457 lines
14 KiB
C++
457 lines
14 KiB
C++
/*
|
|
*******************************************************************************
|
|
* Copyright (C) 1997-1999, International Business Machines Corporation and *
|
|
* others. All Rights Reserved. *
|
|
*******************************************************************************
|
|
*
|
|
* File NUMFMT.CPP
|
|
*
|
|
* Modification History:
|
|
*
|
|
* Date Name Description
|
|
* 02/19/97 aliu Converted from java.
|
|
* 03/18/97 clhuang Implemented with C++ APIs.
|
|
* 04/17/97 aliu Enlarged MAX_INTEGER_DIGITS to fully accomodate the
|
|
* largest double, by default.
|
|
* Changed DigitCount to int per code review.
|
|
* 07/20/98 stephen Changed operator== to check for grouping
|
|
* Changed setMaxIntegerDigits per Java implementation.
|
|
* Changed setMinIntegerDigits per Java implementation.
|
|
* Changed setMinFractionDigits per Java implementation.
|
|
* Changed setMaxFractionDigits per Java implementation.
|
|
********************************************************************************
|
|
*/
|
|
|
|
#include "unicode/numfmt.h"
|
|
#include "unicode/locid.h"
|
|
#include "unicode/resbund.h"
|
|
#include "unicode/dcfmtsym.h"
|
|
#include "unicode/decimfmt.h"
|
|
#include <float.h>
|
|
|
|
// *****************************************************************************
|
|
// class NumberFormat
|
|
// *****************************************************************************
|
|
|
|
char NumberFormat::fgClassID = 0; // Value is irrelevant
|
|
|
|
// If the maximum base 10 exponent were 4, then the largest number would
|
|
// be 99,999 which has 5 digits.
|
|
const int32_t NumberFormat::fgMaxIntegerDigits = DBL_MAX_10_EXP + 1; // Should be ~40 ? --srl
|
|
const int32_t NumberFormat::fgMinIntegerDigits = 127;
|
|
|
|
const int32_t NumberFormat::fgNumberPatternsCount = 3;
|
|
|
|
// If no number pattern can be located for a locale, this is the last
|
|
// resort.
|
|
const UnicodeString NumberFormat::fgLastResortNumberPatterns[] =
|
|
{
|
|
UNICODE_STRING("#0.###;-#0.###", 14), // decimal pattern
|
|
UNICODE_STRING("$#0.00;($#0.00)", 15), // currency pattern
|
|
UNICODE_STRING("#0%", 3), // percent pattern
|
|
UNICODE_STRING("#E0", 3) // scientific pattern
|
|
};
|
|
|
|
// -------------------------------------
|
|
// default constructor
|
|
|
|
NumberFormat::NumberFormat()
|
|
: fGroupingUsed(TRUE),
|
|
fMaxIntegerDigits(fgMaxIntegerDigits),
|
|
fMinIntegerDigits(1),
|
|
fMaxFractionDigits(3), // invariant, >= minFractionDigits
|
|
fMinFractionDigits(0),
|
|
fParseIntegerOnly(FALSE)
|
|
{
|
|
}
|
|
|
|
// -------------------------------------
|
|
|
|
NumberFormat::~NumberFormat()
|
|
{
|
|
}
|
|
|
|
// -------------------------------------
|
|
// copy constructor
|
|
|
|
NumberFormat::NumberFormat(const NumberFormat &source)
|
|
{
|
|
*this = source;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// assignment operator
|
|
|
|
NumberFormat&
|
|
NumberFormat::operator=(const NumberFormat& rhs)
|
|
{
|
|
if (this != &rhs)
|
|
{
|
|
fGroupingUsed = rhs.fGroupingUsed;
|
|
fMaxIntegerDigits = rhs.fMaxIntegerDigits;
|
|
fMinIntegerDigits = rhs.fMinIntegerDigits;
|
|
fMaxFractionDigits = rhs.fMaxFractionDigits;
|
|
fMinFractionDigits = rhs.fMinFractionDigits;
|
|
fParseIntegerOnly = rhs.fParseIntegerOnly;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
// -------------------------------------
|
|
|
|
UBool
|
|
NumberFormat::operator==(const Format& that) const
|
|
{
|
|
NumberFormat* other = (NumberFormat*)&that;
|
|
|
|
return ((this == &that) ||
|
|
((Format::operator==(that) &&
|
|
getDynamicClassID()== that.getDynamicClassID() &&
|
|
fMaxIntegerDigits == other->fMaxIntegerDigits &&
|
|
fMinIntegerDigits == other->fMinIntegerDigits &&
|
|
fMaxFractionDigits == other->fMaxFractionDigits &&
|
|
fMinFractionDigits == other->fMinFractionDigits &&
|
|
fGroupingUsed == other->fGroupingUsed &&
|
|
fParseIntegerOnly == other->fParseIntegerOnly)));
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Formats the number object and save the format
|
|
// result in the toAppendTo string buffer.
