722 lines
20 KiB
C++
722 lines
20 KiB
C++
/*
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*******************************************************************************
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* Copyright (C) 1997-1999, International Business Machines Corporation and *
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* others. All Rights Reserved. *
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*******************************************************************************
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*
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* File NUMFMT.CPP
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*
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* Modification History:
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*
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* Date Name Description
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* 02/19/97 aliu Converted from java.
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* 03/18/97 clhuang Implemented with C++ APIs.
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* 04/17/97 aliu Enlarged MAX_INTEGER_DIGITS to fully accomodate the
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* largest double, by default.
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* Changed DigitCount to int per code review.
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* 07/20/98 stephen Changed operator== to check for grouping
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* Changed setMaxIntegerDigits per Java implementation.
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* Changed setMinIntegerDigits per Java implementation.
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* Changed setMinFractionDigits per Java implementation.
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* Changed setMaxFractionDigits per Java implementation.
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********************************************************************************
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*/
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "unicode/numfmt.h"
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#include "unicode/locid.h"
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#include "unicode/resbund.h"
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#include "unicode/dcfmtsym.h"
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#include "unicode/decimfmt.h"
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#include "unicode/ustring.h"
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#include "uhash.h"
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#include "iculserv.h"
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#include "ucln_in.h"
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#include <float.h>
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// If no number pattern can be located for a locale, this is the last
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// resort.
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static const UChar gLastResortDecimalPat[] = {
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0x23, 0x30, 0x2E, 0x23, 0x23, 0x23, 0x3B, 0x2D, 0x23, 0x30, 0x2E, 0x23, 0x23, 0x23, 0 /* "#0.###;-#0.###" */
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};
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static const UChar gLastResortCurrencyPat[] = {
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0x24, 0x23, 0x30, 0x2E, 0x30, 0x30, 0x3B, 0x28, 0x24, 0x23, 0x30, 0x2E, 0x30, 0x30, 0x29, 0 /* "$#0.00;($#0.00)" */
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};
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static const UChar gLastResortPercentPat[] = {
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0x23, 0x30, 0x25, 0 /* "#0%" */
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};
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static const UChar gLastResortScientificPat[] = {
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0x23, 0x45, 0x30, 0 /* "#E0" */
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};
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// *****************************************************************************
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// class NumberFormat
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// *****************************************************************************
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U_NAMESPACE_BEGIN
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const char NumberFormat::fgClassID = 0; // Value is irrelevant
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// If the maximum base 10 exponent were 4, then the largest number would
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// be 99,999 which has 5 digits.
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const int32_t NumberFormat::fgMaxIntegerDigits = DBL_MAX_10_EXP + 1; // Should be ~40 ? --srl
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const int32_t NumberFormat::fgMinIntegerDigits = 127;
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const int32_t NumberFormat::fgNumberPatternsCount = 3;
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const UChar * const NumberFormat::fgLastResortNumberPatterns[] =
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{
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gLastResortDecimalPat,
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gLastResortCurrencyPat,
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gLastResortPercentPat,
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gLastResortScientificPat
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};
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// -------------------------------------
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// default constructor
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NumberFormat::NumberFormat()
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: fGroupingUsed(TRUE),
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fMaxIntegerDigits(fgMaxIntegerDigits),
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fMinIntegerDigits(1),
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fMaxFractionDigits(3), // invariant, >= minFractionDigits
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fMinFractionDigits(0),
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fParseIntegerOnly(FALSE)
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{
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}
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// -------------------------------------
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NumberFormat::~NumberFormat()
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{
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}
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// -------------------------------------
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// copy constructor
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NumberFormat::NumberFormat(const NumberFormat &source)
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: Format(source)
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{
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*this = source;
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}
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// -------------------------------------
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// assignment operator
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NumberFormat&
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NumberFormat::operator=(const NumberFormat& rhs)
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{
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if (this != &rhs)
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{
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fGroupingUsed = rhs.fGroupingUsed;
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fMaxIntegerDigits = rhs.fMaxIntegerDigits;
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fMinIntegerDigits = rhs.fMinIntegerDigits;
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fMaxFractionDigits = rhs.fMaxFractionDigits;
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fMinFractionDigits = rhs.fMinFractionDigits;
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fParseIntegerOnly = rhs.fParseIntegerOnly;
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}
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return *this;
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}
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// -------------------------------------
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UBool
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NumberFormat::operator==(const Format& that) const
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{
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NumberFormat* other = (NumberFormat*)&that;
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return ((this == &that) ||
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((Format::operator==(that) &&
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getDynamicClassID()== that.getDynamicClassID() &&
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fMaxIntegerDigits == other->fMaxIntegerDigits &&
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fMinIntegerDigits == other->fMinIntegerDigits &&
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fMaxFractionDigits == other->fMaxFractionDigits &&
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fMinFractionDigits == other->fMinFractionDigits &&
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fGroupingUsed == other->fGroupingUsed &&
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fParseIntegerOnly == other->fParseIntegerOnly)));
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}
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// -------------------------------------
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// Formats the number object and save the format
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// result in the toAppendTo string buffer.
