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Code-Statistics/CodeStatistics/ProgramArguments.cs

78 lines
2.6 KiB
C#

using System;
using System.Collections.Generic;
using CodeStatistics.Data;
namespace CodeStatistics{
class ProgramArguments{
public delegate bool ArgumentPredicate(Argument argument, Action<string> setError);
private readonly HashSet<string> flags;
private readonly Dictionary<string, string> variables;
public string Error { get; private set; }
public bool HasError { get { return Error != null; } }
public ProgramArguments(string[] args, ArgumentPredicate argumentValidator){
if (args.Length == 0){
flags = null;
variables = null;
}
else{
flags = new HashSet<string>();
variables = new Dictionary<string, string>(4);
HashSet<string> identifiers = new HashSet<string>();
Action<string> setError = err => Error = err;
for(int index = 0; index < args.Length; index++){
if (args[index][0] == '-' && args.Length > 1){
string name = args[index].Substring(1);
string identifier = name.IndexOf(':') == -1 ? name : name.Substring(0, name.IndexOf(':'));
bool isVariable = index < args.Length-1 && args[index+1][0] != '-';
if (!identifiers.Add(identifier)){
Error = Lang.Get["ErrorInvalidArgsDuplicateIdentifier", identifier];
break;
}
if (!argumentValidator(isVariable ? new Argument(name, args[index+1]) : new Argument(name), setError)){
break;
}
if (isVariable){
variables[name] = args[index+1];
}
else{
flags.Add(name);
}
}
}
}
}
public bool CheckFlag(string name){
return flags != null && flags.Contains(name);
}
public bool HasVariable(string name){
return variables != null && variables.ContainsKey(name);
}
public string GetVariable(string name){
return variables[name];
}
public struct Argument{
public readonly string Name, Value;
public bool IsFlag { get { return Value == null; } }
public Argument(string name, string value = null){
this.Name = name;
this.Value = value;
}
}
}
}