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- /*
- ********************************************************************************
- * *
- * COPYRIGHT: *
- * (C) Copyright Taligent, Inc., 1997 *
- * (C) Copyright International Business Machines Corporation, 1997-1998 *
- * Licensed Material - Program-Property of IBM - All Rights Reserved. *
- * US Government Users Restricted Rights - Use, duplication, or disclosure *
- * restricted by GSA ADP Schedule Contract with IBM Corp. *
- * *
- ********************************************************************************
- *
- * File DECIMFMT.CPP
- *
- * Modification History:
- *
- * Date Name Description
- * 02/19/97 aliu Converted from java.
- * 03/20/97 clhuang Implemented with new APIs.
- * 03/31/97 aliu Moved isLONG_MIN to DigitList, and fixed it.
- * 04/3/97 aliu Rewrote parsing and formatting completely, and
- * cleaned up and debugged. Actually works now.
- * Implemented NAN and INF handling, for both parsing
- * and formatting. Extensive testing & debugging.
- * 04/10/97 aliu Modified to compile on AIX.
- * 04/16/97 aliu Rewrote to use DigitList, which has been resurrected.
- * Changed DigitCount to int per code review.
- * 07/09/97 helena Made ParsePosition into a class.
- * 08/26/97 aliu Extensive changes to applyPattern; completely
- * rewritten from the Java.
- * 09/09/97 aliu Ported over support for exponential formats.
- * 07/20/98 stephen JDK 1.2 sync up.
- * Various instances of '0' replaced with 'NULL'
- * Check for grouping size in subFormat()
- * Brought subParse() in line with Java 1.2
- * Added method appendAffix()
- * 08/24/1998 srl Removed Mutex calls. This is not a thread safe class!
- * 02/22/99 stephen Removed character literals for EBCDIC safety
- * 06/24/99 helena Integrated Alan's NF enhancements and Java2 bug fixes
- * 06/28/99 stephen Fixed bugs in toPattern().
- * 06/29/99 stephen Fixed operator= to copy fFormatWidth, fPad,
- * fPadPosition
- ********************************************************************************
- */
-
- #include "decimfmt.h"
- #include "digitlst.h"
- #include "dcfmtsym.h"
- #include "resbund.h"
- #include "unicode.h"
- #include "cmemory.h"
- #include <float.h>
- #include <limits.h>
-
- // #define DEBUG
-
- #ifdef DEBUG
- #include <stdio.h>
- static void debugout(UnicodeString s) {
- char buf[2000];
- s.extract((UTextOffset) 0, s.length(), buf);
- buf[s.length()] = 0;
- printf("%s", buf);
- }
- #define debug(x) printf("%s", x);
- #else
- #define debugout(x)
- #define debug(x)
- #endif
-
- // *****************************************************************************
- // class DecimalFormat
- // *****************************************************************************
-
- char DecimalFormat::fgClassID = 0; // Value is irrelevan
-
- // Constants for characters used in programmatic (unlocalized) patterns.
- const UChar DecimalFormat::kPatternZeroDigit = 0x0030 /*'0'*/;
- const UChar DecimalFormat::kPatternGroupingSeparator = 0x002C /*','*/;
- const UChar DecimalFormat::kPatternDecimalSeparator = 0x002E /*'.'*/;
- const UChar DecimalFormat::kPatternPerMill = 0x2030;
- const UChar DecimalFormat::kPatternPercent = 0x0025 /*'%'*/;
- const UChar DecimalFormat::kPatternDigit = 0x0023 /*'#'*/;
- const UChar DecimalFormat::kPatternSeparator = 0x003B /*';'*/;
- const UChar DecimalFormat::kPatternExponent = 0x0045 /*'E'*/;
- const UChar DecimalFormat::kPatternPlus = 0x002B /*'+'*/;
- const UChar DecimalFormat::kPatternMinus = 0x002D /*'-'*/;
- const UChar DecimalFormat::kPatternPadEscape = 0x002A /*'*'*/;
- const UChar DecimalFormat::kCurrencySign = 0x00A4;
- const UChar DecimalFormat::kQuote = 0x0027 /*'\''*/;
-
- const int8_t DecimalFormat::fgMaxDigit = 9;
-
- const int32_t DecimalFormat::kDoubleIntegerDigits = 309;
- const int32_t DecimalFormat::kDoubleFractionDigits = 340;
-
- /**
- * These are the tags we expect to see in normal resource bundle files associated
- * with a locale.
- */
- const UnicodeString DecimalFormat::fgNumberPatterns("NumberPatterns");
-
- //------------------------------------------------------------------------------
- // Constructs a DecimalFormat instance in the default locale.
-
- DecimalFormat::DecimalFormat(UErrorCode& status)
- : NumberFormat(),
- fPosPrefixPattern(0),
- fNegPrefixPattern(0),
- fPosSuffixPattern(0),
- fNegSuffixPattern(0),
- fSymbols(0)
- {
- construct(status);
- }
-
- //------------------------------------------------------------------------------
- // Constructs a DecimalFormat instance with the specified number format
- // pattern in the default locale.
-
- DecimalFormat::DecimalFormat(const UnicodeString& pattern,
- UErrorCode& status)
- : NumberFormat(),
- fPosPrefixPattern(0),
- fNegPrefixPattern(0),
- fPosSuffixPattern(0),
- fNegSuffixPattern(0),
- fSymbols(0)
- {
- construct(status, &pattern);
- }
-
- //------------------------------------------------------------------------------
- // Constructs a DecimalFormat instance with the specified number format
- // pattern and the number format symbols in the default locale. The
- // created instance owns the symbols.
-
- DecimalFormat::DecimalFormat(const UnicodeString& pattern,
- DecimalFormatSymbols* symbolsToAdopt,
- UErrorCode& status)
- : NumberFormat(),
- fPosPrefixPattern(0),
- fNegPrefixPattern(0),
- fPosSuffixPattern(0),
- fNegSuffixPattern(0),
- fSymbols(0)
- {
- if (symbolsToAdopt == NULL) status = U_ILLEGAL_ARGUMENT_ERROR;
- construct(status, &pattern, symbolsToAdopt);
- }
-
- //------------------------------------------------------------------------------
- // Constructs a DecimalFormat instance with the specified number format
- // pattern and the number format symbols in the default locale. The
- // created instance owns the clone of the symbols.
-
- DecimalFormat::DecimalFormat(const UnicodeString& pattern,
- const DecimalFormatSymbols& symbols,
- UErrorCode& status)
- : NumberFormat(),
- fPosPrefixPattern(0),
- fNegPrefixPattern(0),
- fPosSuffixPattern(0),
- fNegSuffixPattern(0),
- fSymbols(0)
- {
- construct(status, &pattern, new DecimalFormatSymbols(symbols));
- }
-
- //------------------------------------------------------------------------------
- // Constructs a DecimalFormat instance with the specified number format
- // pattern and the number format symbols in the desired locale. The
- // created instance owns the symbols.
-
- void
- DecimalFormat::construct(UErrorCode& status,
- const UnicodeString* pattern,
- DecimalFormatSymbols* symbolsToAdopt,
- const Locale& locale)
- {
- fSymbols = symbolsToAdopt; // Do this BEFORE aborting on status failure!!!
- fDigitList = new DigitList(); // Do this BEFORE aborting on status failure!!!
- fRoundingIncrement = NULL;
- fRoundingDouble = 0.0;
- fRoundingMode = kRoundHalfEven;
- fPad = kPatternPadEscape;
- fPadPosition = kPadBeforePrefix;
- if (U_FAILURE(status)) return;
-
- fPosPrefixPattern = fPosSuffixPattern = NULL;
- fNegPrefixPattern = fNegSuffixPattern = NULL;
- fMultiplier = 1;
- fGroupingSize = 3;
- fDecimalSeparatorAlwaysShown = FALSE;
- fIsCurrencyFormat = FALSE;
- fUseExponentialNotation = FALSE;
- fMinExponentDigits = 0;
-
- if (fSymbols == NULL) fSymbols = new DecimalFormatSymbols(locale, status);
-
- UnicodeString str;
- // Uses the default locale's number format pattern if there isn't
- // one specified.
- if (pattern == NULL)
- {
- ResourceBundle resource(Locale::getDataDirectory(), Locale::getDefault(), status);
- resource.getArrayItem(fgNumberPatterns, 0, str, status);
- pattern = &str;
- }
-
- if (U_FAILURE(status)) return;
-
- applyPattern(*pattern, FALSE /*not localized*/, status);
- }
-
- //------------------------------------------------------------------------------
-
- DecimalFormat::~DecimalFormat()
- {
- delete fSymbols;
- delete fDigitList;
- delete fPosPrefixPattern;
- delete fPosSuffixPattern;
- delete fNegPrefixPattern;
- delete fNegSuffixPattern;
- delete fRoundingIncrement;
- }
-
- //------------------------------------------------------------------------------
- // copy constructor
-
- DecimalFormat::DecimalFormat(const DecimalFormat &source)
- : NumberFormat(source),
- fSymbols(NULL),
- fDigitList(NULL),
- fPosPrefixPattern(NULL),
- fPosSuffixPattern(NULL),
- fNegPrefixPattern(NULL),
- fNegSuffixPattern(NULL),
- fRoundingIncrement(NULL)
- {
- *this = source;
- }
-
- //------------------------------------------------------------------------------
- // assignment operator
- // Note that fDigitList is not considered a significant part of the
- // DecimalFormat because it's used as a buffer to process the numbers.
-
- static void _copy_us_ptr(UnicodeString** pdest, const UnicodeString* source) {
- if (source == NULL) {
- delete *pdest;
- *pdest = NULL;
- } else if (*pdest == NULL) {
- *pdest = new UnicodeString(*source);
- } else {
- **pdest = *source;
- }
- }
-
- DecimalFormat&
- DecimalFormat::operator=(const DecimalFormat& rhs)
- {
- if(this != &rhs) {
- NumberFormat::operator=(rhs);
- fPositivePrefix = rhs.fPositivePrefix;
- fPositiveSuffix = rhs.fPositiveSuffix;
- fNegativePrefix = rhs.fNegativePrefix;
- fNegativeSuffix = rhs.fNegativeSuffix;
- _copy_us_ptr(&fPosPrefixPattern, rhs.fPosPrefixPattern);
- _copy_us_ptr(&fPosSuffixPattern, rhs.fPosSuffixPattern);
- _copy_us_ptr(&fNegPrefixPattern, rhs.fNegPrefixPattern);
- _copy_us_ptr(&fNegSuffixPattern, rhs.fNegSuffixPattern);
- if(rhs.fRoundingIncrement == NULL) {
- delete fRoundingIncrement;
- fRoundingIncrement = NULL;
- }
- else if(fRoundingIncrement == NULL) {
- fRoundingIncrement = new DigitList(*rhs.fRoundingIncrement);
- }
- else {
- *fRoundingIncrement = *rhs.fRoundingIncrement;
- }
- fRoundingDouble = rhs.fRoundingDouble;
- fMultiplier = rhs.fMultiplier;
- fGroupingSize = rhs.fGroupingSize;
- fDecimalSeparatorAlwaysShown = rhs.fDecimalSeparatorAlwaysShown;
- if(fSymbols == NULL)
- fSymbols = new DecimalFormatSymbols(*rhs.fSymbols);
- else
- *fSymbols = *rhs.fSymbols;
- fUseExponentialNotation = rhs.fUseExponentialNotation;
- /*Bertrand A. D. Update 98.03.17*/
- fIsCurrencyFormat = rhs.fIsCurrencyFormat;
- /*end of Update*/
- fMinExponentDigits = rhs.fMinExponentDigits;
- if (fDigitList == NULL) fDigitList = new DigitList();
-
- /* sfb 990629 */
- fFormatWidth = rhs.fFormatWidth;
- fPad = rhs.fPad;
- fPadPosition = rhs.fPadPosition;
- /* end sfb */
- }
- return *this;
- }
-
- //------------------------------------------------------------------------------
-
- bool_t
- DecimalFormat::operator==(const Format& that) const
- {
- if (this == &that) return TRUE;
-
- if (getDynamicClassID() != that.getDynamicClassID()) return FALSE;
-
- const DecimalFormat* other = (DecimalFormat*)&that;
-
- #if 0
- // This code makes it easy to determine why two format objects that should
- // be equal aren't.