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UnicodeString&
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NumberFormat::format(const Formattable& obj,
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UnicodeString& appendTo,
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FieldPosition& pos,
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UErrorCode& status) const
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{
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if (U_FAILURE(status)) return appendTo;
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if (obj.getType() == Formattable::kDouble) {
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return format(obj.getDouble(), appendTo, pos);
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}
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else if (obj.getType() == Formattable::kLong) {
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return format(obj.getLong(), appendTo, pos);
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}
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// can't try to format a non-numeric object
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else {
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status = U_INVALID_FORMAT_ERROR;
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return appendTo;
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}
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}
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// -------------------------------------
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// Parses the string and save the result object as well
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// as the final parsed position.
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void
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NumberFormat::parseObject(const UnicodeString& source,
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Formattable& result,
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ParsePosition& parse_pos) const
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{
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parse(source, result, parse_pos);
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}
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// -------------------------------------
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// Formats a double number and save the result in a string.
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UnicodeString&
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NumberFormat::format(double number, UnicodeString& appendTo) const
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{
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FieldPosition pos(0);
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return format(number, appendTo, pos);
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}
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// -------------------------------------
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// Formats a long number and save the result in a string.
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UnicodeString&
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NumberFormat::format(int32_t number, UnicodeString& appendTo) const
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{
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FieldPosition pos(0);
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return format(number, appendTo, pos);
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}
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// -------------------------------------
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// Parses the text and save the result object. If the returned
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// parse position is 0, that means the parsing failed, the status
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// code needs to be set to failure. Ignores the returned parse
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// position, otherwise.
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void
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NumberFormat::parse(const UnicodeString& text,
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Formattable& result,
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UErrorCode& status) const
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{
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if (U_FAILURE(status)) return;
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ParsePosition parsePosition(0);
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parse(text, result, parsePosition);
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if (parsePosition.getIndex() == 0) {
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status = U_INVALID_FORMAT_ERROR;
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}
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}
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// -------------------------------------
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// Sets to only parse integers.
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void
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NumberFormat::setParseIntegerOnly(UBool value)
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{
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fParseIntegerOnly = value;
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}
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// -------------------------------------
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// Create a number style NumberFormat instance with the default locale.
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NumberFormat*
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NumberFormat::createInstance(UErrorCode& status)
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{
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return createInstance(Locale::getDefault(), kNumberStyle, status);
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}
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// -------------------------------------
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// Create a number style NumberFormat instance with the inLocale locale.
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NumberFormat*
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NumberFormat::createInstance(const Locale& inLocale, UErrorCode& status)
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{
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return createInstance(inLocale, kNumberStyle, status);
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}
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// -------------------------------------
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// Create a currency style NumberFormat instance with the default locale.
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NumberFormat*
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NumberFormat::createCurrencyInstance(UErrorCode& status)
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{
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return createInstance(Locale::getDefault(), kCurrencyStyle, status);
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}
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// -------------------------------------
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// Create a currency style NumberFormat instance with the inLocale locale.
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NumberFormat*
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NumberFormat::createCurrencyInstance(const Locale& inLocale, UErrorCode& status)
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{
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return createInstance(inLocale, kCurrencyStyle, status);
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}
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// -------------------------------------
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// Create a percent style NumberFormat instance with the default locale.
