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1 /* |
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2 ******************************************************************************* |
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3 * Copyright (C) 2011-2012, International Business Machines |
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4 * Corporation and others. All Rights Reserved. |
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5 ******************************************************************************* |
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6 * file name: messagepattern.cpp |
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7 * encoding: US-ASCII |
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8 * tab size: 8 (not used) |
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9 * indentation:4 |
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10 * |
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11 * created on: 2011mar14 |
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12 * created by: Markus W. Scherer |
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13 */ |
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14 |
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15 #include "unicode/utypes.h" |
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16 |
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17 #if !UCONFIG_NO_FORMATTING |
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18 |
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19 #include "unicode/messagepattern.h" |
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20 #include "unicode/unistr.h" |
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21 #include "unicode/utf16.h" |
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22 #include "cmemory.h" |
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23 #include "cstring.h" |
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24 #include "messageimpl.h" |
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25 #include "patternprops.h" |
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26 #include "putilimp.h" |
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27 #include "uassert.h" |
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28 |
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29 U_NAMESPACE_BEGIN |
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30 |
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31 // Unicode character/code point constants ---------------------------------- *** |
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32 |
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33 static const UChar u_pound=0x23; |
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34 static const UChar u_apos=0x27; |
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35 static const UChar u_plus=0x2B; |
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36 static const UChar u_comma=0x2C; |
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37 static const UChar u_minus=0x2D; |
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38 static const UChar u_dot=0x2E; |
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39 static const UChar u_colon=0x3A; |
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40 static const UChar u_lessThan=0x3C; |
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41 static const UChar u_equal=0x3D; |
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42 static const UChar u_A=0x41; |
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43 static const UChar u_C=0x43; |
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44 static const UChar u_D=0x44; |
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45 static const UChar u_E=0x45; |
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46 static const UChar u_H=0x48; |
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47 static const UChar u_I=0x49; |
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48 static const UChar u_L=0x4C; |
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49 static const UChar u_N=0x4E; |
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50 static const UChar u_O=0x4F; |
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51 static const UChar u_P=0x50; |
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52 static const UChar u_R=0x52; |
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53 static const UChar u_S=0x53; |
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54 static const UChar u_T=0x54; |
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55 static const UChar u_U=0x55; |
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56 static const UChar u_Z=0x5A; |
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57 static const UChar u_a=0x61; |
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58 static const UChar u_c=0x63; |
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59 static const UChar u_d=0x64; |
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60 static const UChar u_e=0x65; |
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61 static const UChar u_f=0x66; |
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62 static const UChar u_h=0x68; |
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63 static const UChar u_i=0x69; |
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64 static const UChar u_l=0x6C; |
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65 static const UChar u_n=0x6E; |
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66 static const UChar u_o=0x6F; |
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67 static const UChar u_p=0x70; |
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68 static const UChar u_r=0x72; |
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69 static const UChar u_s=0x73; |
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70 static const UChar u_t=0x74; |
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71 static const UChar u_u=0x75; |
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72 static const UChar u_z=0x7A; |
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73 static const UChar u_leftCurlyBrace=0x7B; |
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74 static const UChar u_pipe=0x7C; |
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75 static const UChar u_rightCurlyBrace=0x7D; |
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76 static const UChar u_lessOrEqual=0x2264; // U+2264 is <= |
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77 |
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78 static const UChar kOffsetColon[]={ // "offset:" |
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79 u_o, u_f, u_f, u_s, u_e, u_t, u_colon |
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80 }; |
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81 |
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82 static const UChar kOther[]={ // "other" |
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83 u_o, u_t, u_h, u_e, u_r |
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84 }; |
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85 |
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86 // MessagePatternList ------------------------------------------------------ *** |
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87 |
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88 template<typename T, int32_t stackCapacity> |
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89 class MessagePatternList : public UMemory { |
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90 public: |
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91 MessagePatternList() {} |
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92 void copyFrom(const MessagePatternList<T, stackCapacity> &other, |
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93 int32_t length, |
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94 UErrorCode &errorCode); |
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95 UBool ensureCapacityForOneMore(int32_t oldLength, UErrorCode &errorCode); |
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96 UBool equals(const MessagePatternList<T, stackCapacity> &other, int32_t length) const { |
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97 for(int32_t i=0; i<length; ++i) { |
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98 if(a[i]!=other.a[i]) { return FALSE; } |
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99 } |
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100 return TRUE; |
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101 } |
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102 |
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103 MaybeStackArray<T, stackCapacity> a; |
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104 }; |
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105 |
