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- /*
- *******************************************************************************
- * *
- * COPYRIGHT: *
- * (C) Copyright Taligent, Inc., 1996 *
- * (C) Copyright International Business Machines Corporation, 1996-1999 *
- * Licensed Material - Program-Property of IBM - All Rights Reserved. *
- * US Government Users Restricted Rights - Use, duplication, or disclosure *
- * restricted by GSA ADP Schedule Contract with IBM Corp. *
- * *
- *******************************************************************************
- *
- * File tblcoll.h
- *
- * Created by: Helena Shih
- *
- * Modification History:
- *
- * Date Name Description
- * 2/5/97 aliu Added streamIn and streamOut methods. Added
- * constructor which reads RuleBasedCollator object from
- * a binary file. Added writeToFile method which streams
- * RuleBasedCollator out to a binary file. The streamIn
- * and streamOut methods use istream and ostream objects
- * in binary mode.
- * 2/12/97 aliu Modified to use TableCollationData sub-object to
- * hold invariant data.
- * 2/13/97 aliu Moved several methods into this class from Collation.
- * Added a private RuleBasedCollator(Locale&) constructor,
- * to be used by Collator::createDefault(). General
- * clean up.
- * 2/20/97 helena Added clone, operator==, operator!=, operator=, and copy
- * constructor and getDynamicClassID.
- * 3/5/97 aliu Modified constructFromFile() to add parameter
- * specifying whether or not binary loading is to be
- * attempted. This is required for dynamic rule loading.
- * 05/07/97 helena Added memory allocation error detection.
- * 6/17/97 helena Added IDENTICAL strength for compare, changed getRules to
- * use MergeCollation::getPattern.
- * 6/20/97 helena Java class name change.
- * 8/18/97 helena Added internal API documentation.
- * 09/03/97 helena Added createCollationKeyValues().
- * 02/10/98 damiba Added compare with "length" parameter
- * 08/05/98 erm Synched with 1.2 version of RuleBasedCollator.java
- * 04/23/99 stephen Removed EDecompositionMode, merged with
- * Normalizer::EMode
- * 06/14/99 stephen Removed kResourceBundleSuffix
- *
- *******************************************************************************
- */
-
- #ifndef TBLCOLL_H
- #define TBLCOLL_H
-
- #include "utypes.h"
- #include "coll.h"
- #include "chariter.h"
- #include "unistr.h"
- #include "sortkey.h"
- #include "normlzr.h"
-
- class VectorOfPToContractElement;
- class VectorOfInt;
- class VectorOfPToContractTable;
- class VectorOfPToExpandTable;
- class MergeCollation;
- class CollationElementIterator;
- class RuleBasedCollatorStreamer;
-
- /**
- * The RuleBasedCollator class provides the simple implementation of Collator,
- * using data-driven tables. The user can create a customized table-based
- * collation.
- * <P>
- * RuleBasedCollator maps characters to collation keys.
- * <p>
- * Table Collation has the following restrictions for efficiency (other
- * subclasses may be used for more complex languages) :
- * <p>1. If the French secondary ordering is specified in a collation object,
- * it is applied to the whole object.
- * <p>2. All non-mentioned Unicode characters are at the end of the
- * collation order.
- * <p>3. Private use characters are treated as identical. The private
- * use area in Unicode is 0xE800-0xF8FF.
- * <p>The collation table is composed of a list of collation rules, where each
- * rule is of three forms:
- * <pre>
- * . < modifier >
- * . < relation > < text-argument >
- * . < reset > < text-argument >
- * </pre>
- * The following demonstrates how to create your own collation rules:
- * <UL Type=round>
- * <LI><strong>Text Argument</strong>: A text argument is any sequence of
- * characters, excluding special characters (that is, whitespace
- * characters and the characters used in modifier, relation and reset).
- * If those characters are desired, you can put them in single quotes
- * (e.g. ampersand => '&').<P>
- * <LI><strong>Modifier</strong>: There is a single modifier,
- * which is used to specify that all secondary differences are
- * sorted backwards.
- * <p>'@' : Indicates that secondary differences, such as accents, are
- * sorted backwards, as in French.<P>
- * <LI><strong>Relation</strong>: The relations are the following:
- * <UL Type=square>
- * <LI>'<' : Greater, as a letter difference (primary)
- * <LI>';' : Greater, as an accent difference (secondary)
- * <LI>',' : Greater, as a case difference (tertiary)
- * <LI>'=' : Equal
- * </UL><P>
- * <LI><strong>Reset</strong>: There is a single reset,
- * which is used primarily for contractions and expansions, but which
- * can also be used to add a modification at the end of a set of rules.
