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      1 /********************************************************************
      2  * COPYRIGHT:
      3  * Copyright (c) 1999-2002, International Business Machines Corporation and
      4  * others. All Rights Reserved.
      5  ********************************************************************/
      6 
      7 #include "unaccent.h"
      8 
      9 /**
     10  * Constructor
     11  */
     12 UnaccentTransliterator::UnaccentTransliterator() :
     13     normalizer("", Normalizer::DECOMP),
     14     Transliterator("Unaccent", 0) {
     15 }
     16 
     17 /**
     18  * Destructor
     19  */
     20 UnaccentTransliterator::~UnaccentTransliterator() {
     21 }
     22 
     23 /**
     24  * Remove accents from a character using Normalizer.
     25  */
     26 UChar UnaccentTransliterator::unaccent(UChar c) const {
     27     UnicodeString str(c);
     28     UErrorCode status = U_ZERO_ERROR;
     29     UnaccentTransliterator* t = (UnaccentTransliterator*)this;
     30 
     31     t->normalizer.setText(str, status);
     32     if (U_FAILURE(status)) {
     33         return c;
     34     }
     35     return (UChar) t->normalizer.next();
     36 }
     37 
     38 /**
     39  * Implement Transliterator API
     40  */
     41 void UnaccentTransliterator::handleTransliterate(Replaceable& text,
     42                                                  UTransPosition& index,
     43                                                  UBool incremental) const {
     44     UnicodeString str("a");
     45     while (index.start < index.limit) {
     46         UChar c = text.charAt(index.start);
     47         UChar d = unaccent(c);
     48         if (c != d) {
     49             str.setCharAt(0, d);
     50             text.handleReplaceBetween(index.start, index.start+1, str);
     51         }
     52         index.start++;
     53     }
     54 }
     55