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106 template<typename T, int32_t stackCapacity> |
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107 void |
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108 MessagePatternList<T, stackCapacity>::copyFrom( |
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109 const MessagePatternList<T, stackCapacity> &other, |
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110 int32_t length, |
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111 UErrorCode &errorCode) { |
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112 if(U_SUCCESS(errorCode) && length>0) { |
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113 if(length>a.getCapacity() && NULL==a.resize(length)) { |
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114 errorCode=U_MEMORY_ALLOCATION_ERROR; |
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115 return; |
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116 } |
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117 uprv_memcpy(a.getAlias(), other.a.getAlias(), length*sizeof(T)); |
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118 } |
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119 } |
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120 |
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121 template<typename T, int32_t stackCapacity> |
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122 UBool |
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123 MessagePatternList<T, stackCapacity>::ensureCapacityForOneMore(int32_t oldLength, UErrorCode &errorCode) { |
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124 if(U_FAILURE(errorCode)) { |
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125 return FALSE; |
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126 } |
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127 if(a.getCapacity()>oldLength || a.resize(2*oldLength, oldLength)!=NULL) { |
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128 return TRUE; |
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129 } |
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130 errorCode=U_MEMORY_ALLOCATION_ERROR; |
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131 return FALSE; |
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132 } |
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133 |
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134 // MessagePatternList specializations -------------------------------------- *** |
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135 |
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136 class MessagePatternDoubleList : public MessagePatternList<double, 8> { |
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137 }; |
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138 |
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139 class MessagePatternPartsList : public MessagePatternList<MessagePattern::Part, 32> { |
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140 }; |
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141 |
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142 // MessagePattern constructors etc. ---------------------------------------- *** |
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143 |
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144 MessagePattern::MessagePattern(UErrorCode &errorCode) |
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145 : aposMode(UCONFIG_MSGPAT_DEFAULT_APOSTROPHE_MODE), |
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146 partsList(NULL), parts(NULL), partsLength(0), |
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147 numericValuesList(NULL), numericValues(NULL), numericValuesLength(0), |
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148 hasArgNames(FALSE), hasArgNumbers(FALSE), needsAutoQuoting(FALSE) { |
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149 init(errorCode); |
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150 } |
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151 |
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152 MessagePattern::MessagePattern(UMessagePatternApostropheMode mode, UErrorCode &errorCode) |
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153 : aposMode(mode), |
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154 partsList(NULL), parts(NULL), partsLength(0), |
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155 numericValuesList(NULL), numericValues(NULL), numericValuesLength(0), |
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156 hasArgNames(FALSE), hasArgNumbers(FALSE), needsAutoQuoting(FALSE) { |
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157 init(errorCode); |
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158 } |
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159 |
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160 MessagePattern::MessagePattern(const UnicodeString &pattern, UParseError *parseError, UErrorCode &errorCode) |
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161 : aposMode(UCONFIG_MSGPAT_DEFAULT_APOSTROPHE_MODE), |
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162 partsList(NULL), parts(NULL), partsLength(0), |
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163 numericValuesList(NULL), numericValues(NULL), numericValuesLength(0), |
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164 hasArgNames(FALSE), hasArgNumbers(FALSE), needsAutoQuoting(FALSE) { |
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165 if(init(errorCode)) { |
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166 parse(pattern, parseError, errorCode); |
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167 } |
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168 } |
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169 |
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170 UBool |
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171 MessagePattern::init(UErrorCode &errorCode) { |
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172 if(U_FAILURE(errorCode)) { |
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173 return FALSE; |
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174 } |
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175 partsList=new MessagePatternPartsList(); |
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176 if(partsList==NULL) { |
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177 errorCode=U_MEMORY_ALLOCATION_ERROR; |
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178 return FALSE; |
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179 } |
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180 parts=partsList->a.getAlias(); |
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181 return TRUE; |
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182 } |
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183 |
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184 MessagePattern::MessagePattern(const MessagePattern &other) |
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185 : UObject(other), aposMode(other.aposMode), msg(other.msg), |
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186 partsList(NULL), parts(NULL), partsLength(0), |
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187 numericValuesList(NULL), numericValues(NULL), numericValuesLength(0), |
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188 hasArgNames(other.hasArgNames), hasArgNumbers(other.hasArgNumbers), |
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189 needsAutoQuoting(other.needsAutoQuoting) { |
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190 UErrorCode errorCode=U_ZERO_ERROR; |
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191 if(!copyStorage(other, errorCode)) { |
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192 clear(); |
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193 } |
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194 } |
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195 |
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196 MessagePattern & |
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197 MessagePattern::operator=(const MessagePattern &other) { |
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198 if(this==&other) { |
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199 return *this; |
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200 } |
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201 aposMode=other.aposMode; |
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202 msg=other.msg; |
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203 hasArgNames=other.hasArgNames; |
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204 hasArgNumbers=other.hasArgNumbers; |
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205 needsAutoQuoting=other.needsAutoQuoting; |