- * <p>'&' : Indicates that the next rule follows the position to where
- * the reset text-argument would be sorted.
- *
- * <p>
- * This sounds more complicated than it is in practice. For example, the
- * following are equivalent ways of expressing the same thing:
- * <pre>
- * . a < b < c
- * . a < b & b < c
- * . a < c & a < b
- * </pre>
- * Notice that the order is important, as the subsequent item goes immediately
- * after the text-argument. The following are not equivalent:
- * <pre>
- * . a < b & a < c
- * . a < c & a < b
- * </pre>
- * Either the text-argument must already be present in the sequence, or some
- * initial substring of the text-argument must be present. (e.g. "a < b & ae <
- * e" is valid since "a" is present in the sequence before "ae" is reset). In
- * this latter case, "ae" is not entered and treated as a single character;
- * instead, "e" is sorted as if it were expanded to two characters: "a"
- * followed by an "e". This difference appears in natural languages: in
- * traditional Spanish "ch" is treated as though it contracts to a single
- * character (expressed as "c < ch < d"), while in traditional German "ä"
- * (a-umlaut) is treated as though it expands to two characters (expressed as
- * "a & ae ; ä < b").
- * <p><strong>Ignorable Characters</strong>
- * <p>For ignorable characters, the first rule must start with a relation (the
- * examples we have used above are really fragments; "a < b" really should be
- * "< a < b"). If, however, the first relation is not "<", then all the
- * text-arguments up to the first "<" are ignorable. For example, ", - < a < b"
- * makes "-" an ignorable character, as we saw earlier in the word
- * "black-birds". In the samples for different languages, you see that most
- * accents are ignorable.
- * <p><strong>Normalization and Accents</strong>
- * <p>The Collator object automatically normalizes text internally to separate
- * accents from base characters where possible. This is done both when
- * processing the rules, and when comparing two strings. Collator also uses
- * the Unicode canonical mapping to ensure that combining sequences are sorted
- * properly (for more information, see <A HREF="http://www.aw.com/devpress">
- * The Unicode Standard, Version 2.0</A>.)</P>
- * <p><strong>Errors</strong>
- * <p>The following are errors:
- * <UL Type=round>
- * <LI>A text-argument contains unquoted punctuation symbols
- * (e.g. "a < b-c < d").
- * <LI>A relation or reset character not followed by a text-argument
- * (e.g. "a < , b").
- * <LI>A reset where the text-argument (or an initial substring of the
- * text-argument) is not already in the sequence.
- * (e.g. "a < b & e < f")
- * </UL>
- * <pre>
- * . Examples:
- * . Simple: "< a < b < c < d"
- * . Norwegian: "< a,A< b,B< c,C< d,D< e,E< f,F< g,G< h,H< i,I< j,J
- * . < k,K< l,L< m,M< n,N< o,O< p,P< q,Q< r,R< s,S< t,T
- * . < u,U< v,V< w,W< x,X< y,Y< z,Z
- * . < å=a°,Å=A°
- * . ;aa,AA< æ,Æ< ø,Ø"
- * </pre>
- * <p>To create a table-based collation object, simply supply the collation
- * rules to the RuleBasedCollator contructor. For example:
- * <pre>
- * . UErrorCode status = U_ZERO_ERROR;
- * . RuleBasedCollator *mySimple = new RuleBasedCollator(Simple, status);
- * </pre>
- * <p>Another example:
- * <pre>
- * . UErrorCode status = U_ZERO_ERROR;
- * . RuleBasedCollator *myNorwegian = new RuleBasedCollator(Norwegian, status);
- * </pre>
- * To add rules on top of an existing table, simply supply the orginal rules
- * and modifications to RuleBasedCollator constructor. For example,
- * <pre>
- * . Traditional Spanish (fragment): ... & C < ch , cH , Ch , CH ...
- * . German (fragment) : ...< y , Y < z , Z
- * . & AE, Ä & AE, ä
- * . & OE , Ö & OE, ö
- * . & UE , Ü & UE, ü
- * . Symbols (fragment): ...< y, Y < z , Z
- * . & Question-mark ; '?'