- bool_t first = TRUE;
- if (!NumberFormat::operator==(that)) {
- if (first) { printf("[ "); first = FALSE; } else { printf(", "); }
- debug("NumberFormat::!=");
- }
- if (!((fPosPrefixPattern == other->fPosPrefixPattern && // both null
- fPositivePrefix == other->fPositivePrefix)
- || (fPosPrefixPattern != 0 && other->fPosPrefixPattern != 0 &&
- *fPosPrefixPattern == *other->fPosPrefixPattern))) {
- if (first) { printf("[ "); first = FALSE; } else { printf(", "); }
- debug("Pos Prefix !=");
- }
- if (!((fPosSuffixPattern == other->fPosSuffixPattern && // both null
- fPositiveSuffix == other->fPositiveSuffix)
- || (fPosSuffixPattern != 0 && other->fPosSuffixPattern != 0 &&
- *fPosSuffixPattern == *other->fPosSuffixPattern))) {
- if (first) { printf("[ "); first = FALSE; } else { printf(", "); }
- debug("Pos Suffix !=");
- }
- if (!((fNegPrefixPattern == other->fNegPrefixPattern && // both null
- fNegativePrefix == other->fNegativePrefix)
- || (fNegPrefixPattern != 0 && other->fNegPrefixPattern != 0 &&
- *fNegPrefixPattern == *other->fNegPrefixPattern))) {
- if (first) { printf("[ "); first = FALSE; } else { printf(", "); }
- debug("Neg Prefix ");
- if (fNegPrefixPattern == NULL) {
- debug("NULL(");
- debugout(fNegativePrefix);
- debug(")");
- } else {
- debugout(*fNegPrefixPattern);
- }
- debug(" != ");
- if (other->fNegPrefixPattern == NULL) {
- debug("NULL(");
- debugout(other->fNegativePrefix);
- debug(")");
- } else {
- debugout(*other->fNegPrefixPattern);
- }
- }
- if (!((fNegSuffixPattern == other->fNegSuffixPattern && // both null
- fNegativeSuffix == other->fNegativeSuffix)
- || (fNegSuffixPattern != 0 && other->fNegSuffixPattern != 0 &&
- *fNegSuffixPattern == *other->fNegSuffixPattern))) {
- if (first) { printf("[ "); first = FALSE; } else { printf(", "); }
- debug("Neg Suffix ");
- if (fNegSuffixPattern == NULL) {
- debug("NULL(");
- debugout(fNegativeSuffix);
- debug(")");
- } else {
- debugout(*fNegSuffixPattern);
- }
- debug(" != ");
- if (other->fNegSuffixPattern == NULL) {
- debug("NULL(");
- debugout(other->fNegativeSuffix);
- debug(")");
- } else {
- debugout(*other->fNegSuffixPattern);
- }
- }
- if (!((fRoundingIncrement == other->fRoundingIncrement) // both null
- || (fRoundingIncrement != NULL &&
- other->fRoundingIncrement != NULL &&
- *fRoundingIncrement == *other->fRoundingIncrement))) {
- if (first) { printf("[ "); first = FALSE; } else { printf(", "); }
- debug("Rounding Increment !=");
- }
- if (fMultiplier != other->fMultiplier) {
- if (first) { printf("[ "); first = FALSE; }
- printf("Multiplier %ld != %ld", fMultiplier, other->fMultiplier);
- }
- if (fGroupingSize != other->fGroupingSize) {
- if (first) { printf("[ "); first = FALSE; } else { printf(", "); }
- printf("Grouping Size %ld != %ld", fGroupingSize, other->fGroupingSize);
- }
- if (fDecimalSeparatorAlwaysShown != other->fDecimalSeparatorAlwaysShown) {
- if (first) { printf("[ "); first = FALSE; } else { printf(", "); }
- printf("Dec Sep Always %d != %d", fDecimalSeparatorAlwaysShown, other->fDecimalSeparatorAlwaysShown);
- }
- if (fUseExponentialNotation != other->fUseExponentialNotation) {
- if (first) { printf("[ "); first = FALSE; } else { printf(", "); }
- debug("Use Exp !=");
- }
- if (!(!fUseExponentialNotation ||
- fMinExponentDigits != other->fMinExponentDigits)) {
- if (first) { printf("[ "); first = FALSE; } else { printf(", "); }
- debug("Exp Digits !=");
- }
- if (*fSymbols != *(other->fSymbols)) {
- if (first) { printf("[ "); first = FALSE; } else { printf(", "); }
- debug("Symbols !=");
- }
- if (!first) { printf(" ]"); }
- #endif
-
- return (NumberFormat::operator==(that) &&
- ((fPosPrefixPattern == other->fPosPrefixPattern && // both null
- fPositivePrefix == other->fPositivePrefix)
- || (fPosPrefixPattern != 0 && other->fPosPrefixPattern != 0 &&
- *fPosPrefixPattern == *other->fPosPrefixPattern)) &&
- ((fPosSuffixPattern == other->fPosSuffixPattern && // both null
- fPositiveSuffix == other->fPositiveSuffix)
- || (fPosSuffixPattern != 0 && other->fPosSuffixPattern != 0 &&
- *fPosSuffixPattern == *other->fPosSuffixPattern)) &&
- ((fNegPrefixPattern == other->fNegPrefixPattern && // both null
- fNegativePrefix == other->fNegativePrefix)
- || (fNegPrefixPattern != 0 && other->fNegPrefixPattern != 0 &&
- *fNegPrefixPattern == *other->fNegPrefixPattern)) &&
- ((fNegSuffixPattern == other->fNegSuffixPattern && // both null
- fNegativeSuffix == other->fNegativeSuffix)
- || (fNegSuffixPattern != 0 && other->fNegSuffixPattern != 0 &&
- *fNegSuffixPattern == *other->fNegSuffixPattern)) &&
- ((fRoundingIncrement == other->fRoundingIncrement) // both null
- || (fRoundingIncrement != NULL &&
- other->fRoundingIncrement != NULL &&
- *fRoundingIncrement == *other->fRoundingIncrement)) &&
- fMultiplier == other->fMultiplier &&
- fGroupingSize == other->fGroupingSize &&
- fDecimalSeparatorAlwaysShown == other->fDecimalSeparatorAlwaysShown &&
- fUseExponentialNotation == other->fUseExponentialNotation &&
- (!fUseExponentialNotation ||
- fMinExponentDigits == other->fMinExponentDigits) &&
- *fSymbols == *(other->fSymbols));
- }
-
- //------------------------------------------------------------------------------
-
- Format*
- DecimalFormat::clone() const
- {
- return new DecimalFormat(*this);
- }
-
- //------------------------------------------------------------------------------
-
- UnicodeString&
- DecimalFormat::format(int32_t number,
- UnicodeString& result,
- FieldPosition& fieldPosition) const
- {
- // Clears field positions.
- fieldPosition.setBeginIndex(0);
- fieldPosition.setEndIndex(0);
-
- // If we are to do rounding, we need to move into the BigDecimal
- // domain in order to do divide/multiply correctly.
- if (fRoundingIncrement != NULL) {
- return format((double) number, result, fieldPosition);
- }
-
- bool_t isNegative = (number < 0);
- if (isNegative) number = -number; // NOTE: number will still be negative if it is LONG_MIN
-
- // In general, long values always represent real finite numbers, so
- // we don't have to check for +/- Infinity or NaN. However, there
- // is one case we have to be careful of: The multiplier can push
- // a number near MIN_VALUE or MAX_VALUE outside the legal range. We
- // check for this before multiplying, and if it happens we use doubles
- // instead, trading off accuracy for range.
- if (fMultiplier != 1 && fMultiplier != 0)
- {
- bool_t useDouble = FALSE;
-
- if (number < 0) // This can only happen if number == Long.MIN_VALUE
- {
- int32_t cutoff = LONG_MIN / fMultiplier;
- useDouble = (number < cutoff);
- }
- else
- {
- int32_t cutoff = T_INT32_MAX / fMultiplier;
- useDouble = (number > cutoff);
- }
- // use double to format the number instead so we don't get out
- // of range errors.
- if (useDouble)
- {
- double dnumber = (double)(isNegative ? -number : number);
- return format(dnumber, result, fieldPosition);
- }
- }
-
- number *= fMultiplier;
- DecimalFormat *non_const = (DecimalFormat*)this;
- non_const->fDigitList->set(number, fUseExponentialNotation ?
- getMinimumIntegerDigits() + getMaximumFractionDigits() : 0);
-
- return subformat(result, fieldPosition, isNegative, TRUE);
- }
-
- //------------------------------------------------------------------------------
-
- UnicodeString&
- DecimalFormat::format( double number,
- UnicodeString& result,
- FieldPosition& fieldPosition) const
- {
- // Clears field positions.
- fieldPosition.setBeginIndex(0);
- fieldPosition.setEndIndex(0);
-
- // Special case for NaN, sets the begin and end index to be the
- // the string length of localized name of NaN.
- if (icu_isNaN(number))
- {
- if (fieldPosition.getField() == NumberFormat::kIntegerField)
- fieldPosition.setBeginIndex(result.size());
-
- UnicodeString nan;
- result += fSymbols->getNaN(nan);
-
- if (fieldPosition.getField() == NumberFormat::kIntegerField)
- fieldPosition.setEndIndex(result.size());
-
- addPadding(result, FALSE, FALSE /*ignored*/);
- return result;
- }
-
- /* Detecting whether a double is negative is easy with the exception of
- * the value -0.0. This is a double which has a zero mantissa (and
- * exponent), but a negative sign bit. It is semantically distinct from
- * a zero with a positive sign bit, and this distinction is important
- * to certain kinds of computations. However, it's a little tricky to
- * detect, since (-0.0 == 0.0) and !(-0.0 < 0.0). How then, you may
- * ask, does it behave distinctly from +0.0? Well, 1/(-0.0) ==
- * -Infinity. Proper detection of -0.0 is needed to deal with the
- * issues raised by bugs 4106658, 4106667, and 4147706. Liu 7/6/98.
- */
- bool_t isNegative = (number < 0.0) || (number == 0.0 && 1/number < 0.0);
- if (isNegative) number = -number;
-
- // Do this BEFORE checking to see if value is infinite! Sets the
- // begin and end index to be length of the string composed of
- // localized name of Infinite and the positive/negative localized
- // signs.
-
- if (fMultiplier != 1) number *= fMultiplier;
-
- // Apply rounding after multiplier
- if (fRoundingIncrement != NULL) {
- number = fRoundingDouble
- * round(number / fRoundingDouble, fRoundingMode, isNegative);
- }
-
- // Special case for INFINITE,
- if (icu_isInfinite(number))
- {
- result += (isNegative ? fNegativePrefix : fPositivePrefix);
-
- if (fieldPosition.getField() == NumberFormat::kIntegerField)
- fieldPosition.setBeginIndex(result.size());
-
- UnicodeString inf;
- result += fSymbols->getInfinity(inf);
-
- if (fieldPosition.getField() == NumberFormat::kIntegerField)
- fieldPosition.setEndIndex(result.size());
-
- result += (isNegative ? fNegativeSuffix : fPositiveSuffix);
-
- addPadding(result, TRUE, isNegative);
- return result;
- }
-
- // At this point we are guaranteed a nonnegative finite
- // number.
- DecimalFormat* non_const = (DecimalFormat*)this;
- // Sets up the digit list buffer with the number.
