icuSources/i18n/format.cpp

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