- * . & Ampersand ; '&'
- * . & Dollar-sign ; '$'
- * <p>To create a collation object for traditional Spanish, the user can take
- * the English collation rules and add the additional rules to the table.
- * For example:
- * <pre>
- * . UErrorCode status = U_ZERO_ERROR;
- * . UnicodeString rules(DEFAULTRULES);
- * . rules += "& C < ch, cH, Ch, CH";
- * . RuleBasedCollator *mySpanish = new RuleBasedCollator(rules, status);
- * </pre>
- * <p>In order to sort symbols in the similiar order of sorting their
- * alphabetic equivalents, you can do the following,
- * <pre>
- * . UErrorCode status = U_ZERO_ERROR;
- * . UnicodeString rules(DEFAULTRULES);
- * . rules += "& Question-mark ; '?' & Ampersand ; '&' & Dollar-sign ; '$' ";
- * . RuleBasedCollator *myTable = new RuleBasedCollator(rules, status);
- * </pre>
- * <p>Another way of creating the table-based collation object, mySimple,
- * is:
- * <pre>
- * . UErrorCode status = U_ZERO_ERROR;
- * . RuleBasedCollator *mySimple = new
- * . RuleBasedCollator(" < a < b & b < c & c < d", status);
- * </pre>
- * Or,
- * <pre>
- * . UErrorCode status = U_ZERO_ERROR;
- * . RuleBasedCollator *mySimple = new
- * . RuleBasedCollator(" < a < b < d & b < c", status);
- * </pre>
- * Because " < a < b < c < d" is the same as "a < b < d & b < c" or
- * "< a < b & b < c & c < d".
- *
- * <p>To combine collations from two locales, (without error handling for clarity)
- * <pre>
- * . // Create an en_US Collator object
- * . Locale locale_en_US("en", "US", "");
- * . RuleBasedCollator* en_USCollator = (RuleBasedCollator*)
- * . Collator::createInstance( locale_en_US, success );
- * .
- * . // Create a da_DK Collator object
- * . Locale locale_da_DK("da", "DK", "");
- * . RuleBasedCollator* da_DKCollator = (RuleBasedCollator*)
- * . Collator::createInstance( locale_da_DK, success );
- * .
- * . // Combine the two
- * . // First, get the collation rules from en_USCollator
- * . UnicodeString rules = en_USCollator->getRules();
- * . // Second, get the collation rules from da_DKCollator
- * . rules += da_DKCollator->getRules();
- * . RuleBasedCollator* newCollator = new RuleBasedCollator( rules, success );
- * . // newCollator has the combined rules
- * </pre>
- * <p>Another more interesting example would be to make changes on an existing
- * table to create a new collation object. For example, add
- * "& C < ch, cH, Ch, CH" to the en_USCollation object to create your own
- * English collation object,
- * <pre>
- * . // Create a new Collator object with additional rules
- * . rules = en_USCollator->getRules();
- * . rules += "& C < ch, cH, Ch, CH";
- * . RuleBasedCollator* myCollator = new RuleBasedCollator( rules, success );
- * . // myCollator contains the new rules
- * </pre>
- *
- * <p>The following example demonstrates how to change the order of
- * non-spacing accents,
- * <pre>
- * . UChar contents[] = {
- * . '=', 0x0301, ';', 0x0300, ';', 0x0302,
- * . ';', 0x0308, ';', 0x0327, ',', 0x0303, // main accents
- * . ';', 0x0304, ';', 0x0305, ';', 0x0306, // main accents
- * . ';', 0x0307, ';', 0x0309, ';', 0x030A, // main accents
- * . ';', 0x030B, ';', 0x030C, ';', 0x030D, // main accents
- * . ';', 0x030E, ';', 0x030F, ';', 0x0310, // main accents
- * . ';', 0x0311, ';', 0x0312, // main accents
- * . '<', 'a', ',', 'A', ';', 'a', 'e', ',', 'A', 'E',
- * . ';', 0x00e6, ',', 0x00c6, '<', 'b', ',', 'B',
- * . '<', 'c', ',', 'C', '<', 'e', ',', 'E', '&',
- * . 'C', '<', 'd', ',', 'D', 0 };
- * . UnicodeString oldRules(contents);
- * . UErrorCode status = U_ZERO_ERROR;
- * . // change the order of accent characters
- * . UChar addOn[] = { '&', ',', 0x0300, ';', 0x0308, ';', 0x0302, 0 };
- * . oldRules += addOn;
- * . RuleBasedCollator *myCollation = new RuleBasedCollator(oldRules, status);
- * </pre>
- *
- * <p> The last example shows how to put new primary ordering in before the
- * default setting. For example, in Japanese collation, you can either sort
- * English characters before or after Japanese characters,
- * <pre>
- * . UErrorCode status = U_ZERO_ERROR;
- * . // get en_US collation rules
- * . RuleBasedCollator* en_USCollation =
- * . (RuleBasedCollator*) Collator::createInstance(Locale::US, status);
- * . // Always check the error code after each call.