- // Please see digitlst.cpp for the details regarding DigitList.
- non_const->fDigitList->set(number, fUseExponentialNotation ?
- getMinimumIntegerDigits() + getMaximumFractionDigits() :
- getMaximumFractionDigits(),
- !fUseExponentialNotation);
-
- return subformat(result, fieldPosition, isNegative, FALSE);
- }
-
- /**
- * Round a double value to the nearest integer according to the
- * given mode.
- * @param a the absolute value of the number to be rounded
- * @param mode a BigDecimal rounding mode
- * @param isNegative true if the number to be rounded is negative
- * @return the absolute value of the rounded result
- */
- double DecimalFormat::round(double a, ERoundingMode mode, bool_t isNegative) {
- switch (mode) {
- case kRoundCeiling:
- return isNegative ? icu_floor(a) : icu_ceil(a);
- case kRoundFloor:
- return isNegative ? icu_ceil(a) : icu_floor(a);
- case kRoundDown:
- return icu_floor(a);
- case kRoundUp:
- return icu_ceil(a);
- case kRoundHalfEven:
- {
- double f = icu_floor(a);
- if ((a - f) != 0.5) {
- return icu_floor(a + 0.5);
- }
- double g = f / 2.0;
- return (g == icu_floor(g)) ? f : (f + 1.0);
- }
- case kRoundHalfDown:
- return ((a - icu_floor(a)) <= 0.5) ? icu_floor(a) : icu_ceil(a);
- case kRoundHalfUp:
- return ((a - icu_floor(a)) < 0.5) ? icu_floor(a) : icu_ceil(a);
- }
- return 1.0;
- }
-
- UnicodeString&
- DecimalFormat::format( const Formattable& obj,
- UnicodeString& result,
- FieldPosition& fieldPosition,
- UErrorCode& status) const
- {
- return NumberFormat::format(obj, result, fieldPosition, status);
- }
-
- //------------------------------------------------------------------------------
-
- /**
- * Complete the formatting of a finite number. On entry, the fDigitList must
- * be filled in with the correct digits.
- */
- UnicodeString&
- DecimalFormat::subformat(UnicodeString& result,
- FieldPosition& fieldPosition,
- bool_t isNegative,
- bool_t isInteger) const
- {
- // Gets the localized zero Unicode character.
- UChar zero = fSymbols->getZeroDigit();
- int32_t zeroDelta = zero - '0'; // '0' is the DigitList representation of zero
- UChar grouping = fSymbols->getGroupingSeparator();
- UChar decimal = fIsCurrencyFormat ?
- fSymbols->getMonetaryDecimalSeparator() :
- fSymbols->getDecimalSeparator();
- int32_t maxIntDig = getMaximumIntegerDigits();
- int32_t minIntDig = getMinimumIntegerDigits();
-
- /* Per bug 4147706, DecimalFormat must respect the sign of numbers which
- * format as zero. This allows sensible computations and preserves
- * relations such as signum(1/x) = signum(x), where x is +Infinity or
- * -Infinity. Prior to this fix, we always formatted zero values as if
- * they were positive. Liu 7/6/98.
- */
- if (fDigitList->isZero())
- {
- fDigitList->fDecimalAt = fDigitList->fCount = 0; // Normalize
- }
-
- // Appends the prefix.
- result += (isNegative ? fNegativePrefix : fPositivePrefix);
-
- if (fUseExponentialNotation)
- {
- // Record field information for caller.
- if (fieldPosition.getField() == NumberFormat::kIntegerField)
- {
- fieldPosition.setBeginIndex(result.size());
- fieldPosition.setEndIndex(-1);
- }
- else if (fieldPosition.getField() == NumberFormat::kFractionField)
- {
- fieldPosition.setBeginIndex(-1);
- }
-
- // Minimum integer digits are handled in exponential format by
- // adjusting the exponent. For example, 0.01234 with 3 minimum
- // integer digits is "123.4E-4".
-
- // Maximum integer digits are interpreted as indicating the
- // repeating range. This is useful for engineering notation, in
- // which the exponent is restricted to a multiple of 3. For
- // example, 0.01234 with 3 maximum integer digits is "12.34e-3".
- // If maximum integer digits are defined and are larger than
- // minimum integer digits, then minimum integer digits are
- // ignored.
- int32_t exponent = fDigitList->fDecimalAt;
- if (maxIntDig > 1 && maxIntDig != minIntDig) {
- // A exponent increment is defined; adjust to it.
- exponent = (exponent > 0) ? (exponent - 1) / maxIntDig
- : (exponent / maxIntDig) - 1;
- exponent *= maxIntDig;
- } else {
- // No exponent increment is defined; use minimum integer digits.
- // If none is specified, as in "#E0", generate 1 integer digit.
- exponent -= (minIntDig > 0 || getMinimumFractionDigits() > 0)
- ? minIntDig : 1;
- }
-
- // We now output a minimum number of digits, and more if there
- // are more digits, up to the maximum number of digits. We
- // place the decimal point after the "integer" digits, which
- // are the first (decimalAt - exponent) digits.
- int32_t minimumDigits = minIntDig + getMinimumFractionDigits();
- // The number of integer digits is handled specially if the number
- // is zero, since then there may be no digits.
- int32_t integerDigits = fDigitList->isZero() ? minIntDig :
- fDigitList->fDecimalAt - exponent;
- int32_t totalDigits = fDigitList->fCount;
- if (minimumDigits > totalDigits) totalDigits = minimumDigits;
- if (integerDigits > totalDigits) totalDigits = integerDigits;
-
- // totalDigits records total number of digits needs to be processed
- int32_t i;
- for (i=0; i<totalDigits; ++i)
- {
- if (i == integerDigits)
- {
- // Record field information for caller.
- if (fieldPosition.getField() == NumberFormat::kIntegerField)
- fieldPosition.setEndIndex(result.size());
-
- result += (decimal);
-
- // Record field information for caller.
- if (fieldPosition.getField() == NumberFormat::kFractionField)
- fieldPosition.setBeginIndex(result.size());
- }
- // Restores the digit character or pads the buffer with zeros.
- UChar c = ((i < fDigitList->fCount) ?
- (UChar)(fDigitList->fDigits[i] + zeroDelta) :
- zero);
- result += c;
- }
-
- // Record field information
- if (fieldPosition.getField() == NumberFormat::kIntegerField)
- {
- if (fieldPosition.getEndIndex() < 0)
- fieldPosition.setEndIndex(result.size());
- }
- else if (fieldPosition.getField() == NumberFormat::kFractionField)
- {
- if (fieldPosition.getBeginIndex() < 0)
- fieldPosition.setBeginIndex(result.size());
- fieldPosition.setEndIndex(result.size());
- }
-
- // The exponent is output using the pattern-specified minimum
- // exponent digits. There is no maximum limit to the exponent
- // digits, since truncating the exponent would result in an
- // unacceptable inaccuracy.
- result += fSymbols->getExponentialSymbol();
-
- // For zero values, we force the exponent to zero. We
- // must do this here, and not earlier, because the value
- // is used to determine integer digit count above.
- if (fDigitList->isZero()) exponent = 0;
-
- bool_t negativeExponent = exponent < 0;
- if (negativeExponent) {
- exponent = -exponent;
- result += fSymbols->getMinusSign();
- } else if (fExponentSignAlwaysShown) {
- result += fSymbols->getPlusSign();
- }
- if (negativeExponent) exponent = -exponent;
- DecimalFormat* non_const = (DecimalFormat*)this;
- non_const->fDigitList->set(exponent);
- for (i=fDigitList->fDecimalAt; i<fMinExponentDigits; ++i)
- result += (zero);
- for (i=0; i<fDigitList->fDecimalAt; ++i)
- {
- UChar c = ((i < fDigitList->fCount) ?
- (UChar)(fDigitList->fDigits[i] + zeroDelta) : zero);
- result += c;
- }
- }
- else // Not using exponential notation
- {
- // Record field information for caller.
- if (fieldPosition.getField() == NumberFormat::kIntegerField)
- fieldPosition.setBeginIndex(result.size());
-
- // Output the integer portion. Here 'count' is the total
- // number of integer digits we will display, including both
- // leading zeros required to satisfy getMinimumIntegerDigits,
- // and actual digits present in the number.
- int32_t count = minIntDig;
- int32_t digitIndex = 0; // Index into fDigitList->fDigits[]
- if (fDigitList->fDecimalAt > 0 && count < fDigitList->fDecimalAt)
- count = fDigitList->fDecimalAt;
-
- // Handle the case where getMaximumIntegerDigits() is smaller
- // than the real number of integer digits. If this is so, we
- // output the least significant max integer digits. For example,
- // the value 1997 printed with 2 max integer digits is just "97".
-
- if (count > maxIntDig)
- {
- count = maxIntDig;
- digitIndex = fDigitList->fDecimalAt - count;
- }
-
- int32_t sizeBeforeIntegerPart = result.size();
-
- int32_t i;
- for (i=count-1; i>=0; --i)
- {
- if (i < fDigitList->fDecimalAt && digitIndex < fDigitList->fCount)
- {
- // Output a real digit
- result += ((UChar)(fDigitList->fDigits[digitIndex++] + zeroDelta));
- }
- else
- {
- // Output a leading zero
- result += (zero);
- }
-
- // Output grouping separator if necessary. Don't output a
- // grouping separator if i==0 though; that's at the end of
- // the integer part.
- if (isGroupingUsed() && i>0 && (fGroupingSize != 0) && (i % fGroupingSize == 0))
- {
- result += (grouping);
- }
- }
-
- // Record field information for caller.
- if (fieldPosition.getField() == NumberFormat::kIntegerField)
- fieldPosition.setEndIndex(result.size());
-
- // Determine whether or not there are any printable fractional
- // digits. If we've used up the digits we know there aren't.
- bool_t fractionPresent = (getMinimumFractionDigits() > 0) ||
- (!isInteger && digitIndex < fDigitList->fCount);
-
- // If there is no fraction present, and we haven't printed any
- // integer digits, then print a zero. Otherwise we won't print
- // _any_ digits, and we won't be able to parse this string.
- if (!fractionPresent && result.size() == sizeBeforeIntegerPart)
- result += (zero);
-
- // Output the decimal separator if we always do so.
- if (fDecimalSeparatorAlwaysShown || fractionPresent)
- result += (decimal);
-
- // Record field information for caller.
- if (fieldPosition.getField() == NumberFormat::kFractionField)
- fieldPosition.setBeginIndex(result.size());
-
- for (i=0; i < getMaximumFractionDigits(); ++i)
- {
- // Here is where we escape from the loop. We escape if we've output
- // the maximum fraction digits (specified in the for expression above).
- // We also stop when we've output the minimum digits and either:
- // we have an integer, so there is no fractional stuff to display,
- // or we're out of significant digits.
- if (i >= getMinimumFractionDigits() &&
- (isInteger || digitIndex >= fDigitList->fCount))
- break;
-
- // Output leading fractional zeros. These are zeros that come after
- // the decimal but before any significant digits. These are only
- // output if abs(number being formatted) < 1.0.
- if (-1-i > (fDigitList->fDecimalAt-1))
- {
- result += (zero);
- continue;
- }
-
- // Output a digit, if we have any precision left, or a
- // zero if we don't. We don't want to output noise digits.
- if (!isInteger && digitIndex < fDigitList->fCount)
- {
- result += ((UChar)(fDigitList->fDigits[digitIndex++] + zeroDelta));
- }
- else
- {
- result += (zero);
- }
- }
-
- // Record field information for caller.
- if (fieldPosition.getField() == NumberFormat::kFractionField)
- fieldPosition.setEndIndex(result.size());
- }
-
- result += (isNegative ? fNegativeSuffix : fPositiveSuffix);
-
- addPadding(result, TRUE, isNegative);
- return result;
- }
-
- /**
- * Inserts the character fPad as needed to expand result to fFormatWidth.
