720 lines
20 KiB
C++
720 lines
20 KiB
C++
/*
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*******************************************************************************
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* Copyright (C) 1997-2003, 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 CHOICFMT.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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* 03/20/97 helena Finished first cut of implementation and got rid
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* of nextDouble/previousDouble and replaced with
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* boolean array.
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* 4/10/97 aliu Clean up. Modified to work on AIX.
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* 06/04/97 helena Fixed applyPattern(), toPattern() and not to include
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* wchar.h.
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* 07/09/97 helena Made ParsePosition into a class.
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* 08/06/97 nos removed overloaded constructor, fixed 'format(array)'
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* 07/22/98 stephen JDK 1.2 Sync - removed UBool array (doubleFlags)
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* 02/22/99 stephen Removed character literals for EBCDIC safety
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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/choicfmt.h"
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#include "unicode/numfmt.h"
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#include "unicode/locid.h"
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#include "cpputils.h"
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#include "ustrfmt.h"
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// *****************************************************************************
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// class ChoiceFormat
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// *****************************************************************************
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U_NAMESPACE_BEGIN
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(ChoiceFormat)
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// Special characters used by ChoiceFormat. There are two characters
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// used interchangeably to indicate <=. Either is parsed, but only
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// LESS_EQUAL is generated by toPattern().
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#define SINGLE_QUOTE ((UChar)0x0027) /*'*/
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#define LESS_THAN ((UChar)0x003C) /*<*/
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#define LESS_EQUAL ((UChar)0x0023) /*#*/
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#define LESS_EQUAL2 ((UChar)0x2264)
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#define VERTICAL_BAR ((UChar)0x007C) /*|*/
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#define MINUS ((UChar)0x002D) /*-*/
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#define INFINITY ((UChar)0x221E)
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static const UChar gPositiveInfinity[] = {INFINITY, 0};
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static const UChar gNegativeInfinity[] = {MINUS, INFINITY, 0};
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#define POSITIVE_INF_STRLEN 1
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#define NEGATIVE_INF_STRLEN 2
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// -------------------------------------
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// Creates a ChoiceFormat instance based on the pattern.
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ChoiceFormat::ChoiceFormat(const UnicodeString& newPattern,
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UErrorCode& status)
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: fChoiceLimits(0),
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fClosures(0),
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fChoiceFormats(0),
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fCount(0)
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{
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applyPattern(newPattern, status);
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}
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// -------------------------------------
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// Creates a ChoiceFormat instance with the limit array and
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// format strings for each limit.
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ChoiceFormat::ChoiceFormat(const double* limits,
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const UnicodeString* formats,
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int32_t cnt )
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: fChoiceLimits(0),
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fClosures(0),
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fChoiceFormats(0),
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fCount(0)
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{
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setChoices(limits, formats, cnt );
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}
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// -------------------------------------
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ChoiceFormat::ChoiceFormat(const double* limits,
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const UBool* closures,
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const UnicodeString* formats,
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int32_t cnt )
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: fChoiceLimits(0),
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fClosures(0),
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fChoiceFormats(0),
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fCount(0)
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{
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setChoices(limits, closures, formats, cnt );
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}
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// -------------------------------------
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// copy constructor
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ChoiceFormat::ChoiceFormat(const ChoiceFormat& that)
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: NumberFormat(that),
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fChoiceLimits(0),
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fClosures(0),
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fChoiceFormats(0)
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{
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*this = that;
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}
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// -------------------------------------
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// Private constructor that creates a
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// ChoiceFormat instance based on the
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// pattern and populates UParseError
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ChoiceFormat::ChoiceFormat(const UnicodeString& newPattern,
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UParseError& parseError,
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UErrorCode& status)
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: fChoiceLimits(0),
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fClosures(0),
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fChoiceFormats(0),
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fCount(0)
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{
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applyPattern(newPattern,parseError, status);
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}
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// -------------------------------------
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UBool
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ChoiceFormat::operator==(const Format& that) const
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{
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if (this == &that) return TRUE;
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if (this->getDynamicClassID() != that.getDynamicClassID()) return FALSE; // not the same class
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if (!NumberFormat::operator==(that)) return FALSE;
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ChoiceFormat& thatAlias = (ChoiceFormat&)that;
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if (fCount != thatAlias.fCount) return FALSE;
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// Checks the limits, the corresponding format string and LE or LT flags.
