: ~x union ~y |
| |
| private UnicodeSet add(int[] other, int otherLen, int polarity) { |
| ensureBufferCapacity(len + otherLen); |
| int i = 0, j = 0, k = 0; |
| int a = list[i++]; |
| int b = other[j++]; |
| // change from xor is that we have to check overlapping pairs |
| // polarity bit 1 means a is second, bit 2 means b is. |
| main: |
| while (true) { |
| switch (polarity) { |
| case 0: // both first; take lower if unequal |
| if (a < b) { // take a |
| // Back up over overlapping ranges in buffer[] |
| if (k > 0 && a <= buffer[k-1]) { |
| // Pick latter end value in buffer[] vs. list[] |
| a = max(list[i], buffer[--k]); |
| } else { |
| // No overlap |
| buffer[k++] = a; |
| a = list[i]; |
| } |
| i++; // Common if/else code factored out |
| polarity ^= 1; |
| } else if (b < a) { // take b |
| if (k > 0 && b <= buffer[k-1]) { |
| b = max(other[j], buffer[--k]); |
| } else { |
| buffer[k++] = b; |
| b = other[j]; |
| } |
| j++; |
| polarity ^= 2; |
| } else { // a == b, take a, drop b |
| if (a == HIGH) break main; |
| // This is symmetrical; it doesn't matter if |
| // we backtrack with a or b. - liu |
| if (k > 0 && a <= buffer[k-1]) { |
| a = max(list[i], buffer[--k]); |
| } else { |
| // No overlap |
| buffer[k++] = a; |
| a = list[i]; |
| } |
| i++; |
| polarity ^= 1; |
| b = other[j++]; polarity ^= 2; |
| } |
| break; |
| case 3: // both second; take higher if unequal, and drop other |
| if (b <= a) { // take a |
| if (a == HIGH) break main; |
| buffer[k++] = a; |
| } else { // take b |
| if (b == HIGH) break main; |
| buffer[k++] = b; |
| } |
| a = list[i++]; polarity ^= 1; // factored common code |
| b = other[j++]; polarity ^= 2; |
| break; |
| case 1: // a second, b first; if b < a, overlap |
| if (a < b) { // no overlap, take a |
| buffer[k++] = a; a = list[i++]; polarity ^= 1; |
| } else if (b < a) { // OVERLAP, drop b |
| b = other[j++]; polarity ^= 2; |
| } else { // a == b, drop both! |
| if (a == HIGH) break main; |
| a = list[i++]; polarity ^= 1; |
| b = other[j++]; polarity ^= 2; |
| } |
| break; |
| case 2: // a first, b second; if a < b, overlap |
| if (b < a) { // no overlap, take b |
| buffer[k++] = b; b = other[j++]; polarity ^= 2; |
| } else if (a < b) { // OVERLAP, drop a |
| a = list[i++]; polarity ^= 1; |
| } else { // a == b, drop both! |
| if (a == HIGH) break main; |
| a = list[i++]; polarity ^= 1; |
| b = other[j++]; polarity ^= 2; |
| } |
| break; |
| } |
| } |
| buffer[k++] = HIGH; // terminate |
| len = k; |
| // swap list and buffer |
| int[] temp = list; |
| list = buffer; |
| buffer = temp; |
| pat = null; |
| return this; |
| } |
| |
| // polarity = 0 is normal: x intersect y |
| // polarity = 2: x intersect ~y == set-minus |
| // polarity = 1: ~x intersect y |
| // polarity = 3: ~x intersect ~y |
| |
| private UnicodeSet retain(int[] other, int otherLen, int polarity) { |
| ensureBufferCapacity(len + otherLen); |
| int i = 0, j = 0, k = 0; |
| int a = list[i++]; |
| int b = other[j++]; |
| // change from xor is that we have to check overlapping pairs |
| // polarity bit 1 means a is second, bit 2 means b is. |
| main: |
| while (true) { |
| switch (polarity) { |
| case 0: // both first; drop the smaller |
| if (a < b) { // drop a |
| a = list[i++]; polarity ^= 1; |
| } else if (b < a) { // drop b |
| b = other[j++]; polarity ^= 2; |
| } else { // a == b, take one, drop other |
| if (a == HIGH) break main; |
| buffer[k++] = a; a = list[i++]; polarity ^= 1; |
| b = other[j++]; polarity ^= 2; |
| } |
| break; |
| case 3: // both second; take lower if unequal |
| if (a < b) { // take a |
| buffer[k++] = a; a = list[i++]; polarity ^= 1; |
| } else if (b < a) { // take b |
| buffer[k++] = b; b = other[j++]; polarity ^= 2; |
| } else { // a == b, take one, drop other |
| if (a == HIGH) break main; |
| buffer[k++] = a; a = list[i++]; polarity ^= 1; |
| b = other[j++]; polarity ^= 2; |
| } |
| break; |
| case 1: // a second, b first; |
| if (a < b) { // NO OVERLAP, drop a |
| a = list[i++]; polarity ^= 1; |
| } else if (b < a) { // OVERLAP, take b |
| buffer[k++] = b; b = other[j++]; polarity ^= 2; |
| } else { // a == b, drop both! |
| if (a == HIGH) break main; |
| a = list[i++]; polarity ^= 1; |
| b = other[j++]; polarity ^= 2; |
| } |
| break; |
| case 2: // a first, b second; if a < b, overlap |
| if (b < a) { // no overlap, drop b |
| b = other[j++]; polarity ^= 2; |
| } else if (a < b) { // OVERLAP, take a |
| buffer[k++] = a; a = list[i++]; polarity ^= 1; |
| } else { // a == b, drop both! |
| if (a == HIGH) break main; |
| a = list[i++]; polarity ^= 1; |
| b = other[j++]; polarity ^= 2; |
| } |
| break; |
| } |
| } |
| buffer[k++] = HIGH; // terminate |
| len = k; |
| // swap list and buffer |
| int[] temp = list; |
| list = buffer; |
| buffer = temp; |
| pat = null; |
| return this; |
| } |
| |
| private static final int max(int a, int b) { |
| return (a > b) ? a : b; |
| } |
| |
| //---------------------------------------------------------------- |
