icuSources/i18n/rbt_data.cpp

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 **********************************************************************
   5 *   Copyright (C) 1999-2014, International Business Machines
   6 *   Corporation and others.  All Rights Reserved.
   7 **********************************************************************
   8 *   Date        Name        Description
   9 *   11/17/99    aliu        Creation.
  10 **********************************************************************
  11 */
  12
  13 #include "unicode/utypes.h"
  14 #include "umutex.h"
  15
  16 #if !UCONFIG_NO_TRANSLITERATION
  17
  18 #include "unicode/unistr.h"
  19 #include "unicode/uniset.h"
  20 #include "rbt_data.h"
  21 #include "hash.h"
  22 #include "cmemory.h"
  23
  24 U_NAMESPACE_BEGIN
  25
  26 TransliterationRuleData::TransliterationRuleData(UErrorCode& status)
  27  : UMemory(), ruleSet(status), variableNames(status),
  28     variables(0), variablesAreOwned(TRUE)
  29 {
  30     if (U_FAILURE(status)) {
  31         return;
  32     }
  33     variableNames.setValueDeleter(uprv_deleteUObject);
  34     variables = 0;
  35     variablesLength = 0;
  36 }
  37
  38 TransliterationRuleData::TransliterationRuleData(const TransliterationRuleData& other) :
  39     UMemory(other), ruleSet(other.ruleSet),
  40     variablesAreOwned(TRUE),
  41     variablesBase(other.variablesBase),
  42     variablesLength(other.variablesLength)
  43 {
  44     UErrorCode status = U_ZERO_ERROR;
  45     int32_t i = 0;
  46     variableNames.setValueDeleter(uprv_deleteUObject);
  47     int32_t pos = UHASH_FIRST;
  48     const UHashElement *e;
  49     while ((e = other.variableNames.nextElement(pos)) != 0) {
  50         UnicodeString* value =
  51             new UnicodeString(*(const UnicodeString*)e->value.pointer);
  52         // Exit out if value could not be created.
  53         if (value == NULL) {
  54                 return;
  55         }
  56         variableNames.put(*(UnicodeString*)e->key.pointer, value, status);
  57     }
  58
  59     variables = 0;
  60     if (other.variables != 0) {
  61         variables = (UnicodeFunctor **)uprv_malloc(variablesLength * sizeof(UnicodeFunctor *));
  62         /* test for NULL */
  63         if (variables == 0) {
  64             status = U_MEMORY_ALLOCATION_ERROR;
  65             return;
  66         }
  67         for (i=0; i<variablesLength; ++i) {
  68             variables[i] = other.variables[i]->clone();
  69             if (variables[i] == NULL) {
  70                 status = U_MEMORY_ALLOCATION_ERROR;
  71                 break;
  72             }
  73         }
  74     }
  75     // Remove the array and exit if memory allocation error occured.
  76     if (U_FAILURE(status)) {
  77         for (int32_t n = i-1; n >= 0; n--) {
  78             delete variables[n];
  79         }
  80         uprv_free(variables);
  81         variables = NULL;
  82         return;
  83     }
  84
  85     // Do this last, _after_ setting up variables[].
  86     ruleSet.setData(this); // ruleSet must already be frozen
  87 }
  88
  89 TransliterationRuleData::~TransliterationRuleData() {
  90     if (variablesAreOwned && variables != 0) {
  91         for (int32_t i=0; i<variablesLength; ++i) {
  92             delete variables[i];
  93         }
  94     }
  95     uprv_free(variables);
  96 }
  97
  98 UnicodeFunctor*
  99 TransliterationRuleData::lookup(UChar32 standIn) const {
 100     int32_t i = standIn - variablesBase;
 101     return (i >= 0 && i < variablesLength) ? variables[i] : 0;
 102 }
 103
 104 UnicodeMatcher*
 105 TransliterationRuleData::lookupMatcher(UChar32 standIn) const {
 106     UnicodeFunctor *f = lookup(standIn);
 107     return (f != 0) ? f->toMatcher() : 0;
 108 }
 109
 110 UnicodeReplacer*
 111 TransliterationRuleData::lookupReplacer(UChar32 standIn) const {
 112     UnicodeFunctor *f = lookup(standIn);
 113     return (f != 0) ? f->toReplacer() : 0;
 114 }
 115
 116
 117 U_NAMESPACE_END
 118
 119 #endif /* #if !UCONFIG_NO_TRANSLITERATION */