/* ********************************************************************** * Copyright (c) 2002-2004, International Business Machines * Corporation and others. All Rights Reserved. ********************************************************************** */ #ifndef _UCURR_H_ #define _UCURR_H_ #include "unicode/utypes.h" #if !UCONFIG_NO_FORMATTING /** * The ucurr API encapsulates information about a currency, as defined by * ISO 4217. A currency is represented by a 3-character string * containing its ISO 4217 code. This API can return various data * necessary the proper display of a currency: * * <ul><li>A display symbol, for a specific locale * <li>The number of fraction digits to display * <li>A rounding increment * </ul> * * The <tt>DecimalFormat</tt> class uses these data to display * currencies. * @author Alan Liu * @since ICU 2.2 */ /** * Finds a currency code for the given locale. * @param locale the locale for which to retrieve a currency code. * Currency can be specified by the "currency" keyword * in which case it overrides the default currency code * @param buff fill in buffer. Can be NULL for preflighting. * @param buffCapacity capacity of the fill in buffer. Can be 0 for * preflighting. If it is non-zero, the buff parameter * must not be NULL. * @param ec error code * @return length of the currency string. It should always be 3. If 0, * currency couldn't be found or the input values are * invalid. * @draft ICU 2.8 */ U_DRAFT int32_t U_EXPORT2 ucurr_forLocale(const char* locale, UChar* buff, int32_t buffCapacity, UErrorCode* ec); /** * Selector constants for ucurr_getName(). * * @see ucurr_getName * @stable ICU 2.6 */ typedef enum UCurrNameStyle { /** * Selector for ucurr_getName indicating a symbolic name for a * currency, such as "$" for USD. * @stable ICU 2.6 */ UCURR_SYMBOL_NAME, /** * Selector for ucurr_getName indicating the long name for a * currency, such as "US Dollar" for USD. * @stable ICU 2.6 */ UCURR_LONG_NAME } UCurrNameStyle; #if !UCONFIG_NO_SERVICE /** * @internal */ typedef const void* UCurrRegistryKey; /** * Register an (existing) ISO 4217 currency code for the given locale. * Only the country code and the two variants EURO and PRE_EURO are * recognized. * @param isoCode the three-letter ISO 4217 currency code * @param locale the locale for which to register this currency code * @param status the in/out status code * @return a registry key that can be used to unregister this currency code, or NULL * if there was an error. * @stable ICU 2.6 */ U_STABLE UCurrRegistryKey U_EXPORT2 ucurr_register(const UChar* isoCode, const char* locale, UErrorCode* status); /** * Unregister the previously-registered currency definitions using the * URegistryKey returned from ucurr_register. Key becomes invalid after * a successful call and should not be used again. Any currency * that might have been hidden by the original ucurr_register call is * restored. * @param key the registry key returned by a previous call to ucurr_register * @param status the in/out status code, no special meanings are assigned * @return TRUE if the currency for this key was successfully unregistered * @stable ICU 2.6 */ U_STABLE UBool U_EXPORT2 ucurr_unregister(UCurrRegistryKey key, UErrorCode* status); #endif /* UCONFIG_NO_SERVICE */ /** * Returns the display name for the given currency in the * given locale. For example, the display name for the USD * currency object in the en_US locale is "$". * @param currency null-terminated 3-letter ISO 4217 code * @param locale locale in which to display currency * @param nameStyle selector for which kind of name to return * @param isChoiceFormat fill-in set to TRUE if the returned value * is a ChoiceFormat pattern; otherwise it is a static string * @param len fill-in parameter to receive length of result * @param ec error code * @return pointer to display string of 'len' UChars. If the resource * data contains no entry for 'currency', then 'currency' itself is * returned. If *isChoiceFormat is TRUE, then the result is a * ChoiceFormat pattern. Otherwise it is a static string. * @stable ICU 2.6 */ U_STABLE const UChar* U_EXPORT2 ucurr_getName(const UChar* currency, const char* locale, UCurrNameStyle nameStyle, UBool* isChoiceFormat, int32_t* len, UErrorCode* ec); /** * Returns the number of the number of fraction digits that should * be displayed for the given currency. * @param currency null-terminated 3-letter ISO 4217 code * @param ec input-output error code * @return a non-negative number of fraction digits to be * displayed, or 0 if there is an error * @draft ICU 3.0 */ U_DRAFT int32_t U_EXPORT2 ucurr_getDefaultFractionDigits(const UChar* currency, UErrorCode* ec); /** * Returns the rounding increment for the given currency, or 0.0 if no * rounding is done by the currency. * @param currency null-terminated 3-letter ISO 4217 code * @param ec input-output error code * @return the non-negative rounding increment, or 0.0 if none, * or 0.0 if there is an error * @draft ICU 3.0 */ U_DRAFT double U_EXPORT2 ucurr_getRoundingIncrement(const UChar* currency, UErrorCode* ec); #ifdef XP_CPLUSPLUS #include "unicode/unistr.h" #include "unicode/parsepos.h" U_NAMESPACE_BEGIN /** * Attempt to parse the given string as a currency, either as a * display name in the given locale, or as a 3-letter ISO 4217 * code. If multiple display names match, then the longest one is * selected. If both a display name and a 3-letter ISO code * match, then the display name is preferred, unless it's length * is less than 3. * * @param locale the locale of the display names to match * @param text the text to parse * @param pos input-output position; on input, the position within * text to match; must have 0 <= pos.getIndex() < text.length(); * on output, the position after the last matched character. If * the parse fails, the position in unchanged upon output. * @return the ISO 4217 code, as a string, of the best match, or * null if there is no match * * @internal */ void uprv_parseCurrency(const char* locale, const UnicodeString& text, ParsePosition& pos, UChar* result, UErrorCode& ec); U_NAMESPACE_END #endif #endif /* #if !UCONFIG_NO_FORMATTING */ #endif