| // Generic filter-based scanning code |
| //---------------------------------------------------------------- |
| |
| private static interface Filter { |
| boolean contains(int codePoint); |
| } |
| |
| private static class NumericValueFilter implements Filter { |
| double value; |
| NumericValueFilter(double value) { this.value = value; } |
| public boolean contains(int ch) { |
| return UCharacter.getUnicodeNumericValue(ch) == value; |
| } |
| } |
| |
| private static class GeneralCategoryMaskFilter implements Filter { |
| int mask; |
| GeneralCategoryMaskFilter(int mask) { this.mask = mask; } |
| public boolean contains(int ch) { |
| return ((1 << UCharacter.getType(ch)) & mask) != 0; |
| } |
| } |
| |
| private static class IntPropertyFilter implements Filter { |
| int prop; |
| int value; |
| IntPropertyFilter(int prop, int value) { |
| this.prop = prop; |
| this.value = value; |
| } |
| public boolean contains(int ch) { |
| return UCharacter.getIntPropertyValue(ch, prop) == value; |
| } |
| } |
| |
| // VersionInfo for unassigned characters |
| static final VersionInfo NO_VERSION = VersionInfo.getInstance(0, 0, 0, 0); |
| |
| private static class VersionFilter implements Filter { |
| VersionInfo version; |
| VersionFilter(VersionInfo version) { this.version = version; } |
| public boolean contains(int ch) { |
| VersionInfo v = UCharacter.getAge(ch); |
| // Reference comparison ok; VersionInfo caches and reuses |
| // unique objects. |
| return v != NO_VERSION && |
| v.compareTo(version) <= 0; |
| } |
| } |
| |
| private static synchronized UnicodeSet getInclusions() { |
| if (INCLUSIONS == null) { |
| UCharacterProperty property = UCharacterProperty.getInstance(); |
| INCLUSIONS = property.getInclusions(); |
| } |
| return INCLUSIONS; |
| } |
| |
| /** |
| * Generic filter-based scanning code for UCD property UnicodeSets. |
| */ |
| private UnicodeSet applyFilter(Filter filter) { |
| // Walk through all Unicode characters, noting the start |
| // and end of each range for which filter.contain(c) is |
| // true. Add each range to a set. |
| // |
| // To improve performance, use the INCLUSIONS set, which |
| // encodes information about character ranges that are known |
| // to have identical properties, such as the CJK Ideographs |
| // from U+4E00 to U+9FA5. INCLUSIONS contains all characters |
| // except the first characters of such ranges. |
| // |
| // TODO Where possible, instead of scanning over code points, |
| // use internal property data to initialize UnicodeSets for |
| // those properties. Scanning code points is slow. |
| |
| clear(); |
| |
| int startHasProperty = -1; |
| UnicodeSet inclusions = getInclusions(); |
| int limitRange = inclusions.getRangeCount(); |
| |
| for (int j=0; j<limitRange; ++j) { |
| // get current range |
| int start = inclusions.getRangeStart(j); |
| int end = inclusions.getRangeEnd(j); |
| |
| // for all the code points in the range, process |
| for (int ch = start; ch <= end; ++ch) { |
| // only add to the unicodeset on inflection points -- |
| // where the hasProperty value changes to false |
| if (filter.contains(ch)) { |
| if (startHasProperty < 0) { |
| startHasProperty = ch; |
| } |
| } else if (startHasProperty >= 0) { |
| add(startHasProperty, ch-1); |
| startHasProperty = -1; |
| } |
| } |
| } |
| if (startHasProperty >= 0) { |
| add(startHasProperty, 0x10FFFF); |
| } |
| |
| return this; |
| } |
| |
| |
| /** |
| * Remove leading and trailing rule white space and compress |
| * internal rule white space to a single space character. |
| * |
| * @see UCharacterProperty#isRuleWhiteSpace |
| */ |
| private static String mungeCharName(String source) { |
| StringBuffer buf = new StringBuffer(); |
| for (int i=0; i<source.length(); ) { |
| int ch = UTF16.charAt(source, i); |
| i += UTF16.getCharCount(ch); |
| if (UCharacterProperty.isRuleWhiteSpace(ch)) { |
| if (buf.length() == 0 || |
| buf.charAt(buf.length() - 1) == ' ') { |
| continue; |
| } |
| ch = ' '; // convert to ' ' |
| } |
| UTF16.append(buf, ch); |
| } |
| if (buf.length() != 0 && |
| buf.charAt(buf.length() - 1) == ' ') { |
| buf.setLength(buf.length() - 1); |
| } |
| return buf.toString(); |
| } |
| |
| //---------------------------------------------------------------- |
| // Property set API |
| //---------------------------------------------------------------- |
| |
| /** |
| * Modifies this set to contain those code points which have the |
| * given value for the given binary or enumerated property, as |
| * returned by UCharacter.getIntPropertyValue. Prior contents of |
| * this set are lost. |
| * |
| * @param prop a property in the range |
| * UProperty.BIN_START..UProperty.BIN_LIMIT-1 or |
| * UProperty.INT_START..UProperty.INT_LIMIT-1 or. |
| * UProperty.MASK_START..UProperty.MASK_LIMIT-1. |
| * |
| * @param value a value in the range |
| * UCharacter.getIntPropertyMinValue(prop).. |
| * UCharacter.getIntPropertyMaxValue(prop), with one exception. |
