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// RarVol.h
#ifndef __ARCHIVE_RAR_VOL_H
#define __ARCHIVE_RAR_VOL_H
#include "../../../Common/StringConvert.h"
#include "RarHeader.h"
namespace NArchive {
namespace NRar {
inline bool IsDigit(wchar_t c)
{
return c >= L'0' && c <= L'9';
}
class CVolumeName
{
bool _needChangeForNext;
UString _before;
UString _changed;
UString _after;
public:
CVolumeName(): _needChangeForNext(true) {};
bool InitName(const UString &name, bool newStyle = true)
{
_needChangeForNext = true;
_after.Empty();
UString base = name;
int dotPos = name.ReverseFind_Dot();
if (dotPos >= 0)
{
const UString ext = name.Ptr(dotPos + 1);
if (ext.IsEqualTo_Ascii_NoCase("rar"))
{
_after = name.Ptr(dotPos);
base.DeleteFrom(dotPos);
}
else if (ext.IsEqualTo_Ascii_NoCase("exe"))
{
_after.SetFromAscii(".rar");
base.DeleteFrom(dotPos);
}
else if (!newStyle)
{
if (ext.IsEqualTo_Ascii_NoCase("000") ||
ext.IsEqualTo_Ascii_NoCase("001") ||
ext.IsEqualTo_Ascii_NoCase("r00") ||
ext.IsEqualTo_Ascii_NoCase("r01"))
{
_changed = ext;
_before = name.Left(dotPos + 1);
return true;
}
}
}
if (newStyle)
{
unsigned i = base.Len();
for (; i != 0; i--)
if (!IsDigit(base[i - 1]))
break;
if (i != base.Len())
{
_before = base.Left(i);
_changed = base.Ptr(i);
return true;
}
}
_after.Empty();
_before = base;
_before += L'.';
_changed.SetFromAscii("r00");
_needChangeForNext = false;
return true;
}
/*
void MakeBeforeFirstName()
{
unsigned len = _changed.Len();
_changed.Empty();
for (unsigned i = 0; i < len; i++)
_changed += L'0';
}
*/
UString GetNextName()
{
if (_needChangeForNext)
{
unsigned i = _changed.Len();
if (i == 0)
return UString();
for (;;)
{
wchar_t c = _changed[--i];
if (c == L'9')
{
c = L'0';
_changed.ReplaceOneCharAtPos(i, c);
if (i == 0)
{
_changed.InsertAtFront(L'1');
break;
}
continue;
}
c++;
_changed.ReplaceOneCharAtPos(i, c);
break;
}
}
_needChangeForNext = true;
return _before + _changed + _after;
}
};
}}
#endif
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