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NumberFormat*
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NumberFormat::createPercentInstance(UErrorCode& status)
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{
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return createInstance(Locale::getDefault(), kPercentStyle, status);
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}
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// -------------------------------------
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// Create a percent style NumberFormat instance with the inLocale locale.
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NumberFormat*
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NumberFormat::createPercentInstance(const Locale& inLocale, UErrorCode& status)
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{
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return createInstance(inLocale, kPercentStyle, status);
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}
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// -------------------------------------
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// Create a scientific style NumberFormat instance with the default locale.
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NumberFormat*
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NumberFormat::createScientificInstance(UErrorCode& status)
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{
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return createInstance(Locale::getDefault(), kScientificStyle, status);
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}
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// -------------------------------------
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// Create a scientific style NumberFormat instance with the inLocale locale.
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NumberFormat*
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NumberFormat::createScientificInstance(const Locale& inLocale, UErrorCode& status)
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{
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return createInstance(inLocale, kScientificStyle, status);
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}
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// -------------------------------------
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const Locale*
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NumberFormat::getAvailableLocales(int32_t& count)
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{
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return Locale::getAvailableLocales(count);
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}
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// ------------------------------------------
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//
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// Registration
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//
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//-------------------------------------------
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static ICULocaleService* gService = NULL;
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// -------------------------------------
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class ICUNumberFormatFactory : public ICUResourceBundleFactory {
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protected:
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virtual UObject* handleCreate(const Locale& loc, int32_t kind, const ICUService* service, UErrorCode& status) const {
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// !!! kind is not an EStyles, need to determine how to handle this
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return NumberFormat::makeInstance(loc, (NumberFormat::EStyles)kind, status);
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}
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};
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// -------------------------------------
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class NFFactory : public LocaleKeyFactory {
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private:
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NumberFormatFactory* _delegate;
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Hashtable* _ids;
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public:
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NFFactory(NumberFormatFactory* delegate)
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: LocaleKeyFactory(delegate->visible() ? VISIBLE : INVISIBLE)
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, _delegate(delegate)
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, _ids(NULL)
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{
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}
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virtual ~NFFactory()
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{
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delete _delegate;
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delete _ids;
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}
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virtual UObject* create(const ICUServiceKey& key, const ICUService* service, UErrorCode& status) const
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{
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if (handlesKey(key, status)) {
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const LocaleKey& lkey = (const LocaleKey&)key;
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Locale loc;
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lkey.canonicalLocale(loc);
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int32_t kind = lkey.kind();
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UObject* result = _delegate->createFormat(loc, (UNumberFormatStyle)(kind+1));
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if (result == NULL) {
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result = service->getKey((ICUServiceKey&)key /* cast away const */, NULL, this, status);
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}
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return result;
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}
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return NULL;
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}
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protected:
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/**
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* Return the set of ids that this factory supports (visible or
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* otherwise). This can be called often and might need to be
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* cached if it is expensive to create.
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*/
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virtual const Hashtable* getSupportedIDs(UErrorCode& status) const
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{
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if (U_SUCCESS(status)) {
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if (!_ids) {
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int32_t count = 0;
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const UnicodeString * const idlist = _delegate->getSupportedIDs(count, status);
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((NFFactory*)this)->_ids = new Hashtable(status); /* cast away const */
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if (_ids) {
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for (int i = 0; i < count; ++i) {
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_ids->put(idlist[i], (void*)this, status);
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}
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}
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}
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return _ids;
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}
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return NULL;
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}
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};
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class ICUNumberFormatService : public ICULocaleService {
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public:
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ICUNumberFormatService()
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: ICULocaleService("Number Format")
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{
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UErrorCode status = U_ZERO_ERROR;
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registerFactory(new ICUNumberFormatFactory(), status);
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}
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virtual UObject* cloneInstance(UObject* instance) const {
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return ((NumberFormat*)instance)->clone();
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}
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virtual UObject* handleDefault(const ICUServiceKey& key, UnicodeString* actualID, UErrorCode& status) const {
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LocaleKey& lkey = (LocaleKey&)key;
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int32_t kind = lkey.kind();
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Locale loc;
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lkey.currentLocale(loc);
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return NumberFormat::makeInstance(loc, (NumberFormat::EStyles)kind, status);
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}
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virtual UBool isDefault() const {
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return countFactories() == 1;
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}
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};
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// -------------------------------------
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static UMTX gnLock = 0;