| * If prop is UProperty.GENERAL_CATEGORY_MASK, then value should not be |
| * a UCharacter.getType() result, but rather a mask value produced |
| * by logically ORing (1 << UCharacter.getType()) values together. |
| * This allows grouped categories such as [:L:] to be represented. |
| * |
| * @return a reference to this set |
| * |
| * @draft ICU 2.4 |
| */ |
| public UnicodeSet applyIntPropertyValue(int prop, int value) { |
| if (prop == UProperty.GENERAL_CATEGORY_MASK) { |
| applyFilter(new GeneralCategoryMaskFilter(value)); |
| } else { |
| applyFilter(new IntPropertyFilter(prop, value)); |
| } |
| return this; |
| } |
| |
| /** |
| * Modifies this set to contain those code points which have the |
| * given value for the given property. Prior contents of this |
| * set are lost. |
| * |
| * @param propertyAlias a property alias, either short or long. |
| * The name is matched loosely. See PropertyAliases.txt for names |
| * and a description of loose matching. If the value string is |
| * empty, then this string is interpreted as either a |
| * General_Category value alias, a Script value alias, a binary |
| * property alias, or a special ID. Special IDs are matched |
| * loosely and correspond to the following sets: |
| * |
| * "ANY" = [\u0000-\U0010FFFF], |
| * "ASCII" = [\u0000-\u007F]. |
| * |
| * @param valueAlias a value alias, either short or long. The |
| * name is matched loosely. See PropertyValueAliases.txt for |
| * names and a description of loose matching. In addition to |
| * aliases listed, numeric values and canonical combining classes |
| * may be expressed numerically, e.g., ("nv", "0.5") or ("ccc", |
| * "220"). The value string may also be empty. |
| * |
| * @return a reference to this set |
| * |
| * @draft ICU 2.4 |
| */ |
| public UnicodeSet applyPropertyAlias(String propertyAlias, |
| String valueAlias) { |
| int p; |
| int v; |
| boolean mustNotBeEmpty = false; |
| |
| if (valueAlias.length() > 0) { |
| p = UCharacter.getPropertyEnum(propertyAlias); |
| |
| // Treat gc as gcm |
| if (p == UProperty.GENERAL_CATEGORY) { |
| p = UProperty.GENERAL_CATEGORY_MASK; |
| } |
| |
| if ((p >= UProperty.BINARY_START && p < UProperty.BINARY_LIMIT) || |
| (p >= UProperty.INT_START && p < UProperty.INT_LIMIT) || |
| (p >= UProperty.MASK_START && p < UProperty.MASK_LIMIT)) { |
| try { |
| v = UCharacter.getPropertyValueEnum(p, valueAlias); |
| } catch (IllegalArgumentException e) { |
| // Handle numeric CCC |
| if (p == UProperty.CANONICAL_COMBINING_CLASS) { |
| v = Integer.parseInt(Utility.deleteRuleWhiteSpace(valueAlias)); |
| // If the resultant set is empty then the numeric value |
| // was invalid. |
| mustNotBeEmpty = true; |
| } else { |
| throw e; |
| } |
| } |
| } |
| |
| else { |
| |
| switch (p) { |
| case UProperty.NUMERIC_VALUE: |
| { |
| double value = Double.parseDouble(Utility.deleteRuleWhiteSpace(valueAlias)); |
| applyFilter(new NumericValueFilter(value)); |
| return this; |
| } |
| case UProperty.NAME: |
| case UProperty.UNICODE_1_NAME: |
| { |
| // Must munge name, since |
| // UCharacter.charFromName() does not do |
| // 'loose' matching. |
| String buf = mungeCharName(valueAlias); |
| int ch = |
| (p == UProperty.NAME) ? |
| UCharacter.getCharFromExtendedName(buf) : |
| UCharacter.getCharFromName1_0(buf); |
| if (ch == -1) { |
| throw new IllegalArgumentException("Invalid character name"); |
| } |
| clear(); |
| add(ch); |
| return this; |
| } |
| case UProperty.AGE: |
| { |
| // Must munge name, since |
| // VersionInfo.getInstance() does not do |
| // 'loose' matching. |
| VersionInfo version = VersionInfo.getInstance(mungeCharName(valueAlias)); |
| applyFilter(new VersionFilter(version)); |
| return this; |
| } |
| } |
| |
| // p is a non-binary, non-enumerated property that we |
| // don't support (yet). |
| throw new IllegalArgumentException("Unsupported property"); |
| } |
| } |
| |
| else { |
| // valueAlias is empty. Interpret as General Category, Script, |
| // Binary property, or ANY or ASCII. Upon success, p and v will |
| // be set. |
| try { |
| p = UProperty.GENERAL_CATEGORY_MASK; |
| v = UCharacter.getPropertyValueEnum(p, propertyAlias); |
| } catch (IllegalArgumentException e) { |
| try { |
| p = UProperty.SCRIPT; |
| v = UCharacter.getPropertyValueEnum(p, propertyAlias); |
| } catch (IllegalArgumentException e2) { |
| try { |
| p = UCharacter.getPropertyEnum(propertyAlias); |
| } catch (IllegalArgumentException e3) { |
| p = -1; |
| } |
| if (p >= UProperty.BINARY_START && p < UProperty.BINARY_LIMIT) { |
| v = 1; |
| } else if (p == -1) { |
| if (0 == UPropertyAliases.compare(ANY_ID, propertyAlias)) { |
| set(MIN_VALUE, MAX_VALUE); |
| return this; |
| } else if (0 == UPropertyAliases.compare(ASCII_ID, propertyAlias)) { |
| set(0, 0x7F); |
| return this; |
| } else { |
| // Property name was never matched. |
| throw new IllegalArgumentException("Invalid property alias: " + propertyAlias + "=" + valueAlias); |
