icuSources/i18n/format.cpp

   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 http://userguide.icu-project.org/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()
  74 {
  75     *validLocale = *actualLocale = 0;
  76 }
  77
  78 // -------------------------------------
  79
  80 Format::~Format()
  81 {
  82 }
  83
  84 // -------------------------------------
  85 // copy constructor
  86
  87 Format::Format(const Format &that)
  88     : UObject(that)
  89 {
  90     *this = that;
  91 }
  92
  93 // -------------------------------------
  94 // assignment operator
  95
  96 Format&
  97 Format::operator=(const Format& that)
  98 {
  99     if (this != &that) {
 100         uprv_strcpy(validLocale, that.validLocale);
 101         uprv_strcpy(actualLocale, that.actualLocale);
 102     }
 103     return *this;
 104 }
 105
 106 // -------------------------------------
 107 // Formats the obj and append the result in the buffer, toAppendTo.
 108 // This calls the actual implementation in the concrete subclasses.
 109
 110 UnicodeString&
 111 Format::format(const Formattable& obj,
 112                UnicodeString& toAppendTo,
 113                UErrorCode& status) const
 114 {
 115     if (U_FAILURE(status)) return toAppendTo;
 116
 117     FieldPosition pos(FieldPosition::DONT_CARE);
 118
 119     return format(obj, toAppendTo, pos, status);
 120 }
 121
 122 // -------------------------------------
 123 // Default implementation sets unsupported error; subclasses should
 124 // override.
 125
 126 UnicodeString&
 127 Format::format(const Formattable& /* unused obj */,
 128                UnicodeString& toAppendTo,
 129                FieldPositionIterator* /* unused posIter */,
 130                UErrorCode& status) const
 131 {
 132     if (!U_FAILURE(status)) {
 133       status = U_UNSUPPORTED_ERROR;
 134     }
 135     return toAppendTo;
 136 }
 137
 138 // -------------------------------------
 139 // Parses the source string and create the corresponding
 140 // result object.  Checks the parse position for errors.
 141
 142 void
 143 Format::parseObject(const UnicodeString& source,
 144                     Formattable& result,
 145                     UErrorCode& status) const
 146 {
 147     if (U_FAILURE(status)) return;
 148
 149     ParsePosition parsePosition(0);
 150     parseObject(source, result, parsePosition);
 151     if (parsePosition.getIndex() == 0) {
 152         status = U_INVALID_FORMAT_ERROR;
 153     }
 154 }
 155
 156 // -------------------------------------
 157
 158 UBool
 159 Format::operator==(const Format& that) const
 160 {
 161     // Subclasses: Call this method and then add more specific checks.
 162     return typeid(*this) == typeid(that);
 163 }
 164 //---------------------------------------
 165
 166 /**
 167  * Simple function for initializing a UParseError from a UnicodeString.
 168  *
 169  * @param pattern The pattern to copy into the parseError
 170  * @param pos The position in pattern where the error occured
 171  * @param parseError The UParseError object to fill in
 172  * @draft ICU 2.4
 173  */
 174 void Format::syntaxError(const UnicodeString& pattern,
 175                          int32_t pos,
 176                          UParseError& parseError) {
 177     parseError.offset = pos;
 178     parseError.line=0;  // we are not using line number
 179
 180     // for pre-context
 181     int32_t start = (pos < U_PARSE_CONTEXT_LEN)? 0 : (pos - (U_PARSE_CONTEXT_LEN-1
 182                                                              /* subtract 1 so that we have room for null*/));
 183     int32_t stop  = pos;
 184     pattern.extract(start,stop-start,parseError.preContext,0);
 185     //null terminate the buffer
 186     parseError.preContext[stop-start] = 0;
 187
 188     //for post-context
 189     start = pos+1;
 190     stop  = ((pos+U_PARSE_CONTEXT_LEN)<=pattern.length()) ? (pos+(U_PARSE_CONTEXT_LEN-1)) :
 191         pattern.length();
 192     pattern.extract(start,stop-start,parseError.postContext,0);
 193     //null terminate the buffer
 194     parseError.postContext[stop-start]= 0;
 195 }
 196
 197 Locale
 198 Format::getLocale(ULocDataLocaleType type, UErrorCode& status) const {
 199     U_LOCALE_BASED(locBased, *this);
 200     return locBased.getLocale(type, status);
 201 }
 202
 203 const char *
 204 Format::getLocaleID(ULocDataLocaleType type, UErrorCode& status) const {
 205     U_LOCALE_BASED(locBased, *this);
 206     return locBased.getLocaleID(type, status);
 207 }
 208
 209 void
 210 Format::setLocaleIDs(const char* valid, const char* actual) {
 211     U_LOCALE_BASED(locBased, *this);
 212     locBased.setLocaleIDs(valid, actual);
 213 }
 214
 215 U_NAMESPACE_END
 216
 217 #endif /* #if !UCONFIG_NO_FORMATTING */
 218
 219 //eof