- * @param result the string to be padded
- * @param hasAffixes if true, padding is positioned appropriately before or
- * after affixes. If false, then isNegative is ignored, and there are only
- * two effective pad positions: kPadBeforePrefix/kPadAfterPrefix and
- * kPadBeforeSuffix/kPadAfterSuffix.
- * @param isNegative must be true if result contains a formatted negative
- * number, and false otherwise. Ignored if hasAffixes is false.
- */
- void DecimalFormat::addPadding(UnicodeString& result, bool_t hasAffixes,
- bool_t isNegative) const {
- if (fFormatWidth > 0) {
- int32_t len = fFormatWidth - result.size();
- if (len > 0) {
- UChar* padding = (UChar*) icu_malloc(sizeof(UChar) * len);
- for (int32_t i=0; i<len; ++i) {
- padding[i] = fPad;
- }
- switch (fPadPosition) {
- case kPadAfterPrefix:
- if (hasAffixes) {
- result.insert(isNegative ? fNegativePrefix.size()
- : fPositivePrefix.size(),
- padding, len);
- break;
- } // else fall through to next case
- case kPadBeforePrefix:
- result.insert(0, padding, len);
- break;
- case kPadBeforeSuffix:
- if (hasAffixes) {
- result.insert(result.size() -
- (isNegative ? fNegativeSuffix.size()
- : fPositiveSuffix.size()),
- padding, len);
- break;
- } // else fall through to next case
- case kPadAfterSuffix:
- result += padding;
- break;
- }
- icu_free(padding);
- }
- }
- }
-
- //------------------------------------------------------------------------------
-
- void
- DecimalFormat::parse(const UnicodeString& text,
- Formattable& result,
- UErrorCode& status) const
- {
- NumberFormat::parse(text, result, status);
- }
-
- const int32_t DecimalFormat::fgStatusInfinite = 0;
- const int32_t DecimalFormat::fgStatusPositive = 1;
- const int32_t DecimalFormat::fgStatusLength = 2;
-
- void
- DecimalFormat::parse(const UnicodeString& text,
- Formattable& result,
- ParsePosition& parsePosition) const
- {
- // Skip padding characters, if any
- int32_t backup = parsePosition.getIndex();
- int32_t i = backup;
- if (fFormatWidth > 0) {
- while (i < text.size() && text[(UTextOffset) i] == fPad) {
- ++i;
- }
- parsePosition.setIndex(i);
- }
-
- // special case NaN
- UnicodeString nan;
- fSymbols->getNaN(nan);
- // If the text is composed of the representation of NaN, returns NaN.
- if (text.compare(parsePosition.getIndex(), nan.size(), nan,
- 0, nan.size()) == 0) {
- parsePosition.setIndex(parsePosition.getIndex() + nan.size());
- result.setDouble(icu_getNaN());
- return;
- }
-
- // status is used to record whether a number is
- // infinite or positive.
- bool_t status[fgStatusLength];
-
- if (!subparse(text, parsePosition, *fDigitList, FALSE, status)) {
- parsePosition.setIndex(backup);
- return;
- } else if (fFormatWidth < 0) {
- i = parsePosition.getIndex();
- while (i < text.size() && text[(UTextOffset) i] == fPad) {
- ++i;
- }
- parsePosition.setIndex(i);
- }
-
- // Handle infinity
- if (status[fgStatusInfinite]) {
- double inf = icu_getInfinity();
- result.setDouble(status[fgStatusPositive] ? inf : -inf);
- return;
- }
-
- // Do as much of the multiplier conversion as possible without
- // losing accuracy.
- int32_t mult = fMultiplier; // Don't modify this.multiplier
- while (mult % 10 == 0) {
- --fDigitList->fDecimalAt;
- mult /= 10;
- }
-
- // Handle integral values
- if (fDigitList->fitsIntoLong(status[fgStatusPositive],
- isParseIntegerOnly())) {
- int32_t n = fDigitList->getLong();
- if (n % mult == 0) {
- n /= mult;
- result.setLong((status[fgStatusPositive] == n>=0) ? n : -n);
- return;
- }
- }
-
- // Handle non-integral values
- double a = fDigitList->getDouble();
- if (mult != 1) {
- a /= mult;
- }
- result.setDouble(status[fgStatusPositive] ? a : -a);
- }
-
- /**
- * Parse the given text into a number. The text is parsed beginning at
- * parsePosition, until an unparseable character is seen.
- * @param text The string to parse.
- * @param parsePosition The position at which to being parsing. Upon
- * return, the first unparseable character.
- * @param digits The DigitList to set to the parsed value.
- * @param isExponent If true, parse an exponent. This means no
- * infinite values and integer only.
- * @param status Upon return contains boolean status flags indicating
- * whether the value was infinite and whether it was positive.
- */
- bool_t DecimalFormat::subparse(const UnicodeString& text, ParsePosition& parsePosition,
- DigitList& digits, bool_t isExponent,
- bool_t* status) const
- {
- int32_t position = parsePosition.getIndex();
- int32_t oldStart = parsePosition.getIndex();
- int32_t backup;
-
- // check for positivePrefix; take longest
- bool_t gotPositive = text.compare(position,fPositivePrefix.size(),fPositivePrefix,0,
- fPositivePrefix.size()) == 0;
- bool_t gotNegative = text.compare(position,fNegativePrefix.size(),fNegativePrefix,0,
- fNegativePrefix.size()) == 0;
- // If the number is positive and negative at the same time,
- // 1. the number is positive if the positive prefix is longer
- // 2. the number is negative if the negative prefix is longer
- if (gotPositive && gotNegative) {
- if (fPositivePrefix.size() > fNegativePrefix.size())
- gotNegative = FALSE;
- else if (fPositivePrefix.size() < fNegativePrefix.size())
- gotPositive = FALSE;
- }
- if(gotPositive)
- position += fPositivePrefix.size();
- else if(gotNegative)
- position += fNegativePrefix.size();
- else {
- parsePosition.setErrorIndex(position);
- return FALSE;
- }
- // process digits or Inf, find decimal position
- status[fgStatusInfinite] = FALSE;
- UnicodeString inf;
- fSymbols->getInfinity(inf);
- if (!isExponent && text.compare(position,inf.size(),inf,0,
- inf.size()) == 0)
- {
- // Found a infinite number.
- position += inf.size();
- status[fgStatusInfinite] = TRUE;
- } else {
- // We now have a string of digits, possibly with grouping symbols,
- // and decimal points. We want to process these into a DigitList.
- // We don't want to put a bunch of leading zeros into the DigitList
- // though, so we keep track of the location of the decimal point,
- // put only significant digits into the DigitList, and adjust the
- // exponent as needed.
-
- digits.fDecimalAt = digits.fCount = 0;
- UChar zero = fSymbols->getZeroDigit();
- //UChar nine = (UChar)(zero + 9);
- //int32_t zeroDelta = '0' - zero;
- UChar decimal = fIsCurrencyFormat ?
- fSymbols->getMonetaryDecimalSeparator() : fSymbols->getDecimalSeparator();
- UChar grouping = fSymbols->getGroupingSeparator();
- UChar exponentChar = fSymbols->getExponentialSymbol();
- bool_t sawDecimal = FALSE;
- bool_t sawExponent = FALSE;
- bool_t sawDigit= FALSE;
- int32_t exponent = 0; // Set to the exponent value, if any
-
- // We have to track digitCount ourselves, because digits.fCount will
- // pin when the maximum allowable digits is reached.
- int32_t digitCount = 0;
-
- backup = -1;
- for (; position < text.size(); ++position)
- {
- UChar ch = text[(UTextOffset)position];
-
- /* We recognize all digit ranges, not only the Latin digit range
- * '0'..'9'. We do so by using the Character.digit() method,
- * which converts a valid Unicode digit to the range 0..9.
- *
- * The character 'ch' may be a digit. If so, place its value
- * from 0 to 9 in 'digit'. First try using the locale digit,
- * which may or MAY NOT be a standard Unicode digit range. If
- * this fails, try using the standard Unicode digit ranges by
- * calling Character.digit(). If this also fails, digit will
- * have a value outside the range 0..9.
- */
- int32_t digit = ch - zero;
- if (digit < 0 || digit > 9) digit = Unicode::digitValue(ch);
-
- if (digit == 0)
- {
- // Cancel out backup setting (see grouping handler below)
- backup = -1; // Do this BEFORE continue statement below!!!
- sawDigit = TRUE;
-
- // Handle leading zeros
- if (digits.fCount == 0)
- {
- // Ignore leading zeros in integer part of number.
- if (!sawDecimal) continue;
-
- // If we have seen the decimal, but no significant digits yet,
- // then we account for leading zeros by decrementing the
- // digits.fDecimalAt into negative values.
- --digits.fDecimalAt;
- }
- else
- {
- // output a regular zero digit.
- ++digitCount;
- digits.append((char)(digit + '0'));
- }
- }
- else if (digit > 0 && digit <= 9)
- {
- sawDigit = TRUE;
- // output a regular non-zero digit.
- ++digitCount;
- digits.append((char)(digit + '0'));
-
- // Cancel out backup setting (see grouping handler below)
- backup = -1;
- }
- else if (!isExponent && ch == decimal)
- {
- // If we're only parsing integers, or if we ALREADY saw the
- // decimal, then don't parse this one.
- if (isParseIntegerOnly() || sawDecimal) break;
- digits.fDecimalAt = digitCount; // Not digits.fCount!
- sawDecimal = TRUE;
- }
- else if (!isExponent && ch == grouping && isGroupingUsed())
- {
- // Ignore grouping characters, if we are using them, but require
- // that they be followed by a digit. Otherwise we backup and
- // reprocess them.
- backup = position;
- }
- else if (!isExponent && ch == exponentChar && !sawExponent)
- {
- // Parse sign, if present
- bool_t negExp = FALSE;
- int32_t pos = position + 1; // position + exponentSep.length();
- if (pos < text.size()) {
- ch = text[(UTextOffset) pos];
- if (ch == fSymbols->getPlusSign()) {
- ++pos;
- } else if (ch == fSymbols->getMinusSign()) {
- ++pos;
- negExp = TRUE;
- }
- }
-
- DigitList exponentDigits;
- exponentDigits.fCount = 0;
- while (pos < text.size()) {
- digit = text[(UTextOffset) pos] - zero;
- //~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~
- // TEMPORARY WORKAROUND
- //~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~
- // The following code is disabled pending a fix to
- // Unicode::digitValue(). Currently,
- // Unicode::digitValue(']') returns 0, when it should
- // return -1. Liu 6/15/99
- //~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~
- // TEMPORARY WORKAROUND
- //~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~~*~
-
- // if (digit < 0 || digit > 9) {
- // digit = Unicode::digitValue(ch);
- // }
- if (digit >= 0 && digit <= 9) {
- exponentDigits.append((char)(digit + '0'));
- ++pos;
- } else {
- break;
- }
- }
-
- if (exponentDigits.fCount > 0) {
- exponentDigits.fDecimalAt = exponentDigits.fCount;
- exponent = exponentDigits.getLong();
- if (negExp) {
- exponent = -exponent;
- }
- position = pos; // Advance past the exponent
- sawExponent = TRUE;
- }
-
- break; // Whether we fail or succeed, we exit this loop
- }
- else break;
- }
-
- if (backup != -1) position = backup;
-
- // If there was no decimal point we have an integer
- if (!sawDecimal) digits.fDecimalAt = digitCount; // Not digits.fCount!
-
- // Adjust for exponent, if any
- digits.fDecimalAt += exponent;
-
- // If none of the text string was recognized. For example, parse
- // "x" with pattern "#0.00" (return index and error index both 0)
- // parse "$" with pattern "$#0.00". (return index 0 and error index
- // 1).