| } |
| } else { |
| // Valid propery name, but it isn't binary, so the value |
| // must be supplied. |
| throw new IllegalArgumentException("Missing property value"); |
| } |
| } |
| } |
| } |
| |
| applyIntPropertyValue(p, v); |
| |
| if (mustNotBeEmpty && isEmpty()) { |
| // mustNotBeEmpty is set to true if an empty set indicates |
| // invalid input. |
| throw new IllegalArgumentException("Invalid property value"); |
| } |
| |
| return this; |
| } |
| |
| //---------------------------------------------------------------- |
| // Property set patterns |
| //---------------------------------------------------------------- |
| |
| /** |
| * Return true if the given position, in the given pattern, appears |
| * to be the start of a property set pattern. |
| */ |
| private static boolean resemblesPropertyPattern(String pattern, int pos) { |
| // Patterns are at least 5 characters long |
| if ((pos+5) > pattern.length()) { |
| return false; |
| } |
| |
| // Look for an opening [:, [:^, \p, or \P |
| return pattern.regionMatches(pos, "[:", 0, 2) || |
| pattern.regionMatches(true, pos, "\\p", 0, 2) || |
| pattern.regionMatches(pos, "\\N", 0, 2); |
| } |
| |
| /** |
| * Return true if the given iterator appears to point at a |
| * property pattern. Regardless of the result, return with the |
| * iterator unchanged. |
| * @param chars iterator over the pattern characters. Upon return |
| * it will be unchanged. |
| * @param iterOpts RuleCharacterIterator options |
| */ |
| private static boolean resemblesPropertyPattern(RuleCharacterIterator chars, |
| int iterOpts) { |
| boolean result = false; |
| iterOpts &= ~RuleCharacterIterator.PARSE_ESCAPES; |
| Object pos = chars.getPos(null); |
| int c = chars.next(iterOpts); |
| if (c == '[' || c == '\\') { |
| int d = chars.next(iterOpts & ~RuleCharacterIterator.SKIP_WHITESPACE); |
| result = (c == '[') ? (d == ':') : |
| (d == 'N' || d == 'p' || d == 'P'); |
| } |
| chars.setPos(pos); |
| return result; |
| } |
| |
| /** |
| * Parse the given property pattern at the given parse position. |
| */ |
| private UnicodeSet applyPropertyPattern(String pattern, ParsePosition ppos) { |
| int pos = ppos.getIndex(); |
| |
| // On entry, ppos should point to one of the following locations: |
| |
| // Minimum length is 5 characters, e.g. \p{L} |
| if ((pos+5) > pattern.length()) { |
| return null; |
| } |
| |
| boolean posix = false; // true for [:pat:], false for \p{pat} \P{pat} \N{pat} |
| boolean isName = false; // true for \N{pat}, o/w false |
| boolean invert = false; |
| |
| // Look for an opening [:, [:^, \p, or \P |
| if (pattern.regionMatches(pos, "[:", 0, 2)) { |
| posix = true; |
| pos = Utility.skipWhitespace(pattern, pos+2); |
| if (pos < pattern.length() && pattern.charAt(pos) == '^') { |
| ++pos; |
| invert = true; |
| } |
| } else if (pattern.regionMatches(true, pos, "\\p", 0, 2) || |
| pattern.regionMatches(pos, "\\N", 0, 2)) { |
| char c = pattern.charAt(pos+1); |
| invert = (c == 'P'); |
| isName = (c == 'N'); |
| pos = Utility.skipWhitespace(pattern, pos+2); |
| if (pos == pattern.length() || pattern.charAt(pos++) != '{') { |
| // Syntax error; "\p" or "\P" not followed by "{" |
| return null; |
| } |
| } else { |
| // Open delimiter not seen |
| return null; |
| } |
| |
| // Look for the matching close delimiter, either :] or } |
| int close = pattern.indexOf(posix ? ":]" : "}", pos); |
| if (close < 0) { |
| // Syntax error; close delimiter missing |
| return null; |
| } |
| |
| // Look for an '=' sign. If this is present, we will parse a |
| // medium \p{gc=Cf} or long \p{GeneralCategory=Format} |
| // pattern. |
| int equals = pattern.indexOf('=', pos); |
| String propName, valueName; |
| if (equals >= 0 && equals < close && !isName) { |
| // Equals seen; parse medium/long pattern |
| propName = pattern.substring(pos, equals); |
| valueName = pattern.substring(equals+1, close); |
| } |
| |
| else { |
| // Handle case where no '=' is seen, and \N{} |
| propName = pattern.substring(pos, close); |
| valueName = ""; |
| |
| // Handle \N{name} |
| if (isName) { |
| // This is a little inefficient since it means we have to |
| // parse "na" back to UProperty.NAME even though we already |
| // know it's UProperty.NAME. If we refactor the API to |
| // support args of (int, String) then we can remove |
| // "na" and make this a little more efficient. |
| valueName = propName; |
| propName = "na"; |
| } |
| } |
| |
| applyPropertyAlias(propName, valueName); |
| |
| if (invert) { |
| complement(); |
| } |
| |
| // Move to the limit position after the close delimiter |
| ppos.setIndex(close + (posix ? 2 : 1)); |
| |
| return this; |
| } |
| |
| /** |
| * Parse a property pattern. |
| * @param chars iterator over the pattern characters. Upon return |
| * it will be advanced to the first character after the parsed |
| * pattern, or the end of the iteration if all characters are |
| * parsed. |