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206 UErrorCode errorCode=U_ZERO_ERROR; |
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207 if(!copyStorage(other, errorCode)) { |
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208 clear(); |
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209 } |
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210 return *this; |
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211 } |
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212 |
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213 UBool |
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214 MessagePattern::copyStorage(const MessagePattern &other, UErrorCode &errorCode) { |
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215 if(U_FAILURE(errorCode)) { |
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216 return FALSE; |
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217 } |
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218 parts=NULL; |
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219 partsLength=0; |
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220 numericValues=NULL; |
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221 numericValuesLength=0; |
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222 if(partsList==NULL) { |
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223 partsList=new MessagePatternPartsList(); |
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224 if(partsList==NULL) { |
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225 errorCode=U_MEMORY_ALLOCATION_ERROR; |
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226 return FALSE; |
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227 } |
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228 parts=partsList->a.getAlias(); |
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229 } |
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230 if(other.partsLength>0) { |
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231 partsList->copyFrom(*other.partsList, other.partsLength, errorCode); |
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232 if(U_FAILURE(errorCode)) { |
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233 return FALSE; |
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234 } |
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235 parts=partsList->a.getAlias(); |
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236 partsLength=other.partsLength; |
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237 } |
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238 if(other.numericValuesLength>0) { |
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239 if(numericValuesList==NULL) { |
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240 numericValuesList=new MessagePatternDoubleList(); |
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241 if(numericValuesList==NULL) { |
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242 errorCode=U_MEMORY_ALLOCATION_ERROR; |
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243 return FALSE; |
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244 } |
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245 numericValues=numericValuesList->a.getAlias(); |
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246 } |
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247 numericValuesList->copyFrom( |
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248 *other.numericValuesList, other.numericValuesLength, errorCode); |
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249 if(U_FAILURE(errorCode)) { |
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250 return FALSE; |
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251 } |
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252 numericValues=numericValuesList->a.getAlias(); |
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253 numericValuesLength=other.numericValuesLength; |
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254 } |
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255 return TRUE; |
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256 } |
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257 |
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258 MessagePattern::~MessagePattern() { |
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259 delete partsList; |
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260 delete numericValuesList; |
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261 } |
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262 |
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263 // MessagePattern API ------------------------------------------------------ *** |
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264 |
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265 MessagePattern & |
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266 MessagePattern::parse(const UnicodeString &pattern, UParseError *parseError, UErrorCode &errorCode) { |
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267 preParse(pattern, parseError, errorCode); |
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268 parseMessage(0, 0, 0, UMSGPAT_ARG_TYPE_NONE, parseError, errorCode); |
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269 postParse(); |
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270 return *this; |
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271 } |
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272 |
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273 MessagePattern & |
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274 MessagePattern::parseChoiceStyle(const UnicodeString &pattern, |
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275 UParseError *parseError, UErrorCode &errorCode) { |
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276 preParse(pattern, parseError, errorCode); |
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277 parseChoiceStyle(0, 0, parseError, errorCode); |
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278 postParse(); |
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279 return *this; |
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280 } |
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281 |
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282 MessagePattern & |
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283 MessagePattern::parsePluralStyle(const UnicodeString &pattern, |
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284 UParseError *parseError, UErrorCode &errorCode) { |
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285 preParse(pattern, parseError, errorCode); |
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286 parsePluralOrSelectStyle(UMSGPAT_ARG_TYPE_PLURAL, 0, 0, parseError, errorCode); |
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287 postParse(); |
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288 return *this; |
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289 } |
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290 |
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291 MessagePattern & |
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292 MessagePattern::parseSelectStyle(const UnicodeString &pattern, |
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293 UParseError *parseError, UErrorCode &errorCode) { |
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294 preParse(pattern, parseError, errorCode); |
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295 parsePluralOrSelectStyle(UMSGPAT_ARG_TYPE_SELECT, 0, 0, parseError, errorCode); |
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296 postParse(); |
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297 return *this; |
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298 } |
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299 |
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300 void |
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301 MessagePattern::clear() { |
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302 // Mostly the same as preParse(). |
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303 msg.remove(); |
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304 hasArgNames=hasArgNumbers=FALSE; |
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305 needsAutoQuoting=FALSE; |
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306 partsLength=0; |
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307 numericValuesLength=0; |
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308 } |
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309 |
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310 UBool |
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311 MessagePattern::operator==(const MessagePattern &other) const { |
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312 if(this==&other) { |
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313 return TRUE; |