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// LE means less than and equal to, LT means less than.
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for (int32_t i = 0; i < fCount; i++) {
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if ((fChoiceLimits[i] != thatAlias.fChoiceLimits[i]) ||
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(fClosures[i] != thatAlias.fClosures[i]) ||
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(fChoiceFormats[i] != thatAlias.fChoiceFormats[i]))
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return FALSE;
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}
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return TRUE;
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}
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// -------------------------------------
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// copy constructor
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const ChoiceFormat&
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ChoiceFormat::operator=(const ChoiceFormat& that)
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{
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if (this != &that) {
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NumberFormat::operator=(that);
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fCount = that.fCount;
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uprv_free(fChoiceLimits);
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fChoiceLimits = NULL;
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uprv_free(fClosures);
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fClosures = NULL;
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delete [] fChoiceFormats;
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fChoiceFormats = NULL;
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fChoiceLimits = (double*) uprv_malloc( sizeof(double) * fCount);
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fClosures = (UBool*) uprv_malloc( sizeof(UBool) * fCount);
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fChoiceFormats = new UnicodeString[fCount];
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uprv_arrayCopy(that.fChoiceLimits, fChoiceLimits, fCount);
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uprv_arrayCopy(that.fClosures, fClosures, fCount);
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uprv_arrayCopy(that.fChoiceFormats, fChoiceFormats, fCount);
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}
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return *this;
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}
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// -------------------------------------
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ChoiceFormat::~ChoiceFormat()
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{
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uprv_free(fChoiceLimits);
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fChoiceLimits = NULL;
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uprv_free(fClosures);
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fClosures = NULL;
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delete [] fChoiceFormats;
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fChoiceFormats = NULL;
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fCount = 0;
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}
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/**
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* Convert a string to a double value
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*/
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double
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ChoiceFormat::stod(const UnicodeString& string)
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{
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char source[256];
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char* end;
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string.extract(0, string.length(), source, sizeof(source), ""); /* invariant codepage */
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return uprv_strtod(source,&end);
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}
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// -------------------------------------
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/**
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* Convert a double value to a string
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*/
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UnicodeString&
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ChoiceFormat::dtos(double value,
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UnicodeString& string)
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{
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char temp[256];
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uprv_dtostr(value, temp, 3, TRUE);
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string = UnicodeString(temp, ""); /* invariant codepage */
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return string;
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}
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// -------------------------------------
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// calls the overloaded applyPattern method.
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void
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ChoiceFormat::applyPattern(const UnicodeString& pattern,
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UErrorCode& status)
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{
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UParseError parseError;
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applyPattern(pattern, parseError, status);
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}
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// -------------------------------------
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// Applies the pattern to this ChoiceFormat instance.
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void
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ChoiceFormat::applyPattern(const UnicodeString& pattern,
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UParseError& parseError,
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UErrorCode& status)
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{
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if (U_FAILURE(status))
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{
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return;
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}
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// Clear error struct
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parseError.offset = -1;
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parseError.preContext[0] = parseError.postContext[0] = (UChar)0;
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// Perform 2 passes. The first computes the number of limits in
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// this pattern (fCount), which is 1 more than the number of
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// literal VERTICAL_BAR characters.
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int32_t count = 1;
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int32_t i;
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for (i=0; i<pattern.length(); ++i) {
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UChar c = pattern[i];
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if (c == SINGLE_QUOTE) {
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// Skip over the entire quote, including embedded
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// contiguous pairs of SINGLE_QUOTE.
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for (;;) {
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do {
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++i;
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} while (i<pattern.length() &&
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pattern[i] != SINGLE_QUOTE);
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if ((i+1)<pattern.length() &&
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pattern[i+1] == SINGLE_QUOTE) {
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// SINGLE_QUOTE pair; skip over it
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++i;
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} else {
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break;
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}
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}
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} else if (c == VERTICAL_BAR) {
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++count;
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}
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}
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// Allocate the required storage.
