1 /* 2 ******************************************************************************* 3 * Copyright (C) 2008-2011, Google, International Business Machines Corporation 4 * and others. All Rights Reserved. 5 ******************************************************************************* 6 */ 7 8 #ifndef __TMUTFMT_H__ 9 #define __TMUTFMT_H__ 10 11 #include "unicode/utypes.h" 12 13 /** 14 * \file 15 * \brief C++ API: Format and parse duration in single time unit 16 */ 17 18 19 #if !UCONFIG_NO_FORMATTING 20 21 #include "unicode/unistr.h" 22 #include "unicode/tmunit.h" 23 #include "unicode/tmutamt.h" 24 #include "unicode/measfmt.h" 25 #include "unicode/numfmt.h" 26 #include "unicode/plurrule.h" 27 28 /** 29 * Constants for various styles. 30 * There are 2 styles: full name and abbreviated name. 31 * For example, for English, the full name for hour duration is "3 hours", 32 * and the abbreviated name is "3 hrs". 33 * @draft ICU 4.8 34 */ 35 enum UTimeUnitFormatStyle { 36 /** @draft ICU 4.8 */ 37 UTMUTFMT_FULL_STYLE, 38 /** @draft ICU 4.8 */ 39 UTMUTFMT_ABBREVIATED_STYLE, 40 /** @draft ICU 4.8 */ 41 UTMUTFMT_FORMAT_STYLE_COUNT 42 }; 43 typedef enum UTimeUnitFormatStyle UTimeUnitFormatStyle; /**< @draft ICU 4.8 */ 44 45 U_NAMESPACE_BEGIN 46 47 class Hashtable; 48 49 50 /** 51 * Format or parse a TimeUnitAmount, using plural rules for the units where available. 52 * 53 * <P> 54 * Code Sample: 55 * <pre> 56 * // create time unit amount instance - a combination of Number and time unit 57 * UErrorCode status = U_ZERO_ERROR; 58 * TimeUnitAmount* source = new TimeUnitAmount(2, TimeUnit::UTIMEUNIT_YEAR, status); 59 * // create time unit format instance 60 * TimeUnitFormat* format = new TimeUnitFormat(Locale("en"), status); 61 * // format a time unit amount 62 * UnicodeString formatted; 63 * Formattable formattable; 64 * if (U_SUCCESS(status)) { 65 * formattable.adoptObject(source); 66 * formatted = ((Format*)format)->format(formattable, formatted, status); 67 * Formattable result; 68 * ((Format*)format)->parseObject(formatted, result, status); 69 * if (U_SUCCESS(status)) { 70 * assert (result == formattable); 71 * } 72 * } 73 * </pre> 74 * 75 * <P> 76 * @see TimeUnitAmount 77 * @see TimeUnitFormat 78 * @draft ICU 4.2 79 */ 80 class U_I18N_API TimeUnitFormat: public MeasureFormat { 81 public: 82 83 /** 84 * Create TimeUnitFormat with default locale, and full name style. 85 * Use setLocale and/or setFormat to modify. 86 * @stable ICU 4.2 87 */ 88 TimeUnitFormat(UErrorCode& status); 89 90 /** 91 * Create TimeUnitFormat given locale, and full name style. 92 * @stable ICU 4.2 93 */ 94 TimeUnitFormat(const Locale& locale, UErrorCode& status); 95 96 /** 97 * Create TimeUnitFormat given locale and style. 98 * @draft ICU 4.8 99 */ 100 TimeUnitFormat(const Locale& locale, UTimeUnitFormatStyle style, UErrorCode& status); 101 102 /** 103 * Copy constructor. 104 * @stable ICU 4.2 105 */ 106 TimeUnitFormat(const TimeUnitFormat&); 107 108 /** 109 * deconstructor 110 * @stable ICU 4.2 111 */ 112 virtual ~TimeUnitFormat(); 113 114 /** 115 * Clone this Format object polymorphically. The caller owns the result and 116 * should delete it when done. 117 * @return A copy of the object. 118 * @stable ICU 4.2 119 */ 120 virtual Format* clone(void) const; 121 122 /** 123 * Assignment operator 124 * @stable ICU 4.2 125 */ 126 TimeUnitFormat& operator=(const TimeUnitFormat& other); 127 128 129 /** 130 * Return true if the given Format objects are semantically equal. Objects 131 * of different subclasses are considered unequal. 132 * @param other the object to be compared with. 133 * @return true if the given Format objects are semantically equal. 134 * @stable ICU 4.2 135 */ 136 virtual UBool operator==(const Format& other) const; 137 138 /** 139 * Return true if the given Format objects are not semantically equal. 140 * Objects of different subclasses are considered unequal. 141 * @param other the object to be compared with. 142 * @return true if the given Format objects are not semantically equal. 143 * @stable ICU 4.2 144 */ 145 UBool operator!=(const Format& other) const; 146 147 /** 148 * Set the locale used for formatting or parsing. 