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314 } |
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315 return |
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316 aposMode==other.aposMode && |
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317 msg==other.msg && |
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318 // parts.equals(o.parts) |
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319 partsLength==other.partsLength && |
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320 (partsLength==0 || partsList->equals(*other.partsList, partsLength)); |
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321 // No need to compare numericValues if msg and parts are the same. |
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322 } |
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323 |
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324 int32_t |
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325 MessagePattern::hashCode() const { |
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326 int32_t hash=(aposMode*37+msg.hashCode())*37+partsLength; |
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327 for(int32_t i=0; i<partsLength; ++i) { |
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328 hash=hash*37+parts[i].hashCode(); |
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329 } |
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330 return hash; |
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331 } |
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332 |
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333 int32_t |
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334 MessagePattern::validateArgumentName(const UnicodeString &name) { |
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335 if(!PatternProps::isIdentifier(name.getBuffer(), name.length())) { |
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336 return UMSGPAT_ARG_NAME_NOT_VALID; |
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337 } |
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338 return parseArgNumber(name, 0, name.length()); |
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339 } |
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340 |
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341 UnicodeString |
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342 MessagePattern::autoQuoteApostropheDeep() const { |
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343 if(!needsAutoQuoting) { |
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344 return msg; |
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345 } |
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346 UnicodeString modified(msg); |
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347 // Iterate backward so that the insertion indexes do not change. |
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348 int32_t count=countParts(); |
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349 for(int32_t i=count; i>0;) { |
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350 const Part &part=getPart(--i); |
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351 if(part.getType()==UMSGPAT_PART_TYPE_INSERT_CHAR) { |
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352 modified.insert(part.index, (UChar)part.value); |
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353 } |
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354 } |
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355 return modified; |
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356 } |
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357 |
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358 double |
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359 MessagePattern::getNumericValue(const Part &part) const { |
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360 UMessagePatternPartType type=part.type; |
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361 if(type==UMSGPAT_PART_TYPE_ARG_INT) { |
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362 return part.value; |
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363 } else if(type==UMSGPAT_PART_TYPE_ARG_DOUBLE) { |
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364 return numericValues[part.value]; |
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365 } else { |
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366 return UMSGPAT_NO_NUMERIC_VALUE; |
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367 } |
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368 } |
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369 |
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370 /** |
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371 * Returns the "offset:" value of a PluralFormat argument, or 0 if none is specified. |
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372 * @param pluralStart the index of the first PluralFormat argument style part. (0..countParts()-1) |
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373 * @return the "offset:" value. |
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374 * @draft ICU 4.8 |
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375 */ |
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376 double |
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377 MessagePattern::getPluralOffset(int32_t pluralStart) const { |
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378 const Part &part=getPart(pluralStart); |
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379 if(Part::hasNumericValue(part.type)) { |
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380 return getNumericValue(part); |
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381 } else { |
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382 return 0; |
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383 } |
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384 } |
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385 |
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386 // MessagePattern::Part ---------------------------------------------------- *** |
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387 |
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388 UBool |
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389 MessagePattern::Part::operator==(const Part &other) const { |
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390 if(this==&other) { |
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391 return TRUE; |
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392 } |
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393 return |
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394 type==other.type && |
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395 index==other.index && |
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396 length==other.length && |
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397 value==other.value && |
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398 limitPartIndex==other.limitPartIndex; |
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399 } |
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400 |
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401 // MessagePattern parser --------------------------------------------------- *** |
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402 |
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403 void |
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404 MessagePattern::preParse(const UnicodeString &pattern, UParseError *parseError, UErrorCode &errorCode) { |
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405 if(U_FAILURE(errorCode)) { |
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406 return; |
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407 } |
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408 if(parseError!=NULL) { |
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409 parseError->line=0; |
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410 parseError->offset=0; |
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411 parseError->preContext[0]=0; |
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412 parseError->postContext[0]=0; |
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413 } |
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414 msg=pattern; |
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415 hasArgNames=hasArgNumbers=FALSE; |
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416 needsAutoQuoting=FALSE; |
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417 partsLength=0; |
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418 numericValuesLength=0; |
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419 } |
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420 |
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421 void |
