public string GetLogPath(string customDirectory, string preFile)
{
string newFilePath = string.Empty;
//String logDir = string.IsNullOrEmpty(customDirectory) ? Path.Combine(Environment.CurrentDirectory, "logs") : customDirectory;
String logDir = string.IsNullOrEmpty(customDirectory) ? PathHelper.CombineWithBaseDirectory("logs") : customDirectory;
if (!Directory.Exists(logDir))
{
Directory.CreateDirectory(logDir);
}
string extension = ".log";
string fileNameNotExt = String.Concat(preFile, DateTime.Now.ToString("yyyyMMdd"));
String fileName = String.Concat(fileNameNotExt, extension);
string fileNamePattern = string.Concat(fileNameNotExt, "(*)", extension);
List <string> filePaths = new List <string>(Directory.GetFiles(logDir, fileNamePattern, SearchOption.TopDirectoryOnly));
List <string> correctFilePaths = new List <string>();
if (filePaths.Count > 0)
{
foreach (string fPath in filePaths)
{
string no = new Regex(@"(?is)(?<=\()(.*)(?=\))").Match(Path.GetFileName(fPath)).Value;
int tempno = 0;
if (int.TryParse(no, out tempno))
{
correctFilePaths.Add(fPath);
}
}
}
if (correctFilePaths.Count > 0)
{
correctFilePaths.Sort((x, y) => x.CompareTo(y));
int fileMaxLen = 0;
for (int i = 0; i < correctFilePaths.Count; i++)
{
int itemLength = correctFilePaths[i].Length;
fileMaxLen = itemLength > fileMaxLen ? itemLength : fileMaxLen;
}
string lastFilePath = correctFilePaths.FindLast(d => d.Length == fileMaxLen);
long actualSize = new FileInfo(lastFilePath).Length;
long maxSize = 10 * 1024 * 1024;//(1 * 1024 * 1024 = 1M);
if (actualSize < maxSize)
{
newFilePath = lastFilePath;
}
else
{
string no = new Regex(@"(?is)(?<=\()(.*)(?=\))").Match(Path.GetFileName(lastFilePath)).Value;
int tempno = 0;
bool parse = int.TryParse(no, out tempno);
string formatno = String.Format("({0})", parse ? (tempno + 1) : tempno);
string newFileName = String.Concat(fileNameNotExt, formatno, extension);
newFilePath = Path.Combine(logDir, newFileName);
}
}
else
{
string newFileName = String.Concat(fileNameNotExt, String.Format("({0})", 0), extension);
newFilePath = Path.Combine(logDir, newFileName);
}
return(newFilePath);
}