private ParsingResult WithResult(params ParsingResult[] Results)
{
var Merge = new ParsingResult()
{
Success = false
};
foreach (var item in Results)
{
Merge.FailResults.AddRange(item.FailResults);
}
return(Merge);
}
private ParsingResult ProcessCommand(CommandDescriptor C, ref List <string> Param)
{
var CR = new ParsingResult()
{
Command = new CommandResult(C.CommandText)
};
string First = Skip(ref Param);
int SwRequired = C.Switches.Where(f => f.Required).Count(),
SwPossible = C.Switches.Count();
int ArgRequired = C.Arguments.Where(f => f.Required).Count(),
ArgPossible = C.Arguments.Count();
int SubCommandFound = 0;
while (!string.IsNullOrEmpty(First))
{
// if test command
if (TestCommand(C.SubCommands, First))
{
// extract and ..
var SC = GetCommand(C.SubCommands, First);
// process subcommand ..
var SCR = ProcessCommand(SC, ref Param);
if (SCR.Success)
{
// subcommand found ...
CR.Command.SubCommand = SCR.Command;
CR.Command.Switches.AddRange(SCR.Switches);
SubCommandFound++;
}
else
{
return(WithResult(CR, SCR));
}
}
else
{
string Switch = First.Before(SwitchArgumentSeperator, First), SwitchValue = First.After(SwitchArgumentSeperator);
if (TestSwitch(C.Switches, Switch))
{
var SW = GetSwitch(C.Switches, Switch);
var SWR = ProcessSwitch(C.Switches, ref Param);
if (SWR.Success)
{
CR.Command.Switches.AddRange(SWR.Switches);
if (SW.Required)
{
SwRequired--;
}
SwPossible--;
}
else
{
return(WithResult(CR, SWR));
}
}
else
{
if (C.SubCommands?.Length > 0)
{
return(WithResult(CR, "subcommand expected"));
}
try
{
var Arg = C.Arguments[CR.Command.Arguments.Count()];
CR.Command.Arguments.Add(new ArgumentResult(Arg.Argument, First));
if (Arg.Required)
{
ArgRequired--;
}
ArgPossible--;
}
catch
{
return(WithResult(CR, "position of argument could not specified"));
}
}
}
First = Skip(ref Param);
}
// final checks
if (C.SubCommands?.Length > 0)
{
if (SubCommandFound == 0)
{
return(WithResult(CR, "subcommand missing"));
}
}
if (SwPossible < 0)
{
return(WithResult(CR, "too many switches"));
}
if (SwRequired > 0)
{
return(WithResult(CR, "required switch missing"));
}
if (ArgPossible < 0)
{
return(WithResult(CR, "too many arguments"));
}
if (ArgRequired > 0)
{
return(WithResult(CR, "required arguments missing"));
}
return(CR);
}
public ParsingResult Parse(string Input)
{
var ParsingResult = new ParsingResult();
// check empty
if (string.IsNullOrWhiteSpace(Input))
{
return(WithResult(ParsingResult, "cli empty, nothing to do"));
}
// skip self, split and merge
var Param = Input.Split(' ').ToList();
var ShrinkResult = ShrinkParams(Param);
if (!ShrinkResult.Success)
{
return(WithResult(ParsingResult, ShrinkResult));
}
RemoveEmptyValues(ref Param);
// parse common switches and remove them from param
if (CliDefinition.Switches != null)
{
var ParseCommonSwitchResult = ParseCommonSwitches(CliDefinition.Switches, ref Param);
if (ParseCommonSwitchResult.Success)
{
ParsingResult.Switches.AddRange(ParseCommonSwitchResult.Switches);
}
else
{
return(WithResult(ParsingResult, ParseCommonSwitchResult));
}
}
if (Param.Count() == 0)
{
return(WithResult(ParsingResult, "nothing to do"));
}
// move through
string First = Param.First(); //IEnumerable<string> Following = Param.Skip(1);
// in command mode, first argument must be a command
if (CliDefinition.Commands != null)
{
if (TestCommand(CliDefinition.Commands, First))
{
var C = GetCommand(CliDefinition.Commands, First);
var CR = ProcessCommand(C, ref Param);
if (CR.Success)
{
ParsingResult.Command = CR.Command;
}
else
{
return(WithResult(ParsingResult, CR));
}
}
else
{
return(WithResult(ParsingResult, "first argument must be a command"));
}
}
if (CliDefinition.Arguments != null)
{
// common switches already extracted .. only arguments remaining .. order required first ..
var Arguments = CliDefinition.Arguments.OrderBy(f => f.Required ? 0 : 1)
.ThenBy(f => f.Position < 0 ? int.MaxValue : f.Position).ToArray();
int ArgRequired = Arguments.Where(f => f.Required).Count(),
ArgPossible = Arguments.Count();
for (int i = 0; i < Param.Count(); i++)
{
ParsingResult.Arguments.Add(new ArgumentResult(Arguments[i].Argument, Param[i]));
if (Arguments[i].Required)
{
ArgRequired--;
}
ArgPossible--;
}
// final checks
if (ArgPossible < 0)
{
return(WithResult(ParsingResult, "too many arguments"));
}
if (ArgRequired > 0)
{
return(WithResult(ParsingResult, "required argument missing"));
}
}
ParsingResult.Success = true;
return(ParsingResult);
}
private ParsingResult ProcessSwitch(SwitchDescriptor[] S, ref List <string> Param)
{
var PR = new ParsingResult();
int SwRequired = S.Where(f => f.Required).Count(),
SwPossible = S.Count();
string First = Param.First();
string Switch = First.Before(SwitchArgumentSeperator, First), SwitchValue = First.After(SwitchArgumentSeperator);
// get switch
var Sw = GetSwitch(S, Switch);
// and validate possible
var SwitchValueResult = ValidateSwitchValue(Sw, SwitchValue);
// if success
if (SwitchValueResult.Success)
{
var SwitchArguments = new List <SwitchArgumentResult>();
var SwResult = new SwitchResult(Sw.SwitchText, Sw.ShortSwitch, Sw.SwitchValueType, SwitchValue);
// remove switch ...
//Param.RemoveAt(0);
// check arguments .. switch arguments are always required
for (int j = 0; j < Sw.SwitchArguments?.Length; j++)
{
First = Skip(ref Param);
if (TestSwitch(S, First.Before(SwitchArgumentSeperator, First)))
{
return(WithResult(PR, "switch argument missing"));
}
else
{
SwitchArguments.Add(new SwitchArgumentResult(Sw.SwitchArguments[j].Argument, First));
}
}
SwResult.SwitchArguments.AddRange(SwitchArguments);
// add to result ..
if (Sw.Required)
{
SwRequired--;
}
SwPossible--;
PR.Switches.Add(SwResult);
}
else
{
return(WithResult(PR, SwitchValueResult));
}
//// final checks
//if (SwPossible < 0)
// return WithResult(PR, "too many switches");
//if (SwRequired > 0)
// return WithResult(PR, "required switch missing");
return(PR);
}