blob: ecb44bb6fced0cead28c423fc330a948d3615d6b [file] [log] [blame] [edit]
/*
******************************************************************************
*
* Copyright (C) 2010, International Business Machines
* Corporation and others. All Rights Reserved.
*
******************************************************************************
*
* File decnumstr.cpp
*
*/
#include "unicode/utypes.h"
#include "decnumstr.h"
#include "cmemory.h"
#include "uassert.h"
U_NAMESPACE_BEGIN
DecimalNumberString::DecimalNumberString() {
fLength = 0;
fText[0] = 0;
}
DecimalNumberString::~DecimalNumberString() {
}
DecimalNumberString::DecimalNumberString(const StringPiece &source, UErrorCode &status) {
fLength = 0;
fText[0] = 0;
append(source, status);
}
DecimalNumberString & DecimalNumberString::append(char c, UErrorCode &status) {
if (ensureCapacity(fLength + 2, status) == FALSE) {
return *this;
}
fText[fLength++] = c;
fText[fLength] = 0;
return *this;
}
DecimalNumberString &DecimalNumberString::append(const StringPiece &str, UErrorCode &status) {
int32_t sLength = str.length();
if (ensureCapacity(fLength + sLength + 1, status) == FALSE) {
return *this;
}
uprv_memcpy(&fText[fLength], str.data(), sLength);
fLength += sLength;
fText[fLength] = 0;
return *this;
}
char & DecimalNumberString::operator [] (int32_t index) {
U_ASSERT(index>=0 && index<fLength);
return fText[index];
}
const char & DecimalNumberString::operator [] (int32_t index) const {
U_ASSERT(index>=0 && index<fLength);
return fText[index];
}
int32_t DecimalNumberString::length() const {
return fLength;
}
void DecimalNumberString::setLength(int32_t length, UErrorCode &status) {
if (ensureCapacity(length+1, status) == FALSE) {
return;
}
if (length > fLength) {
uprv_memset(&fText[fLength], length - fLength, 0);
}
fLength = length;
fText[fLength] = 0;
}
DecimalNumberString::operator StringPiece() const {
return StringPiece(fText, fLength);
}
UBool DecimalNumberString::ensureCapacity(int32_t neededSize, UErrorCode &status) {
if (U_FAILURE(status)) {
return FALSE;
}
if (fText.getCapacity() < neededSize) {
char *newBuf = fText.resize(neededSize, fText.getCapacity());
if (newBuf == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
return FALSE;
}
U_ASSERT(fText.getCapacity() >= neededSize);
U_ASSERT(fText.getAlias() == newBuf);
}
return TRUE;
}
U_NAMESPACE_END