public static string CreateBackupFileNamePattern(string fileName, bool keepExt)
{
if (keepExt)
{
string fileNameWithoutExt;
string ext;
FileRollUtil.GetFileNameAndExt(fileName, out fileNameWithoutExt, out ext);
var escapedFileName = fileNameWithoutExt.Replace(".", "\\.");
if (ext == null)
{
//{fileName}.{yyyyMMdd}.{index}
return($"{escapedFileName}(\\.([0-9]*))?(\\.([0-9]*))?");
}
else
{
//{fileName}.{yyyyMMdd}.{index}.{ext}
return($"{escapedFileName}(\\.([0-9]*))?(\\.([0-9]*))?\\.{ext}");
}
}
else
{
var escapedFileName = fileName.Replace(".", "\\.");
return($"{escapedFileName}(\\.([0-9]*))?(\\.([0-9]*))?");
}
}
protected override string ResolveRollName(IndexedFileInfo m)
{
if (!_keepExt)
{
return(Path.Combine(_dir, $"{_fileName}.{m.index + 1}"));
}
else
{
string baseFileNameWithoutExt, ext;
FileRollUtil.GetFileNameAndExt(_fileName, out baseFileNameWithoutExt, out ext);
var path = Path.Combine(_dir, $"{baseFileNameWithoutExt}.{m.index + 1}");
if (ext != null)
{
path += $".{ext}";
}
return(path);
}
}
public static string GetDatedFileName(string baseFileName, System.DateTime date, int index = 0, bool keepExts = false)
{
var dateStr = date.ToString("yyyyMMdd");
if (!keepExts)
{
if (index == 0)
{
return($"{baseFileName}.{dateStr}");
}
else
{
return($"{baseFileName}.{dateStr}.{index}");
}
}
else
{
string fileNameWithoutExt, ext;
if (FileRollUtil.GetFileNameAndExt(baseFileName, out fileNameWithoutExt, out ext))
{
if (index == 0)
{
return($"{fileNameWithoutExt}.{dateStr}.{ext}");
}
else
{
return($"{fileNameWithoutExt}.{dateStr}.{index}.{ext}");
}
}
else
{
if (index == 0)
{
return($"{baseFileName}.{dateStr}");
}
else
{
return($"{baseFileName}.{dateStr}.{index}");
}
}
}
}
public static string CreateBackupFileNamePattern(string fileName, bool keepExt)
{
string baseFileName;
string ext;
if (keepExt)
{
FileRollUtil.GetFileNameAndExt(fileName, out baseFileName, out ext);
}
else
{
baseFileName = fileName;
ext = null;
}
baseFileName = baseFileName.Replace(".", "\\.");
string pattern = $"({baseFileName})(\\.([0-9]*))?";
if (ext != null)
{
pattern += $"\\.({ext})";
}
return(pattern);
}