source/common/unorm.cpp

/*
*******************************************************************************
* Copyright © {1996-2001}, International Business Machines Corporation and others. All Rights Reserved.
*******************************************************************************
* File unorm.cpp
*
* Created by: Vladimir Weinstein 12052000
*
*/

#include "unicode/unorm.h"
#include "unicode/normlzr.h"
#include "unicode/ustring.h"
#include "cpputils.h"

U_CAPI int32_t
u_normalize(const UChar*            source,
        int32_t                 sourceLength, 
        UNormalizationMode      mode, 
        int32_t                 option,
        UChar*                  result,
        int32_t                 resultLength,
        UErrorCode*             status)
{
  if(U_FAILURE(*status)) return -1;

  Normalizer::EMode normMode;
  switch(mode) {
  case UCOL_NO_NORMALIZATION:
    normMode = Normalizer::NO_OP;
    break;
  case UCOL_DECOMP_CAN:
    normMode = Normalizer::DECOMP;
    break;
  case UCOL_DECOMP_COMPAT:
    normMode = Normalizer::DECOMP_COMPAT;
    break;
  case UCOL_DECOMP_CAN_COMP_COMPAT:
    normMode = Normalizer::COMPOSE;
    break;
  case UCOL_DECOMP_COMPAT_COMP_CAN:
    normMode = Normalizer::COMPOSE_COMPAT;
    break;
  default:
    *status = U_ILLEGAL_ARGUMENT_ERROR;
    return -1;
  }

  int32_t len = (sourceLength == -1 ? u_strlen(source) : sourceLength);
  const UnicodeString src((UChar*)source, len, len);
  UnicodeString dst(result, 0, resultLength);
  Normalizer::normalize(src, normMode, option, dst, *status);
  int32_t actualLen;
  T_fillOutputParams(&dst, result, resultLength, &actualLen, status);
  return actualLen;
}