- if (!sawDigit && digitCount == 0) {
- parsePosition.setIndex(oldStart);
- parsePosition.setErrorIndex(oldStart);
- return FALSE;
- }
- }
-
- // check for positiveSuffix
- if (gotPositive)
- gotPositive = text.compare(position,fPositiveSuffix.size(),fPositiveSuffix,0,
- fPositiveSuffix.size()) == 0;
- if (gotNegative)
- gotNegative = text.compare(position,fNegativeSuffix.size(),fNegativeSuffix,0,
- fNegativeSuffix.size()) == 0;
-
- // if both match, take longest
- if (gotPositive && gotNegative) {
- if (fPositiveSuffix.size() > fNegativeSuffix.size())
- gotNegative = FALSE;
- else if (fPositiveSuffix.size() < fNegativeSuffix.size())
- gotPositive = FALSE;
- }
-
- // fail if neither or both
- if (gotPositive == gotNegative) {
- parsePosition.setErrorIndex(position);
- return FALSE;
- }
-
- parsePosition.setIndex(position +
- (gotPositive ? fPositiveSuffix.size() :
- fNegativeSuffix.size())); // mark success!
-
- status[fgStatusPositive] = gotPositive;
-
- if(parsePosition.getIndex() == oldStart) {
- parsePosition.setErrorIndex(position);
- return FALSE;
- }
- return TRUE;
- }
-
- //------------------------------------------------------------------------------
- // Gets the pointer to the localized decimal format symbols
-
- const DecimalFormatSymbols*
- DecimalFormat::getDecimalFormatSymbols() const
- {
- return fSymbols;
- }
-
- //------------------------------------------------------------------------------
- // De-owning the current localized symbols and adopt the new symbols.
-
- void
- DecimalFormat::adoptDecimalFormatSymbols(DecimalFormatSymbols* symbolsToAdopt)
- {
- if (fSymbols != NULL)
- delete fSymbols;
-
- fSymbols = symbolsToAdopt;
- }
- //------------------------------------------------------------------------------
- // Setting the symbols is equlivalent to adopting a newly created localized
- // symbols.
-
- void
- DecimalFormat::setDecimalFormatSymbols(const DecimalFormatSymbols& symbols)
- {
- adoptDecimalFormatSymbols(new DecimalFormatSymbols(symbols));
- expandAffixes();
- }
-
- //------------------------------------------------------------------------------
- // Gets the positive prefix of the number pattern.
-
- UnicodeString&
- DecimalFormat::getPositivePrefix(UnicodeString& result) const
- {
- result = fPositivePrefix;
- return result;
- }
-
- //------------------------------------------------------------------------------
- // Sets the positive prefix of the number pattern.
-
- void
- DecimalFormat::setPositivePrefix(const UnicodeString& newValue)
- {
- fPositivePrefix = newValue;
- delete fPosPrefixPattern;
- fPosPrefixPattern = 0;
- }
-
- //------------------------------------------------------------------------------
- // Gets the negative prefix of the number pattern.
-
- UnicodeString&
- DecimalFormat::getNegativePrefix(UnicodeString& result) const
- {
- result = fNegativePrefix;
- return result;
- }
-
- //------------------------------------------------------------------------------
- // Gets the negative prefix of the number pattern.
-
- void
- DecimalFormat::setNegativePrefix(const UnicodeString& newValue)
- {
- fNegativePrefix = newValue;
- delete fNegPrefixPattern;
- fNegPrefixPattern = 0;
- }
-
- //------------------------------------------------------------------------------
- // Gets the positive suffix of the number pattern.
-
- UnicodeString&
- DecimalFormat::getPositiveSuffix(UnicodeString& result) const
- {
- result = fPositiveSuffix;
- return result;
- }
-
- //------------------------------------------------------------------------------
- // Sets the positive suffix of the number pattern.
-
- void
- DecimalFormat::setPositiveSuffix(const UnicodeString& newValue)
- {
- fPositiveSuffix = newValue;
- delete fPosSuffixPattern;
- fPosSuffixPattern = 0;
- }
-
- //------------------------------------------------------------------------------
- // Gets the negative suffix of the number pattern.
-
- UnicodeString&
- DecimalFormat::getNegativeSuffix(UnicodeString& result) const
- {
- result = fNegativeSuffix;
- return result;
- }
-
- //------------------------------------------------------------------------------
- // Sets the negative suffix of the number pattern.
-
- void
- DecimalFormat::setNegativeSuffix(const UnicodeString& newValue)
- {
- fNegativeSuffix = newValue;
- delete fNegSuffixPattern;
- fNegSuffixPattern = 0;
- }
-
- //------------------------------------------------------------------------------
- // Gets the multiplier of the number pattern.
-
- int32_t DecimalFormat::getMultiplier() const
- {
- return fMultiplier;
- }
-
- //------------------------------------------------------------------------------
- // Sets the multiplier of the number pattern.
-
- void
- DecimalFormat::setMultiplier(int32_t newValue)
- {
- // We should really take a UErrorCode and disallow values <= 0 - liu
- fMultiplier = newValue;
- }
-
- /**
- * Get the rounding increment.
- * @return A positive rounding increment, or 0.0 if rounding
- * is not in effect.
- * @see #setRoundingIncrement
- * @see #getRoundingMode
- * @see #setRoundingMode
- */
- double DecimalFormat::getRoundingIncrement() {
- return fRoundingDouble;
- }
-
- /**
- * Set the rounding increment. This method also controls whether
- * rounding is enabled.
- * @param newValue A positive rounding increment, or 0.0 to disable rounding.
- * Negative increments are equivalent to 0.0.
- * @see #getRoundingIncrement
- * @see #getRoundingMode
- * @see #setRoundingMode
- */
- void DecimalFormat::setRoundingIncrement(double newValue) {
- if (newValue > 0.0) {
- if (fRoundingIncrement == NULL) {
- fRoundingIncrement = new DigitList();
- }
- fRoundingIncrement->set(newValue);
- fRoundingDouble = newValue;
- } else {
- delete fRoundingIncrement;
- fRoundingIncrement = NULL;
- fRoundingDouble = 0.0;
- }
- }
-
- /**
- * Get the rounding mode.
- * @return A rounding mode
- * @see #setRoundingIncrement
- * @see #getRoundingIncrement
- * @see #setRoundingMode
- */
- DecimalFormat::ERoundingMode DecimalFormat::getRoundingMode() {
- return fRoundingMode;
- }
-
- /**
- * Set the rounding mode. This has no effect unless the rounding
- * increment is greater than zero.
- * @param roundingMode A rounding mode
- * @see #setRoundingIncrement
- * @see #getRoundingIncrement
- * @see #getRoundingMode
- */
- void DecimalFormat::setRoundingMode(ERoundingMode roundingMode) {
- fRoundingMode = roundingMode;
- }
-
- /**
- * Get the width to which the output of <code>format()</code> is padded.
- * @return the format width, or zero if no padding is in effect
- * @see #setFormatWidth
- * @see #getPadCharacter
- * @see #setPadCharacter
- * @see #getPadPosition
- * @see #setPadPosition
- */
- int32_t DecimalFormat::getFormatWidth() {
- return fFormatWidth;
- }
-
- /**
- * Set the width to which the output of <code>format()</code> is padded.
- * This method also controls whether padding is enabled.
- * @param width the width to which to pad the result of
- * <code>format()</code>, or zero to disable padding. A negative
- * width is equivalent to 0.
- * @see #getFormatWidth
- * @see #getPadCharacter
- * @see #setPadCharacter
- * @see #getPadPosition
- * @see #setPadPosition
- */
- void DecimalFormat::setFormatWidth(int32_t width) {
- fFormatWidth = (width > 0) ? width : 0;
- }
-
- /**
- * Get the character used to pad to the format width. The default is ' '.
- * @return the pad character
- * @see #setFormatWidth
- * @see #getFormatWidth
- * @see #setPadCharacter
- * @see #getPadPosition
- * @see #setPadPosition
- */
- UChar DecimalFormat::getPadCharacter() {
- return fPad;
- }
-
- /**
- * Set the character used to pad to the format width. This has no effect
- * unless padding is enabled.
- * @param padChar the pad character
- * @see #setFormatWidth
- * @see #getFormatWidth
- * @see #getPadCharacter
- * @see #getPadPosition
- * @see #setPadPosition
- */
- void DecimalFormat::setPadCharacter(UChar padChar) {
- fPad = padChar;
- }
-
- /**
- * Get the position at which padding will take place. This is the location
- * at which padding will be inserted if the result of <code>format()</code>
- * is shorter than the format width.
- * @return the pad position, one of <code>kPadBeforePrefix</code>,
- * <code>kPadAfterPrefix</code>, <code>kPadBeforeSuffix</code>, or
- * <code>kPadAfterSuffix</code>.
- * @see #setFormatWidth
- * @see #getFormatWidth
- * @see #setPadCharacter
- * @see #getPadCharacter
- * @see #setPadPosition
- * @see #kPadBeforePrefix
- * @see #kPadAfterPrefix
- * @see #kPadBeforeSuffix
- * @see #kPadAfterSuffix
- */
- DecimalFormat::EPadPosition DecimalFormat::getPadPosition() {
- return fPadPosition;
- }
-
- /**
- * <strong><font face=helvetica color=red>NEW</font></strong>
- * Set the position at which padding will take place. This is the location
- * at which padding will be inserted if the result of <code>format()</code>
- * is shorter than the format width. This has no effect unless padding is
- * enabled.
- * @param padPos the pad position, one of <code>kPadBeforePrefix</code>,
- * <code>kPadAfterPrefix</code>, <code>kPadBeforeSuffix</code>, or
- * <code>kPadAfterSuffix</code>.
- * @see #setFormatWidth
- * @see #getFormatWidth
- * @see #setPadCharacter
- * @see #getPadCharacter
- * @see #getPadPosition
- * @see #kPadBeforePrefix
- * @see #kPadAfterPrefix
- * @see #kPadBeforeSuffix
- * @see #kPadAfterSuffix
- */
- void DecimalFormat::setPadPosition(EPadPosition padPos) {
- fPadPosition = padPos;
- }
-
- /**
- * Return whether or not scientific notation is used.
- * @return TRUE if this object formats and parses scientific notation
- * @see #setScientificNotation
- * @see #getMinimumExponentDigits
- * @see #setMinimumExponentDigits
- * @see #isExponentSignAlwaysShown
- * @see #setExponentSignAlwaysShown
- */
- bool_t DecimalFormat::isScientificNotation() {
- return fUseExponentialNotation;
- }
-
- /**
- * Set whether or not scientific notation is used.
- * @param useScientific TRUE if this object formats and parses scientific
- * notation
- * @see #isScientificNotation
- * @see #getMinimumExponentDigits
- * @see #setMinimumExponentDigits
- * @see #isExponentSignAlwaysShown
- * @see #setExponentSignAlwaysShown
- */
- void DecimalFormat::setScientificNotation(bool_t useScientific) {
- fUseExponentialNotation = useScientific;
- if (fUseExponentialNotation && fMinExponentDigits < 1) {
- fMinExponentDigits = 1;
- }
- }
-
- /**
- * Return the minimum exponent digits that will be shown.
- * @return the minimum exponent digits that will be shown
- * @see #setScientificNotation
- * @see #isScientificNotation
- * @see #setMinimumExponentDigits
- * @see #isExponentSignAlwaysShown
- * @see #setExponentSignAlwaysShown
- */
- int8_t DecimalFormat::getMinimumExponentDigits() {
- return fMinExponentDigits;
- }
-
- /**
- * Set the minimum exponent digits that will be shown. This has no
- * effect unless scientific notation is in use.
- * @param minExpDig a value >= 1 indicating the fewest exponent digits
- * that will be shown. Values less than 1 will be treated as 1.
