| Index: public/i18n/unicode/sortkey.h
|
| ===================================================================
|
| --- public/i18n/unicode/sortkey.h (revision 211843)
|
| +++ public/i18n/unicode/sortkey.h (working copy)
|
| @@ -1,324 +0,0 @@
|
| -/*
|
| - *****************************************************************************
|
| - * Copyright (C) 1996-2006, International Business Machines Corporation and others.
|
| - * All Rights Reserved.
|
| - *****************************************************************************
|
| - *
|
| - * File sortkey.h
|
| - *
|
| - * Created by: Helena Shih
|
| - *
|
| - * Modification History:
|
| - *
|
| - * Date Name Description
|
| - *
|
| - * 6/20/97 helena Java class name change.
|
| - * 8/18/97 helena Added internal API documentation.
|
| - * 6/26/98 erm Changed to use byte arrays and memcmp.
|
| - *****************************************************************************
|
| - */
|
| -
|
| -#ifndef SORTKEY_H
|
| -#define SORTKEY_H
|
| -
|
| -#include "unicode/utypes.h"
|
| -
|
| -/**
|
| - * \file
|
| - * \brief C++ API: Keys for comparing strings multiple times.
|
| - */
|
| -
|
| -#if !UCONFIG_NO_COLLATION
|
| -
|
| -#include "unicode/uobject.h"
|
| -#include "unicode/unistr.h"
|
| -#include "unicode/coll.h"
|
| -
|
| -U_NAMESPACE_BEGIN
|
| -
|
| -/* forward declaration */
|
| -class RuleBasedCollator;
|
| -
|
| -/**
|
| - *
|
| - * Collation keys are generated by the Collator class. Use the CollationKey objects
|
| - * instead of Collator to compare strings multiple times. A CollationKey
|
| - * preprocesses the comparison information from the Collator object to
|
| - * make the comparison faster. If you are not going to comparing strings
|
| - * multiple times, then using the Collator object is generally faster,
|
| - * since it only processes as much of the string as needed to make a
|
| - * comparison.
|
| - * <p> For example (with strength == tertiary)
|
| - * <p>When comparing "Abernathy" to "Baggins-Smythworthy", Collator
|
| - * only needs to process a couple of characters, while a comparison
|
| - * with CollationKeys will process all of the characters. On the other hand,
|
| - * if you are doing a sort of a number of fields, it is much faster to use
|
| - * CollationKeys, since you will be comparing strings multiple times.
|
| - * <p>Typical use of CollationKeys are in databases, where you store a CollationKey
|
| - * in a hidden field, and use it for sorting or indexing.
|
| - *
|
| - * <p>Example of use:
|
| - * <pre>
|
| - * \code
|
| - * UErrorCode success = U_ZERO_ERROR;
|
| - * Collator* myCollator = Collator::createInstance(success);
|
| - * CollationKey* keys = new CollationKey [3];
|
| - * myCollator->getCollationKey("Tom", keys[0], success );
|
| - * myCollator->getCollationKey("Dick", keys[1], success );
|
| - * myCollator->getCollationKey("Harry", keys[2], success );
|
| - *
|
| - * // Inside body of sort routine, compare keys this way:
|
| - * CollationKey tmp;
|
| - * if(keys[0].compareTo( keys[1] ) > 0 ) {
|
| - * tmp = keys[0]; keys[0] = keys[1]; keys[1] = tmp;
|
| - * }
|
| - * //...
|
| - * \endcode
|
| - * </pre>
|
| - * <p>Because Collator::compare()'s algorithm is complex, it is faster to sort
|
| - * long lists of words by retrieving collation keys with Collator::getCollationKey().
|
| - * You can then cache the collation keys and compare them using CollationKey::compareTo().
|
| - * <p>
|
| - * <strong>Note:</strong> <code>Collator</code>s with different Locale,
|
| - * CollationStrength and DecompositionMode settings will return different
|
| - * CollationKeys 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 different CollationKeys
|
| - * for same strings.
|
| - * <p>
|
| -
|
| - * @see Collator
|
| - * @see RuleBasedCollator
|
| - * @version 1.3 12/18/96
|
| - * @author Helena Shih
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| -class U_I18N_API CollationKey : public UObject {
|
| -public:
|
| - /**
|
| - * This creates an empty collation key based on the null string. An empty
|
| - * collation key contains no sorting information. When comparing two empty
|
| - * collation keys, the result is Collator::EQUAL. Comparing empty collation key
|
| - * with non-empty collation key is always Collator::LESS.