- * . if (U_FAILURE(status)) return;
- * . // add a few Japanese character to sort before English characters
- * . // suppose the last character before the first base letter 'a' in
- * . // the English collation rule is 0x2212
- * . UChar jaString[] = { '&', 0x2212, '<', 0x3041, ',', 0x3042, '<', 0x3043, ',', 0x3044, 0 };
- * . UnicodeString rules( en_USCollation->getRules() );
- * . rules += jaString;
- * . RuleBasedCollator *myJapaneseCollation = new RuleBasedCollator(rules, status);
- * </pre>
- * <p><strong>NOTE</strong>: Typically, a collation object is created with
- * Collator::createInstance().
- * <p>
- * <strong>Note:</strong> <code>RuleBasedCollator</code>s with different Locale,
- * CollationStrength and Decomposition mode settings will return different
- * sort orders for the same set of strings. Locales have specific
- * collation rules, and the way in which secondary and tertiary differences
- * are taken into account, for example, will result in a different sorting order
- * for same strings.
- * <p>
- * @see Collator
- * @version 1.27 4/8/97
- * @author Helena Shih
- */
- class U_I18N_API RuleBasedCollator : public Collator
- {
- public :
-
- // constructor/destructor
- /**
- * RuleBasedCollator constructor. This takes the table rules and builds
- * a collation table out of them. Please see RuleBasedCollator class
- * description for more details on the collation rule syntax.
- * @see Locale
- * @param rules the collation rules to build the collation table from.
- */
- RuleBasedCollator( const UnicodeString& rules,
- UErrorCode& status);
-
- RuleBasedCollator( const UnicodeString& rules,
- ECollationStrength collationStrength,
- UErrorCode& status);
-
- RuleBasedCollator( const UnicodeString& rules,
- Normalizer::EMode decompositionMode,
- UErrorCode& status);
-
- RuleBasedCollator( const UnicodeString& rules,
- ECollationStrength collationStrength,
- Normalizer::EMode decompositionMode,
- UErrorCode& status);
-
- /** Destructor
- */
- virtual ~RuleBasedCollator();
-
-
- /** Copy constructor
- */
- RuleBasedCollator(const RuleBasedCollator& other);
-
- /**
- * Assignment operator.
- */
- RuleBasedCollator& operator=(const RuleBasedCollator& other);
-
- /**
- * Returns true if "other" is the same as "this".
- */
- virtual bool_t operator==(const Collator& other) const;
-
- /**
- * Returns true if "other" is not the same as "this".
- */
- virtual bool_t operator!=(const Collator& other) const;
-
- /**
- * Makes a deep copy of the object. The caller owns the returned object.
- * @return the cloned object.
- */
- virtual Collator* clone(void) const;
-
- /**
- * Creates a collation element iterator for the source string. The
- * caller of this method is responsible for the memory management of
- * the return pointer.
- * @param source the string over which the CollationElementIterator will iterate.
- * @return the collation element iterator of the source string using this as
- * the based collator.
- */
- virtual CollationElementIterator* createCollationElementIterator(const UnicodeString& source) const;
-
- /**
- * Creates a collation element iterator for the source. The
- * caller of this method is responsible for the memory management of
- * the returned pointer.
- * @param source the CharacterIterator which produces the characters over which the
- * CollationElementItgerator will iterate.
- * @return the collation element iterator of the source using this as
- * the based collator.
- */
- virtual CollationElementIterator* createCollationElementIterator(const CharacterIterator& source) const;
-
- /**
- * Compares a range of character data stored in two different strings
- * based on the collation rules. Returns
- * information about whether a string is less than, greater than or
- * equal to another string in a language.