| * @param rebuiltPat the pattern that was parsed, rebuilt or |
| * copied from the input pattern, as appropriate. |
| */ |
| private void applyPropertyPattern(RuleCharacterIterator chars, |
| StringBuffer rebuiltPat) { |
| String pat = chars.lookahead(); |
| ParsePosition pos = new ParsePosition(0); |
| applyPropertyPattern(pat, pos); |
| if (pos.getIndex() == 0) { |
| syntaxError(chars, "Invalid property pattern"); |
| } |
| chars.jumpahead(pos.getIndex()); |
| rebuiltPat.append(pat.substring(0, pos.getIndex())); |
| } |
| |
| //---------------------------------------------------------------- |
| // Case folding API |
| //---------------------------------------------------------------- |
| |
| // NOTE: The closeOver API, originally slated for 2.6, was |
| // withdrawn to allow for modifications under discussion. |
| |
| /** |
| * Bitmask for constructor and applyPattern() indicating that |
| * white space should be ignored. If set, ignore characters for |
| * which UCharacterProperty.isRuleWhiteSpace() returns true, |
| * unless they are quoted or escaped. This may be ORed together |
| * with other selectors. |
| * @internal |
| */ |
| public static final int IGNORE_SPACE = 1; |
| |
| /** |
| * Bitmask for constructor, applyPattern(), and closeOver() |
| * indicating letter case. This may be ORed together with other |
| * selectors. |
| * @internal |
| */ |
| public static final int CASE = 2; |
| |
| /** |
| * Close this set over the given attribute. For the attribute |
| * CASE, the result is to modify this set so that: |
| * |
| * 1. For each character or string 'a' in this set, all strings |
| * 'b' such that foldCase(a) == foldCase(b) are added to this set. |
| * (For most 'a' that are single characters, 'b' will have |
| * b.length() == 1.) |
| * |
| * 2. For each string 'e' in the resulting set, if e != |
| * foldCase(e), 'e' will be removed. |
| * |
| * Example: [aq\u00DF{Bc}{bC}{Fi}] => [aAqQ\u00DF\uFB01{ss}{bc}{fi}] |
| * |
| * (Here foldCase(x) refers to the operation |
| * UCharacter.foldCase(x, true), and a == b actually denotes |
| * a.equals(b), not pointer comparison.) |
| * |
| * @param attribute bitmask for attributes to close over. |
| * Currently only the CASE bit is supported. Any undefined bits |
| * are ignored. |
| * @return a reference to this set. |
| * @internal |
| */ |
| public UnicodeSet closeOver(int attribute) { |
| if ((attribute & CASE) != 0) { |
| UnicodeSet foldSet = new UnicodeSet(); |
| int n = getRangeCount(); |
| for (int i=0; i<n; ++i) { |
| int start = getRangeStart(i); |
| int end = getRangeEnd(i); |
| for (int cp=start; cp<=end; ++cp) { |
| foldSet.caseCloseOne(UTF16.valueOf(cp)); |
| } |
| } |
| if (strings.size() > 0) { |
| Iterator it = strings.iterator(); |
| while (it.hasNext()) { |
| foldSet.caseCloseOne( |
| UCharacter.foldCase((String) it.next(), DEFAULT_CASE_MAP)); |
| } |
| } |
| set(foldSet); |
| } |
| return this; |
| } |
| |
| //---------------------------------------------------------------- |
| // Case folding implementation |
| //---------------------------------------------------------------- |
| |
| /** |
| * Add to this set all members of the case fold equivalency class |
| * that contains 'folded'. |
| * @param folded a string within a case fold equivalency class. |
| * It must have the property that UCharacter.foldCase(folded, |
| * DEFAULT_CASE_MAP).equals(folded). |
| */ |
| private void caseCloseOne(String folded) { |
| // Look up equivalency class |
| String[] equiv = (String[]) CASE_EQUIV_CLASS.get(folded); |
| if (equiv == null) { |
| // If there is no entry then the equivalency class |
| // contains only 'folded' itself. |
| add(folded); |
| } else { |
| for (int i=0; i<equiv.length; ++i) { |
| add(equiv[i]); |
| } |
| } |
| } |
| |
| /** |
| * Map from string to case folding equivalence class. |
| * |
| * A case folding equivalence class contains all strings (single |
| * characters are represented as strings of length 1) which map to |
| * the same value via UCharacter.foldCase(x, DEFAULT_CASE_MAP). |
| * Note that for multicharacter strings, only the 'identity' |
| * variant is included {the variant x for which |
| * UCharacter.foldCase(x, DEFAULT_CASE_MAP).equals(x)}. For |
| * example, in the equivalence class { \uFB01, fi }, the entries { |
| * Fi, fI, FI } are not included. |
| * |
| * Given an equivalence class, each member of the class is a key |
| * in this map. They all map to the same Java reference v, which |
| * is a String[] array. For example, |
| * |
| * MAP.get("\uFB01") == MAP.get("fi") == String[] { "fi", "\uFB01" } |
| * |
| * Note that == here is a reference comparison, not an equals() |
| * comparison. This reduces memory requirements. |
| */ |
| private static Map CASE_EQUIV_CLASS = null; |
| |
| private static final boolean DEFAULT_CASE_MAP = true; // false for Turkish |
| |
| // Machine-generated case fold equivalency class data. To |
| // regenerate (when the Unicode database changes, or when |