|
|
|
|
UnicodeString&
|
|
NumberFormat::format(const Formattable& obj,
|
|
UnicodeString& toAppendTo,
|
|
FieldPosition& pos,
|
|
UErrorCode& status) const
|
|
{
|
|
if (U_FAILURE(status)) return toAppendTo;
|
|
|
|
if (obj.getType() == Formattable::kDouble) {
|
|
return format(obj.getDouble(), toAppendTo, pos);
|
|
}
|
|
else if (obj.getType() == Formattable::kLong) {
|
|
return format(obj.getLong(), toAppendTo, pos);
|
|
}
|
|
// can't try to format a non-numeric object
|
|
else {
|
|
status = U_INVALID_FORMAT_ERROR;
|
|
return toAppendTo;
|
|
}
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Parses the string and save the result object as well
|
|
// as the final parsed position.
|
|
|
|
void
|
|
NumberFormat::parseObject(const UnicodeString& source,
|
|
Formattable& result,
|
|
ParsePosition& parse_pos) const
|
|
{
|
|
parse(source, result, parse_pos);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Formats a double number and save the result in a string.
|
|
|
|
UnicodeString&
|
|
NumberFormat::format(double number, UnicodeString& toAppendTo) const
|
|
{
|
|
FieldPosition pos(0);
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
return format(Formattable(number), toAppendTo, pos, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Formats a long number and save the result in a string.
|
|
|
|
UnicodeString&
|
|
NumberFormat::format(int32_t number, UnicodeString& toAppendTo) const
|
|
{
|
|
FieldPosition pos(0);
|
|
UErrorCode status = U_ZERO_ERROR;
|
|
return format(Formattable(number), toAppendTo, pos, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Parses the text and save the result object. If the returned
|
|
// parse position is 0, that means the parsing failed, the status
|
|
// code needs to be set to failure. Ignores the returned parse
|
|
// position, otherwise.
|
|
|
|
void
|
|
NumberFormat::parse(const UnicodeString& text,
|
|
Formattable& result,
|
|
UErrorCode& status) const
|
|
{
|
|
if (U_FAILURE(status)) return;
|
|
|
|
ParsePosition parsePosition(0);
|
|
parse(text, result, parsePosition);
|
|
if (parsePosition.getIndex() == 0) {
|
|
status = U_INVALID_FORMAT_ERROR;
|
|
}
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Sets to only parse integers.
|
|
|
|
void
|
|
NumberFormat::setParseIntegerOnly(UBool value)
|
|
{
|
|
fParseIntegerOnly = value;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Create a number style NumberFormat instance with the default locale.
|
|
|
|
NumberFormat*
|
|
NumberFormat::createInstance(UErrorCode& status)
|
|
{
|
|
return createInstance(Locale::getDefault(), kNumberStyle, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Create a number style NumberFormat instance with the inLocale locale.
|
|
|
|
NumberFormat*
|
|
NumberFormat::createInstance(const Locale& inLocale, UErrorCode& status)
|
|
{
|
|
return createInstance(inLocale, kNumberStyle, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Create a currency style NumberFormat instance with the default locale.
