561 lines
14 KiB
C++
561 lines
14 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 FMTABLE.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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* 03/25/97 clhuang Initial Implementation.
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********************************************************************************
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*/
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "unicode/fmtable.h"
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#include "cmemory.h"
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// *****************************************************************************
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// class Formattable
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// *****************************************************************************
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U_NAMESPACE_BEGIN
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(Formattable)
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// -------------------------------------
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// default constructor.
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// Creates a formattable object with a long value 0.
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Formattable::Formattable()
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: UObject(), fType(kLong)
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{
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fValue.fInt64 = 0;
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}
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// -------------------------------------
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// Creates a formattable object with a Date instance.
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Formattable::Formattable(UDate date, ISDATE /*isDate*/)
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: UObject(), fType(kDate)
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{
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fBogus.setToBogus();
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fValue.fDate = date;
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}
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// -------------------------------------
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// Creates a formattable object with a double value.
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Formattable::Formattable(double value)
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: UObject(), fType(kDouble)
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{
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fBogus.setToBogus();
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fValue.fDouble = value;
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}
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// -------------------------------------
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// Creates a formattable object with a long value.
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Formattable::Formattable(int32_t value)
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: UObject(), fType(kLong)
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{
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fBogus.setToBogus();
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fValue.fInt64 = value;
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}
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// -------------------------------------
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// Creates a formattable object with a long value.
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Formattable::Formattable(int64_t value)
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: UObject(), fType(kInt64)
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{
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fBogus.setToBogus();
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fValue.fInt64 = value;
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}
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// -------------------------------------
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// Creates a formattable object with a char* string.
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Formattable::Formattable(const char* stringToCopy)
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: UObject(), fType(kString)
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{
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fBogus.setToBogus();
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fValue.fString = new UnicodeString(stringToCopy);
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}
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// -------------------------------------
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// Creates a formattable object with a UnicodeString instance.
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Formattable::Formattable(const UnicodeString& stringToCopy)
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: UObject(), fType(kString)
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{
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fBogus.setToBogus();
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fValue.fString = new UnicodeString(stringToCopy);
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}
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// -------------------------------------
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// Creates a formattable object with a UnicodeString* value.
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// (adopting symantics)
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Formattable::Formattable(UnicodeString* stringToAdopt)
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: UObject(), fType(kString)
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{
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fBogus.setToBogus();
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fValue.fString = stringToAdopt;
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}
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// -------------------------------------
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Formattable::Formattable(const Formattable* arrayToCopy, int32_t count)
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: UObject(), fType(kArray)
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{
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fBogus.setToBogus();
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fValue.fArrayAndCount.fArray = createArrayCopy(arrayToCopy, count);
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fValue.fArrayAndCount.fCount = count;
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}
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// -------------------------------------
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// copy constructor
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Formattable::Formattable(const Formattable &source)
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: UObject(source), fType(kLong)
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{
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fBogus.setToBogus();
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*this = source;
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}
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// -------------------------------------
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// assignment operator
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Formattable&
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Formattable::operator=(const Formattable& source)
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{
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if (this != &source)
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{
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// Disposes the current formattable value/setting.
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dispose();
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// Sets the correct data type for this value.
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fType = source.fType;
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switch (fType)
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{
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case kArray:
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// Sets each element in the array one by one and records the array count.
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fValue.fArrayAndCount.fCount = source.fValue.fArrayAndCount.fCount;
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fValue.fArrayAndCount.fArray = createArrayCopy(source.fValue.fArrayAndCount.fArray,
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source.fValue.fArrayAndCount.fCount);
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break;
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case kString:
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// Sets the string value.
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fValue.fString = new UnicodeString(*source.fValue.fString);
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break;
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case kDouble:
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// Sets the double value.
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fValue.fDouble = source.fValue.fDouble;
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break;
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case kLong:
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case kInt64:
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// Sets the long value.
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fValue.fInt64 = source.fValue.fInt64;
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break;
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case kDate:
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// Sets the Date value.
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fValue.fDate = source.fValue.fDate;
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break;
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}
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}
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return *this;
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}
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// -------------------------------------
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UBool
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Formattable::operator==(const Formattable& that) const
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{
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// Checks class ID.
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if (this == &that) return TRUE;
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// Returns FALSE if the data types are different.
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if (fType != that.fType) return FALSE;
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// Compares the actual data values.
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switch (fType) {
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case kDate:
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return fValue.fDate == that.fValue.fDate;
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case kDouble:
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return fValue.fDouble == that.fValue.fDouble;
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case kLong:
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case kInt64:
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return fValue.fInt64 == that.fValue.fInt64;
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case kString:
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return *(fValue.fString) == *(that.fValue.fString);
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case kArray:
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if (fValue.fArrayAndCount.fCount != that.fValue.fArrayAndCount.fCount)
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return FALSE;
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// Checks each element for equality.
