public static Options Parse(string[] args)
{
var options = new Options();
for (int i = 0; i < args.Length; i++)
{
if (args[i] == "-f")
{
options.Force = true;
}
else if (args[i] == "-n")
{
if (i + 1 >= args.Length || args[i + 1].StartsWith("-"))
FailWithUsage();
options.Namespace = args[i + 1];
i++;
}
else if (args[i] == "-o")
{
if (i + 1 >= args.Length || args[i + 1].StartsWith("-"))
FailWithUsage();
options.OutputFile = args[i + 1];
i++;
}
else if (args[i] == "-h" || args[i] == "-?" || args[i] == "/?" || args[i] == "--help")
{
FailWithUsage();
}
else
{
if (!string.IsNullOrWhiteSpace(options.InputFile))
FailWithUsage();
options.InputFile = args[i];
}
}
// check for input file
options.InputFile = Path.GetFullPath(options.InputFile);
if (!File.Exists(options.InputFile))
throw new Exception("File not found: " + options.InputFile);
// namespace
if (string.IsNullOrWhiteSpace(options.Namespace))
{
var dir = Path.GetDirectoryName(options.InputFile);
var idx = dir.LastIndexOf('\\');
if (idx == -1) idx = dir.LastIndexOf('/');
if (idx != -1)
dir = dir.Substring(idx + 1);
options.Namespace = dir;
}
// output
if (string.IsNullOrWhiteSpace(options.OutputFile))
{
const string sfx = ".ironmeta";
var fname = options.InputFile;
if (fname.EndsWith(sfx, StringComparison.InvariantCultureIgnoreCase))
fname = fname.Substring(0, fname.Length - sfx.Length);
options.OutputFile = Path.GetFullPath(fname + ".g.cs");
if (string.IsNullOrWhiteSpace(fname))
throw new Exception("Invalid output file name " + options.OutputFile);
}
return options;
}