- * This can be overriden in a subclass.
- * @param source the source string.
- * @param target the target string to be compared with the source stirng.
- * @return the comparison result. GREATER if the source string is greater
- * than the target string, LESS if the source is less than the target. Otherwise,
- * returns EQUAL.
- */
- virtual EComparisonResult compare( const UnicodeString& source,
- const UnicodeString& target) const;
-
-
- /**
- * Compares a range of character data stored in two different strings
- * based on the collation rules up to the specified length. Returns
- * information about whether a string is less than, greater than or
- * equal to another string in a language.
- * This can be overriden in a subclass.
- * @param source the source string.
- * @param target the target string to be compared with the source string.
- * @param length compares up to the specified length
- * @return the comparison result. GREATER if the source string is greater
- * than the target string, LESS if the source is less than the target. Otherwise,
- * returns EQUAL.
- */
- virtual EComparisonResult compare( const UnicodeString& source,
- const UnicodeString& target,
- int32_t length) const;
-
- /** Transforms a specified region of the string into a series of characters
- * that can be compared with CollationKey.compare. Use a CollationKey when
- * you need to do repeated comparisions on the same string. For a single comparison
- * the compare method will be faster.
- * @param source the source string.
- * @param key the transformed key of the source string.
- * @param status the error code status.
- * @return the transformed key.
- * @see CollationKey
- */
- virtual CollationKey& getCollationKey( const UnicodeString& source,
- CollationKey& key,
- UErrorCode& status) const;
- /**
- * Generates the hash code for the rule-based collation object.
- * @return the hash code.
- */
- virtual int32_t hashCode(void) const;
-
- /**
- * Gets the table-based rules for the collation object.
- * @return returns the collation rules that the table collation object
- * was created from.
- */
- const UnicodeString& getRules(void) const;
-
- /**
- * Return the maximum length of any expansion sequences that end
- * with the specified comparison order.
- *
- * @param order a collation order returned by previous or next.
- * @return the maximum length of any expansion seuences ending
- * with the specified order.
- *
- * @see CollationElementIterator#getMaxExpansion
- */
- int32_t getMaxExpansion(int32_t order) const;
-
- /**
- * Returns a unique class ID POLYMORPHICALLY. Pure virtual override.
- * This method is to implement a simple version of RTTI, since not all
- * C++ compilers support genuine RTTI. Polymorphic operator==() and
- * clone() methods call this method.
- *
- * @return The class ID for this object. All objects of a
- * given class have the same class ID. Objects of
- * other classes have different class IDs.
- */
- virtual UClassID getDynamicClassID(void) const
- { return RuleBasedCollator::getStaticClassID(); }
-
-
- /**
- * Returns the class ID for this class. This is useful only for
- * comparing to a return value from getDynamicClassID(). For example:
- *
- * Base* polymorphic_pointer = createPolymorphicObject();
- * if (polymorphic_pointer->getDynamicClassID() ==
- * Derived::getStaticClassID()) ...
- *
- * @return The class ID for all objects of this class.
- */
- static UClassID getStaticClassID(void) { return (UClassID)&fgClassID; }
-
- /*****************************************************************************
- * PRIVATE
- *****************************************************************************/
- private:
- static char fgClassID;
-
- // Streamer used to read/write binary collation data files.
- friend class RuleBasedCollatorStreamer;
-
- // Used to iterate over collation elements in a character source.
- friend class CollationElementIterator;
-
- // Collator ONLY needs access to RuleBasedCollator(const Locale&, UErrorCode&)
- friend class Collator;
-
- // TableCollationData ONLY needs access to UNMAPPED
- friend class TableCollationData;
-
-
- /** Default constructor
- */
- RuleBasedCollator();
-
- /**
- * Create a new entry in the expansion table that contains the orderings
- * for the given characers. If anOrder is valid, it is added to the
- * beginning of the expanded list of orders.
- */
- int32_t addExpansion(int32_t anOrder,
- const UnicodeString &expandChars);
- /**
- * Create a table-based collation object with the given rules.
- * @see RuleBasedCollator#RuleBasedCollator
- * @exception FormatException If the rules format is incorrect.
- */
- void build( const UnicodeString& rules,
- UErrorCode& success);
-
- /** Add expanding entries for pre-composed unicode characters so that this
- * collator can be used reasonably well with decomposition turned off.
