normlzr.h

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/*
 ********************************************************************
 * COPYRIGHT:
 * Copyright (c) 1996-2011, International Business Machines Corporation and
 * others. All Rights Reserved.
 ********************************************************************
 */
 
#ifndef NORMLZR_H
#define NORMLZR_H
 
#include "unicode/utypes.h"
 
#if !UCONFIG_NO_NORMALIZATION
 
#include "unicode/chariter.h"
#include "unicode/normalizer2.h"
#include "unicode/unistr.h"
#include "unicode/unorm.h"
#include "unicode/uobject.h"
 
U_NAMESPACE_BEGIN
class U_COMMON_API Normalizer : public UObject {
public:
  enum {
      DONE=0xffff
  };
 
  // Constructors
 
  Normalizer(const UnicodeString& str, UNormalizationMode mode);
 
  Normalizer(const UChar* str, int32_t length, UNormalizationMode mode);
 
  Normalizer(const CharacterIterator& iter, UNormalizationMode mode);
 
  Normalizer(const Normalizer& copy);
 
  virtual ~Normalizer();
 
 
  //-------------------------------------------------------------------------
  // Static utility methods
  //-------------------------------------------------------------------------
 
  static void U_EXPORT2 normalize(const UnicodeString& source,
                        UNormalizationMode mode, int32_t options,
                        UnicodeString& result,
                        UErrorCode &status);
 
  static void U_EXPORT2 compose(const UnicodeString& source,
                      UBool compat, int32_t options,
                      UnicodeString& result,
                      UErrorCode &status);
 
  static void U_EXPORT2 decompose(const UnicodeString& source,
                        UBool compat, int32_t options,
                        UnicodeString& result,
                        UErrorCode &status);
 
  static inline UNormalizationCheckResult
  quickCheck(const UnicodeString &source, UNormalizationMode mode, UErrorCode &status);
 
  static UNormalizationCheckResult
  quickCheck(const UnicodeString &source, UNormalizationMode mode, int32_t options, UErrorCode &status);
 
  static inline UBool
  isNormalized(const UnicodeString &src, UNormalizationMode mode, UErrorCode &errorCode);
 
  static UBool
  isNormalized(const UnicodeString &src, UNormalizationMode mode, int32_t options, UErrorCode &errorCode);
 
  static UnicodeString &
  U_EXPORT2 concatenate(const UnicodeString &left, const UnicodeString &right,
              UnicodeString &result,
              UNormalizationMode mode, int32_t options,
              UErrorCode &errorCode);
 
  static inline int32_t
  compare(const UnicodeString &s1, const UnicodeString &s2,
          uint32_t options,
          UErrorCode &errorCode);
 
  //-------------------------------------------------------------------------
  // Iteration API
  //-------------------------------------------------------------------------
 
  UChar32              current(void);
 
  UChar32              first(void);
 
  UChar32              last(void);
 
  UChar32              next(void);
 
  UChar32              previous(void);
 
  void                 setIndexOnly(int32_t index);
 
  void                reset(void);
 
  int32_t            getIndex(void) const;
 
  int32_t            startIndex(void) const;
 
  int32_t            endIndex(void) const;
 
  UBool        operator==(const Normalizer& that) const;
 
  inline UBool        operator!=(const Normalizer& that) const;
 
  Normalizer*        clone(void) const;
 
  int32_t                hashCode(void) const;
 
  //-------------------------------------------------------------------------
  // Property access methods
  //-------------------------------------------------------------------------
 
  void setMode(UNormalizationMode newMode);
 
  UNormalizationMode getUMode(void) const;
 
  void setOption(int32_t option,
         UBool value);
 
  UBool getOption(int32_t option) const;
 
  void setText(const UnicodeString& newText,
           UErrorCode &status);
 
  void setText(const CharacterIterator& newText,
           UErrorCode &status);
 
  void setText(const UChar* newText,
                    int32_t length,
            UErrorCode &status);
  void            getText(UnicodeString&  result);
 
  static UClassID U_EXPORT2 getStaticClassID();
 
  virtual UClassID getDynamicClassID() const;
 
private:
  //-------------------------------------------------------------------------
  // Private functions
  //-------------------------------------------------------------------------
 
  Normalizer(); // default constructor not implemented
  Normalizer &operator=(const Normalizer &that); // assignment operator not implemented
 
  // Private utility methods for iteration
  // For documentation, see the source code
  UBool nextNormalize();
  UBool previousNormalize();
 
  void    init();
  void    clearBuffer(void);
 
  //-------------------------------------------------------------------------
  // Private data
  //-------------------------------------------------------------------------
 
  FilteredNormalizer2*fFilteredNorm2;  // owned if not NULL
  const Normalizer2  *fNorm2;  // not owned; may be equal to fFilteredNorm2
  UNormalizationMode  fUMode;
  int32_t             fOptions;
 
  // The input text and our position in it
  CharacterIterator  *text;
 
  // The normalization buffer is the result of normalization
  // of the source in [currentIndex..nextIndex[ .
  int32_t         currentIndex, nextIndex;
 
  // A buffer for holding intermediate results
  UnicodeString       buffer;
  int32_t         bufferPos;
};
 
//-------------------------------------------------------------------------
// Inline implementations
//-------------------------------------------------------------------------
 
inline UBool
Normalizer::operator!= (const Normalizer& other) const
{ return ! operator==(other); }
 
inline UNormalizationCheckResult
Normalizer::quickCheck(const UnicodeString& source,
                       UNormalizationMode mode,
                       UErrorCode &status) {
    return quickCheck(source, mode, 0, status);
}
 
inline UBool
Normalizer::isNormalized(const UnicodeString& source,
                         UNormalizationMode mode,
                         UErrorCode &status) {
    return isNormalized(source, mode, 0, status);
}
 
inline int32_t
Normalizer::compare(const UnicodeString &s1, const UnicodeString &s2,
                    uint32_t options,
                    UErrorCode &errorCode) {
  // all argument checking is done in unorm_compare
  return unorm_compare(s1.getBuffer(), s1.length(),
                       s2.getBuffer(), s2.length(),
                       options,
                       &errorCode);
}
 
U_NAMESPACE_END
 
#endif /* #if !UCONFIG_NO_NORMALIZATION */
 
#endif // NORMLZR_H