- * @see #setScientificNotation
- * @see #isScientificNotation
- * @see #getMinimumExponentDigits
- * @see #isExponentSignAlwaysShown
- * @see #setExponentSignAlwaysShown
- */
- void DecimalFormat::setMinimumExponentDigits(int8_t minExpDig) {
- fMinExponentDigits = (minExpDig > 0) ? minExpDig : 1;
- }
-
- /**
- * Return whether the exponent sign is always shown.
- * @return TRUE if the exponent is always prefixed with either the
- * localized minus sign or the localized plus sign, false if only negative
- * exponents are prefixed with the localized minus sign.
- * @see #setScientificNotation
- * @see #isScientificNotation
- * @see #setMinimumExponentDigits
- * @see #getMinimumExponentDigits
- * @see #setExponentSignAlwaysShown
- */
- bool_t DecimalFormat::isExponentSignAlwaysShown() {
- return fExponentSignAlwaysShown;
- }
-
- /**
- * Set whether the exponent sign is always shown. This has no effect
- * unless scientific notation is in use.
- * @param expSignAlways TRUE if the exponent is always prefixed with either
- * the localized minus sign or the localized plus sign, false if only
- * negative exponents are prefixed with the localized minus sign.
- * @see #setScientificNotation
- * @see #isScientificNotation
- * @see #setMinimumExponentDigits
- * @see #getMinimumExponentDigits
- * @see #isExponentSignAlwaysShown
- */
- void DecimalFormat::setExponentSignAlwaysShown(bool_t expSignAlways) {
- fExponentSignAlwaysShown = expSignAlways;
- }
-
- //------------------------------------------------------------------------------
- // Gets the grouping size of the number pattern. For example, thousand or 10
- // thousand groupings.
-
- int32_t
- DecimalFormat::getGroupingSize() const
- {
- return fGroupingSize;
- }
-
- //------------------------------------------------------------------------------
- // Gets the grouping size of the number pattern.
-
- void
- DecimalFormat::setGroupingSize(int32_t newValue)
- {
- fGroupingSize = newValue;
- }
-
- //------------------------------------------------------------------------------
- // Checks if to show the decimal separator.
-
- bool_t
- DecimalFormat::isDecimalSeparatorAlwaysShown() const
- {
- return fDecimalSeparatorAlwaysShown;
- }
-
- //------------------------------------------------------------------------------
- // Sets to always show the decimal separator.
-
- void
- DecimalFormat::setDecimalSeparatorAlwaysShown(bool_t newValue)
- {
- fDecimalSeparatorAlwaysShown = newValue;
- }
-
- //------------------------------------------------------------------------------
- // Emits the pattern of this DecimalFormat instance.
-
- UnicodeString&
- DecimalFormat::toPattern(UnicodeString& result) const
- {
- return toPattern(result, FALSE);
- }
-
- //------------------------------------------------------------------------------
- // Emits the localized pattern this DecimalFormat instance.
-
- UnicodeString&
- DecimalFormat::toLocalizedPattern(UnicodeString& result) const
- {
- return toPattern(result, TRUE);
- }
-
- //------------------------------------------------------------------------------
- /**
- * Expand the affix pattern strings into the expanded affix strings. If any
- * affix pattern string is null, do not expand it. This method should be
- * called any time the symbols or the affix patterns change in order to keep
- * the expanded affix strings up to date.
- */
- void DecimalFormat::expandAffixes() {
- if (fPosPrefixPattern != 0) {
- expandAffix(*fPosPrefixPattern, fPositivePrefix);
- }
- if (fPosSuffixPattern != 0) {
- expandAffix(*fPosSuffixPattern, fPositiveSuffix);
- }
- if (fNegPrefixPattern != 0) {
- expandAffix(*fNegPrefixPattern, fNegativePrefix);
- }
- if (fNegSuffixPattern != 0) {
- expandAffix(*fNegSuffixPattern, fNegativeSuffix);
- }
- #ifdef DEBUG
- UnicodeString s;
- s.append("[")
- .append(*fPosPrefixPattern).append("|").append(*fPosSuffixPattern)
- .append(";") .append(*fNegPrefixPattern).append("|").append(*fNegSuffixPattern)
- .append("]->[")
- .append(fPositivePrefix).append("|").append(fPositiveSuffix)
- .append(";") .append(fNegativePrefix).append("|").append(fNegativeSuffix)
- .append("]\n");
- debugout(s);
- #endif
- }
-
- /**
- * Expand an affix pattern into an affix string. All characters in the
- * pattern are literal unless prefixed by kQuote. The following characters
- * after kQuote are recognized: PATTERN_PERCENT, PATTERN_PER_MILLE,
- * PATTERN_MINUS, and kCurrencySign. If kCurrencySign is doubled (kQuote +
- * kCurrencySign + kCurrencySign), it is interpreted as an international
- * currency sign. Any other character after a kQuote represents itself.
- * kQuote must be followed by another character; kQuote may not occur by
- * itself at the end of the pattern.
- *
- * @param pattern the non-null, fPossibly empty pattern
- * @param affix string to receive the expanded equivalent of pattern
- */
- void DecimalFormat::expandAffix(const UnicodeString& pattern,
- UnicodeString& affix) const {
- affix.remove();
- for (int i=0; i<pattern.size(); ) {
- UChar c = pattern.charAt(i++);
- if (c == kQuote) {
- c = pattern.charAt(i++);
- switch (c) {
- case kCurrencySign:
- {
- UnicodeString s;
- if (i<pattern.size() &&
- pattern.charAt(i) == kCurrencySign) {
- ++i;
- affix += fSymbols->getInternationalCurrencySymbol(s);
- } else {
- affix += fSymbols->getCurrencySymbol(s);
- }
- }
- continue;
- case kPatternPercent:
- c = fSymbols->getPercent();
- break;
- case kPatternPerMill:
- c = fSymbols->getPerMill();
- break;
- case kPatternPlus:
- c = fSymbols->getPlusSign();
- break;
- case kPatternMinus:
- c = fSymbols->getMinusSign();
- break;
- }
- }
- affix.append(c);
- }
- }
-
- /**
- * Appends an affix pattern to the given StringBuffer, quoting special
- * characters as needed. Uses the internal affix pattern, if that exists,
- * or the literal affix, if the internal affix pattern is null. The
- * appended string will generate the same affix pattern (or literal affix)
- * when passed to toPattern().
- *
- * @param buffer the affix string is appended to this
- * @param affixPattern a pattern such as fPosPrefixPattern; may be null
- * @param expAffix a corresponding expanded affix, such as fPositivePrefix.
- * Ignored unless affixPattern is null. If affixPattern is null, then
- * expAffix is appended as a literal affix.
- * @param localized true if the appended pattern should contain localized
- * pattern characters; otherwise, non-localized pattern chars are appended
- */
- void DecimalFormat::appendAffix(UnicodeString& buffer,
- const UnicodeString* affixPattern,
- const UnicodeString& expAffix,
- bool_t localized) const {
- if (affixPattern == 0) {
- appendAffix(buffer, expAffix, localized);
- } else {
- int i;
- for (int pos=0; pos<affixPattern->size(); pos=i) {
- i = affixPattern->indexOf(kQuote, pos);
- if (i < 0) {
- UnicodeString s;
- affixPattern->extractBetween(pos, affixPattern->size(), s);
- appendAffix(buffer, s, localized);
- break;
- }
- if (i > pos) {
- UnicodeString s;
- affixPattern->extractBetween(pos, i, s);
- appendAffix(buffer, s, localized);
- }
- UChar c = affixPattern->charAt(++i);
- ++i;
- if (c == kQuote) {
- buffer.append(c);
- // Fall through and append another kQuote below
- } else if (c == kCurrencySign &&
- i<affixPattern->size() &&
- affixPattern->charAt(i) == kCurrencySign) {
- ++i;
- buffer.append(c);
- // Fall through and append another kCurrencySign below
- } else if (localized) {
- switch (c) {
- case kPatternPercent:
- c = fSymbols->getPercent();
- break;
- case kPatternPerMill:
- c = fSymbols->getPerMill();
- break;
- case kPatternPlus:
- c = fSymbols->getPlusSign();
- break;
- case kPatternMinus:
- c = fSymbols->getMinusSign();
- break;
- }
- }
- buffer.append(c);
- }
- }
- }
-
- /**
- * Append an affix to the given StringBuffer, using quotes if
- * there are special characters. Single quotes themselves must be
- * escaped in either case.
- */
- void
- DecimalFormat::appendAffix( UnicodeString& buffer,
- const UnicodeString& affix,
- bool_t localized) const {
- bool_t needQuote;
- if(localized) {
- needQuote = affix.indexOf(fSymbols->getZeroDigit()) >= 0
- || affix.indexOf(fSymbols->getGroupingSeparator()) >= 0
- || affix.indexOf(fSymbols->getDecimalSeparator()) >= 0
- || affix.indexOf(fSymbols->getPercent()) >= 0
- || affix.indexOf(fSymbols->getPerMill()) >= 0
- || affix.indexOf(fSymbols->getDigit()) >= 0
- || affix.indexOf(fSymbols->getPatternSeparator()) >= 0
- || affix.indexOf(fSymbols->getPlusSign()) >= 0
- || affix.indexOf(fSymbols->getMinusSign()) >= 0
- || affix.indexOf(kCurrencySign) >= 0;
- }
- else {
- needQuote = affix.indexOf(kPatternZeroDigit) >= 0
- || affix.indexOf(kPatternGroupingSeparator) >= 0
- || affix.indexOf(kPatternDecimalSeparator) >= 0
- || affix.indexOf(kPatternPercent) >= 0
- || affix.indexOf(kPatternPerMill) >= 0
- || affix.indexOf(kPatternDigit) >= 0
- || affix.indexOf(kPatternSeparator) >= 0
- || affix.indexOf(kPatternExponent) >= 0
- || affix.indexOf(kPatternPlus) >= 0
- || affix.indexOf(kPatternMinus) >= 0
- || affix.indexOf(kCurrencySign) >= 0;
- }
- if (needQuote)
- buffer += 0x0027 /*'\''*/;
- if (affix.indexOf(0x0027 /*'\''*/) < 0)
- buffer += affix;
- else {
- for (int32_t j = 0; j < affix.size(); ++j) {
- UChar c = affix[j];
- buffer += c;
- if (c == 0x0027 /*'\''*/) buffer += c;
- }
- }
- if (needQuote) buffer += 0x0027 /*'\''*/;
- }
-
- //------------------------------------------------------------------------------
-
- /* Tell the VC++ compiler not to spew out the warnings about integral size conversion */
- #ifdef _WIN32
- #pragma warning( disable : 4761 )
- #endif
-
- UnicodeString&
- DecimalFormat::toPattern(UnicodeString& result, bool_t localized) const
- {
- result.remove();
- UChar zero = localized ? fSymbols->getZeroDigit() : kPatternZeroDigit;
- UChar digit = localized ? fSymbols->getDigit() : kPatternDigit;
- UChar group = localized ? fSymbols->getGroupingSeparator()
- : kPatternGroupingSeparator;
- int32_t i;
- int32_t roundingDecimalPos = 0; // Pos of decimal in roundingDigits
- UnicodeString roundingDigits;
- int32_t padPos = (fFormatWidth > 0) ? fPadPosition : -1;
- UnicodeString padSpec;
- if(fFormatWidth > 0) {
- padSpec.append(localized ? fSymbols->getPadEscape() : kPatternPadEscape).