149 * @param locale the locale to be set 150 * @param status output param set to success/failure code on exit 151 * @stable ICU 4.2 152 */ 153 void setLocale(const Locale& locale, UErrorCode& status); 154 155 156 /** 157 * Set the number format used for formatting or parsing. 158 * @param format the number formatter to be set 159 * @param status output param set to success/failure code on exit 160 * @stable ICU 4.2 161 */ 162 void setNumberFormat(const NumberFormat& format, UErrorCode& status); 163 164 165 using MeasureFormat::format; 166 167 /** 168 * Format a TimeUnitAmount. 169 * If the formattable object is not a time unit amount object, 170 * or the number in time unit amount is not a double type or long type 171 * numeric, it returns a failing status: U_ILLEGAL_ARGUMENT_ERROR. 172 * @see Format#format(const Formattable&, UnicodeString&, FieldPosition&, UErrorCode&) const 173 * @stable ICU 4.2 174 */ 175 virtual UnicodeString& format(const Formattable& obj, 176 UnicodeString& toAppendTo, 177 FieldPosition& pos, 178 UErrorCode& status) const; 179 180 /** 181 * Parse a TimeUnitAmount. 182 * @see Format#parseObject(const UnicodeString&, Formattable&, ParsePosition&) const; 183 * @stable ICU 4.2 184 */ 185 virtual void parseObject(const UnicodeString& source, 186 Formattable& result, 187 ParsePosition& pos) const; 188 189 /** 190 * Return the class ID for this class. This is useful only for comparing to 191 * a return value from getDynamicClassID(). For example: 192 * <pre> 193 * . Base* polymorphic_pointer = createPolymorphicObject(); 194 * . if (polymorphic_pointer->getDynamicClassID() == 195 * . erived::getStaticClassID()) ... 196 * </pre> 197 * @return The class ID for all objects of this class. 198 * @stable ICU 4.2 199 */ 200 static UClassID U_EXPORT2 getStaticClassID(void); 201 202 /** 203 * Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This 204 * method is to implement a simple version of RTTI, since not all C++ 205 * compilers support genuine RTTI. Polymorphic operator==() and clone() 206 * methods call this method. 207 * 208 * @return The class ID for this object. All objects of a 209 * given class have the same class ID. Objects of 210 * other classes have different class IDs. 211 * @stable ICU 4.2 212 */ 213 virtual UClassID getDynamicClassID(void) const; 214 215 private: 216 NumberFormat* fNumberFormat; 217 Locale fLocale; 218 Hashtable* fTimeUnitToCountToPatterns[TimeUnit::UTIMEUNIT_FIELD_COUNT]; 219 PluralRules* fPluralRules; 220 UTimeUnitFormatStyle fStyle; 221 222 void create(const Locale& locale, UTimeUnitFormatStyle style, UErrorCode& status); 223 224 // it might actually be simpler to make them Decimal Formats later. 225 // initialize all private data members 226 void setup(UErrorCode& status); 227 228 // initialize data member without fill in data for fTimeUnitToCountToPattern 229 void initDataMembers(UErrorCode& status); 230 231 // initialize fTimeUnitToCountToPatterns from current locale's resource. 232 void readFromCurrentLocale(UTimeUnitFormatStyle style, const char* key, UErrorCode& status); 233 234 // check completeness of fTimeUnitToCountToPatterns against all time units, 235 // and all plural rules, fill in fallback as necessary. 236 void checkConsistency(UTimeUnitFormatStyle style, const char* key, UErrorCode& status); 237 238 // fill in fTimeUnitToCountToPatterns from locale fall-back chain 239 void searchInLocaleChain(UTimeUnitFormatStyle style, const char* key, const char* localeName, 240 TimeUnit::UTimeUnitFields field, const UnicodeString&, 241 const char*, Hashtable*, UErrorCode&); 242 243 // initialize hash table 244 Hashtable* initHash(UErrorCode& status); 245 246 // delete hash table 247 void deleteHash(Hashtable* htable); 248 249 // copy hash table 250 void copyHash(const Hashtable* source, Hashtable* target, UErrorCode& status); 251 // get time unit name, such as "year", from time unit field enum, such as 252 // UTIMEUNIT_YEAR. 253 static const char* getTimeUnitName(TimeUnit::UTimeUnitFields field, UErrorCode& status); 254 }; 255 256 257 258 inline UBool 259 TimeUnitFormat::operator!=(const Format& other) const { 260 return !operator==(other); 261 } 262 263 264 265 U_NAMESPACE_END 266 267 #endif /* #if !UCONFIG_NO_FORMATTING */ 268 269 #endif // __TMUTFMT_H__ 270 //eof 271