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static ICULocaleService*
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getService(void)
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{
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UBool needInit;
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{
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Mutex mutex(&gnLock);
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needInit = (UBool)(gService == NULL);
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}
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if (needInit) {
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ICULocaleService * newservice = new ICUNumberFormatService();
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if (newservice) {
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Mutex mutex(&gnLock);
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if (gService == NULL) {
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gService = newservice;
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newservice = NULL;
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}
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}
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if (newservice) {
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delete newservice;
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}
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ucln_i18n_registerCleanup();
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}
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return gService;
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}
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// -------------------------------------
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NumberFormat*
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NumberFormat::createInstance(const Locale& loc, EStyles kind, UErrorCode& status)
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{
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if (gService != NULL) {
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return (NumberFormat*)gService->get(loc, kind, status);
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} else {
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return makeInstance(loc, kind, status);
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}
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}
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// -------------------------------------
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URegistryKey
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NumberFormat::registerFactory(NumberFormatFactory* toAdopt, UErrorCode& status)
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{
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return getService()->registerFactory(new NFFactory(toAdopt), status);
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}
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// -------------------------------------
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UBool
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NumberFormat::unregister(URegistryKey key, UErrorCode& status)
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{
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if (U_SUCCESS(status)) {
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if (gService != NULL) {
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return gService->unregister(key, status);
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}
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status = U_ILLEGAL_ARGUMENT_ERROR;
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}
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return FALSE;
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}
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// -------------------------------------
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StringEnumeration*
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NumberFormat::getAvailableLocales(void)
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{
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return getService()->getAvailableLocales();
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}
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// -------------------------------------
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// Checks if the thousand/10 thousand grouping is used in the
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// NumberFormat instance.
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UBool
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NumberFormat::isGroupingUsed() const
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{
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return fGroupingUsed;
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}
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// -------------------------------------
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// Sets to use the thousand/10 thousand grouping in the
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// NumberFormat instance.
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void
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NumberFormat::setGroupingUsed(UBool newValue)
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{
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fGroupingUsed = newValue;
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}
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// -------------------------------------
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// Gets the maximum number of digits for the integral part for
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// this NumberFormat instance.
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int32_t NumberFormat::getMaximumIntegerDigits() const
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{
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return fMaxIntegerDigits;
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}
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// -------------------------------------
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// Sets the maximum number of digits for the integral part for
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// this NumberFormat instance.
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void
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NumberFormat::setMaximumIntegerDigits(int32_t newValue)
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{
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fMaxIntegerDigits = uprv_max(0, uprv_min(newValue, fgMaxIntegerDigits));
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if(fMinIntegerDigits > fMaxIntegerDigits)
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fMinIntegerDigits = fMaxIntegerDigits;
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}
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// -------------------------------------
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// Gets the minimum number of digits for the integral part for
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// this NumberFormat instance.
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int32_t
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NumberFormat::getMinimumIntegerDigits() const
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{
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return fMinIntegerDigits;
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}
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// -------------------------------------
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// Sets the minimum number of digits for the integral part for
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// this NumberFormat instance.
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void
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NumberFormat::setMinimumIntegerDigits(int32_t newValue)
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{
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fMinIntegerDigits = uprv_max(0, uprv_min(newValue, fgMinIntegerDigits));
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if(fMinIntegerDigits > fMaxIntegerDigits)
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fMaxIntegerDigits = fMinIntegerDigits;
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}
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// -------------------------------------
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// Gets the maximum number of digits for the fractional part for
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// this NumberFormat instance.
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int32_t
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NumberFormat::getMaximumFractionDigits() const
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{
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return fMaxFractionDigits;
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}
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// -------------------------------------
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// Sets the maximum number of digits for the fractional part for
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// this NumberFormat instance.
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void
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NumberFormat::setMaximumFractionDigits(int32_t newValue)
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{
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fMaxFractionDigits = uprv_max(0, uprv_min(newValue, fgMaxIntegerDigits));
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if(fMaxFractionDigits < fMinFractionDigits)
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fMinFractionDigits = fMaxFractionDigits;
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}
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// -------------------------------------
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// Gets the minimum number of digits for the fractional part for
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// this NumberFormat instance.
