sl@0: /*
sl@0: ******************************************************************************
sl@0: *   Copyright (C) 1997-2004, International Business Machines
sl@0: *   Corporation and others.  All Rights Reserved.
sl@0: ******************************************************************************
sl@0: *   Date        Name        Description
sl@0: *   03/28/00    aliu        Creation.
sl@0: ******************************************************************************
sl@0: */
sl@0: 
sl@0: #ifndef HASH_H
sl@0: #define HASH_H
sl@0: 
sl@0: #include "unicode/unistr.h"
sl@0: #include "unicode/uobject.h"
sl@0: #include "uhash.h"
sl@0: 
sl@0: U_NAMESPACE_BEGIN
sl@0: 
sl@0: /**
sl@0:  * Hashtable is a thin C++ wrapper around UHashtable, a general-purpose void*
sl@0:  * hashtable implemented in C.  Hashtable is designed to be idiomatic and
sl@0:  * easy-to-use in C++.
sl@0:  *
sl@0:  * Hashtable is an INTERNAL CLASS.
sl@0:  */
sl@0: class U_COMMON_API Hashtable : public UMemory {
sl@0:     UHashtable* hash;
sl@0: 
sl@0:     inline void init(UHashFunction *keyHash, UKeyComparator *keyComp, UErrorCode& status);
sl@0: 
sl@0: public:
sl@0:     /**
sl@0:      * Construct a hashtable
sl@0:      * @param ignoreKeyCase If true, keys are case insensitive.
sl@0:      * @param status Error code
sl@0:     */
sl@0:     Hashtable(UBool ignoreKeyCase, UErrorCode& status);
sl@0: 
sl@0:     /**
sl@0:      * Construct a hashtable
sl@0:      * @param status Error code
sl@0:     */
sl@0:     Hashtable(UErrorCode& status);
sl@0: 
sl@0:     /**
sl@0:      * Construct a hashtable, _disregarding any error_.  Use this constructor
sl@0:      * with caution.
sl@0:      */
sl@0:     Hashtable();
sl@0: 
sl@0:     /**
sl@0:      * Non-virtual destructor; make this virtual if Hashtable is subclassed
sl@0:      * in the future.
sl@0:      */
sl@0:     ~Hashtable();
sl@0: 
sl@0:     UObjectDeleter *setValueDeleter(UObjectDeleter *fn);
sl@0: 
sl@0:     int32_t count() const;
sl@0: 
sl@0:     void* put(const UnicodeString& key, void* value, UErrorCode& status);
sl@0: 
sl@0:     int32_t puti(const UnicodeString& key, int32_t value, UErrorCode& status);
sl@0: 
sl@0:     void* get(const UnicodeString& key) const;
sl@0:     
sl@0:     int32_t geti(const UnicodeString& key) const;
sl@0:     
sl@0:     void* remove(const UnicodeString& key);
sl@0: 
sl@0:     int32_t removei(const UnicodeString& key);
sl@0: 
sl@0:     void removeAll(void);
sl@0: 
sl@0:     const UHashElement* find(const UnicodeString& key) const;
sl@0: 
sl@0:     const UHashElement* nextElement(int32_t& pos) const;
sl@0: 
sl@0: private:
sl@0:     Hashtable(const Hashtable &other); // forbid copying of this class
sl@0:     Hashtable &operator=(const Hashtable &other); // forbid copying of this class
sl@0: };
sl@0: 
sl@0: /*********************************************************************
sl@0:  * Implementation
sl@0:  ********************************************************************/
sl@0: 
sl@0: inline void Hashtable::init(UHashFunction *keyHash, UKeyComparator *keyComp, UErrorCode& status) {
sl@0:     if (U_FAILURE(status)) {
sl@0:         return;
sl@0:     }
sl@0:     hash = uhash_open(keyHash, keyComp, &status);
sl@0:     if (U_SUCCESS(status)) {
sl@0:         uhash_setKeyDeleter(hash, uhash_deleteUnicodeString);
sl@0:     }
sl@0: }
sl@0: 
sl@0: inline Hashtable::Hashtable(UBool ignoreKeyCase, UErrorCode& status)
sl@0:  : hash(0)
sl@0: {
sl@0:     init(ignoreKeyCase ? uhash_hashCaselessUnicodeString
sl@0:                         : uhash_hashUnicodeString,
sl@0:             ignoreKeyCase ? uhash_compareCaselessUnicodeString
sl@0:                         : uhash_compareUnicodeString,
sl@0:             status);
sl@0: }
sl@0: 
sl@0: inline Hashtable::Hashtable(UErrorCode& status)
sl@0:  : hash(0)
sl@0: {
sl@0:     init(uhash_hashUnicodeString, uhash_compareUnicodeString, status);
sl@0: }
sl@0: 
sl@0: inline Hashtable::Hashtable()
sl@0:  : hash(0)
sl@0: {
sl@0:     UErrorCode status = U_ZERO_ERROR;
sl@0:     init(uhash_hashUnicodeString, uhash_compareUnicodeString, status);
sl@0: }
sl@0: 
sl@0: inline Hashtable::~Hashtable() {
sl@0:     if (hash != 0) {
sl@0:         uhash_close(hash);
sl@0:         hash = 0;
sl@0:     }
sl@0: }
sl@0: 
sl@0: inline UObjectDeleter *Hashtable::setValueDeleter(UObjectDeleter *fn) {
sl@0:     return uhash_setValueDeleter(hash, fn);
sl@0: }
sl@0: 
sl@0: inline int32_t Hashtable::count() const {
sl@0:     return uhash_count(hash);
sl@0: }
sl@0: 
sl@0: inline void* Hashtable::put(const UnicodeString& key, void* value, UErrorCode& status) {
sl@0:     return uhash_put(hash, new UnicodeString(key), value, &status);
sl@0: }
sl@0: 
sl@0: inline int32_t Hashtable::puti(const UnicodeString& key, int32_t value, UErrorCode& status) {
sl@0:     return uhash_puti(hash, new UnicodeString(key), value, &status);
sl@0: }
sl@0: 
sl@0: inline void* Hashtable::get(const UnicodeString& key) const {
sl@0:     return uhash_get(hash, &key);
sl@0: }
sl@0: 
sl@0: inline int32_t Hashtable::geti(const UnicodeString& key) const {
sl@0:     return uhash_geti(hash, &key);
sl@0: }
sl@0: 
sl@0: inline void* Hashtable::remove(const UnicodeString& key) {
sl@0:     return uhash_remove(hash, &key);
sl@0: }
sl@0: 
sl@0: inline int32_t Hashtable::removei(const UnicodeString& key) {
sl@0:     return uhash_removei(hash, &key);
sl@0: }
sl@0: 
sl@0: inline const UHashElement* Hashtable::find(const UnicodeString& key) const {
sl@0:     return uhash_find(hash, &key);
sl@0: }
sl@0: 
sl@0: inline const UHashElement* Hashtable::nextElement(int32_t& pos) const {
sl@0:     return uhash_nextElement(hash, &pos);
sl@0: }
sl@0: 
sl@0: inline void Hashtable::removeAll(void) {
sl@0:   uhash_removeAll(hash);
sl@0: }
sl@0: 
sl@0: U_NAMESPACE_END
sl@0: 
sl@0: #endif