- */
- void addComposedChars(void);
-
- /**
- * Look up for unmapped values in the expanded character table.
- */
- void commit(void);
- /**
- * Increment of the last order based on the collation strength.
- * @param s the collation strength.
- * @param lastOrder the last collation order.
- * @return the new collation order.
- */
- int32_t increment( Collator::ECollationStrength s,
- int32_t lastOrder);
- /**
- * Adds a character and its designated order into the collation table.
- * @param ch the Unicode character,
- * @param anOrder the order.
- * @param status the error code status.
- */
- void addOrder( UChar ch,
- int32_t anOrder,
- UErrorCode& status);
- /**
- * Adds the expanding string into the collation table, for example, a-umlaut in German.
- * @param groupChars the contracting characters.
- * @param expChars the expanding characters.
- * @param anOrder the order.
- * @param status the error code status.
- */
- void addExpandOrder(const UnicodeString& groupChars,
- const UnicodeString& expChars,
- int32_t anOrder,
- UErrorCode& status);
- /**
- * Adds the contracting string into the collation table, for example, ch in Spanish.
- * @param groupChars the contracting characters.
- * @param anOrder the order.
- * @param status the error code status.
- */
- void addContractOrder(const UnicodeString& groupChars,
- int32_t anOrder,
- UErrorCode& status);
- /**
- * Adds the contracting string into the collation table, for example, ch in Spanish.
- * @param groupChars the contracting characters.
- * @param anOrder the order.
- * @param fwd TRUE if this is for the forward direction
- * @param status the error code status.
- */
- void addContractOrder(const UnicodeString& groupChars,
- int32_t anOrder,
- bool_t fwd,
- UErrorCode& status);
- /**
- * If the given string has been specified as a contracting string
- * in this collation table, return its ordering, otherwise return UNMAPPED.
- * @param groupChars the string
- * @return the order of the contracted character, or UNMAPPED if
- * there isn't one.
- */
- int32_t getContractOrder(const UnicodeString &groupChars) const;
- /**
- * Gets the entry of list of the contracting string in the collation
- * table.
- * @param ch the starting character of the contracting string
- * @return the entry of contracting element which starts with the specified
- * character in the list of contracting elements.
- */
- VectorOfPToContractElement*
- getContractValues(UChar ch) const;
- /**
- * Ges the entry of list of the contracting string in the collation
- * table.
- * @param index the index of the contract character list
- * @return the entry of the contracting element of the specified index in the
- * list.
- */
- VectorOfPToContractElement*
- getContractValues(int32_t index) const;
- /**
- * Gets the entry of value list of the expanding string in the collation
- * table at the specified index.
- * @param order the order of the expanding string value list
- * @return the entry of the expanding-char element of the specified index in
- * the list.
- */
- VectorOfInt* getExpandValueList(int32_t order) const;
- /**
- * Gets the comarison order of a character from the collation table.
- * @param ch the Unicode character
- * @return the comparison order of a character.
- */
- int32_t getUnicodeOrder(UChar ch) const;
-
- /**
- * Gets the comarison order of a character from the collation table.
- * @param ch the Unicode character
- * @return the comparison order of a character.
- */
- int32_t getCharOrder(UChar ch) const;
-
- /**
- * Gets the comarison order of a character from the collation table.
- * @param list the contracting element table.
- * @param name the contracting char string.
- * @return the comparison order of the contracting character.
- */
- static int32_t getEntry( VectorOfPToContractElement* list,
- const UnicodeString& name,
- bool_t fwd);
-
- /**
- * Flattens the given object persistently to a file. The file name
- * argument should be a path name that can be passed directly to the
- * underlying OS. Once a RuleBasedCollator has been written to a file,
- * it can be resurrected by calling the RuleBasedCollator(const char*)
- * constructor, which operates very quickly.
- * @param fileName the output file name.
- * @return TRUE if writing to the file was successful, FALSE otherwise.
- */
- bool_t writeToFile(const char* fileName) const; // True on success
-
- /**
- * Add this table collation to the cache. This involves adding the
- * enclosed TableCollationData to the cache, and then marking our
- * pointer as "not owned" by setting dataIsOwned to false.
- * @param key the unique that represents this collation data object.