| // DEFAULT_CASE_MAP is changed), set CASE_GENERATE to true and |
| // load this class. The new data will be emitted to System.out. |
| |
| // MACHINE-GENERATED: Do not edit |
| private static final String CASE_PAIRS = |
| "AaBbCcDdEeFfGgHhIiJjLlMmNnOoPpQqRrTtUuVvWwXxYyZz\u00C0\u00E0\u00C1\u00E1"+ |
| "\u00C2\u00E2\u00C3\u00E3\u00C4\u00E4\u00C6\u00E6\u00C7\u00E7\u00C8\u00E8"+ |
| "\u00C9\u00E9\u00CA\u00EA\u00CB\u00EB\u00CC\u00EC\u00CD\u00ED\u00CE\u00EE"+ |
| "\u00CF\u00EF\u00D0\u00F0\u00D1\u00F1\u00D2\u00F2\u00D3\u00F3\u00D4\u00F4"+ |
| "\u00D5\u00F5\u00D6\u00F6\u00D8\u00F8\u00D9\u00F9\u00DA\u00FA\u00DB\u00FB"+ |
| "\u00DC\u00FC\u00DD\u00FD\u00DE\u00FE\u00FF\u0178\u0100\u0101\u0102\u0103"+ |
| "\u0104\u0105\u0106\u0107\u0108\u0109\u010A\u010B\u010C\u010D\u010E\u010F"+ |
| "\u0110\u0111\u0112\u0113\u0114\u0115\u0116\u0117\u0118\u0119\u011A\u011B"+ |
| "\u011C\u011D\u011E\u011F\u0120\u0121\u0122\u0123\u0124\u0125\u0126\u0127"+ |
| "\u0128\u0129\u012A\u012B\u012C\u012D\u012E\u012F\u0132\u0133\u0134\u0135"+ |
| "\u0136\u0137\u0139\u013A\u013B\u013C\u013D\u013E\u013F\u0140\u0141\u0142"+ |
| "\u0143\u0144\u0145\u0146\u0147\u0148\u014A\u014B\u014C\u014D\u014E\u014F"+ |
| "\u0150\u0151\u0152\u0153\u0154\u0155\u0156\u0157\u0158\u0159\u015A\u015B"+ |
| "\u015C\u015D\u015E\u015F\u0160\u0161\u0162\u0163\u0164\u0165\u0166\u0167"+ |
| "\u0168\u0169\u016A\u016B\u016C\u016D\u016E\u016F\u0170\u0171\u0172\u0173"+ |
| "\u0174\u0175\u0176\u0177\u0179\u017A\u017B\u017C\u017D\u017E\u0182\u0183"+ |
| "\u0184\u0185\u0187\u0188\u018B\u018C\u0191\u0192\u0195\u01F6\u0198\u0199"+ |
| "\u019E\u0220\u01A0\u01A1\u01A2\u01A3\u01A4\u01A5\u01A7\u01A8\u01AC\u01AD"+ |
| "\u01AF\u01B0\u01B3\u01B4\u01B5\u01B6\u01B8\u01B9\u01BC\u01BD\u01BF\u01F7"+ |
| "\u01CD\u01CE\u01CF\u01D0\u01D1\u01D2\u01D3\u01D4\u01D5\u01D6\u01D7\u01D8"+ |
| "\u01D9\u01DA\u01DB\u01DC\u018E\u01DD\u01DE\u01DF\u01E0\u01E1\u01E2\u01E3"+ |
| "\u01E4\u01E5\u01E6\u01E7\u01E8\u01E9\u01EA\u01EB\u01EC\u01ED\u01EE\u01EF"+ |
| "\u01F4\u01F5\u01F8\u01F9\u01FA\u01FB\u01FC\u01FD\u01FE\u01FF\u0200\u0201"+ |
| "\u0202\u0203\u0204\u0205\u0206\u0207\u0208\u0209\u020A\u020B\u020C\u020D"+ |
| "\u020E\u020F\u0210\u0211\u0212\u0213\u0214\u0215\u0216\u0217\u0218\u0219"+ |
| "\u021A\u021B\u021C\u021D\u021E\u021F\u0222\u0223\u0224\u0225\u0226\u0227"+ |
| "\u0228\u0229\u022A\u022B\u022C\u022D\u022E\u022F\u0230\u0231\u0232\u0233"+ |
| "\u0181\u0253\u0186\u0254\u0189\u0256\u018A\u0257\u018F\u0259\u0190\u025B"+ |
| "\u0193\u0260\u0194\u0263\u0197\u0268\u0196\u0269\u019C\u026F\u019D\u0272"+ |
| "\u019F\u0275\u01A6\u0280\u01A9\u0283\u01AE\u0288\u01B1\u028A\u01B2\u028B"+ |
| "\u01B7\u0292\u0386\u03AC\u0388\u03AD\u0389\u03AE\u038A\u03AF\u0391\u03B1"+ |
| "\u0393\u03B3\u0394\u03B4\u0396\u03B6\u0397\u03B7\u039B\u03BB\u039D\u03BD"+ |
| "\u039E\u03BE\u039F\u03BF\u03A4\u03C4\u03A5\u03C5\u03A7\u03C7\u03A8\u03C8"+ |
| "\u03AA\u03CA\u03AB\u03CB\u038C\u03CC\u038E\u03CD\u038F\u03CE\u03D8\u03D9"+ |
| "\u03DA\u03DB\u03DC\u03DD\u03DE\u03DF\u03E0\u03E1\u03E2\u03E3\u03E4\u03E5"+ |
| "\u03E6\u03E7\u03E8\u03E9\u03EA\u03EB\u03EC\u03ED\u03EE\u03EF\u0410\u0430"+ |
| "\u0411\u0431\u0412\u0432\u0413\u0433\u0414\u0434\u0415\u0435\u0416\u0436"+ |
| "\u0417\u0437\u0418\u0438\u0419\u0439\u041A\u043A\u041B\u043B\u041C\u043C"+ |
| "\u041D\u043D\u041E\u043E\u041F\u043F\u0420\u0440\u0421\u0441\u0422\u0442"+ |
| "\u0423\u0443\u0424\u0444\u0425\u0445\u0426\u0446\u0427\u0447\u0428\u0448"+ |
| "\u0429\u0449\u042A\u044A\u042B\u044B\u042C\u044C\u042D\u044D\u042E\u044E"+ |
| "\u042F\u044F\u0400\u0450\u0401\u0451\u0402\u0452\u0403\u0453\u0404\u0454"+ |
| "\u0405\u0455\u0406\u0456\u0407\u0457\u0408\u0458\u0409\u0459\u040A\u045A"+ |
| "\u040B\u045B\u040C\u045C\u040D\u045D\u040E\u045E\u040F\u045F\u0460\u0461"+ |
| "\u0462\u0463\u0464\u0465\u0466\u0467\u0468\u0469\u046A\u046B\u046C\u046D"+ |
| "\u046E\u046F\u0470\u0471\u0472\u0473\u0474\u0475\u0476\u0477\u0478\u0479"+ |
| "\u047A\u047B\u047C\u047D\u047E\u047F\u0480\u0481\u048A\u048B\u048C\u048D"+ |
| "\u048E\u048F\u0490\u0491\u0492\u0493\u0494\u0495\u0496\u0497\u0498\u0499"+ |
| "\u049A\u049B\u049C\u049D\u049E\u049F\u04A0\u04A1\u04A2\u04A3\u04A4\u04A5"+ |
| "\u04A6\u04A7\u04A8\u04A9\u04AA\u04AB\u04AC\u04AD\u04AE\u04AF\u04B0\u04B1"+ |
| "\u04B2\u04B3\u04B4\u04B5\u04B6\u04B7\u04B8\u04B9\u04BA\u04BB\u04BC\u04BD"+ |
| "\u04BE\u04BF\u04C1\u04C2\u04C3\u04C4\u04C5\u04C6\u04C7\u04C8\u04C9\u04CA"+ |
| "\u04CB\u04CC\u04CD\u04CE\u04D0\u04D1\u04D2\u04D3\u04D4\u04D5\u04D6\u04D7"+ |
| "\u04D8\u04D9\u04DA\u04DB\u04DC\u04DD\u04DE\u04DF\u04E0\u04E1\u04E2\u04E3"+ |
| "\u04E4\u04E5\u04E6\u04E7\u04E8\u04E9\u04EA\u04EB\u04EC\u04ED\u04EE\u04EF"+ |
| "\u04F0\u04F1\u04F2\u04F3\u04F4\u04F5\u04F8\u04F9\u0500\u0501\u0502\u0503"+ |
| "\u0504\u0505\u0506\u0507\u0508\u0509\u050A\u050B\u050C\u050D\u050E\u050F"+ |
| "\u0531\u0561\u0532\u0562\u0533\u0563\u0534\u0564\u0535\u0565\u0536\u0566"+ |
| "\u0537\u0567\u0538\u0568\u0539\u0569\u053A\u056A\u053B\u056B\u053C\u056C"+ |