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double *newLimits = (double*) uprv_malloc( sizeof(double) * count);
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/* test for NULL */
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if (newLimits == 0) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return;
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}
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UBool *newClosures = (UBool*) uprv_malloc( sizeof(UBool) * count);
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/* test for NULL */
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if (newClosures == 0) {
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status = U_MEMORY_ALLOCATION_ERROR;
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uprv_free(newLimits);
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return;
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}
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UnicodeString *newFormats = new UnicodeString[count];
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/* test for NULL */
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if (newFormats == 0) {
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status = U_MEMORY_ALLOCATION_ERROR;
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uprv_free(newLimits);
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uprv_free(newClosures);
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return;
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}
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// Perform the second pass
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int32_t k = 0; // index into newXxx[] arrays
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UnicodeString buf; // scratch buffer
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UBool inQuote = FALSE;
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UBool inNumber = TRUE; // TRUE before < or #, FALSE after
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for (i=0; i<pattern.length(); ++i) {
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UChar c = pattern[i];
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if (c == SINGLE_QUOTE) {
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// Check for SINGLE_QUOTE pair indicating a literal quote
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if ((i+1) < pattern.length() &&
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pattern[i+1] == SINGLE_QUOTE) {
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buf += SINGLE_QUOTE;
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++i;
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} else {
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inQuote = !inQuote;
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}
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} else if (inQuote) {
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buf += c;
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} else if (c == LESS_THAN || c == LESS_EQUAL || c == LESS_EQUAL2) {
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if (!inNumber || buf.length() == 0) {
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goto error;
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}
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inNumber = FALSE;
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double limit;
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buf.trim();
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if (!buf.compare(gPositiveInfinity, POSITIVE_INF_STRLEN)) {
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limit = uprv_getInfinity();
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} else if (!buf.compare(gNegativeInfinity, NEGATIVE_INF_STRLEN)) {
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limit = -uprv_getInfinity();
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} else {
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limit = stod(buf);
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}
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if (k == count) {
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// This shouldn't happen. If it does, it means that
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// the count determined in the first pass did not
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// match the number of elements found in the second
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// pass.
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goto error;
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}
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newLimits[k] = limit;
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newClosures[k] = (c == LESS_THAN);
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if (k > 0 && limit <= newLimits[k-1]) {
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// Each limit must be strictly > than the previous
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// limit. One exception: Two subsequent limits may be
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// == if the first closure is FALSE and the second
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// closure is TRUE. This places the limit value in
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// the second interval.
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if (!(limit == newLimits[k-1] &&
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!newClosures[k-1] &&
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newClosures[k])) {
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goto error;
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}
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}
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buf.truncate(0);
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} else if (c == VERTICAL_BAR) {
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if (inNumber) {
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goto error;
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}
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inNumber = TRUE;
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newFormats[k] = buf;
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++k;
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buf.truncate(0);
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} else {
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buf += c;
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}
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}
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if (k != (count-1) || inNumber || inQuote) {
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goto error;
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}
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newFormats[k] = buf;
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// Don't modify this object until the parse succeeds
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uprv_free(fChoiceLimits);
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uprv_free(fClosures);
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delete[] fChoiceFormats;
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fCount = count;
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fChoiceLimits = newLimits;
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fClosures = newClosures;
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fChoiceFormats = newFormats;
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return;
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error:
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status = U_ILLEGAL_ARGUMENT_ERROR;
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syntaxError(pattern,i,parseError);
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uprv_free(newLimits);
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uprv_free(newClosures);
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delete[] newFormats;
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return;
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}
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// -------------------------------------
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// Reconstruct the original input pattern.
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UnicodeString&
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ChoiceFormat::toPattern(UnicodeString& result) const
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{
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result.remove();
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for (int32_t i = 0; i < fCount; ++i) {
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if (i != 0) {
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result += VERTICAL_BAR;
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}
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UnicodeString buf;
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if (uprv_isPositiveInfinity(fChoiceLimits[i])) {
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result += INFINITY;
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} else if (uprv_isNegativeInfinity(fChoiceLimits[i])) {
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result += MINUS;
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result += INFINITY;
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} else {
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result += dtos(fChoiceLimits[i], buf);
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}
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if (fClosures[i]) {
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result += LESS_THAN;
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} else {
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result += LESS_EQUAL;
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}
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// Append fChoiceFormats[i], using quotes if there are special
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// characters. Single quotes themselves must be escaped in
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// either case.
