PercentPrinter.cpp
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// PercentPrinter.cpp
#include "StdAfx.h"
#include "Common/IntToString.h"
#include "Common/MyString.h"
#include "PercentPrinter.h"
const int kPaddingSize = 2;
const int kPercentsSize = 4;
const int kMaxExtraSize = kPaddingSize + 32 + kPercentsSize;
static void ClearPrev(char *p, int num)
{
int i;
for (i = 0; i < num; i++) *p++ = '\b';
for (i = 0; i < num; i++) *p++ = ' ';
for (i = 0; i < num; i++) *p++ = '\b';
*p = '\0';
}
void CPercentPrinter::ClosePrint()
{
if (m_NumExtraChars == 0)
return;
char s[kMaxExtraSize * 3 + 1];
ClearPrev(s, m_NumExtraChars);
(*OutStream) << s;
m_NumExtraChars = 0;
}
void CPercentPrinter::PrintString(const char *s)
{
ClosePrint();
(*OutStream) << s;
}
void CPercentPrinter::PrintString(const wchar_t *s)
{
ClosePrint();
(*OutStream) << s;
}
void CPercentPrinter::PrintNewLine()
{
ClosePrint();
(*OutStream) << "\n";
}
void CPercentPrinter::RePrintRatio()
{
char s[32];
ConvertUInt64ToString(((m_Total == 0) ? 0 : (m_CurValue * 100 / m_Total)), s);
int size = (int)strlen(s);
s[size++] = '%';
s[size] = '\0';
int extraSize = kPaddingSize + MyMax(size, kPercentsSize);
if (extraSize < m_NumExtraChars)
extraSize = m_NumExtraChars;
char fullString[kMaxExtraSize * 3];
char *p = fullString;
int i;
if (m_NumExtraChars == 0)
{
for (i = 0; i < extraSize; i++)
*p++ = ' ';
m_NumExtraChars = extraSize;
}
for (i = 0; i < m_NumExtraChars; i++)
*p++ = '\b';
m_NumExtraChars = extraSize;
for (; size < m_NumExtraChars; size++)
*p++ = ' ';
MyStringCopy(p, s);
(*OutStream) << fullString;
OutStream->Flush();
m_PrevValue = m_CurValue;
}
void CPercentPrinter::PrintRatio()
{
if (m_CurValue < m_PrevValue + m_MinStepSize &&
m_CurValue + m_MinStepSize > m_PrevValue && m_NumExtraChars != 0)
return;
RePrintRatio();
}