| "\u053D\u056D\u053E\u056E\u053F\u056F\u0540\u0570\u0541\u0571\u0542\u0572"+ |
| "\u0543\u0573\u0544\u0574\u0545\u0575\u0546\u0576\u0547\u0577\u0548\u0578"+ |
| "\u0549\u0579\u054A\u057A\u054B\u057B\u054C\u057C\u054D\u057D\u054E\u057E"+ |
| "\u054F\u057F\u0550\u0580\u0551\u0581\u0552\u0582\u0553\u0583\u0554\u0584"+ |
| "\u0555\u0585\u0556\u0586\u1E00\u1E01\u1E02\u1E03\u1E04\u1E05\u1E06\u1E07"+ |
| "\u1E08\u1E09\u1E0A\u1E0B\u1E0C\u1E0D\u1E0E\u1E0F\u1E10\u1E11\u1E12\u1E13"+ |
| "\u1E14\u1E15\u1E16\u1E17\u1E18\u1E19\u1E1A\u1E1B\u1E1C\u1E1D\u1E1E\u1E1F"+ |
| "\u1E20\u1E21\u1E22\u1E23\u1E24\u1E25\u1E26\u1E27\u1E28\u1E29\u1E2A\u1E2B"+ |
| "\u1E2C\u1E2D\u1E2E\u1E2F\u1E30\u1E31\u1E32\u1E33\u1E34\u1E35\u1E36\u1E37"+ |
| "\u1E38\u1E39\u1E3A\u1E3B\u1E3C\u1E3D\u1E3E\u1E3F\u1E40\u1E41\u1E42\u1E43"+ |
| "\u1E44\u1E45\u1E46\u1E47\u1E48\u1E49\u1E4A\u1E4B\u1E4C\u1E4D\u1E4E\u1E4F"+ |
| "\u1E50\u1E51\u1E52\u1E53\u1E54\u1E55\u1E56\u1E57\u1E58\u1E59\u1E5A\u1E5B"+ |
| "\u1E5C\u1E5D\u1E5E\u1E5F\u1E62\u1E63\u1E64\u1E65\u1E66\u1E67\u1E68\u1E69"+ |
| "\u1E6A\u1E6B\u1E6C\u1E6D\u1E6E\u1E6F\u1E70\u1E71\u1E72\u1E73\u1E74\u1E75"+ |
| "\u1E76\u1E77\u1E78\u1E79\u1E7A\u1E7B\u1E7C\u1E7D\u1E7E\u1E7F\u1E80\u1E81"+ |
| "\u1E82\u1E83\u1E84\u1E85\u1E86\u1E87\u1E88\u1E89\u1E8A\u1E8B\u1E8C\u1E8D"+ |
| "\u1E8E\u1E8F\u1E90\u1E91\u1E92\u1E93\u1E94\u1E95\u1EA0\u1EA1\u1EA2\u1EA3"+ |
| "\u1EA4\u1EA5\u1EA6\u1EA7\u1EA8\u1EA9\u1EAA\u1EAB\u1EAC\u1EAD\u1EAE\u1EAF"+ |
| "\u1EB0\u1EB1\u1EB2\u1EB3\u1EB4\u1EB5\u1EB6\u1EB7\u1EB8\u1EB9\u1EBA\u1EBB"+ |
| "\u1EBC\u1EBD\u1EBE\u1EBF\u1EC0\u1EC1\u1EC2\u1EC3\u1EC4\u1EC5\u1EC6\u1EC7"+ |
| "\u1EC8\u1EC9\u1ECA\u1ECB\u1ECC\u1ECD\u1ECE\u1ECF\u1ED0\u1ED1\u1ED2\u1ED3"+ |
| "\u1ED4\u1ED5\u1ED6\u1ED7\u1ED8\u1ED9\u1EDA\u1EDB\u1EDC\u1EDD\u1EDE\u1EDF"+ |
| "\u1EE0\u1EE1\u1EE2\u1EE3\u1EE4\u1EE5\u1EE6\u1EE7\u1EE8\u1EE9\u1EEA\u1EEB"+ |
| "\u1EEC\u1EED\u1EEE\u1EEF\u1EF0\u1EF1\u1EF2\u1EF3\u1EF4\u1EF5\u1EF6\u1EF7"+ |
| "\u1EF8\u1EF9\u1F00\u1F08\u1F01\u1F09\u1F02\u1F0A\u1F03\u1F0B\u1F04\u1F0C"+ |
| "\u1F05\u1F0D\u1F06\u1F0E\u1F07\u1F0F\u1F10\u1F18\u1F11\u1F19\u1F12\u1F1A"+ |
| "\u1F13\u1F1B\u1F14\u1F1C\u1F15\u1F1D\u1F20\u1F28\u1F21\u1F29\u1F22\u1F2A"+ |
| "\u1F23\u1F2B\u1F24\u1F2C\u1F25\u1F2D\u1F26\u1F2E\u1F27\u1F2F\u1F30\u1F38"+ |
| "\u1F31\u1F39\u1F32\u1F3A\u1F33\u1F3B\u1F34\u1F3C\u1F35\u1F3D\u1F36\u1F3E"+ |
| "\u1F37\u1F3F\u1F40\u1F48\u1F41\u1F49\u1F42\u1F4A\u1F43\u1F4B\u1F44\u1F4C"+ |
| "\u1F45\u1F4D\u1F51\u1F59\u1F53\u1F5B\u1F55\u1F5D\u1F57\u1F5F\u1F60\u1F68"+ |
| "\u1F61\u1F69\u1F62\u1F6A\u1F63\u1F6B\u1F64\u1F6C\u1F65\u1F6D\u1F66\u1F6E"+ |
| "\u1F67\u1F6F\u1F70\u1FBA\u1F71\u1FBB\u1F72\u1FC8\u1F73\u1FC9\u1F74\u1FCA"+ |
| "\u1F75\u1FCB\u1F76\u1FDA\u1F77\u1FDB\u1F78\u1FF8\u1F79\u1FF9\u1F7A\u1FEA"+ |
| "\u1F7B\u1FEB\u1F7C\u1FFA\u1F7D\u1FFB\u1FB0\u1FB8\u1FB1\u1FB9\u1FD0\u1FD8"+ |
| "\u1FD1\u1FD9\u1FE0\u1FE8\u1FE1\u1FE9\u1FE5\u1FEC\u2160\u2170\u2161\u2171"+ |
| "\u2162\u2172\u2163\u2173\u2164\u2174\u2165\u2175\u2166\u2176\u2167\u2177"+ |
| "\u2168\u2178\u2169\u2179\u216A\u217A\u216B\u217B\u216C\u217C\u216D\u217D"+ |
| "\u216E\u217E\u216F\u217F\u24B6\u24D0\u24B7\u24D1\u24B8\u24D2\u24B9\u24D3"+ |
| "\u24BA\u24D4\u24BB\u24D5\u24BC\u24D6\u24BD\u24D7\u24BE\u24D8\u24BF\u24D9"+ |
| "\u24C0\u24DA\u24C1\u24DB\u24C2\u24DC\u24C3\u24DD\u24C4\u24DE\u24C5\u24DF"+ |
| "\u24C6\u24E0\u24C7\u24E1\u24C8\u24E2\u24C9\u24E3\u24CA\u24E4\u24CB\u24E5"+ |
| "\u24CC\u24E6\u24CD\u24E7\u24CE\u24E8\u24CF\u24E9\uFF21\uFF41\uFF22\uFF42"+ |
| "\uFF23\uFF43\uFF24\uFF44\uFF25\uFF45\uFF26\uFF46\uFF27\uFF47\uFF28\uFF48"+ |
| "\uFF29\uFF49\uFF2A\uFF4A\uFF2B\uFF4B\uFF2C\uFF4C\uFF2D\uFF4D\uFF2E\uFF4E"+ |
| "\uFF2F\uFF4F\uFF30\uFF50\uFF31\uFF51\uFF32\uFF52\uFF33\uFF53\uFF34\uFF54"+ |
| "\uFF35\uFF55\uFF36\uFF56\uFF37\uFF57\uFF38\uFF58\uFF39\uFF59\uFF3A\uFF5A"; |
| |
| // MACHINE-GENERATED: Do not edit |
| private static final String[][] CASE_NONPAIRS = { |
| {"a\u02BE", "\u1E9A"}, |
| {"ff", "\uFB00"}, |
| {"ffi", "\uFB03"}, |
| {"ffl", "\uFB04"}, |
| {"fi", "\uFB01"}, |
| {"fl", "\uFB02"}, |
| {"h\u0331", "\u1E96"}, |
| {"i\u0307", "\u0130"}, |
| {"j\u030C", "\u01F0"}, |
| {"K", "k", "\u212A"}, |
| {"S", "s", "\u017F"}, |
| {"ss", "\u00DF"}, |
| {"st", "\uFB05", "\uFB06"}, |
| {"t\u0308", "\u1E97"}, |
| {"w\u030A", "\u1E98"}, |
| {"y\u030A", "\u1E99"}, |
| {"\u00C5", "\u00E5", "\u212B"}, |
| {"\u01C4", "\u01C5", "\u01C6"}, |
| {"\u01C7", "\u01C8", "\u01C9"}, |
| {"\u01CA", "\u01CB", "\u01CC"}, |
| {"\u01F1", "\u01F2", "\u01F3"}, |
| {"\u0149", "\u02BCn"}, |
| {"\u03AC\u03B9", "\u1FB4"}, |
| {"\u03AE\u03B9", "\u1FC4"}, |
| {"\u03B1\u0342", "\u1FB6"}, |
| {"\u03B1\u0342\u03B9", "\u1FB7"}, |
| {"\u03B1\u03B9", "\u1FB3", "\u1FBC"}, |
| {"\u0392", "\u03B2", "\u03D0"}, |
| {"\u0395", "\u03B5", "\u03F5"}, |
| {"\u03B7\u0342", "\u1FC6"}, |
| {"\u03B7\u0342\u03B9", "\u1FC7"}, |
| {"\u03B7\u03B9", "\u1FC3", "\u1FCC"}, |
| {"\u0398", "\u03B8", "\u03D1", "\u03F4"}, |
| {"\u0345", "\u0399", "\u03B9", "\u1FBE"}, |
| {"\u03B9\u0308\u0300", "\u1FD2"}, |