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - CollationKey();
|
| -
|
| -
|
| - /**
|
| - * Creates a collation key based on the collation key values.
|
| - * @param values the collation key values
|
| - * @param count number of collation key values, including trailing nulls.
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - CollationKey(const uint8_t* values,
|
| - int32_t count);
|
| -
|
| - /**
|
| - * Copy constructor.
|
| - * @param other the object to be copied.
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - CollationKey(const CollationKey& other);
|
| -
|
| - /**
|
| - * Sort key destructor.
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - virtual ~CollationKey();
|
| -
|
| - /**
|
| - * Assignment operator
|
| - * @param other the object to be copied.
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - const CollationKey& operator=(const CollationKey& other);
|
| -
|
| - /**
|
| - * Compare if two collation keys are the same.
|
| - * @param source the collation key to compare to.
|
| - * @return Returns true if two collation keys are equal, false otherwise.
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - UBool operator==(const CollationKey& source) const;
|
| -
|
| - /**
|
| - * Compare if two collation keys are not the same.
|
| - * @param source the collation key to compare to.
|
| - * @return Returns TRUE if two collation keys are different, FALSE otherwise.
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - UBool operator!=(const CollationKey& source) const;
|
| -
|
| -
|
| - /**
|
| - * Test to see if the key is in an invalid state. The key will be in an
|
| - * invalid state if it couldn't allocate memory for some operation.
|
| - * @return Returns TRUE if the key is in an invalid, FALSE otherwise.
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - UBool isBogus(void) const;
|
| -
|
| - /**
|
| - * Returns a pointer to the collation key values. The storage is owned
|
| - * by the collation key and the pointer will become invalid if the key
|
| - * is deleted.
|
| - * @param count the output parameter of number of collation key values,
|
| - * including any trailing nulls.
|
| - * @return a pointer to the collation key values.
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - const uint8_t* getByteArray(int32_t& count) const;
|
| -
|
| -#ifdef U_USE_COLLATION_KEY_DEPRECATES
|
| - /**
|
| - * Extracts the collation key values into a new array. The caller owns
|
| - * this storage and should free it.
|
| - * @param count the output parameter of number of collation key values,
|
| - * including any trailing nulls.
|
| - * @obsolete ICU 2.6. Use getByteArray instead since this API will be removed in that release.
|
| - */
|
| - uint8_t* toByteArray(int32_t& count) const;
|
| -#endif
|
| -
|
| - /**
|
| - * Convenience method which does a string(bit-wise) comparison of the
|
| - * two collation keys.
|
| - * @param target target collation key to be compared with
|
| - * @return Returns Collator::LESS if sourceKey < targetKey,
|
| - * Collator::GREATER if sourceKey > targetKey and Collator::EQUAL
|
| - * otherwise.
|
| - * @deprecated ICU 2.6 use the overload with error code
|
| - */
|
| - Collator::EComparisonResult compareTo(const CollationKey& target) const;
|
| -
|
| - /**
|
| - * Convenience method which does a string(bit-wise) comparison of the
|
| - * two collation keys.
|
| - * @param target target collation key to be compared with
|
| - * @param status error code
|
| - * @return Returns UCOL_LESS if sourceKey < targetKey,
|
| - * UCOL_GREATER if sourceKey > targetKey and UCOL_EQUAL
|
| - * otherwise.