|
|
|
|
NumberFormat*
|
|
NumberFormat::createCurrencyInstance(UErrorCode& status)
|
|
{
|
|
return createInstance(Locale::getDefault(), kCurrencyStyle, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Create a currency style NumberFormat instance with the inLocale locale.
|
|
|
|
NumberFormat*
|
|
NumberFormat::createCurrencyInstance(const Locale& inLocale, UErrorCode& status)
|
|
{
|
|
return createInstance(inLocale, kCurrencyStyle, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Create a percent style NumberFormat instance with the default locale.
|
|
|
|
NumberFormat*
|
|
NumberFormat::createPercentInstance(UErrorCode& status)
|
|
{
|
|
return createInstance(Locale::getDefault(), kPercentStyle, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Create a percent style NumberFormat instance with the inLocale locale.
|
|
|
|
NumberFormat*
|
|
NumberFormat::createPercentInstance(const Locale& inLocale, UErrorCode& status)
|
|
{
|
|
return createInstance(inLocale, kPercentStyle, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Create a scientific style NumberFormat instance with the default locale.
|
|
|
|
NumberFormat*
|
|
NumberFormat::createScientificInstance(UErrorCode& status)
|
|
{
|
|
return createInstance(Locale::getDefault(), kScientificStyle, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Create a scientific style NumberFormat instance with the inLocale locale.
|
|
|
|
NumberFormat*
|
|
NumberFormat::createScientificInstance(const Locale& inLocale, UErrorCode& status)
|
|
{
|
|
return createInstance(inLocale, kScientificStyle, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
|
|
const Locale*
|
|
NumberFormat::getAvailableLocales(int32_t& count)
|
|
{
|
|
return Locale::getAvailableLocales(count);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Checks if the thousand/10 thousand grouping is used in the
|
|
// NumberFormat instance.
|
|
|
|
UBool
|
|
NumberFormat::isGroupingUsed() const
|
|
{
|
|
return fGroupingUsed;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Sets to use the thousand/10 thousand grouping in the
|
|
// NumberFormat instance.
|
|
|
|
void
|
|
NumberFormat::setGroupingUsed(UBool newValue)
|
|
{
|
|
fGroupingUsed = newValue;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Gets the maximum number of digits for the integral part for
|
|
// this NumberFormat instance.
|
|
|
|
int32_t NumberFormat::getMaximumIntegerDigits() const
|
|
{
|
|
return fMaxIntegerDigits;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Sets the maximum number of digits for the integral part for
|
|
// this NumberFormat instance.
|
|
|
|
void
|
|
NumberFormat::setMaximumIntegerDigits(int32_t newValue)
|
|
{
|
|
fMaxIntegerDigits = uprv_max(0, uprv_min(newValue, fgMaxIntegerDigits));
|
|
if(fMinIntegerDigits > fMaxIntegerDigits)
|
|
fMinIntegerDigits = fMaxIntegerDigits;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Gets the minimum number of digits for the integral part for
|
|
// this NumberFormat instance.
|
|
|
|
int32_t
|
|
NumberFormat::getMinimumIntegerDigits() const
|
|
{
|
|
return fMinIntegerDigits;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Sets the minimum number of digits for the integral part for
|
|
// this NumberFormat instance.
|
|
|
|
void
|
|
NumberFormat::setMinimumIntegerDigits(int32_t newValue)
|
|
{
|
|
fMinIntegerDigits = uprv_max(0, uprv_min(newValue, fgMinIntegerDigits));
|
|
if(fMinIntegerDigits > fMaxIntegerDigits)
|
|
fMaxIntegerDigits = fMinIntegerDigits;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Gets the maximum number of digits for the fractional part for
|
|
// this NumberFormat instance.
|
|
|
|
int32_t
|
|
NumberFormat::getMaximumFractionDigits() const
|
|
{
|
|
return fMaxFractionDigits;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Sets the maximum number of digits for the fractional part for
|
|
// this NumberFormat instance.
|
|
|
|
void
|
|
NumberFormat::setMaximumFractionDigits(int32_t newValue)
|
|
{
|
|
fMaxFractionDigits = uprv_max(0, uprv_min(newValue, fgMaxIntegerDigits));
|
|
if(fMaxFractionDigits < fMinFractionDigits)
|
|
fMinFractionDigits = fMaxFractionDigits;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Gets the minimum number of digits for the fractional part for
|
|
// this NumberFormat instance.