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422 MessagePattern::postParse() { |
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423 if(partsList!=NULL) { |
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424 parts=partsList->a.getAlias(); |
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425 } |
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426 if(numericValuesList!=NULL) { |
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427 numericValues=numericValuesList->a.getAlias(); |
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428 } |
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429 } |
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430 |
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431 int32_t |
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432 MessagePattern::parseMessage(int32_t index, int32_t msgStartLength, |
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433 int32_t nestingLevel, UMessagePatternArgType parentType, |
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434 UParseError *parseError, UErrorCode &errorCode) { |
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435 if(U_FAILURE(errorCode)) { |
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436 return 0; |
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437 } |
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438 if(nestingLevel>Part::MAX_VALUE) { |
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439 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; |
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440 return 0; |
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441 } |
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442 int32_t msgStart=partsLength; |
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443 addPart(UMSGPAT_PART_TYPE_MSG_START, index, msgStartLength, nestingLevel, errorCode); |
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444 index+=msgStartLength; |
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445 for(;;) { // while(index<msg.length()) with U_FAILURE(errorCode) check |
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446 if(U_FAILURE(errorCode)) { |
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447 return 0; |
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448 } |
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449 if(index>=msg.length()) { |
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450 break; |
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451 } |
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452 UChar c=msg.charAt(index++); |
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453 if(c==u_apos) { |
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454 if(index==msg.length()) { |
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455 // The apostrophe is the last character in the pattern. |
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456 // Add a Part for auto-quoting. |
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457 addPart(UMSGPAT_PART_TYPE_INSERT_CHAR, index, 0, |
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458 u_apos, errorCode); // value=char to be inserted |
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459 needsAutoQuoting=TRUE; |
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460 } else { |
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461 c=msg.charAt(index); |
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462 if(c==u_apos) { |
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463 // double apostrophe, skip the second one |
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464 addPart(UMSGPAT_PART_TYPE_SKIP_SYNTAX, index++, 1, 0, errorCode); |
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465 } else if( |
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466 aposMode==UMSGPAT_APOS_DOUBLE_REQUIRED || |
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467 c==u_leftCurlyBrace || c==u_rightCurlyBrace || |
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468 (parentType==UMSGPAT_ARG_TYPE_CHOICE && c==u_pipe) || |
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469 (UMSGPAT_ARG_TYPE_HAS_PLURAL_STYLE(parentType) && c==u_pound) |
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470 ) { |
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471 // skip the quote-starting apostrophe |
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472 addPart(UMSGPAT_PART_TYPE_SKIP_SYNTAX, index-1, 1, 0, errorCode); |
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473 // find the end of the quoted literal text |
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474 for(;;) { |
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475 index=msg.indexOf(u_apos, index+1); |
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476 if(index>=0) { |
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477 if(/*(index+1)<msg.length() &&*/ msg.charAt(index+1)==u_apos) { |
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478 // double apostrophe inside quoted literal text |
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479 // still encodes a single apostrophe, skip the second one |
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480 addPart(UMSGPAT_PART_TYPE_SKIP_SYNTAX, ++index, 1, 0, errorCode); |
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481 } else { |
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482 // skip the quote-ending apostrophe |
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483 addPart(UMSGPAT_PART_TYPE_SKIP_SYNTAX, index++, 1, 0, errorCode); |
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484 break; |
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485 } |
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486 } else { |
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487 // The quoted text reaches to the end of the of the message. |
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488 index=msg.length(); |
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489 // Add a Part for auto-quoting. |
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490 addPart(UMSGPAT_PART_TYPE_INSERT_CHAR, index, 0, |
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491 u_apos, errorCode); // value=char to be inserted |
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492 needsAutoQuoting=TRUE; |
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493 break; |
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494 } |
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495 } |
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496 } else { |
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497 // Interpret the apostrophe as literal text. |
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498 // Add a Part for auto-quoting. |
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499 addPart(UMSGPAT_PART_TYPE_INSERT_CHAR, index, 0, |
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500 u_apos, errorCode); // value=char to be inserted |
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501 needsAutoQuoting=TRUE; |
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502 } |
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503 } |
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504 } else if(UMSGPAT_ARG_TYPE_HAS_PLURAL_STYLE(parentType) && c==u_pound) { |
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505 // The unquoted # in a plural message fragment will be replaced |
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506 // with the (number-offset). |
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507 addPart(UMSGPAT_PART_TYPE_REPLACE_NUMBER, index-1, 1, 0, errorCode); |
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508 } else if(c==u_leftCurlyBrace) { |
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509 index=parseArg(index-1, 1, nestingLevel, parseError, errorCode); |
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510 } else if((nestingLevel>0 && c==u_rightCurlyBrace) || |
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511 (parentType==UMSGPAT_ARG_TYPE_CHOICE && c==u_pipe)) { |
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512 // Finish the message before the terminator. |
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513 // In a choice style, report the "}" substring only for the following ARG_LIMIT, |
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514 // not for this MSG_LIMIT. |
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515 int32_t limitLength=(parentType==UMSGPAT_ARG_TYPE_CHOICE && c==u_rightCurlyBrace) ? 0 : 1; |
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516 addLimitPart(msgStart, UMSGPAT_PART_TYPE_MSG_LIMIT, index-1, limitLength, |
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517 nestingLevel, errorCode); |
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518 if(parentType==UMSGPAT_ARG_TYPE_CHOICE) { |
