106 lines
2.6 KiB
C++
106 lines
2.6 KiB
C++
/*
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* Copyright 2003-2011, Haiku, Inc.
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* Distributed under the terms of the MIT Licence.
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*/
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#ifndef _COLLATOR_H_
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#define _COLLATOR_H_
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#include <Archivable.h>
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#include <SupportDefs.h>
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namespace icu {
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class Collator;
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class RuleBasedCollator;
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};
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class BString;
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class BCollatorAddOn;
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enum collator_strengths {
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B_COLLATE_DEFAULT = -1,
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B_COLLATE_PRIMARY = 1, // e.g.: no diacritical differences, e = é
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B_COLLATE_SECONDARY, // diacritics are different from their base
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// characters, a != ä
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B_COLLATE_TERTIARY, // case sensitive comparison
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B_COLLATE_QUATERNARY,
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B_COLLATE_IDENTICAL = 127 // Unicode value
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};
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// N.B.: This class is not multithread-safe, as Compare() and GetKey() change
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// the ICUCollator (the strength). So if you want to use a BCollator from
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// more than one thread, you need to protect it with a lock
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class BCollator : public BArchivable {
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public:
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BCollator();
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BCollator(const char* locale,
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int8 strength = B_COLLATE_PRIMARY,
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bool ignorePunctuation = false);
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BCollator(BMessage* archive);
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BCollator(const BCollator& other);
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~BCollator();
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BCollator& operator=(const BCollator& source);
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void SetDefaultStrength(int8 strength);
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int8 DefaultStrength() const;
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void SetIgnorePunctuation(bool ignore);
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bool IgnorePunctuation() const;
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status_t GetSortKey(const char* string, BString* key,
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int8 strength = B_COLLATE_DEFAULT) const;
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int Compare(const char* s1, const char* s2,
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int8 strength = B_COLLATE_DEFAULT) const;
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bool Equal(const char* s1, const char* s2,
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int8 strength = B_COLLATE_DEFAULT) const;
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bool Greater(const char* s1, const char* s2,
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int8 strength = B_COLLATE_DEFAULT) const;
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bool GreaterOrEqual(const char* s1, const char* s2,
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int8 strength = B_COLLATE_DEFAULT) const;
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// (un-)archiving API
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status_t Archive(BMessage* archive, bool deep) const;
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static BArchivable* Instantiate(BMessage* archive);
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private:
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status_t _SetStrength(int8 strength) const;
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mutable icu::Collator* fICUCollator;
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int8 fDefaultStrength;
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bool fIgnorePunctuation;
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};
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inline bool
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BCollator::Equal(const char *s1, const char *s2, int8 strength) const
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{
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return Compare(s1, s2, strength) == 0;
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}
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inline bool
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BCollator::Greater(const char *s1, const char *s2, int8 strength) const
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{
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return Compare(s1, s2, strength) > 0;
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}
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inline bool
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BCollator::GreaterOrEqual(const char *s1, const char *s2, int8 strength) const
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{
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return Compare(s1, s2, strength) >= 0;
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}
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#endif /* _COLLATOR_H_ */
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