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const UnicodeString& text = fChoiceFormats[i];
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UBool needQuote = text.indexOf(LESS_THAN) >= 0
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|| text.indexOf(LESS_EQUAL) >= 0
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|| text.indexOf(LESS_EQUAL2) >= 0
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|| text.indexOf(VERTICAL_BAR) >= 0;
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if (needQuote) {
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result += SINGLE_QUOTE;
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}
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if (text.indexOf(SINGLE_QUOTE) < 0) {
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result += text;
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}
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else {
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for (int32_t j = 0; j < text.length(); ++j) {
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UChar c = text[j];
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result += c;
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if (c == SINGLE_QUOTE) {
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result += c;
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}
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}
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}
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if (needQuote) {
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result += SINGLE_QUOTE;
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}
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}
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return result;
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}
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#ifdef U_USE_CHOICE_FORMAT_DEPRECATES
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// -------------------------------------
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// Adopts the limit and format arrays.
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void
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ChoiceFormat::adoptChoices(double *limits,
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UnicodeString *formats,
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int32_t cnt )
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{
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adoptChoices(limits, (UBool *)0, formats, cnt);
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}
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// -------------------------------------
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// Adopts the limit and format arrays.
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void
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ChoiceFormat::adoptChoices(double *limits,
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UBool *closures,
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UnicodeString *formats,
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int32_t cnt )
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{
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if(limits == 0 || formats == 0)
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return;
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uprv_free(fChoiceLimits);
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uprv_free(fClosures);
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delete [] fChoiceFormats;
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fChoiceLimits = limits;
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fClosures = closures;
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fChoiceFormats = formats;
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fCount = cnt;
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if (fClosures == 0) {
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fClosures = (UBool*) uprv_malloc( sizeof(UBool) * fCount);
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int32_t i;
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for (i=0; i<fCount; ++i) {
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fClosures[i] = FALSE;
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}
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}
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}
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#endif
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// -------------------------------------
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// Sets the limit and format arrays.
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void
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ChoiceFormat::setChoices( const double* limits,
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const UnicodeString* formats,
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int32_t cnt )
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{
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setChoices(limits, 0, formats, cnt);
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}
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// -------------------------------------
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// Sets the limit and format arrays.
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void
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ChoiceFormat::setChoices( const double* limits,
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const UBool* closures,
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const UnicodeString* formats,
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int32_t cnt )
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{
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if(limits == 0 || formats == 0)
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return;
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uprv_free(fChoiceLimits);
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uprv_free(fClosures);
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delete [] fChoiceFormats;
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// Note that the old arrays are deleted and this owns
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// the created array.
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fCount = cnt;
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fChoiceLimits = (double*) uprv_malloc( sizeof(double) * fCount);
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fClosures = (UBool*) uprv_malloc( sizeof(UBool) * fCount);
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fChoiceFormats = new UnicodeString[fCount];
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uprv_arrayCopy(limits, fChoiceLimits, fCount);
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uprv_arrayCopy(formats, fChoiceFormats, fCount);
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if (closures != 0) {
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uprv_arrayCopy(closures, fClosures, fCount);
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} else {
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int32_t i;
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for (i=0; i<fCount; ++i) {
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fClosures[i] = FALSE;
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}
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}
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}
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// -------------------------------------
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// Gets the limit array.
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const double*
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ChoiceFormat::getLimits(int32_t& cnt) const
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{
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cnt = fCount;
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return fChoiceLimits;
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}
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// -------------------------------------
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// Gets the closures array.
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const UBool*
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ChoiceFormat::getClosures(int32_t& cnt) const
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{
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cnt = fCount;
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return fClosures;
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}
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// -------------------------------------
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// Gets the format array.
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const UnicodeString*
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ChoiceFormat::getFormats(int32_t& cnt) const
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{
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cnt = fCount;
|
|
return fChoiceFormats;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Formats an int64 number, it's actually formatted as
|
|
// a double. The returned format string may differ
|
|
// from the input number because of this.
|
|
|
|
UnicodeString&
|
|
ChoiceFormat::format(int64_t number,
|
|
UnicodeString& appendTo,
|
|
FieldPosition& status) const
|
|
{
|
|
return format((double) number, appendTo, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Formats a long number, it's actually formatted as
|
|
// a double. The returned format string may differ
|
|
// from the input number because of this.