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - UCollationResult compareTo(const CollationKey& target, UErrorCode &status) const;
|
| -
|
| - /**
|
| - * Creates an integer that is unique to the collation key. NOTE: this
|
| - * is not the same as String.hashCode.
|
| - * <p>Example of use:
|
| - * <pre>
|
| - * . UErrorCode status = U_ZERO_ERROR;
|
| - * . Collator *myCollation = Collator::createInstance(Locale::US, status);
|
| - * . if (U_FAILURE(status)) return;
|
| - * . CollationKey key1, key2;
|
| - * . UErrorCode status1 = U_ZERO_ERROR, status2 = U_ZERO_ERROR;
|
| - * . myCollation->getCollationKey("abc", key1, status1);
|
| - * . if (U_FAILURE(status1)) { delete myCollation; return; }
|
| - * . myCollation->getCollationKey("ABC", key2, status2);
|
| - * . if (U_FAILURE(status2)) { delete myCollation; return; }
|
| - * . // key1.hashCode() != key2.hashCode()
|
| - * </pre>
|
| - * @return the hash value based on the string's collation order.
|
| - * @see UnicodeString#hashCode
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - int32_t hashCode(void) const;
|
| -
|
| - /**
|
| - * ICU "poor man's RTTI", returns a UClassID for the actual class.
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - virtual UClassID getDynamicClassID() const;
|
| -
|
| - /**
|
| - * ICU "poor man's RTTI", returns a UClassID for this class.
|
| - * @deprecated ICU 2.8 Use Collator::getSortKey(...) instead
|
| - */
|
| - static UClassID U_EXPORT2 getStaticClassID();
|
| -
|
| -private:
|
| - /**
|
| - * Returns an array of the collation key values as 16-bit integers.
|
| - * The caller owns the storage and must delete it.
|
| - * @param values Output param of the collation key values.
|
| - * @param count output parameter of the number of collation key values
|
| - * @return a pointer to an array of 16-bit collation key values.
|
| - */
|
| - void adopt(uint8_t *values, int32_t count);
|
| -
|
| - /*
|
| - * Creates a collation key with a string.
|
| - */
|
| -
|
| - /**
|
| - * If this CollationKey has capacity less than newSize,
|
| - * its internal capacity will be increased to newSize.
|
| - * @param newSize minimum size this CollationKey has to have
|
| - * @return this CollationKey
|
| - */
|
| - CollationKey& ensureCapacity(int32_t newSize);
|
| - /**
|
| - * Set the CollationKey to a "bogus" or invalid state
|
| - * @return this CollationKey
|
| - */
|
| - CollationKey& setToBogus(void);
|
| - /**
|
| - * Resets this CollationKey to an empty state
|
| - * @return this CollationKey
|
| - */
|
| - CollationKey& reset(void);
|
| -
|
| - /**
|
| - * Allow private access to RuleBasedCollator
|
| - */
|
| - friend class RuleBasedCollator;
|
| - /**
|
| - * Bogus status
|
| - */
|
| - UBool fBogus;
|
| - /**
|
| - * Size of fBytes used to store the sortkey. i.e. up till the
|
| - * null-termination.
|
| - */
|
| - int32_t fCount;
|
| - /**
|
| - * Full size of the fBytes
|
| - */
|
| - int32_t fCapacity;
|
| - /**
|
| - * Unique hash value of this CollationKey
|
| - */
|
| - int32_t fHashCode;
|
| - /**
|
| - * Array to store the sortkey
|
| - */
|
| - uint8_t* fBytes;
|
| -
|
| -};
|
| -
|
| -inline UBool
|
| -CollationKey::operator!=(const CollationKey& other) const
|
| -{
|
| - return !(*this == other);
|
| -}
|
| -
|
| -inline UBool
|
| -CollationKey::isBogus() const
|
| -{
|
| - return fBogus;
|
| -}
|
| -
|
| -inline const uint8_t*
|
| -CollationKey::getByteArray(int32_t &count) const
|
| -{
|
| - count = fCount;
|
| - return fBytes;
|
| -}
|
| -
|
| -U_NAMESPACE_END
|
| -
|
| -#endif /* #if !UCONFIG_NO_COLLATION */
|
| -
|
| -#endif
|
|
|