|
|
|
|
int32_t
|
|
NumberFormat::getMinimumFractionDigits() const
|
|
{
|
|
return fMinFractionDigits;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Sets the minimum number of digits for the fractional part for
|
|
// this NumberFormat instance.
|
|
|
|
void
|
|
NumberFormat::setMinimumFractionDigits(int32_t newValue)
|
|
{
|
|
fMinFractionDigits = uprv_max(0, uprv_min(newValue, fgMinIntegerDigits));
|
|
if (fMaxFractionDigits < fMinFractionDigits)
|
|
fMaxFractionDigits = fMinFractionDigits;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Creates the NumberFormat instance of the specified style (number, currency,
|
|
// or percent) for the desired locale.
|
|
|
|
NumberFormat*
|
|
NumberFormat::createInstance(const Locale& desiredLocale,
|
|
EStyles style,
|
|
UErrorCode& status)
|
|
{
|
|
if (U_FAILURE(status)) return NULL;
|
|
|
|
if (style < 0 || style >= kStyleCount) {
|
|
status = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return NULL;
|
|
}
|
|
|
|
/*ResourceBundle resource(Locale::getDataDirectory(), desiredLocale, status);*/
|
|
ResourceBundle resource(NULL, desiredLocale, status);
|
|
|
|
if (U_FAILURE(status))
|
|
{
|
|
// We don't appear to have resource data available -- use the last-resort data
|
|
status = U_USING_FALLBACK_ERROR;
|
|
|
|
// Use the DecimalFormatSymbols constructor which uses last-resort data
|
|
DecimalFormatSymbols* symbolsToAdopt = new DecimalFormatSymbols(status);
|
|
if (U_FAILURE(status)) { delete symbolsToAdopt; return NULL; } // This should never happen
|
|
|
|
// Creates a DecimalFormat instance with the last resort number patterns.
|
|
NumberFormat* f = new DecimalFormat(fgLastResortNumberPatterns[style], symbolsToAdopt, status);
|
|
if (U_FAILURE(status)) { delete f; f = NULL; }
|
|
return f;
|
|
}
|
|
|
|
//int32_t patternCount=0;
|
|
//const UnicodeString* numberPatterns = resource.getStringArray(DecimalFormat::fgNumberPatterns,
|
|
// patternCount, status);
|
|
|
|
ResourceBundle numberPatterns = resource.get(DecimalFormat::fgNumberPatterns, status);
|
|
// If not all the styled patterns exists for the NumberFormat in this locale,
|
|
// sets the status code to failure and returns nil.
|
|
//if (patternCount < fgNumberPatternsCount) status = U_INVALID_FORMAT_ERROR;
|
|
if (numberPatterns.getSize() < fgNumberPatternsCount) status = U_INVALID_FORMAT_ERROR;
|
|
if (U_FAILURE(status)) return NULL;
|
|
|
|
// If the requested style doesn't exist, use a last-resort style.
|
|
// This is to support scientific styles before we have all the
|
|
// resource data in place.
|
|
//const UnicodeString& pattern = style < patternCount ?
|
|
// numberPatterns[style] : fgLastResortNumberPatterns[style];
|
|
const UnicodeString& pattern = style < numberPatterns.getSize()?
|
|
numberPatterns.getStringEx(style, status) : fgLastResortNumberPatterns[style];
|
|
|
|
// Loads the decimal symbols of the desired locale.
|
|
DecimalFormatSymbols* symbolsToAdopt = new DecimalFormatSymbols(desiredLocale, status);
|
|
if (U_FAILURE(status)) { delete symbolsToAdopt; return NULL; }
|
|
|
|
// Creates the specified decimal format style of the desired locale.
|
|
NumberFormat* f = new DecimalFormat(pattern, symbolsToAdopt, status);
|
|
if (U_FAILURE(status)) { delete f; f = NULL; }
|
|
return f;
|
|
}
|
|
|
|
//eof
|