format.cpp (6313B)
1 // © 2016 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 /* 4 ******************************************************************************* 5 * Copyright (C) 1997-2012, International Business Machines Corporation and * 6 * others. All Rights Reserved. * 7 ******************************************************************************* 8 * 9 * File FORMAT.CPP 10 * 11 * Modification History: 12 * 13 * Date Name Description 14 * 02/19/97 aliu Converted from java. 15 * 03/17/97 clhuang Implemented with new APIs. 16 * 03/27/97 helena Updated to pass the simple test after code review. 17 * 07/20/98 stephen Added explicit init values for Field/ParsePosition 18 ******************************************************************************** 19 */ 20 // ***************************************************************************** 21 // This file was generated from the java source file Format.java 22 // ***************************************************************************** 23 24 #include "utypeinfo.h" // for 'typeid' to work 25 26 #include "unicode/utypes.h" 27 28 #ifndef U_I18N_IMPLEMENTATION 29 #error U_I18N_IMPLEMENTATION not set - must be set for all ICU source files in i18n/ - see https://unicode-org.github.io/icu/userguide/howtouseicu 30 #endif 31 32 /* 33 * Dummy code: 34 * If all modules in the I18N library are switched off, then there are no 35 * library exports and MSVC 6 writes a .dll but not a .lib file. 36 * Unless we export _something_ in that case... 37 */ 38 #if UCONFIG_NO_COLLATION && UCONFIG_NO_FORMATTING && UCONFIG_NO_TRANSLITERATION 39 U_CAPI int32_t U_EXPORT2 40 uprv_icuin_lib_dummy(int32_t i) { 41 return -i; 42 } 43 #endif 44 45 /* Format class implementation ---------------------------------------------- */ 46 47 #if !UCONFIG_NO_FORMATTING 48 49 #include "unicode/format.h" 50 #include "unicode/ures.h" 51 #include "cstring.h" 52 #include "locbased.h" 53 54 // ***************************************************************************** 55 // class Format 56 // ***************************************************************************** 57 58 U_NAMESPACE_BEGIN 59 60 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(FieldPosition) 61 62 FieldPosition::~FieldPosition() {} 63 64 FieldPosition * 65 FieldPosition::clone() const { 66 return new FieldPosition(*this); 67 } 68 69 // ------------------------------------- 70 // default constructor 71 72 Format::Format() 73 : UObject(), actualLocale(Locale::getRoot()), validLocale(Locale::getRoot()) 74 { 75 } 76 77 // ------------------------------------- 78 79 Format::~Format() 80 { 81 } 82 83 // ------------------------------------- 84 // copy constructor 85 86 Format::Format(const Format &that) 87 : UObject(that) 88 { 89 *this = that; 90 } 91 92 // ------------------------------------- 93 // assignment operator 94 95 Format& 96 Format::operator=(const Format& that) 97 { 98 if (this != &that) { 99 actualLocale = that.actualLocale; 100 validLocale = that.validLocale; 101 } 102 return *this; 103 } 104 105 // ------------------------------------- 106 // Formats the obj and append the result in the buffer, toAppendTo. 107 // This calls the actual implementation in the concrete subclasses. 108 109 UnicodeString& 110 Format::format(const Formattable& obj, 111 UnicodeString& toAppendTo, 112 UErrorCode& status) const 113 { 114 if (U_FAILURE(status)) return toAppendTo; 115 116 FieldPosition pos(FieldPosition::DONT_CARE); 117 118 return format(obj, toAppendTo, pos, status); 119 } 120 121 // ------------------------------------- 122 // Default implementation sets unsupported error; subclasses should 123 // override. 124 125 UnicodeString& 126 Format::format(const Formattable& /* unused obj */, 127 UnicodeString& toAppendTo, 128 FieldPositionIterator* /* unused posIter */, 129 UErrorCode& status) const 130 { 131 if (!U_FAILURE(status)) { 132 status = U_UNSUPPORTED_ERROR; 133 } 134 return toAppendTo; 135 } 136 137 // ------------------------------------- 138 // Parses the source string and create the corresponding 139 // result object. Checks the parse position for errors. 140 141 void 142 Format::parseObject(const UnicodeString& source, 143 Formattable& result, 144 UErrorCode& status) const 145 { 146 if (U_FAILURE(status)) return; 147 148 ParsePosition parsePosition(0); 149 parseObject(source, result, parsePosition); 150 if (parsePosition.getIndex() == 0) { 151 status = U_INVALID_FORMAT_ERROR; 152 } 153 } 154 155 // ------------------------------------- 156 157 bool 158 Format::operator==(const Format& that) const 159 { 160 // Subclasses: Call this method and then add more specific checks. 161 return typeid(*this) == typeid(that); 162 } 163 //--------------------------------------- 164 165 /** 166 * Simple function for initializing a UParseError from a UnicodeString. 167 * 168 * @param pattern The pattern to copy into the parseError 169 * @param pos The position in pattern where the error occurred 170 * @param parseError The UParseError object to fill in 171 * @draft ICU 2.4 172 */ 173 void Format::syntaxError(const UnicodeString& pattern, 174 int32_t pos, 175 UParseError& parseError) { 176 parseError.offset = pos; 177 parseError.line=0; // we are not using line number 178 179 // for pre-context 180 int32_t start = (pos < U_PARSE_CONTEXT_LEN)? 0 : (pos - (U_PARSE_CONTEXT_LEN-1 181 /* subtract 1 so that we have room for null*/)); 182 int32_t stop = pos; 183 pattern.extract(start,stop-start,parseError.preContext,0); 184 //null terminate the buffer 185 parseError.preContext[stop-start] = 0; 186 187 //for post-context 188 start = pos+1; 189 stop = ((pos+U_PARSE_CONTEXT_LEN)<=pattern.length()) ? (pos+(U_PARSE_CONTEXT_LEN-1)) : 190 pattern.length(); 191 pattern.extract(start,stop-start,parseError.postContext,0); 192 //null terminate the buffer 193 parseError.postContext[stop-start]= 0; 194 } 195 196 Locale 197 Format::getLocale(ULocDataLocaleType type, UErrorCode& status) const { 198 return LocaleBased::getLocale(validLocale, actualLocale, type, status); 199 } 200 201 const char * 202 Format::getLocaleID(ULocDataLocaleType type, UErrorCode& status) const { 203 return LocaleBased::getLocaleID(validLocale,actualLocale, type, status); 204 } 205 206 void 207 Format::setLocaleIDs(const char* valid, const char* actual) { 208 actualLocale = Locale(actual); 209 validLocale = Locale(valid); 210 } 211 212 U_NAMESPACE_END 213 214 #endif /* #if !UCONFIG_NO_FORMATTING */ 215 216 //eof