- append(fPad);
- }
- if(fRoundingIncrement != NULL) {
- for(i=0; i<fRoundingIncrement->fCount; ++i) {
- roundingDigits.append(fRoundingIncrement->fDigits[i]);
- }
- roundingDecimalPos = fRoundingIncrement->fDecimalAt;
- }
- for (int32_t part=0; part<2; ++part) {
- int32_t partStart = result.length();
- if (padPos == kPadBeforePrefix) {
- result.append(padSpec);
- }
- appendAffix(result,
- (part==0 ? fPosPrefixPattern : fNegPrefixPattern),
- (part==0 ? fPositivePrefix : fNegativePrefix),
- localized);
- if (padPos == kPadAfterPrefix && ! padSpec.empty()) {
- result.append(padSpec);
- }
- int32_t sub0Start = result.length();
- int32_t maxIntDig = fUseExponentialNotation ? getMaximumIntegerDigits() :
- (icu_max(icu_max(fGroupingSize, getMinimumIntegerDigits()),
- roundingDecimalPos) + 1);
- for (i = maxIntDig; i > 0; --i) {
- if (isGroupingUsed() && fGroupingSize != 0
- && i % fGroupingSize == 0
- && i < maxIntDig
- && !fUseExponentialNotation) {
- result.append(group);
- }
- if (! roundingDigits.empty()) {
- int32_t pos = roundingDecimalPos - i;
- if (pos >= 0 && pos < roundingDigits.length()) {
- result.append((UChar) (roundingDigits.charAt(pos) - kPatternZeroDigit + zero));
- continue;
- }
- }
- result.append(i<=getMinimumIntegerDigits() ? zero : digit);
- }
- if (getMaximumFractionDigits() > 0 || fDecimalSeparatorAlwaysShown) {
- result.append(localized ? fSymbols->getDecimalSeparator() :
- kPatternDecimalSeparator);
- }
- int32_t pos = roundingDecimalPos;
- for (i = 0; i < getMaximumFractionDigits(); ++i) {
- if (! roundingDigits.empty() &&
- pos < roundingDigits.length()) {
- result.append(pos < 0 ? zero :
- (UChar) (roundingDigits.charAt(pos) - kPatternZeroDigit + zero));
- ++pos;
- continue;
- }
- result.append(i<getMinimumFractionDigits() ? zero : digit);
- }
- if (fUseExponentialNotation) {
- result.append(localized ? fSymbols->getExponentialSymbol() :
- kPatternExponent);
- if (fExponentSignAlwaysShown) {
- result.append(localized ? fSymbols->getPlusSign() :
- kPatternPlus);
- }
- for (i=0; i<fMinExponentDigits; ++i) {
- result.append(zero);
- }
- }
- if (! padSpec.empty() && !fUseExponentialNotation) {
- int32_t add = fFormatWidth - result.length() + sub0Start
- - ((part == 0)
- ? fPositivePrefix.length() + fPositiveSuffix.length()
- : fNegativePrefix.length() + fNegativeSuffix.length());
- while (add > 0) {
- result.insert(sub0Start, digit);
- --add;
- if (isGroupingUsed() && fGroupingSize != 0
- && ++maxIntDig % fGroupingSize == 0
- && add > 1) {
- result.insert(sub0Start, group);
- --add;
- }
- }
- }
- if (fPadPosition == kPadBeforeSuffix && ! padSpec.empty()) {
- result.append(padSpec);
- }
- if (part == 0) {
- appendAffix(result, fPosSuffixPattern, fPositiveSuffix, localized);
- if (fPadPosition == kPadAfterSuffix && ! padSpec.empty()) {
- result.append(padSpec);
- }
- bool_t isDefault = FALSE;
- if ((fNegSuffixPattern == fPosSuffixPattern && // both null
- fNegativeSuffix == fPositiveSuffix)
- || (fNegSuffixPattern != 0 && fPosSuffixPattern != 0 &&
- *fNegSuffixPattern == *fPosSuffixPattern)) {
- if (fNegPrefixPattern != NULL && fPosPrefixPattern != NULL) {
- int32_t length = fPosPrefixPattern->length();
- isDefault = fNegPrefixPattern->length() == (length+2) &&
- (*fNegPrefixPattern)[(UTextOffset)0] == kQuote &&
- (*fNegPrefixPattern)[(UTextOffset)1] == kPatternMinus &&
- fNegPrefixPattern->compare(2, length, *fPosPrefixPattern, 0, length) == 0;
- }
- if (!isDefault &&
- fNegPrefixPattern == NULL && fPosPrefixPattern == NULL) {
- int32_t length = fPositivePrefix.length();
- isDefault = fNegativePrefix.length() == (length+1) &&
- fNegativePrefix[(UTextOffset)0] == fSymbols->getMinusSign() &&
- fNegativePrefix.compare(1, length, fPositivePrefix, 0, length) == 0;
- }
- }
- if (isDefault) {
- break; // Don't output default negative subpattern
- } else {
- result.append(localized ? fSymbols->getPatternSeparator() :
- kPatternSeparator);
- }
- } else {
- appendAffix(result, fNegSuffixPattern, fNegativeSuffix, localized);
- if (fPadPosition == kPadAfterSuffix && ! padSpec.empty()) {
- result.append(padSpec);
- }
- }
- }
-
- return result;
- }
-
- //------------------------------------------------------------------------------
-
- void
- DecimalFormat::applyPattern(const UnicodeString& pattern, UErrorCode& status)
- {
- applyPattern(pattern, FALSE, status);
- }
-
- //------------------------------------------------------------------------------
-
- void
- DecimalFormat::applyLocalizedPattern(const UnicodeString& pattern, UErrorCode& status)
- {
- applyPattern(pattern, TRUE, status);
- }
-
- //------------------------------------------------------------------------------
-
- void
- DecimalFormat::applyPattern(const UnicodeString& pattern,
- bool_t localized,
- UErrorCode& status)
- {
- if (U_FAILURE(status)) return;
- // Set the significant pattern symbols
- UChar zeroDigit = kPatternZeroDigit;
- UChar groupingSeparator = kPatternGroupingSeparator;
- UChar decimalSeparator = kPatternDecimalSeparator;
- UChar percent = kPatternPercent;
- UChar perMill = kPatternPerMill;
- UChar digit = kPatternDigit;
- UChar separator = kPatternSeparator;
- UChar exponent = kPatternExponent;
- UChar plus = kPatternPlus;
- UChar minus = kPatternMinus;
- UChar padEscape = kPatternPadEscape;
- // Substitute with the localized symbols if necessary
- if (localized) {
- zeroDigit = fSymbols->getZeroDigit();
- groupingSeparator = fSymbols->getGroupingSeparator();
- decimalSeparator = fSymbols->getDecimalSeparator();
- percent = fSymbols->getPercent();
- perMill = fSymbols->getPerMill();
- digit = fSymbols->getDigit();
- separator = fSymbols->getPatternSeparator();
- exponent = fSymbols->getExponentialSymbol();
- plus = fSymbols->getPlusSign();
- minus = fSymbols->getMinusSign();
- padEscape = fSymbols->getPadEscape();
- }
- UChar nineDigit = zeroDigit + 9;
-
- int32_t pos = 0;
- // Part 0 is the positive pattern. Part 1, if present, is the negative
- // pattern.
- for (int32_t part=0; part<2 && pos<pattern.length(); ++part) {
- // The subpart ranges from 0 to 4: 0=pattern proper, 1=prefix,
- // 2=suffix, 3=prefix in quote, 4=suffix in quote. Subpart 0 is
- // between the prefix and suffix, and consists of pattern
- // characters. In the prefix and suffix, percent, perMill, and
- // currency symbols are recognized and translated.
- int32_t subpart = 1, sub0Start = 0, sub0Limit = 0, sub2Limit = 0;
-
- // It's important that we don't change any fields of this object
- // prematurely. We set the following variables for the multiplier,
- // grouping, etc., and then only change the actual object fields if
- // everything parses correctly. This also lets us register
- // the data from part 0 and ignore the part 1, except for the
- // prefix and suffix.
- UnicodeString prefix;
- UnicodeString suffix;
- int32_t decimalPos = -1;
- int32_t multiplier = 1;
- int32_t digitLeftCount = 0, zeroDigitCount = 0, digitRightCount = 0;
- int8_t groupingCount = -1;
- int32_t padPos = -1;
- UChar padChar = 0;
- int32_t roundingPos = -1;
- DigitList roundingInc;
- int8_t expDigits = -1;
- bool_t expSignAlways = FALSE;
- bool_t isCurrency = FALSE;
-
- // The affix is either the prefix or the suffix.
- UnicodeString* affix = &prefix;
-
- int32_t start = pos;
- bool_t isPartDone = FALSE;
-
- for (; !isPartDone && pos < pattern.size(); ++pos) {
- UChar ch = pattern[(UTextOffset) pos];
- switch (subpart) {
- case 0: // Pattern proper subpart (between prefix & suffix)
- // Process the digits, decimal, and grouping characters. We
- // record five pieces of information. We expect the digits
- // to occur in the pattern ####00.00####, and we record the
- // number of left digits, zero (central) digits, and right
- // digits. The position of the last grouping character is
- // recorded (should be somewhere within the first two blocks
- // of characters), as is the position of the decimal point,
- // if any (should be in the zero digits). If there is no
- // decimal point, then there should be no right digits.
- if (ch == digit) {
- if (zeroDigitCount > 0) {
- ++digitRightCount;
- } else {
- ++digitLeftCount;
- }
- if (groupingCount >= 0 && decimalPos < 0) {
- ++groupingCount;
- }
- } else if (ch >= zeroDigit && ch <= nineDigit) {
- if (digitRightCount > 0) {
- // Unexpected '0'
- debug("Unexpected '0'")
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return;
- }
- ++zeroDigitCount;
- if (groupingCount >= 0 && decimalPos < 0) {
- ++groupingCount;
- }
- if (ch != zeroDigit && roundingPos < 0) {
- roundingPos = digitLeftCount + zeroDigitCount;
- }
- if (roundingPos >= 0) {
- roundingInc.append((char)(ch - zeroDigit + '0'));
- }
- } else if (ch == groupingSeparator) {
- if (decimalPos >= 0) {
- // Grouping separator after decimal
- debug("Grouping separator after decimal")
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return;
- }
- groupingCount = 0;
- } else if (ch == decimalSeparator) {
- if (decimalPos >= 0) {
- // Multiple decimal separators
- debug("Multiple decimal separators")
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return;
- }
- // Intentionally incorporate the digitRightCount,
- // even though it is illegal for this to be > 0
- // at this point. We check pattern syntax below.
- decimalPos = digitLeftCount + zeroDigitCount + digitRightCount;
- } else {
- if (ch == exponent) {
- if (expDigits >= 0) {
- // Multiple exponential symbols
- debug("Multiple exponential symbols")
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return;
- }
- if (groupingCount >= 0) {
- // Grouping separator in exponential pattern
- debug("Grouping separator in exponential pattern")
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return;
- }
- // Check for positive prefix
- if ((pos+1) < pattern.size()
- && pattern[(UTextOffset) (pos+1)] == plus) {
- expSignAlways = TRUE;
- ++pos;
- }
- // Use lookahead to parse out the exponential part of the
- // pattern, then jump into suffix subpart.
- expDigits = 0;
- while (++pos < pattern.size() &&
- pattern[(UTextOffset) pos] == zeroDigit) {
- ++expDigits;
- }
-
- if ((digitLeftCount + zeroDigitCount) < 1 ||
- expDigits < 1) {
- // Malformed exponential pattern
- debug("Malformed exponential pattern")
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return;
- }
- }
- // Transition to suffix subpart
- subpart = 2; // suffix subpart
- affix = &suffix;
- sub0Limit = pos--;
- continue;
- }
- break;
- case 1: // Prefix subpart
- case 2: // Suffix subpart
- // Process the prefix / suffix characters
- // Process unquoted characters seen in prefix or suffix
- // subpart.
- if (ch == digit ||
- ch == groupingSeparator ||
- ch == decimalSeparator ||
- (ch >= zeroDigit && ch <= nineDigit)) {
- // Any of these characters implicitly begins the
- // next subpart if we are in the prefix
- if (subpart == 1) { // prefix subpart
- subpart = 0; // pattern proper subpart
- sub0Start = pos--; // Reprocess this character
- continue;
- }
- // Fall through to append(ch)
- } else if (ch == kCurrencySign) {
- // Use lookahead to determine if the currency sign is
- // doubled or not.
