physfs/lzma/CPP/7zip/Common/FilePathAutoRename.cpp

58 lines
1.3 KiB
C++

// FilePathAutoRename.cpp
#include "StdAfx.h"
#include "FilePathAutoRename.h"
#include "Common/Defs.h"
#include "Common/IntToString.h"
#include "Windows/FileName.h"
#include "Windows/FileFind.h"
using namespace NWindows;
static bool MakeAutoName(const UString &name,
const UString &extension, int value, UString &path)
{
wchar_t number[32];
ConvertUInt64ToString(value, number);
path = name;
path += number;
path += extension;
return NFile::NFind::DoesFileExist(path);
}
bool AutoRenamePath(UString &fullProcessedPath)
{
UString path;
int dotPos = fullProcessedPath.ReverseFind(L'.');
int slashPos = fullProcessedPath.ReverseFind(L'/');
#ifdef _WIN32
int slash1Pos = fullProcessedPath.ReverseFind(L'\\');
slashPos = MyMax(slashPos, slash1Pos);
#endif
UString name, extension;
if (dotPos > slashPos && dotPos > 0)
{
name = fullProcessedPath.Left(dotPos);
extension = fullProcessedPath.Mid(dotPos);
}
else
name = fullProcessedPath;
name += L'_';
int indexLeft = 1, indexRight = (1 << 30);
while (indexLeft != indexRight)
{
int indexMid = (indexLeft + indexRight) / 2;
if (MakeAutoName(name, extension, indexMid, path))
indexLeft = indexMid + 1;
else
indexRight = indexMid;
}
if (MakeAutoName(name, extension, indexRight, fullProcessedPath))
return false;
return true;
}