1/*
2**********************************************************************
3*   Copyright (C) 1999-2008, International Business Machines
4*   Corporation and others.  All Rights Reserved.
5**********************************************************************
6*   Date        Name        Description
7*   11/17/99    aliu        Creation.
8**********************************************************************
9*/
10
11#include "unicode/utypes.h"
12#include "umutex.h"
13
14#if !UCONFIG_NO_TRANSLITERATION
15
16#include "unicode/unistr.h"
17#include "unicode/uniset.h"
18#include "rbt_data.h"
19#include "hash.h"
20#include "cmemory.h"
21
22U_NAMESPACE_BEGIN
23
24TransliterationRuleData::TransliterationRuleData(UErrorCode& status)
25 : UMemory(), ruleSet(status), variableNames(status),
26    variables(0), variablesAreOwned(TRUE)
27{
28    if (U_FAILURE(status)) {
29        return;
30    }
31    variableNames.setValueDeleter(uhash_deleteUnicodeString);
32    variables = 0;
33    variablesLength = 0;
34}
35
36TransliterationRuleData::TransliterationRuleData(const TransliterationRuleData& other) :
37    UMemory(other), ruleSet(other.ruleSet),
38    variablesAreOwned(TRUE),
39    variablesBase(other.variablesBase),
40    variablesLength(other.variablesLength)
41{
42    UErrorCode status = U_ZERO_ERROR;
43    int32_t i = 0;
44    variableNames.setValueDeleter(uhash_deleteUnicodeString);
45    int32_t pos = -1;
46    const UHashElement *e;
47    while ((e = other.variableNames.nextElement(pos)) != 0) {
48        UnicodeString* value =
49            new UnicodeString(*(const UnicodeString*)e->value.pointer);
50        // Exit out if value could not be created.
51        if (value == NULL) {
52        	return;
53        }
54        variableNames.put(*(UnicodeString*)e->key.pointer, value, status);
55    }
56
57    variables = 0;
58    if (other.variables != 0) {
59        variables = (UnicodeFunctor **)uprv_malloc(variablesLength * sizeof(UnicodeFunctor *));
60        /* test for NULL */
61        if (variables == 0) {
62            status = U_MEMORY_ALLOCATION_ERROR;
63            return;
64        }
65        for (i=0; i<variablesLength; ++i) {
66            variables[i] = other.variables[i]->clone();
67            if (variables[i] == NULL) {
68                status = U_MEMORY_ALLOCATION_ERROR;
69                break;
70            }
71        }
72    }
73    // Remove the array and exit if memory allocation error occured.
74    if (U_FAILURE(status)) {
75        for (int32_t n = i-1; n >= 0; n++) {
76            delete variables[n];
77        }
78        uprv_free(variables);
79        variables = NULL;
80        return;
81    }
82
83    // Do this last, _after_ setting up variables[].
84    ruleSet.setData(this); // ruleSet must already be frozen
85}
86
87TransliterationRuleData::~TransliterationRuleData() {
88    if (variablesAreOwned && variables != 0) {
89        for (int32_t i=0; i<variablesLength; ++i) {
90            delete variables[i];
91        }
92    }
93    uprv_free(variables);
94}
95
96UnicodeFunctor*
97TransliterationRuleData::lookup(UChar32 standIn) const {
98    int32_t i = standIn - variablesBase;
99    return (i >= 0 && i < variablesLength) ? variables[i] : 0;
100}
101
102UnicodeMatcher*
103TransliterationRuleData::lookupMatcher(UChar32 standIn) const {
104    UnicodeFunctor *f = lookup(standIn);
105    return (f != 0) ? f->toMatcher() : 0;
106}
107
108UnicodeReplacer*
109TransliterationRuleData::lookupReplacer(UChar32 standIn) const {
110    UnicodeFunctor *f = lookup(standIn);
111    return (f != 0) ? f->toReplacer() : 0;
112}
113
114
115U_NAMESPACE_END
116
117#endif /* #if !UCONFIG_NO_TRANSLITERATION */
118