- bool_t doubled = (pos + 1) < pattern.size() &&
- pattern[(UTextOffset) (pos+1)] == kCurrencySign;
- affix->append(kQuote); // Encode currency
- if (doubled) {
- affix->append(kCurrencySign);
- ++pos; // Skip over the doubled character
- }
- isCurrency = TRUE;
- // Fall through to append(ch)
- } else if (ch == kQuote) {
- // A quote outside quotes indicates either the opening
- // quote or two quotes, which is a quote literal. That is,
- // we have the first quote in 'do' or o''clock.
- if ((pos+1) < pattern.size() &&
- pattern[(UTextOffset) (pos+1)] == kQuote) {
- ++pos;
- affix->append(kQuote); // Encode quote
- // Fall through to append(ch)
- } else {
- subpart += 2; // open quote
- continue;
- }
- } else if (ch == separator) {
- // Don't allow separators in the prefix, and don't allow
- // separators in the second pattern (part == 1).
- if (subpart == 1 || part == 1) {
- // Unexpected separator
- debug("Unexpected separator")
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return;
- }
- sub2Limit = pos;
- isPartDone = TRUE; // Go to next part
- break;
- } else if (ch == percent || ch == perMill) {
- // Next handle characters which are appended directly.
- if (multiplier != 1) {
- // Too many percent/perMill characters
- debug("Too many percent/perMill characters")
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return;
- }
- affix->append(kQuote); // Encode percent/perMill
- if (ch == percent) {
- multiplier = 100;
- ch = kPatternPercent; // Use unlocalized pattern char
- } else {
- multiplier = 1000;
- ch = kPatternPerMill; // Use unlocalized pattern char
- }
- // Fall through to append(ch)
- } else if (ch == padEscape) {
- if (padPos >= 0 || // Multiple pad specifiers
- (pos+1) == pattern.size()) { // Nothing after padEscape
- debug("Multiple pad specifiers")
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return;
- }
- padPos = pos;
- padChar = pattern[(UTextOffset) ++pos];
- continue;
- } else if (ch == minus) {
- affix->append(kQuote); // Encode minus
- ch = kPatternMinus;
- // Fall through to append(ch)
- } else if (ch == plus) {
- affix->append(kQuote); // Encode plus
- ch = kPatternPlus;
- // Fall through to append(ch)
- }
- // Unquoted, non-special characters fall through to here, as
- // well as other code which needs to append something to the
- // affix.
- affix->append(ch);
- break;
- case 3: // Prefix subpart, in quote
- case 4: // Suffix subpart, in quote
- // A quote within quotes indicates either the closing
- // quote or two quotes, which is a quote literal. That is,
- // we have the second quote in 'do' or 'don''t'.
- if (ch == kQuote) {
- if ((pos+1) < pattern.size() &&
- pattern[(UTextOffset) (pos+1)] == kQuote) {
- ++pos;
- affix->append(kQuote); // Encode quote
- // Fall through to append(ch)
- } else {
- subpart -= 2; // close quote
- continue;
- }
- }
- affix->append(ch);
- break;
- }
- }
-
- if (sub0Limit == 0) {
- sub0Limit = pattern.size();
- }
-
- if (sub2Limit == 0) {
- sub2Limit = pattern.size();
- }
-
- /* Handle patterns with no '0' pattern character. These patterns
- * are legal, but must be recodified to make sense. "##.###" ->
- * "#0.###". ".###" -> ".0##".
- *
- * We allow patterns of the form "####" to produce a zeroDigitCount
- * of zero (got that?); although this seems like it might make it
- * possible for format() to produce empty strings, format() checks
- * for this condition and outputs a zero digit in this situation.
- * Having a zeroDigitCount of zero yields a minimum integer digits
- * of zero, which allows proper round-trip patterns. We don't want
- * "#" to become "#0" when toPattern() is called (even though that's
- * what it really is, semantically).
- */
- if (zeroDigitCount == 0 && digitLeftCount > 0 && decimalPos >= 0) {
- // Handle "###.###" and "###." and ".###"
- int n = decimalPos;
- if (n == 0) ++n; // Handle ".###"
- digitRightCount = digitLeftCount - n;
- digitLeftCount = n - 1;
- zeroDigitCount = 1;
- }
-
- // Do syntax checking on the digits, decimal points, and quotes.
- if ((decimalPos < 0 && digitRightCount > 0) ||
- (decimalPos >= 0 &&
- (decimalPos < digitLeftCount ||
- decimalPos > (digitLeftCount + zeroDigitCount))) ||
- groupingCount == 0 ||
- subpart > 2) { // subpart > 2 == unmatched quote
- debug("Syntax error")
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return;
- }
-
- // Make sure pad is at legal position before or after affix.
- if (padPos >= 0) {
- if (padPos == start) {
- padPos = kPadBeforePrefix;
- } else if (padPos+2 == sub0Start) {
- padPos = kPadAfterPrefix;
- } else if (padPos == sub0Limit) {
- padPos = kPadBeforeSuffix;
- } else if (padPos+2 == sub2Limit) {
- padPos = kPadAfterSuffix;
- } else {
- // Illegal pad position
- debug("Illegal pad position")
- status = U_ILLEGAL_ARGUMENT_ERROR;
- return;
- }
- }
-
- if (part == 0) {
- delete fPosPrefixPattern;
- delete fPosSuffixPattern;
- delete fNegPrefixPattern;
- delete fNegSuffixPattern;
- fPosPrefixPattern = new UnicodeString(prefix);
- fPosSuffixPattern = new UnicodeString(suffix);
- fNegPrefixPattern = 0;
- fNegSuffixPattern = 0;
-
- fUseExponentialNotation = (expDigits >= 0);
- if (fUseExponentialNotation) {
- fMinExponentDigits = expDigits;
- fExponentSignAlwaysShown = expSignAlways;
- }
- fIsCurrencyFormat = isCurrency;
- int digitTotalCount = digitLeftCount + zeroDigitCount + digitRightCount;
- // The effectiveDecimalPos is the position the decimal is at or
- // would be at if there is no decimal. Note that if
- // decimalPos<0, then digitTotalCount == digitLeftCount +
- // zeroDigitCount.
- int effectiveDecimalPos = decimalPos >= 0 ? decimalPos : digitTotalCount;
- setMinimumIntegerDigits(effectiveDecimalPos - digitLeftCount);
- setMaximumIntegerDigits(fUseExponentialNotation
- ? digitLeftCount + getMinimumIntegerDigits()
- : kDoubleIntegerDigits);
- setMaximumFractionDigits(decimalPos >= 0
- ? (digitTotalCount - decimalPos) : 0);
- setMinimumFractionDigits(decimalPos >= 0
- ? (digitLeftCount + zeroDigitCount - decimalPos) : 0);
- setGroupingUsed(groupingCount > 0);
- fGroupingSize = (groupingCount > 0) ? groupingCount : 0;
- fMultiplier = multiplier;
- setDecimalSeparatorAlwaysShown(decimalPos == 0
- || decimalPos == digitTotalCount);
- if (padPos >= 0) {
- fPadPosition = (EPadPosition) padPos;
- // To compute the format width, first set up sub0Limit -
- // sub0Start. Add in prefix/suffix length later.
-
- // fFormatWidth = prefix.length() + suffix.length() +
- // sub0Limit - sub0Start;
- fFormatWidth = sub0Limit - sub0Start;
- fPad = padChar;
- } else {
- fFormatWidth = 0;
- }
- if (roundingPos >= 0) {
- roundingInc.fDecimalAt = effectiveDecimalPos - roundingPos;
- if (fRoundingIncrement != NULL) {
- *fRoundingIncrement = roundingInc;
- } else {
- fRoundingIncrement = new DigitList(roundingInc);
- }
- fRoundingDouble = fRoundingIncrement->getDouble();
- fRoundingMode = kRoundHalfEven;
- } else {
- setRoundingIncrement(0.0);
- }
- } else {
- fNegPrefixPattern = new UnicodeString(prefix);
- fNegSuffixPattern = new UnicodeString(suffix);
- }
- }
-
- if (pattern.size() == 0) {
- delete fNegPrefixPattern;
- delete fNegSuffixPattern;
- fNegPrefixPattern = NULL;
- fNegSuffixPattern = NULL;
- if (fPosPrefixPattern != NULL) {
- fPosPrefixPattern->remove();
- } else {
- fPosPrefixPattern = new UnicodeString();
- }
- if (fPosSuffixPattern != NULL) {
- fPosSuffixPattern->remove();
- } else {
- fPosSuffixPattern = new UnicodeString();
- }
-
- setMinimumIntegerDigits(0);
- setMaximumIntegerDigits(kDoubleIntegerDigits);
- setMinimumFractionDigits(0);
- setMaximumFractionDigits(kDoubleFractionDigits);
-
- fUseExponentialNotation = FALSE;
- fIsCurrencyFormat = FALSE;
- setGroupingUsed(FALSE);
- fGroupingSize = 0;
- fMultiplier = 1;
- setDecimalSeparatorAlwaysShown(FALSE);
- fFormatWidth = 0;
- setRoundingIncrement(0.0);
- }
-
- // If there was no negative pattern, or if the negative pattern is
- // identical to the positive pattern, then prepend the minus sign to the
- // positive pattern to form the negative pattern.
- if (fNegPrefixPattern == NULL ||
- (*fNegPrefixPattern == *fPosPrefixPattern
- && *fNegSuffixPattern == *fPosSuffixPattern)) {
- _copy_us_ptr(&fNegSuffixPattern, fPosSuffixPattern);
- if (fNegPrefixPattern == NULL) {
- fNegPrefixPattern = new UnicodeString();
- } else {
- fNegPrefixPattern->remove();
- }
- fNegPrefixPattern->append(kQuote).append(kPatternMinus)
- .append(*fPosPrefixPattern);
- }
- #ifdef DEBUG
- UnicodeString s;
- s.append("\"").append(pattern).append("\"->");
- debugout(s);
- #endif
- expandAffixes();
- if (fFormatWidth > 0) {
- // Finish computing format width (see above)
- fFormatWidth += fPositivePrefix.length() + fPositiveSuffix.length();
- }
- }
-
- /**
- * Sets the maximum number of digits allowed in the integer portion of a
- * number. This override limits the integer digit count to 309.
- * @see NumberFormat#setMaximumIntegerDigits
- */
- void DecimalFormat::setMaximumIntegerDigits(int32_t newValue) {
- NumberFormat::setMaximumIntegerDigits(icu_min(newValue, kDoubleIntegerDigits));
- }
-
- /**
- * Sets the minimum number of digits allowed in the integer portion of a
- * number. This override limits the integer digit count to 309.
- * @see NumberFormat#setMinimumIntegerDigits
- */
- void DecimalFormat::setMinimumIntegerDigits(int32_t newValue) {
- NumberFormat::setMinimumIntegerDigits(icu_min(newValue, kDoubleIntegerDigits));
- }
-
- /**
- * Sets the maximum number of digits allowed in the fraction portion of a
- * number. This override limits the fraction digit count to 340.
- * @see NumberFormat#setMaximumFractionDigits
- */
- void DecimalFormat::setMaximumFractionDigits(int32_t newValue) {
- NumberFormat::setMaximumFractionDigits(icu_min(newValue, kDoubleFractionDigits));
- }
-
- /**
- * Sets the minimum number of digits allowed in the fraction portion of a
- * number. This override limits the fraction digit count to 340.
- * @see NumberFormat#setMinimumFractionDigits
- */
- void DecimalFormat::setMinimumFractionDigits(int32_t newValue) {
- NumberFormat::setMinimumFractionDigits(icu_min(newValue, kDoubleFractionDigits));
- }
-
- //eof
-