4.44 beta

CPP/7zip/UI/Console/PercentPrinter.cpp

@@ -0,0 +1,90 @@
+// PercentPrinter.cpp
+
+#include "StdAfx.h"
+
+#include "Common/IntToString.h"
+#include "Common/String.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++ = ' ';
+  strcpy(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();
+}