private static string GetFilePathOrNameDetailByOption(string filePathOrName, FilePathComposition returnOpt) //1:fileTitle;2:postfix;3:suffix;
{
int lastIndexOfDot = filePathOrName.LastIndexOf(".");
if (lastIndexOfDot == -1)
{
throw new ArgumentException("Filename must contains separator '.'");
}
string fileTitle = filePathOrName.Substring(0, lastIndexOfDot);
int lastIndexOfDoubleSlash = fileTitle.LastIndexOf("\\");
if (lastIndexOfDoubleSlash != -1)
{
fileTitle = fileTitle.Substring(lastIndexOfDoubleSlash + 1, fileTitle.Length - lastIndexOfDoubleSlash - 1);
}
string suffix = filePathOrName.Substring(lastIndexOfDot + 1, filePathOrName.Length - lastIndexOfDot - 1);
string postfix = "." + suffix;
if (returnOpt == FilePathComposition.FileTitle)
{
return(fileTitle);
}
else if (returnOpt == FilePathComposition.Postfix)
{
return(postfix);
}
else if (returnOpt == FilePathComposition.Suffix)
{
return(suffix);
}
else
{
return(string.Empty);
}
}
public static string GetFileDetailByOption(string path, FilePathComposition returnOpt) //1:dir;2:fileName;
{
int lastIndex = path.LastIndexOf("\\");
var dir = path.Substring(0, lastIndex);
var fileName = path.Substring(lastIndex + 1, path.Length - lastIndex - 1);
if (returnOpt == FilePathComposition.Directory)
{
return(dir); //dir
}
else if (returnOpt == FilePathComposition.FileName)
{
return(fileName); //file name
}
else if (returnOpt == FilePathComposition.FileTitle)
{
if (fileName.Contains('.'))
{
return(GetFilePathOrNameDetailByOption(path, FilePathComposition.FileTitle));
}
else
{
return(fileName);
}
}
else if (returnOpt == FilePathComposition.Postfix)
{
if (fileName.Contains('.'))
{
return(GetFilePathOrNameDetailByOption(path, FilePathComposition.Postfix));
}
else
{
return(string.Empty);
}
}
else if (returnOpt == FilePathComposition.Suffix)
{
;
}
{
if (fileName.Contains('.'))
{
return(GetFilePathOrNameDetailByOption(path, FilePathComposition.Suffix));
}
else
{
return(string.Empty);
}
}
return(string.Empty);
}