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for (int32_t i=0; i<fValue.fArrayAndCount.fCount; ++i)
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if (fValue.fArrayAndCount.fArray[i] != that.fValue.fArrayAndCount.fArray[i])
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return FALSE;
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break;
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}
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return TRUE;
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}
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// -------------------------------------
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Formattable::~Formattable()
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{
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dispose();
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}
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// -------------------------------------
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void Formattable::dispose()
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{
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// Deletes the data value if necessary.
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switch (fType) {
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case kString:
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delete fValue.fString;
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break;
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case kArray:
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delete[] fValue.fArrayAndCount.fArray;
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break;
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case kDate:
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case kDouble:
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case kLong:
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case kInt64:
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break;
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}
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}
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Formattable *
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Formattable::clone() const {
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return new Formattable(*this);
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}
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// -------------------------------------
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// Gets the data type of this Formattable object.
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Formattable::Type
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Formattable::getType() const
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{
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return fType;
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}
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// -------------------------------------
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int32_t
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Formattable::getLong(UErrorCode* status) const
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{
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if(U_FAILURE(*status))
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return 0;
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switch (fType) {
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case Formattable::kLong:
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return (int32_t)fValue.fInt64;
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case Formattable::kInt64:
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if (fValue.fInt64 > INT32_MAX) {
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*status = U_INVALID_FORMAT_ERROR;
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return INT32_MAX;
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} else if (fValue.fInt64 < INT32_MIN) {
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*status = U_INVALID_FORMAT_ERROR;
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return INT32_MIN;
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} else {
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return (int32_t)fValue.fInt64;
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}
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case Formattable::kDouble:
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if (fValue.fDouble > INT32_MAX) {
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*status = U_INVALID_FORMAT_ERROR;
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return INT32_MAX;
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} else if (fValue.fDouble < INT32_MIN) {
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*status = U_INVALID_FORMAT_ERROR;
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return INT32_MIN;
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} else {
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return (int32_t)fValue.fDouble;
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}
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default:
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*status = U_INVALID_FORMAT_ERROR;
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return 0;
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}
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}
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// -------------------------------------
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int64_t
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Formattable::getInt64(UErrorCode* status) const
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{
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if(U_FAILURE(*status))
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return 0;
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switch (fType) {
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case Formattable::kLong:
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case Formattable::kInt64:
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return fValue.fInt64;
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case Formattable::kDouble:
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if (fValue.fDouble > U_INT64_MAX) {
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*status = U_INVALID_FORMAT_ERROR;
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return U_INT64_MAX;
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} else if (fValue.fDouble < U_INT64_MIN) {
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*status = U_INVALID_FORMAT_ERROR;
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return U_INT64_MIN;
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} else {
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return (int64_t)fValue.fDouble;
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}
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default:
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*status = U_INVALID_FORMAT_ERROR;
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return 0;
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}
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}
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// -------------------------------------
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double
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Formattable::getDouble(UErrorCode* status) const
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{
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if(U_FAILURE(*status))
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return 0;
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switch (fType) {
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case Formattable::kLong:
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case Formattable::kInt64: // loses precision
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return (double)fValue.fInt64;
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case Formattable::kDouble:
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return fValue.fDouble;
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default:
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*status = U_INVALID_FORMAT_ERROR;
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return 0;
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}
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}
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// -------------------------------------
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// Sets the value to a double value d.
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void
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Formattable::setDouble(double d)
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{
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dispose();
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fType = kDouble;
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fValue.fDouble = d;
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}
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// -------------------------------------
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// Sets the value to a long value l.
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void
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Formattable::setLong(int32_t l)
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{
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dispose();
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fType = kLong;
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fValue.fInt64 = l;
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}
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// -------------------------------------
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// Sets the value to an int64 value ll.
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void
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Formattable::setInt64(int64_t ll)
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{
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dispose();
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fType = kInt64;
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fValue.fInt64 = ll;
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}
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// -------------------------------------
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// Sets the value to a Date instance d.
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void
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Formattable::setDate(UDate d)
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{
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dispose();
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fType = kDate;
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fValue.fDate = d;
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}
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// -------------------------------------
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// Sets the value to a string value stringToCopy.
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void
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Formattable::setString(const UnicodeString& stringToCopy)
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{
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dispose();
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fType = kString;
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fValue.fString = new UnicodeString(stringToCopy);
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}
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// -------------------------------------
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// Sets the value to an array of Formattable objects.