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int32_t
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NumberFormat::getMinimumFractionDigits() const
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{
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return fMinFractionDigits;
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}
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// -------------------------------------
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// Sets the minimum number of digits for the fractional part for
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// this NumberFormat instance.
|
|
|
|
void
|
|
NumberFormat::setMinimumFractionDigits(int32_t newValue)
|
|
{
|
|
fMinFractionDigits = uprv_max(0, uprv_min(newValue, fgMinIntegerDigits));
|
|
if (fMaxFractionDigits < fMinFractionDigits)
|
|
fMaxFractionDigits = fMinFractionDigits;
|
|
}
|
|
|
|
// -------------------------------------
|
|
|
|
void NumberFormat::setCurrency(const UChar* theCurrency) {
|
|
if (theCurrency) {
|
|
u_strncpy(currency, theCurrency, 3);
|
|
currency[3] = 0;
|
|
} else {
|
|
currency[0] = 0;
|
|
}
|
|
}
|
|
|
|
const UChar* NumberFormat::getCurrency() const {
|
|
return currency;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Creates the NumberFormat instance of the specified style (number, currency,
|
|
// or percent) for the desired locale.
|
|
|
|
NumberFormat*
|
|
NumberFormat::makeInstance(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((char *)0, desiredLocale, status);
|
|
NumberFormat* f;
|
|
|
|
if (U_FAILURE(status))
|
|
{
|
|
// We don't appear to have resource data available -- use the last-resort data
|
|
status = U_USING_FALLBACK_WARNING;
|
|
|
|
// Use the DecimalFormatSymbols constructor which uses last-resort data
|
|
DecimalFormatSymbols* symbolsToAdopt = new DecimalFormatSymbols(status);
|
|
if (symbolsToAdopt == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
return NULL;
|
|
}
|
|
if (U_FAILURE(status)) {
|
|
delete symbolsToAdopt; // This should never happen
|
|
return NULL;
|
|
}
|
|
|
|
// Creates a DecimalFormat instance with the last resort number patterns.
|
|
f = new DecimalFormat(fgLastResortNumberPatterns[style], symbolsToAdopt, status);
|
|
if (f == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
return NULL;
|
|
}
|
|
if (U_FAILURE(status)) {
|
|
delete f;
|
|
f = NULL;
|
|
}
|
|
return f;
|
|
}
|
|
|
|
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;
|
|
|
|
// Loads the decimal symbols of the desired locale.
|
|
DecimalFormatSymbols* symbolsToAdopt = new DecimalFormatSymbols(desiredLocale, status);
|
|
if (symbolsToAdopt == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
return NULL;
|
|
}
|
|
if (U_FAILURE(status)) {
|
|
delete symbolsToAdopt;
|
|
return NULL;
|
|
}
|
|
|
|
// Creates the specified decimal format style of the desired locale.
|
|
if (style < numberPatterns.getSize()) {
|
|
const UnicodeString pattern(numberPatterns.getStringEx(style, status));
|
|
if (U_SUCCESS(status)) {
|
|
f = new DecimalFormat(pattern, symbolsToAdopt, status);
|
|
}
|
|
else {
|
|
return NULL;
|
|
}
|
|
}
|
|
else {
|
|
// 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.
|
|
f = new DecimalFormat(fgLastResortNumberPatterns[style], symbolsToAdopt, status);
|
|
}
|
|
|
|
if (f == NULL) {
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
return NULL;
|
|
}
|
|
if (U_FAILURE(status)) {
|
|
delete f;
|
|
f = NULL;
|
|
}
|
|
return f;
|
|
}
|
|
|
|
U_NAMESPACE_END
|
|
|
|
// defined in ucln_cmn.h
|
|
|
|
/**
|
|
* Release all static memory held by numberformat.
|
|
*/
|
|
U_CFUNC UBool numfmt_cleanup(void) {
|
|
if (gService) {
|
|
delete gService;
|
|
gService = NULL;
|
|
}
|
|
umtx_destroy(&gnLock);
|
|
return TRUE;
|
|
}
|
|
|
|
#endif /* #if !UCONFIG_NO_FORMATTING */
|
|
|
|
//eof
|