| {"\u0390", "\u03B9\u0308\u0301", "\u1FD3"}, |
| {"\u03B9\u0308\u0342", "\u1FD7"}, |
| {"\u03B9\u0342", "\u1FD6"}, |
| {"\u039A", "\u03BA", "\u03F0"}, |
| {"\u00B5", "\u039C", "\u03BC"}, |
| {"\u03A0", "\u03C0", "\u03D6"}, |
| {"\u03A1", "\u03C1", "\u03F1"}, |
| {"\u03C1\u0313", "\u1FE4"}, |
| {"\u03A3", "\u03C2", "\u03C3", "\u03F2"}, |
| {"\u03C5\u0308\u0300", "\u1FE2"}, |
| {"\u03B0", "\u03C5\u0308\u0301", "\u1FE3"}, |
| {"\u03C5\u0308\u0342", "\u1FE7"}, |
| {"\u03C5\u0313", "\u1F50"}, |
| {"\u03C5\u0313\u0300", "\u1F52"}, |
| {"\u03C5\u0313\u0301", "\u1F54"}, |
| {"\u03C5\u0313\u0342", "\u1F56"}, |
| {"\u03C5\u0342", "\u1FE6"}, |
| {"\u03A6", "\u03C6", "\u03D5"}, |
| {"\u03A9", "\u03C9", "\u2126"}, |
| {"\u03C9\u0342", "\u1FF6"}, |
| {"\u03C9\u0342\u03B9", "\u1FF7"}, |
| {"\u03C9\u03B9", "\u1FF3", "\u1FFC"}, |
| {"\u03CE\u03B9", "\u1FF4"}, |
| {"\u0565\u0582", "\u0587"}, |
| {"\u0574\u0565", "\uFB14"}, |
| {"\u0574\u056B", "\uFB15"}, |
| {"\u0574\u056D", "\uFB17"}, |
| {"\u0574\u0576", "\uFB13"}, |
| {"\u057E\u0576", "\uFB16"}, |
| {"\u1E60", "\u1E61", "\u1E9B"}, |
| {"\u1F00\u03B9", "\u1F80", "\u1F88"}, |
| {"\u1F01\u03B9", "\u1F81", "\u1F89"}, |
| {"\u1F02\u03B9", "\u1F82", "\u1F8A"}, |
| {"\u1F03\u03B9", "\u1F83", "\u1F8B"}, |
| {"\u1F04\u03B9", "\u1F84", "\u1F8C"}, |
| {"\u1F05\u03B9", "\u1F85", "\u1F8D"}, |
| {"\u1F06\u03B9", "\u1F86", "\u1F8E"}, |
| {"\u1F07\u03B9", "\u1F87", "\u1F8F"}, |
| {"\u1F20\u03B9", "\u1F90", "\u1F98"}, |
| {"\u1F21\u03B9", "\u1F91", "\u1F99"}, |
| {"\u1F22\u03B9", "\u1F92", "\u1F9A"}, |
| {"\u1F23\u03B9", "\u1F93", "\u1F9B"}, |
| {"\u1F24\u03B9", "\u1F94", "\u1F9C"}, |
| {"\u1F25\u03B9", "\u1F95", "\u1F9D"}, |
| {"\u1F26\u03B9", "\u1F96", "\u1F9E"}, |
| {"\u1F27\u03B9", "\u1F97", "\u1F9F"}, |
| {"\u1F60\u03B9", "\u1FA0", "\u1FA8"}, |
| {"\u1F61\u03B9", "\u1FA1", "\u1FA9"}, |
| {"\u1F62\u03B9", "\u1FA2", "\u1FAA"}, |
| {"\u1F63\u03B9", "\u1FA3", "\u1FAB"}, |
| {"\u1F64\u03B9", "\u1FA4", "\u1FAC"}, |
| {"\u1F65\u03B9", "\u1FA5", "\u1FAD"}, |
| {"\u1F66\u03B9", "\u1FA6", "\u1FAE"}, |
| {"\u1F67\u03B9", "\u1FA7", "\u1FAF"}, |
| {"\u1F70\u03B9", "\u1FB2"}, |
| {"\u1F74\u03B9", "\u1FC2"}, |
| {"\u1F7C\u03B9", "\u1FF2"}, |
| {"\uD801\uDC00", "\uD801\uDC28"}, |
| {"\uD801\uDC01", "\uD801\uDC29"}, |
| {"\uD801\uDC02", "\uD801\uDC2A"}, |
| {"\uD801\uDC03", "\uD801\uDC2B"}, |
| {"\uD801\uDC04", "\uD801\uDC2C"}, |
| {"\uD801\uDC05", "\uD801\uDC2D"}, |
| {"\uD801\uDC06", "\uD801\uDC2E"}, |
| {"\uD801\uDC07", "\uD801\uDC2F"}, |
| {"\uD801\uDC08", "\uD801\uDC30"}, |
| {"\uD801\uDC09", "\uD801\uDC31"}, |
| {"\uD801\uDC0A", "\uD801\uDC32"}, |
| {"\uD801\uDC0B", "\uD801\uDC33"}, |
| {"\uD801\uDC0C", "\uD801\uDC34"}, |
| {"\uD801\uDC0D", "\uD801\uDC35"}, |
| {"\uD801\uDC0E", "\uD801\uDC36"}, |
| {"\uD801\uDC0F", "\uD801\uDC37"}, |
| {"\uD801\uDC10", "\uD801\uDC38"}, |
| {"\uD801\uDC11", "\uD801\uDC39"}, |
| {"\uD801\uDC12", "\uD801\uDC3A"}, |
| {"\uD801\uDC13", "\uD801\uDC3B"}, |
| {"\uD801\uDC14", "\uD801\uDC3C"}, |
| {"\uD801\uDC15", "\uD801\uDC3D"}, |
| {"\uD801\uDC16", "\uD801\uDC3E"}, |
| {"\uD801\uDC17", "\uD801\uDC3F"}, |
| {"\uD801\uDC18", "\uD801\uDC40"}, |
| {"\uD801\uDC19", "\uD801\uDC41"}, |
| {"\uD801\uDC1A", "\uD801\uDC42"}, |
| {"\uD801\uDC1B", "\uD801\uDC43"}, |
| {"\uD801\uDC1C", "\uD801\uDC44"}, |
| {"\uD801\uDC1D", "\uD801\uDC45"}, |
| {"\uD801\uDC1E", "\uD801\uDC46"}, |
| {"\uD801\uDC1F", "\uD801\uDC47"}, |
| {"\uD801\uDC20", "\uD801\uDC48"}, |
| {"\uD801\uDC21", "\uD801\uDC49"}, |
| {"\uD801\uDC22", "\uD801\uDC4A"}, |
| {"\uD801\uDC23", "\uD801\uDC4B"}, |
| {"\uD801\uDC24", "\uD801\uDC4C"}, |
| {"\uD801\uDC25", "\uD801\uDC4D"}, |
| }; |
| |
| static { |
| // Create case-fold equivalency class map CASE_EQUIV_CLASS. |
| |
| // To regenerate the equivalency class data, see class |
| // com.ibm.icu.dev.tools.translit.UnicodeSetCloseOver. |
| |
| // Read the pre-compiled case fold equivalency classes. Store |
| // each class in a Map, so that for any equivalency class 'E', |
| // each member 'e' of the class has an entry: |
| // CASE_EQUIV_CLASS.get(e) == E, where 'E' is a reference to a |
| // String[] array. Because the same reference 'E' is used, |
| // there is only one in-memory instance of each equivalency |
| // class, with multiple pointers to it. This minimizes |
| // run-time memory cost. |
| |
| CASE_EQUIV_CLASS = new HashMap(); |
| // Add pairs. These are simple equivalency classes like {"a", "A"}. |
| int i; |
| for (i=0; i<CASE_PAIRS.length(); i+=2) { |
| String[] a = new String[2]; |
| a[0] = String.valueOf(CASE_PAIRS.charAt(i)); |
| a[1] = String.valueOf(CASE_PAIRS.charAt(i+1)); |
| CASE_EQUIV_CLASS.put(a[0], a); |
| CASE_EQUIV_CLASS.put(a[1], a); |
| } |
| // Add non-pairs. These are more complex equivalency classes |
| // like {"st", "\uFB05", "\uFB06"}. |
| for (i=0; i<CASE_NONPAIRS.length; ++i) { |
| String[] a = CASE_NONPAIRS[i]; |
| for (int j=0; j<a.length; ++j) { |
| CASE_EQUIV_CLASS.put(a[j], a); |
| } |
| } |
| } |
| } |