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519 // Let the choice style parser see the '}' or '|'. |
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520 return index-1; |
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521 } else { |
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522 // continue parsing after the '}' |
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523 return index; |
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524 } |
|
525 } // else: c is part of literal text |
|
526 } |
|
527 if(nestingLevel>0 && !inTopLevelChoiceMessage(nestingLevel, parentType)) { |
|
528 setParseError(parseError, 0); // Unmatched '{' braces in message. |
|
529 errorCode=U_UNMATCHED_BRACES; |
|
530 return 0; |
|
531 } |
|
532 addLimitPart(msgStart, UMSGPAT_PART_TYPE_MSG_LIMIT, index, 0, nestingLevel, errorCode); |
|
533 return index; |
|
534 } |
|
535 |
|
536 int32_t |
|
537 MessagePattern::parseArg(int32_t index, int32_t argStartLength, int32_t nestingLevel, |
|
538 UParseError *parseError, UErrorCode &errorCode) { |
|
539 int32_t argStart=partsLength; |
|
540 UMessagePatternArgType argType=UMSGPAT_ARG_TYPE_NONE; |
|
541 addPart(UMSGPAT_PART_TYPE_ARG_START, index, argStartLength, argType, errorCode); |
|
542 if(U_FAILURE(errorCode)) { |
|
543 return 0; |
|
544 } |
|
545 int32_t nameIndex=index=skipWhiteSpace(index+argStartLength); |
|
546 if(index==msg.length()) { |
|
547 setParseError(parseError, 0); // Unmatched '{' braces in message. |
|
548 errorCode=U_UNMATCHED_BRACES; |
|
549 return 0; |
|
550 } |
|
551 // parse argument name or number |
|
552 index=skipIdentifier(index); |
|
553 int32_t number=parseArgNumber(nameIndex, index); |
|
554 if(number>=0) { |
|
555 int32_t length=index-nameIndex; |
|
556 if(length>Part::MAX_LENGTH || number>Part::MAX_VALUE) { |
|
557 setParseError(parseError, nameIndex); // Argument number too large. |
|
558 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; |
|
559 return 0; |
|
560 } |
|
561 hasArgNumbers=TRUE; |
|
562 addPart(UMSGPAT_PART_TYPE_ARG_NUMBER, nameIndex, length, number, errorCode); |
|
563 } else if(number==UMSGPAT_ARG_NAME_NOT_NUMBER) { |
|
564 int32_t length=index-nameIndex; |
|
565 if(length>Part::MAX_LENGTH) { |
|
566 setParseError(parseError, nameIndex); // Argument name too long. |
|
567 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; |
|
568 return 0; |
|
569 } |
|
570 hasArgNames=TRUE; |
|
571 addPart(UMSGPAT_PART_TYPE_ARG_NAME, nameIndex, length, 0, errorCode); |
|
572 } else { // number<-1 (ARG_NAME_NOT_VALID) |
|
573 setParseError(parseError, nameIndex); // Bad argument syntax. |
|
574 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
575 return 0; |
|
576 } |
|
577 index=skipWhiteSpace(index); |
|
578 if(index==msg.length()) { |
|
579 setParseError(parseError, 0); // Unmatched '{' braces in message. |
|
580 errorCode=U_UNMATCHED_BRACES; |
|
581 return 0; |
|
582 } |
|
583 UChar c=msg.charAt(index); |
|
584 if(c==u_rightCurlyBrace) { |
|
585 // all done |
|
586 } else if(c!=u_comma) { |
|
587 setParseError(parseError, nameIndex); // Bad argument syntax. |
|
588 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
589 return 0; |
|
590 } else /* ',' */ { |
|
591 // parse argument type: case-sensitive a-zA-Z |
|
592 int32_t typeIndex=index=skipWhiteSpace(index+1); |
|
593 while(index<msg.length() && isArgTypeChar(msg.charAt(index))) { |
|
594 ++index; |
|
595 } |
|
596 int32_t length=index-typeIndex; |
|
597 index=skipWhiteSpace(index); |
|
598 if(index==msg.length()) { |
|
599 setParseError(parseError, 0); // Unmatched '{' braces in message. |
|
600 errorCode=U_UNMATCHED_BRACES; |
|
601 return 0; |
|
602 } |
|
603 if(length==0 || ((c=msg.charAt(index))!=u_comma && c!=u_rightCurlyBrace)) { |
|
604 setParseError(parseError, nameIndex); // Bad argument syntax. |
|
605 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
606 return 0; |
|
607 } |
|
608 if(length>Part::MAX_LENGTH) { |
|
609 setParseError(parseError, nameIndex); // Argument type name too long. |
|
610 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; |
|
611 return 0; |
|
612 } |
|
613 argType=UMSGPAT_ARG_TYPE_SIMPLE; |
|
614 if(length==6) { |
|
615 // case-insensitive comparisons for complex-type names |
|
616 if(isChoice(typeIndex)) { |
|
617 argType=UMSGPAT_ARG_TYPE_CHOICE; |
|
618 } else if(isPlural(typeIndex)) { |
|
619 argType=UMSGPAT_ARG_TYPE_PLURAL; |
|
620 } else if(isSelect(typeIndex)) { |
|
621 argType=UMSGPAT_ARG_TYPE_SELECT; |
|
622 } |
|
623 } else if(length==13) { |
|
624 if(isSelect(typeIndex) && isOrdinal(typeIndex+6)) { |
|
625 argType=UMSGPAT_ARG_TYPE_SELECTORDINAL; |
|
626 } |
|
627 } |
|
628 // change the ARG_START type from NONE to argType |
|
629 partsList->a[argStart].value=(int16_t)argType; |
|
630 if(argType==UMSGPAT_ARG_TYPE_SIMPLE) { |
|
631 addPart(UMSGPAT_PART_TYPE_ARG_TYPE, typeIndex, length, 0, errorCode); |
|
632 } |
|
633 // look for an argument style (pattern) |
|
634 if(c==u_rightCurlyBrace) { |
|
635 if(argType!=UMSGPAT_ARG_TYPE_SIMPLE) { |
|
636 setParseError(parseError, nameIndex); // No style field for complex argument. |
|
637 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
638 return 0; |
|
639 } |
|
640 } else /* ',' */ { |
|
641 ++index; |
|
642 if(argType==UMSGPAT_ARG_TYPE_SIMPLE) { |
|
643 index=parseSimpleStyle(index, parseError, errorCode); |
|
644 } else if(argType==UMSGPAT_ARG_TYPE_CHOICE) { |
|
645 index=parseChoiceStyle(index, nestingLevel, parseError, errorCode); |
|
646 } else { |
|
647 index=parsePluralOrSelectStyle(argType, index, nestingLevel, parseError, errorCode); |
|
648 } |
|
649 } |
|
650 } |
|
651 // Argument parsing stopped on the '}'. |
|
652 addLimitPart(argStart, UMSGPAT_PART_TYPE_ARG_LIMIT, index, 1, argType, errorCode); |
|
653 return index+1; |
|
654 } |
|
655 |
|
656 int32_t |
|
657 MessagePattern::parseSimpleStyle(int32_t index, UParseError *parseError, UErrorCode &errorCode) { |
|
658 if(U_FAILURE(errorCode)) { |
|
659 return 0; |
|
660 } |
|
661 int32_t start=index; |
|
662 int32_t nestedBraces=0; |
|
663 while(index<msg.length()) { |
|
664 UChar c=msg.charAt(index++); |
|
665 if(c==u_apos) { |
|
666 // Treat apostrophe as quoting but include it in the style part. |
|
667 // Find the end of the quoted literal text. |
|
668 index=msg.indexOf(u_apos, index); |
|
669 if(index<0) { |
|
670 // Quoted literal argument style text reaches to the end of the message. |
|
671 setParseError(parseError, start); |
|
672 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
673 return 0; |
|
674 } |
|
675 // skip the quote-ending apostrophe |
|
676 ++index; |
|
677 } else if(c==u_leftCurlyBrace) { |
|
678 ++nestedBraces; |
|
679 } else if(c==u_rightCurlyBrace) { |
|
680 if(nestedBraces>0) { |
|
681 --nestedBraces; |
|
682 } else { |
|
683 int32_t length=--index-start; |
|
684 if(length>Part::MAX_LENGTH) { |
|
685 setParseError(parseError, start); // Argument style text too long. |
|
686 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; |
|
687 return 0; |
|
688 } |
|
689 addPart(UMSGPAT_PART_TYPE_ARG_STYLE, start, length, 0, errorCode); |
|
690 return index; |
|
691 } |
|
692 } // c is part of literal text |
|
693 } |
|
694 setParseError(parseError, 0); // Unmatched '{' braces in message. |
|
695 errorCode=U_UNMATCHED_BRACES; |
|
696 return 0; |
|
697 } |
|
698 |
|
699 int32_t |
|
700 MessagePattern::parseChoiceStyle(int32_t index, int32_t nestingLevel, |
|
701 UParseError *parseError, UErrorCode &errorCode) { |
|
702 if(U_FAILURE(errorCode)) { |
|
703 return 0; |
|
704 } |
|
705 int32_t start=index; |
|
706 index=skipWhiteSpace(index); |
|
707 if(index==msg.length() || msg.charAt(index)==u_rightCurlyBrace) { |
|
708 setParseError(parseError, 0); // Missing choice argument pattern. |
|
709 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
710 return 0; |
|
711 } |
|
712 for(;;) { |
|
713 // The choice argument style contains |-separated (number, separator, message) triples. |
|
714 // Parse the number. |
|
715 int32_t numberIndex=index; |
|
716 index=skipDouble(index); |
|
717 int32_t length=index-numberIndex; |
|
718 if(length==0) { |
|
719 setParseError(parseError, start); // Bad choice pattern syntax. |
|
720 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
721 return 0; |
|
722 } |
|
723 if(length>Part::MAX_LENGTH) { |
|
724 setParseError(parseError, numberIndex); // Choice number too long. |
|
725 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; |
|
726 return 0; |
|
727 } |
|
728 parseDouble(numberIndex, index, TRUE, parseError, errorCode); // adds ARG_INT or ARG_DOUBLE |
|
729 if(U_FAILURE(errorCode)) { |
|
730 return 0; |
|
731 } |
|
732 // Parse the separator. |
|
733 index=skipWhiteSpace(index); |
|
734 if(index==msg.length()) { |
|
735 setParseError(parseError, start); // Bad choice pattern syntax. |
|
736 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
737 return 0; |
|
738 } |
|
739 UChar c=msg.charAt(index); |
|