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void
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Formattable::setArray(const Formattable* array, int32_t count)
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{
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dispose();
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fType = kArray;
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fValue.fArrayAndCount.fArray = createArrayCopy(array, count);
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fValue.fArrayAndCount.fCount = count;
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}
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// -------------------------------------
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// Adopts the stringToAdopt value.
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void
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Formattable::adoptString(UnicodeString* stringToAdopt)
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{
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dispose();
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fType = kString;
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fValue.fString = stringToAdopt;
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}
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// -------------------------------------
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// Adopts the array value and its count.
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void
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Formattable::adoptArray(Formattable* array, int32_t count)
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{
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dispose();
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fType = kArray;
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fValue.fArrayAndCount.fArray = array;
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fValue.fArrayAndCount.fCount = count;
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}
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// -------------------------------------
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UnicodeString&
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Formattable::getString(UnicodeString& result, UErrorCode* status) const
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{
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if (status && U_SUCCESS(*status) && fType != kString) {
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*status = U_INVALID_FORMAT_ERROR;
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result.setToBogus();
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} else {
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result = *fValue.fString;
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}
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return result;
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}
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// -------------------------------------
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const UnicodeString&
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Formattable::getString(UErrorCode* status) const
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{
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if (status && U_SUCCESS(*status) && fType != kString) {
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*status = U_INVALID_FORMAT_ERROR;
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return *getBogus();
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}
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return *fValue.fString;
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}
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// -------------------------------------
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UnicodeString&
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Formattable::getString(UErrorCode* status)
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{
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if (status && U_SUCCESS(*status) && fType != kString) {
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*status = U_INVALID_FORMAT_ERROR;
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return *getBogus();
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}
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return *fValue.fString;
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}
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// -------------------------------------
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const Formattable*
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Formattable::getArray(int32_t& count, UErrorCode* status) const
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{
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if (status && U_SUCCESS(*status) && fType != kArray) {
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count = 0;
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*status = U_INVALID_FORMAT_ERROR;
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return NULL;
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}
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count = fValue.fArrayAndCount.fCount;
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return fValue.fArrayAndCount.fArray;
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}
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// -------------------------------------
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// Gets the bogus string, ensures mondo bogosity.
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UnicodeString*
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Formattable::getBogus() const
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{
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return (UnicodeString*)&fBogus; /* cast away const :-( */
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}
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#if 0
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//----------------------------------------------------
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// console I/O
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//----------------------------------------------------
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#ifdef _DEBUG
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#if U_IOSTREAM_SOURCE >= 199711
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#include <iostream>
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using namespace std;
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#elif U_IOSTREAM_SOURCE >= 198506
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#include <iostream.h>
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#endif
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#include "unicode/datefmt.h"
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#include "unistrm.h"
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class FormattableStreamer /* not : public UObject because all methods are static */ {
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public:
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static void streamOut(ostream& stream, const Formattable& obj);
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private:
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FormattableStreamer() {} // private - forbid instantiation
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};
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// This is for debugging purposes only. This will send a displayable
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// form of the Formattable object to the output stream.
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void
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FormattableStreamer::streamOut(ostream& stream, const Formattable& obj)
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{
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static DateFormat *defDateFormat = 0;
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UnicodeString buffer;
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switch(obj.getType()) {
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case Formattable::kDate :
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// Creates a DateFormat instance for formatting the
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// Date instance.
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if (defDateFormat == 0) {
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defDateFormat = DateFormat::createInstance();
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}
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defDateFormat->format(obj.getDate(), buffer);
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stream << buffer;
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break;
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case Formattable::kDouble :
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// Output the double as is.
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stream << obj.getDouble() << 'D';
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break;
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case Formattable::kLong :
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// Output the double as is.
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stream << obj.getLong() << 'L';
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break;
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case Formattable::kString:
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// Output the double as is. Please see UnicodeString console
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// I/O routine for more details.
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stream << '"' << obj.getString(buffer) << '"';
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break;
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case Formattable::kArray:
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int32_t i, count;
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const Formattable* array;
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array = obj.getArray(count);
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stream << '[';
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// Recursively calling the console I/O routine for each element in the array.
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for (i=0; i<count; ++i) {
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FormattableStreamer::streamOut(stream, array[i]);
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stream << ( (i==(count-1)) ? "" : ", " );
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}
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stream << ']';
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break;
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default:
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// Not a recognizable Formattable object.
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stream << "INVALID_Formattable";
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}
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stream.flush();
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}
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#endif
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#endif
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U_NAMESPACE_END
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#endif /* #if !UCONFIG_NO_FORMATTING */
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//eof
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