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// FilePathAutoRename.cpp
#include "StdAfx.h"
#include "../../Windows/FileFind.h"
#include "FilePathAutoRename.h"
using namespace NWindows;
static bool MakeAutoName(const FString &name,
const FString &extension, UInt32 value, FString &path)
{
path = name;
path.Add_UInt32(value);
path += extension;
return NFile::NFind::DoesFileOrDirExist(path);
}
bool AutoRenamePath(FString &path)
{
const int dotPos = path.ReverseFind_Dot();
const int slashPos = path.ReverseFind_PathSepar();
FString name = path;
FString extension;
if (dotPos > slashPos + 1)
{
name.DeleteFrom((unsigned)dotPos);
extension = path.Ptr((unsigned)dotPos);
}
name.Add_Char('_');
FString temp;
UInt32 left = 1, right = (UInt32)1 << 30;
while (left != right)
{
const UInt32 mid = (left + right) / 2;
if (MakeAutoName(name, extension, mid, temp))
left = mid + 1;
else
right = mid;
}
return !MakeAutoName(name, extension, right, path);
}
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