|
|
|
|
UnicodeString&
|
|
ChoiceFormat::format(int32_t number,
|
|
UnicodeString& appendTo,
|
|
FieldPosition& status) const
|
|
{
|
|
return format((double) number, appendTo, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Formats a double number.
|
|
|
|
UnicodeString&
|
|
ChoiceFormat::format(double number,
|
|
UnicodeString& appendTo,
|
|
FieldPosition& /*pos*/) const
|
|
{
|
|
// find the number
|
|
int32_t i;
|
|
for (i = 0; i < fCount; ++i) {
|
|
if (fClosures[i]) {
|
|
if (!(number > fChoiceLimits[i])) {
|
|
// same as number <= fChoiceLimits, except catches NaN
|
|
break;
|
|
}
|
|
} else if (!(number >= fChoiceLimits[i])) {
|
|
// same as number < fChoiceLimits, except catches NaN
|
|
break;
|
|
}
|
|
}
|
|
--i;
|
|
if (i < 0) {
|
|
i = 0;
|
|
}
|
|
// return either a formatted number, or a string
|
|
appendTo += fChoiceFormats[i];
|
|
return appendTo;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Formats an array of objects. Checks if the data type of the objects
|
|
// to get the right value for formatting.
|
|
|
|
UnicodeString&
|
|
ChoiceFormat::format(const Formattable* objs,
|
|
int32_t cnt,
|
|
UnicodeString& appendTo,
|
|
FieldPosition& pos,
|
|
UErrorCode& status) const
|
|
{
|
|
if(cnt < 0) {
|
|
status = U_ILLEGAL_ARGUMENT_ERROR;
|
|
return appendTo;
|
|
}
|
|
|
|
UnicodeString buffer;
|
|
for (int32_t i = 0; i < cnt; i++) {
|
|
double objDouble = (objs[i].getType() == Formattable::kLong) ?
|
|
((double) objs[i].getLong()) : objs[i].getDouble();
|
|
buffer.remove();
|
|
appendTo += format(objDouble, buffer, pos);
|
|
}
|
|
|
|
return appendTo;
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Formats an array of objects. Checks if the data type of the objects
|
|
// to get the right value for formatting.
|
|
|
|
UnicodeString&
|
|
ChoiceFormat::format(const Formattable& obj,
|
|
UnicodeString& appendTo,
|
|
FieldPosition& pos,
|
|
UErrorCode& status) const
|
|
{
|
|
return NumberFormat::format(obj, appendTo, pos, status);
|
|
}
|
|
// -------------------------------------
|
|
|
|
void
|
|
ChoiceFormat::parse(const UnicodeString& text,
|
|
Formattable& result,
|
|
ParsePosition& status) const
|
|
{
|
|
// find the best number (defined as the one with the longest parse)
|
|
int32_t start = status.getIndex();
|
|
int32_t furthest = start;
|
|
double bestNumber = uprv_getNaN();
|
|
double tempNumber = 0.0;
|
|
for (int i = 0; i < fCount; ++i) {
|
|
int32_t len = fChoiceFormats[i].length();
|
|
if (text.compare(start, len, fChoiceFormats[i]) == 0) {
|
|
status.setIndex(start + len);
|
|
tempNumber = fChoiceLimits[i];
|
|
if (status.getIndex() > furthest) {
|
|
furthest = status.getIndex();
|
|
bestNumber = tempNumber;
|
|
if (furthest == text.length())
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
status.setIndex(furthest);
|
|
if (status.getIndex() == start) {
|
|
status.setErrorIndex(furthest);
|
|
}
|
|
result.setDouble(bestNumber);
|
|
}
|
|
|
|
// -------------------------------------
|
|
// Parses the text and return the Formattable object.
|
|
|
|
void
|
|
ChoiceFormat::parse(const UnicodeString& text,
|
|
Formattable& result,
|
|
UErrorCode& status) const
|
|
{
|
|
NumberFormat::parse(text, result, status);
|
|
}
|
|
|
|
// -------------------------------------
|
|
|
|
Format*
|
|
ChoiceFormat::clone() const
|
|
{
|
|
ChoiceFormat *aCopy = new ChoiceFormat(*this);
|
|
return aCopy;
|
|
}
|
|
|
|
U_NAMESPACE_END
|
|
|
|
#endif /* #if !UCONFIG_NO_FORMATTING */
|
|
|
|
//eof
|