740 if(!(c==u_pound || c==u_lessThan || c==u_lessOrEqual)) { // U+2264 is <= |
|
741 setParseError(parseError, start); // Expected choice separator (#<\u2264) instead of c. |
|
742 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
743 return 0; |
|
744 } |
|
745 addPart(UMSGPAT_PART_TYPE_ARG_SELECTOR, index, 1, 0, errorCode); |
|
746 // Parse the message fragment. |
|
747 index=parseMessage(++index, 0, nestingLevel+1, UMSGPAT_ARG_TYPE_CHOICE, parseError, errorCode); |
|
748 if(U_FAILURE(errorCode)) { |
|
749 return 0; |
|
750 } |
|
751 // parseMessage(..., CHOICE) returns the index of the terminator, or msg.length(). |
|
752 if(index==msg.length()) { |
|
753 return index; |
|
754 } |
|
755 if(msg.charAt(index)==u_rightCurlyBrace) { |
|
756 if(!inMessageFormatPattern(nestingLevel)) { |
|
757 setParseError(parseError, start); // Bad choice pattern syntax. |
|
758 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
759 return 0; |
|
760 } |
|
761 return index; |
|
762 } // else the terminator is '|' |
|
763 index=skipWhiteSpace(index+1); |
|
764 } |
|
765 } |
|
766 |
|
767 int32_t |
|
768 MessagePattern::parsePluralOrSelectStyle(UMessagePatternArgType argType, |
|
769 int32_t index, int32_t nestingLevel, |
|
770 UParseError *parseError, UErrorCode &errorCode) { |
|
771 if(U_FAILURE(errorCode)) { |
|
772 return 0; |
|
773 } |
|
774 int32_t start=index; |
|
775 UBool isEmpty=TRUE; |
|
776 UBool hasOther=FALSE; |
|
777 for(;;) { |
|
778 // First, collect the selector looking for a small set of terminators. |
|
779 // It would be a little faster to consider the syntax of each possible |
|
780 // token right here, but that makes the code too complicated. |
|
781 index=skipWhiteSpace(index); |
|
782 UBool eos=index==msg.length(); |
|
783 if(eos || msg.charAt(index)==u_rightCurlyBrace) { |
|
784 if(eos==inMessageFormatPattern(nestingLevel)) { |
|
785 setParseError(parseError, start); // Bad plural/select pattern syntax. |
|
786 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
787 return 0; |
|
788 } |
|
789 if(!hasOther) { |
|
790 setParseError(parseError, 0); // Missing 'other' keyword in plural/select pattern. |
|
791 errorCode=U_DEFAULT_KEYWORD_MISSING; |
|
792 return 0; |
|
793 } |
|
794 return index; |
|
795 } |
|
796 int32_t selectorIndex=index; |
|
797 if(UMSGPAT_ARG_TYPE_HAS_PLURAL_STYLE(argType) && msg.charAt(selectorIndex)==u_equal) { |
|
798 // explicit-value plural selector: =double |
|
799 index=skipDouble(index+1); |
|
800 int32_t length=index-selectorIndex; |
|
801 if(length==1) { |
|
802 setParseError(parseError, start); // Bad plural/select pattern syntax. |
|
803 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
804 return 0; |
|
805 } |
|
806 if(length>Part::MAX_LENGTH) { |
|
807 setParseError(parseError, selectorIndex); // Argument selector too long. |
|
808 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; |
|
809 return 0; |
|
810 } |
|
811 addPart(UMSGPAT_PART_TYPE_ARG_SELECTOR, selectorIndex, length, 0, errorCode); |
|
812 parseDouble(selectorIndex+1, index, FALSE, |
|
813 parseError, errorCode); // adds ARG_INT or ARG_DOUBLE |
|
814 } else { |
|
815 index=skipIdentifier(index); |
|
816 int32_t length=index-selectorIndex; |
|
817 if(length==0) { |
|
818 setParseError(parseError, start); // Bad plural/select pattern syntax. |
|
819 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
820 return 0; |
|
821 } |
|
822 // Note: The ':' in "offset:" is just beyond the skipIdentifier() range. |
|
823 if( UMSGPAT_ARG_TYPE_HAS_PLURAL_STYLE(argType) && length==6 && index<msg.length() && |
|
824 0==msg.compare(selectorIndex, 7, kOffsetColon, 0, 7) |
|
825 ) { |
|
826 // plural offset, not a selector |
|
827 if(!isEmpty) { |
|
828 // Plural argument 'offset:' (if present) must precede key-message pairs. |
|
829 setParseError(parseError, start); |
|
830 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
831 return 0; |
|
832 } |
|
833 // allow whitespace between offset: and its value |
|
834 int32_t valueIndex=skipWhiteSpace(index+1); // The ':' is at index. |
|
835 index=skipDouble(valueIndex); |
|
836 if(index==valueIndex) { |
|
837 setParseError(parseError, start); // Missing value for plural 'offset:'. |
|
838 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
839 return 0; |
|
840 } |
|
841 if((index-valueIndex)>Part::MAX_LENGTH) { |
|
842 setParseError(parseError, valueIndex); // Plural offset value too long. |
|
843 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; |
|
844 return 0; |
|
845 } |
|
846 parseDouble(valueIndex, index, FALSE, |
|
847 parseError, errorCode); // adds ARG_INT or ARG_DOUBLE |
|
848 if(U_FAILURE(errorCode)) { |
|
849 return 0; |
|
850 } |
|
851 isEmpty=FALSE; |
|
852 continue; // no message fragment after the offset |
|
853 } else { |
|
854 // normal selector word |
|
855 if(length>Part::MAX_LENGTH) { |
|
856 setParseError(parseError, selectorIndex); // Argument selector too long. |
|
857 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; |
|
858 return 0; |
|
859 } |
|
860 addPart(UMSGPAT_PART_TYPE_ARG_SELECTOR, selectorIndex, length, 0, errorCode); |
|
861 if(0==msg.compare(selectorIndex, length, kOther, 0, 5)) { |
|
862 hasOther=TRUE; |
|
863 } |
|
864 } |
|
865 } |
|
866 if(U_FAILURE(errorCode)) { |
|
867 return 0; |
|
868 } |
|
869 |
|
870 // parse the message fragment following the selector |
|
871 index=skipWhiteSpace(index); |
|
872 if(index==msg.length() || msg.charAt(index)!=u_leftCurlyBrace) { |
|
873 setParseError(parseError, selectorIndex); // No message fragment after plural/select selector. |
|
874 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
875 return 0; |
|
876 } |
|
877 index=parseMessage(index, 1, nestingLevel+1, argType, parseError, errorCode); |
|
878 if(U_FAILURE(errorCode)) { |
|
879 return 0; |
|
880 } |
|
881 isEmpty=FALSE; |
|
882 } |
|
883 } |
|
884 |
|
885 int32_t |
|
886 MessagePattern::parseArgNumber(const UnicodeString &s, int32_t start, int32_t limit) { |
|
887 // If the identifier contains only ASCII digits, then it is an argument _number_ |
|
888 // and must not have leading zeros (except "0" itself). |
|
889 // Otherwise it is an argument _name_. |
|
890 if(start>=limit) { |
|
891 return UMSGPAT_ARG_NAME_NOT_VALID; |
|
892 } |
|
893 int32_t number; |
|
894 // Defer numeric errors until we know there are only digits. |
|
895 UBool badNumber; |
|
896 UChar c=s.charAt(start++); |
|
897 if(c==0x30) { |
|
898 if(start==limit) { |
|
899 return 0; |
|
900 } else { |
|
901 number=0; |
|
902 badNumber=TRUE; // leading zero |
|
903 } |
|
904 } else if(0x31<=c && c<=0x39) { |
|
905 number=c-0x30; |
|
906 badNumber=FALSE; |
|
907 } else { |
|
908 return UMSGPAT_ARG_NAME_NOT_NUMBER; |
|
909 } |
|
910 while(start<limit) { |
|
911 c=s.charAt(start++); |
|
912 if(0x30<=c && c<=0x39) { |
|
913 if(number>=INT32_MAX/10) { |
|
914 badNumber=TRUE; // overflow |
|
915 } |
|
916 number=number*10+(c-0x30); |
|
917 } else { |
|
918 return UMSGPAT_ARG_NAME_NOT_NUMBER; |
|
919 } |
|
920 } |
|
921 // There are only ASCII digits. |
|
922 if(badNumber) { |
|
923 return UMSGPAT_ARG_NAME_NOT_VALID; |
|
924 } else { |
|
925 return number; |
|
926 } |
|
927 } |
|
928 |
|
929 void |
|
930 MessagePattern::parseDouble(int32_t start, int32_t limit, UBool allowInfinity, |
|
931 UParseError *parseError, UErrorCode &errorCode) { |
|
932 if(U_FAILURE(errorCode)) { |
|
933 return; |
|
934 } |
|
935 U_ASSERT(start<limit); |
|
936 // fake loop for easy exit and single throw statement |
|
937 for(;;) { /*loop doesn't iterate*/ |
|
938 // fast path for small integers and infinity |
|
939 int32_t value=0; |
|
940 int32_t isNegative=0; // not boolean so that we can easily add it to value |
|
941 int32_t index=start; |
|
942 UChar c=msg.charAt(index++); |
|
943 if(c==u_minus) { |
|
944 isNegative=1; |
|
945 if(index==limit) { |
|
946 break; // no number |
|
947 } |
|
948 c=msg.charAt(index++); |
|
949 } else if(c==u_plus) { |
|
950 if(index==limit) { |
|
951 break; // no number |
|
952 } |
|
953 c=msg.charAt(index++); |
|
954 } |
|
955 if(c==0x221e) { // infinity |
|
956 if(allowInfinity && index==limit) { |
|
957 double infinity=uprv_getInfinity(); |
|
958 addArgDoublePart( |
|
959 isNegative!=0 ? -infinity : infinity, |
|
960 start, limit-start, errorCode); |
|
961 return; |
|
962 } else { |
|
963 break; |
|
964 } |
|
965 } |
|
966 // try to parse the number as a small integer but fall back to a double |
|
967 while('0'<=c && c<='9') { |
|
968 value=value*10+(c-'0'); |
|
969 if(value>(Part::MAX_VALUE+isNegative)) { |
|
970 break; // not a small-enough integer |
|
971 } |
|
972 if(index==limit) { |
|
973 addPart(UMSGPAT_PART_TYPE_ARG_INT, start, limit-start, |
|
974 isNegative!=0 ? -value : value, errorCode); |
|
975 return; |
|
976 } |
|
977 c=msg.charAt(index++); |
|
978 } |
|
979 // Let Double.parseDouble() throw a NumberFormatException. |
|
980 char numberChars[128]; |
|
981 int32_t capacity=(int32_t)sizeof(numberChars); |
|
982 int32_t length=limit-start; |
|
983 if(length>=capacity) { |