- */
- void addToCache( const UnicodeString& key);
-
- /**
- * RuleBasedCollator constructor. This constructor takes a locale. The only
- * caller of this class should be Collator::createInstance(). If createInstance()
- * happens to know that the requested locale's collation is implemented as
- * a RuleBasedCollator, it can then call this constructor. OTHERWISE IT SHOULDN'T,
- * since this constructor ALWAYS RETURNS A VALID COLLATION TABLE. It does this
- * by falling back to defaults.
- */
- RuleBasedCollator( const Locale& desiredLocale,
- UErrorCode& status);
- /**
- * Internal constructFromXyx() methods. These methods do object construction
- * from various sources. They act like assignment operators; whatever used
- * to be in this object is discarded. <P>FROM RULES. This constructor turns
- * around and calls build(). <P>FROM CACHE. This constructor tries to get the
- * requested cached TableCollationData object, and wrap us around it. <P>FROM FILE.
- * There are two constructors named constructFromFile(). One takes a const char*:
- * this is a path name to be passed directly to the host OS, where a flattened
- * table collation (produced by writeToFile()) resides. The other method takes
- * a Locale, and a UnicodeString locale file name. The distinction is this:
- * the Locale is the locale we are seeking. The file name is the name of the
- * data file (either binary, as produced by writeToFile(), or ASCII, as read
- * by ResourceBundle). Within the file, if it is found, the method will look
- * for the given Locale.
- */
- void constructFromRules( const UnicodeString& rules,
- UErrorCode& status);
- void constructFromFile( const Locale& locale,
- const UnicodeString& localeFileName,
- bool_t tryBinaryFile,
- UErrorCode& status);
- void constructFromFile( const char* fileName,
- UErrorCode& status);
- void constructFromCache( const UnicodeString& key,
- UErrorCode& status);
-
- //--------------------------------------------------------------------------
- // Internal Static Utility Methods
- /**
- * Creates the path name with given information.
- * @param prefix the prefix of the file name.
- * @param name the actual file name.
- * @param suffix the suffix of the file name.
- * @return the generated file name.
- */
- static char* createPathName( const UnicodeString& prefix,
- const UnicodeString& name,
- const UnicodeString& suffix);
-
- /**
- * Chops off the last portion of the locale name. For example, from "en_US_CA"
- * to "en_US" and "en_US" to "en".
- * @param localeName the locale name.
- */
- static void chopLocale(UnicodeString& localeName);
-
- //--------------------------------------------------------------------------
- // Constants
-
- static const int32_t UNMAPPED;
- static const int32_t CHARINDEX; // need look up in .commit()
- static const int32_t EXPANDCHARINDEX; // Expand index follows
- static const int32_t CONTRACTCHARINDEX; // contract indexes follow
-
- static const int32_t PRIMARYORDERINCREMENT;
- static const int32_t MAXIGNORABLE;
- static const int32_t SECONDARYORDERINCREMENT;
- static const int32_t TERTIARYORDERINCREMENT;
- static const int32_t PRIMARYORDERMASK;
- static const int32_t SECONDARYORDERMASK;
- static const int32_t TERTIARYORDERMASK;
- static const int32_t SECONDARYRESETMASK;
- static const int32_t IGNORABLEMASK;
- static const int32_t PRIMARYDIFFERENCEONLY;
- static const int32_t SECONDARYDIFFERENCEONLY;
- static const int32_t PRIMARYORDERSHIFT;
- static const int32_t SECONDARYORDERSHIFT;
- static const int32_t SORTKEYOFFSET;
- static const int32_t CONTRACTCHAROVERFLOW;
-
- static const int16_t FILEID;
-
- static UnicodeString DEFAULTRULES;
-
- static const char* kFilenameSuffix;
-
- //--------------------------------------------------------------------------
- // Data Members
-
- bool_t isOverIgnore;
- UChar lastChar;
- MergeCollation* mPattern;
- UnicodeString sbuffer;
- UnicodeString tbuffer;
- UnicodeString key;
- CollationElementIterator *sourceCursor;
- CollationElementIterator *targetCursor;
- bool_t dataIsOwned;
- TableCollationData* data;
- };
-
-
- inline bool_t
- RuleBasedCollator::operator!=(const Collator& other) const
- {
- return !(*this == other);
- }
-
- inline void
- RuleBasedCollator::addContractOrder(const UnicodeString &groupChars,
- int32_t anOrder,
- UErrorCode &status)
- {
- addContractOrder(groupChars, anOrder, TRUE, status);
- }
-
- #endif
-