1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 **********************************************************************
5 * Copyright (c) 2004-2014, International Business Machines
6 * Corporation and others. All Rights Reserved.
7 **********************************************************************
8 * Author: Alan Liu
9 * Created: April 26, 2004
10 * Since: ICU 3.0
11 **********************************************************************
12 */
13 #include "unicode/utypes.h"
14
15 #if !UCONFIG_NO_FORMATTING
16
17 #include "unicode/currunit.h"
18 #include "unicode/ustring.h"
19 #include "unicode/uchar.h"
20 #include "cstring.h"
21 #include "uinvchar.h"
22 #include "charstr.h"
23 #include "ustr_imp.h"
24 #include "measunit_impl.h"
25
26 U_NAMESPACE_BEGIN
27
CurrencyUnit(ConstChar16Ptr _isoCode,UErrorCode & ec)28 CurrencyUnit::CurrencyUnit(ConstChar16Ptr _isoCode, UErrorCode& ec) {
29 // The constructor always leaves the CurrencyUnit in a valid state (with a 3-character currency code).
30 // Note: in ICU4J Currency.getInstance(), we check string length for 3, but in ICU4C we allow a
31 // non-NUL-terminated string to be passed as an argument, so it is not possible to check length.
32 // However, we allow a NUL-terminated empty string, which should have the same behavior as nullptr.
33 // Consider NUL-terminated strings of length 1 or 2 as invalid.
34 bool useDefault = false;
35 if (U_FAILURE(ec) || _isoCode == nullptr || _isoCode[0] == 0) {
36 useDefault = true;
37 } else if (_isoCode[1] == 0 || _isoCode[2] == 0) {
38 useDefault = true;
39 ec = U_ILLEGAL_ARGUMENT_ERROR;
40 } else if (!uprv_isInvariantUString(_isoCode, 3)) {
41 // TODO: Perform a more strict ASCII check like in ICU4J isAlpha3Code?
42 useDefault = true;
43 ec = U_INVARIANT_CONVERSION_ERROR;
44 } else {
45 for (int32_t i=0; i<3; i++) {
46 isoCode[i] = u_asciiToUpper(_isoCode[i]);
47 }
48 isoCode[3] = 0;
49 }
50 if (useDefault) {
51 uprv_memcpy(isoCode, kDefaultCurrency, sizeof(UChar) * 4);
52 }
53 char simpleIsoCode[4];
54 u_UCharsToChars(isoCode, simpleIsoCode, 4);
55 initCurrency(simpleIsoCode);
56 }
57
CurrencyUnit(StringPiece _isoCode,UErrorCode & ec)58 CurrencyUnit::CurrencyUnit(StringPiece _isoCode, UErrorCode& ec) {
59 // Note: unlike the old constructor, reject empty arguments with an error.
60 char isoCodeBuffer[4];
61 const char* isoCodeToUse;
62 // uprv_memchr checks that the string contains no internal NULs
63 if (_isoCode.length() != 3 || uprv_memchr(_isoCode.data(), 0, 3) != nullptr) {
64 isoCodeToUse = kDefaultCurrency8;
65 ec = U_ILLEGAL_ARGUMENT_ERROR;
66 } else if (!uprv_isInvariantString(_isoCode.data(), 3)) {
67 // TODO: Perform a more strict ASCII check like in ICU4J isAlpha3Code?
68 isoCodeToUse = kDefaultCurrency8;
69 ec = U_INVARIANT_CONVERSION_ERROR;
70 } else {
71 // Have to use isoCodeBuffer to ensure the string is NUL-terminated
72 for (int32_t i=0; i<3; i++) {
73 isoCodeBuffer[i] = uprv_toupper(_isoCode.data()[i]);
74 }
75 isoCodeBuffer[3] = 0;
76 isoCodeToUse = isoCodeBuffer;
77 }
78 u_charsToUChars(isoCodeToUse, isoCode, 4);
79 initCurrency(isoCodeToUse);
80 }
81
CurrencyUnit(const CurrencyUnit & other)82 CurrencyUnit::CurrencyUnit(const CurrencyUnit& other) : MeasureUnit(other) {
83 u_strcpy(isoCode, other.isoCode);
84 }
85
CurrencyUnit(const MeasureUnit & other,UErrorCode & ec)86 CurrencyUnit::CurrencyUnit(const MeasureUnit& other, UErrorCode& ec) : MeasureUnit(other) {
87 // Make sure this is a currency.
88 // OK to hard-code the string because we are comparing against another hard-coded string.
89 if (uprv_strcmp("currency", getType()) != 0) {
90 ec = U_ILLEGAL_ARGUMENT_ERROR;
91 isoCode[0] = 0;
92 } else {
93 // Get the ISO Code from the subtype field.
94 u_charsToUChars(getSubtype(), isoCode, 4);
95 isoCode[3] = 0; // make 100% sure it is NUL-terminated
96 }
97 }
98
CurrencyUnit()99 CurrencyUnit::CurrencyUnit() : MeasureUnit() {
100 u_strcpy(isoCode, kDefaultCurrency);
101 char simpleIsoCode[4];
102 u_UCharsToChars(isoCode, simpleIsoCode, 4);
103 initCurrency(simpleIsoCode);
104 }
105
operator =(const CurrencyUnit & other)106 CurrencyUnit& CurrencyUnit::operator=(const CurrencyUnit& other) {
107 if (this == &other) {
108 return *this;
109 }
110 MeasureUnit::operator=(other);
111 u_strcpy(isoCode, other.isoCode);
112 return *this;
113 }
114
clone() const115 CurrencyUnit* CurrencyUnit::clone() const {
116 return new CurrencyUnit(*this);
117 }
118
~CurrencyUnit()119 CurrencyUnit::~CurrencyUnit() {
120 }
121
122 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(CurrencyUnit)
123
124 U_NAMESPACE_END
125
126 #endif // !UCONFIG_NO_FORMATTING
127