|
984 break; // number too long |
|
985 } |
|
986 msg.extract(start, length, numberChars, capacity, US_INV); |
|
987 if((int32_t)uprv_strlen(numberChars)<length) { |
|
988 break; // contains non-invariant character that was turned into NUL |
|
989 } |
|
990 char *end; |
|
991 double numericValue=uprv_strtod(numberChars, &end); |
|
992 if(end!=(numberChars+length)) { |
|
993 break; // parsing error |
|
994 } |
|
995 addArgDoublePart(numericValue, start, length, errorCode); |
|
996 return; |
|
997 } |
|
998 setParseError(parseError, start /*, limit*/); // Bad syntax for numeric value. |
|
999 errorCode=U_PATTERN_SYNTAX_ERROR; |
|
1000 return; |
|
1001 } |
|
1002 |
|
1003 int32_t |
|
1004 MessagePattern::skipWhiteSpace(int32_t index) { |
|
1005 const UChar *s=msg.getBuffer(); |
|
1006 int32_t msgLength=msg.length(); |
|
1007 const UChar *t=PatternProps::skipWhiteSpace(s+index, msgLength-index); |
|
1008 return (int32_t)(t-s); |
|
1009 } |
|
1010 |
|
1011 int32_t |
|
1012 MessagePattern::skipIdentifier(int32_t index) { |
|
1013 const UChar *s=msg.getBuffer(); |
|
1014 int32_t msgLength=msg.length(); |
|
1015 const UChar *t=PatternProps::skipIdentifier(s+index, msgLength-index); |
|
1016 return (int32_t)(t-s); |
|
1017 } |
|
1018 |
|
1019 int32_t |
|
1020 MessagePattern::skipDouble(int32_t index) { |
|
1021 int32_t msgLength=msg.length(); |
|
1022 while(index<msgLength) { |
|
1023 UChar c=msg.charAt(index); |
|
1024 // U+221E: Allow the infinity symbol, for ChoiceFormat patterns. |
|
1025 if((c<0x30 && c!=u_plus && c!=u_minus && c!=u_dot) || (c>0x39 && c!=u_e && c!=u_E && c!=0x221e)) { |
|
1026 break; |
|
1027 } |
|
1028 ++index; |
|
1029 } |
|
1030 return index; |
|
1031 } |
|
1032 |
|
1033 UBool |
|
1034 MessagePattern::isArgTypeChar(UChar32 c) { |
|
1035 return (u_a<=c && c<=u_z) || (u_A<=c && c<=u_Z); |
|
1036 } |
|
1037 |
|
1038 UBool |
|
1039 MessagePattern::isChoice(int32_t index) { |
|
1040 UChar c; |
|
1041 return |
|
1042 ((c=msg.charAt(index++))==u_c || c==u_C) && |
|
1043 ((c=msg.charAt(index++))==u_h || c==u_H) && |
|
1044 ((c=msg.charAt(index++))==u_o || c==u_O) && |
|
1045 ((c=msg.charAt(index++))==u_i || c==u_I) && |
|
1046 ((c=msg.charAt(index++))==u_c || c==u_C) && |
|
1047 ((c=msg.charAt(index))==u_e || c==u_E); |
|
1048 } |
|
1049 |
|
1050 UBool |
|
1051 MessagePattern::isPlural(int32_t index) { |
|
1052 UChar c; |
|
1053 return |
|
1054 ((c=msg.charAt(index++))==u_p || c==u_P) && |
|
1055 ((c=msg.charAt(index++))==u_l || c==u_L) && |
|
1056 ((c=msg.charAt(index++))==u_u || c==u_U) && |
|
1057 ((c=msg.charAt(index++))==u_r || c==u_R) && |
|
1058 ((c=msg.charAt(index++))==u_a || c==u_A) && |
|
1059 ((c=msg.charAt(index))==u_l || c==u_L); |
|
1060 } |
|
1061 |
|
1062 UBool |
|
1063 MessagePattern::isSelect(int32_t index) { |
|
1064 UChar c; |
|
1065 return |
|
1066 ((c=msg.charAt(index++))==u_s || c==u_S) && |
|
1067 ((c=msg.charAt(index++))==u_e || c==u_E) && |
|
1068 ((c=msg.charAt(index++))==u_l || c==u_L) && |
|
1069 ((c=msg.charAt(index++))==u_e || c==u_E) && |
|
1070 ((c=msg.charAt(index++))==u_c || c==u_C) && |
|
1071 ((c=msg.charAt(index))==u_t || c==u_T); |
|
1072 } |
|
1073 |
|
1074 UBool |
|
1075 MessagePattern::isOrdinal(int32_t index) { |
|
1076 UChar c; |
|
1077 return |
|
1078 ((c=msg.charAt(index++))==u_o || c==u_O) && |
|
1079 ((c=msg.charAt(index++))==u_r || c==u_R) && |
|
1080 ((c=msg.charAt(index++))==u_d || c==u_D) && |
|
1081 ((c=msg.charAt(index++))==u_i || c==u_I) && |
|
1082 ((c=msg.charAt(index++))==u_n || c==u_N) && |
|
1083 ((c=msg.charAt(index++))==u_a || c==u_A) && |
|
1084 ((c=msg.charAt(index))==u_l || c==u_L); |
|
1085 } |
|
1086 |
|
1087 UBool |
|
1088 MessagePattern::inMessageFormatPattern(int32_t nestingLevel) { |
|
1089 return nestingLevel>0 || partsList->a[0].type==UMSGPAT_PART_TYPE_MSG_START; |
|
1090 } |
|
1091 |
|
1092 UBool |
|
1093 MessagePattern::inTopLevelChoiceMessage(int32_t nestingLevel, UMessagePatternArgType parentType) { |
|
1094 return |
|
1095 nestingLevel==1 && |
|
1096 parentType==UMSGPAT_ARG_TYPE_CHOICE && |
|
1097 partsList->a[0].type!=UMSGPAT_PART_TYPE_MSG_START; |
|
1098 } |
|
1099 |
|
1100 void |
|
1101 MessagePattern::addPart(UMessagePatternPartType type, int32_t index, int32_t length, |
|
1102 int32_t value, UErrorCode &errorCode) { |
|
1103 if(partsList->ensureCapacityForOneMore(partsLength, errorCode)) { |
|
1104 Part &part=partsList->a[partsLength++]; |
|
1105 part.type=type; |
|
1106 part.index=index; |
|
1107 part.length=(uint16_t)length; |
|
1108 part.value=(int16_t)value; |
|
1109 part.limitPartIndex=0; |
|
1110 } |
|
1111 } |
|
1112 |
|
1113 void |
|
1114 MessagePattern::addLimitPart(int32_t start, |
|
1115 UMessagePatternPartType type, int32_t index, int32_t length, |
|
1116 int32_t value, UErrorCode &errorCode) { |
|
1117 partsList->a[start].limitPartIndex=partsLength; |
|
1118 addPart(type, index, length, value, errorCode); |
|
1119 } |
|
1120 |
|
1121 void |
|
1122 MessagePattern::addArgDoublePart(double numericValue, int32_t start, int32_t length, |
|
1123 UErrorCode &errorCode) { |
|
1124 if(U_FAILURE(errorCode)) { |
|
1125 return; |
|
1126 } |
|
1127 int32_t numericIndex=numericValuesLength; |
|
1128 if(numericValuesList==NULL) { |
|
1129 numericValuesList=new MessagePatternDoubleList(); |
|
1130 if(numericValuesList==NULL) { |
|
1131 errorCode=U_MEMORY_ALLOCATION_ERROR; |
|
1132 return; |
|
1133 } |
|
1134 } else if(!numericValuesList->ensureCapacityForOneMore(numericValuesLength, errorCode)) { |
|
1135 return; |
|
1136 } else { |
|
1137 if(numericIndex>Part::MAX_VALUE) { |
|
1138 errorCode=U_INDEX_OUTOFBOUNDS_ERROR; |
|
1139 return; |
|
1140 } |
|
1141 } |
|
1142 numericValuesList->a[numericValuesLength++]=numericValue; |
|
1143 addPart(UMSGPAT_PART_TYPE_ARG_DOUBLE, start, length, numericIndex, errorCode); |
|
1144 } |
|
1145 |
|
1146 void |
|
1147 MessagePattern::setParseError(UParseError *parseError, int32_t index) { |
|
1148 if(parseError==NULL) { |
|
1149 return; |
|
1150 } |
|
1151 parseError->offset=index; |
|
1152 |
|
1153 // Set preContext to some of msg before index. |
|
1154 // Avoid splitting a surrogate pair. |
|
1155 int32_t length=index; |
|
1156 if(length>=U_PARSE_CONTEXT_LEN) { |
|
1157 length=U_PARSE_CONTEXT_LEN-1; |
|
1158 if(length>0 && U16_IS_TRAIL(msg[index-length])) { |
|
1159 --length; |
|
1160 } |
|
1161 } |
|
1162 msg.extract(index-length, length, parseError->preContext); |
|
1163 parseError->preContext[length]=0; |
|
1164 |
|
1165 // Set postContext to some of msg starting at index. |
|
1166 length=msg.length()-index; |
|
1167 if(length>=U_PARSE_CONTEXT_LEN) { |
|
1168 length=U_PARSE_CONTEXT_LEN-1; |
|
1169 if(length>0 && U16_IS_LEAD(msg[index+length-1])) { |
|
1170 --length; |
|
1171 } |
|
1172 } |
|
1173 msg.extract(index, length, parseError->postContext); |
|
1174 parseError->postContext[length]=0; |
|
1175 } |
|
1176 |
|
1177 // MessageImpl ------------------------------------------------------------- *** |
|
1178 |
|
1179 void |
|
1180 MessageImpl::appendReducedApostrophes(const UnicodeString &s, int32_t start, int32_t limit, |
|
1181 UnicodeString &sb) { |
|
1182 int32_t doubleApos=-1; |
|
1183 for(;;) { |
|
1184 int32_t i=s.indexOf(u_apos, start); |
|
1185 if(i<0 || i>=limit) { |
|
1186 sb.append(s, start, limit-start); |
|
1187 break; |
|
1188 } |
|
1189 if(i==doubleApos) { |
|
1190 // Double apostrophe at start-1 and start==i, append one. |
|
1191 sb.append(u_apos); |
|
1192 ++start; |
|
1193 doubleApos=-1; |
|
1194 } else { |
|
1195 // Append text between apostrophes and skip this one. |
|
1196 sb.append(s, start, i-start); |
|
1197 doubleApos=start=i+1; |
|
1198 } |
|
1199 } |
|
1200 } |
|
1201 |
|
1202 // Ported from second half of ICU4J SelectFormat.format(String). |
|
1203 UnicodeString & |
|
1204 MessageImpl::appendSubMessageWithoutSkipSyntax(const MessagePattern &msgPattern, |
|
1205 int32_t msgStart, |
|
1206 UnicodeString &result) { |
|
1207 const UnicodeString &msgString=msgPattern.getPatternString(); |
|
1208 int32_t prevIndex=msgPattern.getPart(msgStart).getLimit(); |
|
1209 for(int32_t i=msgStart;;) { |
|
1210 const MessagePattern::Part &part=msgPattern.getPart(++i); |
|
1211 UMessagePatternPartType type=part.getType(); |
|
1212 int32_t index=part.getIndex(); |
|
1213 if(type==UMSGPAT_PART_TYPE_MSG_LIMIT) { |
|
1214 return result.append(msgString, prevIndex, index-prevIndex); |
|
1215 } else if(type==UMSGPAT_PART_TYPE_SKIP_SYNTAX) { |
|
1216 result.append(msgString, prevIndex, index-prevIndex); |
|
1217 prevIndex=part.getLimit(); |
|
1218 } else if(type==UMSGPAT_PART_TYPE_ARG_START) { |
|
1219 result.append(msgString, prevIndex, index-prevIndex); |
|
1220 prevIndex=index; |
|
1221 i=msgPattern.getLimitPartIndex(i); |
|
1222 index=msgPattern.getPart(i).getLimit(); |
|
1223 appendReducedApostrophes(msgString, prevIndex, index, result); |
|
1224 prevIndex=index; |
|
1225 } |
|
1226 } |
|
1227 } |
|
1228 |
|
1229 U_NAMESPACE_END |
|
1230 |
|
1231 #endif // !UCONFIG_NO_FORMATTING |