public ArgInfo(FieldInfo fi, GetArgs container, object defaultvalue)
{
this.defaultvalue = defaultvalue;
this.fi = fi;
this.container = container;
object[] att = fi.GetCustomAttributes(typeof(ArgItemAttribute), false);
if (att.Length == 0)
{
options = new ArgItemAttribute();
}
else
{
options = att[0] as ArgItemAttribute;
}
}
/// <summary>
/// Creates an instance of GetArgs
/// </summary>
protected GetArgs()
{
const BindingFlags flags = BindingFlags.DeclaredOnly |
BindingFlags.Public | BindingFlags.Instance;
Type argclass = GetType();
if (re == null)
{
ArgOptionsAttribute aoa = argclass.GetCustomAttributes(typeof(ArgOptionsAttribute), true)[0]
as ArgOptionsAttribute;
casesensitive = aoa.CaseSensitive;
allowshortcut = aoa.AllowShortcut;
seperator = aoa.Seperator;
prefix = aoa.Prefix;
msgbox = aoa.MessageBox;
shortlen = aoa.ShortcutLength;
pauserr = aoa.PauseOnError;
ignoreunknown = aoa.IgnoreUnknownArguments;
re = new Regex(string.Format(@"
(({0} # switch
(?<name>[_A-Za-z][_\w]*) # name (any legal C# name)
({1} # sep + optional space
(((""(?<value>((\\"")|[^""])*)"")| # match a double quoted value (escape "" with \)
('(?<value>((\\')|[^'])*)'))| # match a single quoted value (escape ' with \)
(\{{(?<arrayval>[^\}}]*)\}})| # list value (escaped for string.Format)
(?<value>\S+)) # any single value
)?)| # sep option + list
(((""(?<value>((\\"")|[^""])*)"")| # match a double quoted value (escape "" with \)
('(?<value>((\\')|[^'])*)'))| # match a single quoted value (escape ' with \)
(\{{(?<arrayval>[^\}}]*)\}})| # list value (escaped for string.Format)
(?<value>\S+)))* # any single value" ,
Regex.Escape(prefix),
seperator.Trim() == string.Empty ? @"\s+" : @"\s*" + Regex.Escape(seperator) + @"\s*"
),
RegexOptions.Compiled | RegexOptions.ExplicitCapture | RegexOptions.IgnorePatternWhitespace);
arrre = new Regex(@"\s*(?<value>((\\,)|[^,])+)(\s*,\s*(?<value>((\\,)|[^,])+))*\s*", // escape , with \
RegexOptions.Compiled | RegexOptions.ExplicitCapture);
}
Dictionary <string, ArgInfo> argz = new Dictionary <string, ArgInfo>();
string allargs = Environment.CommandLine;
allargs = allargs.Replace(string.Format(@"""{0}""", Application.ExecutablePath), "").Trim();
if (prefix == string.Empty)
{
throw new ArgumentException("prefix cannot be empty string");
}
if (defvals == null)
{
defvals = this;
string schemafilename = Assembly.GetEntryAssembly().Location + ".args.xsd";
string deffilename = Assembly.GetEntryAssembly().Location + ".args";
if (!File.Exists(schemafilename))
{
using (TextWriter w = File.CreateText(schemafilename))
{
GetSchema(w);
}
}
if (File.Exists(deffilename))
{
using (TextReader deffile = File.OpenText(deffilename))
{
defvals = new XmlSerializer(GetType()).Deserialize(deffile) as GetArgs;
}
}
else
{
using (TextWriter w = File.CreateText(deffilename))
{
StringWriter sw = new StringWriter();
new XmlSerializer(GetType()).Serialize(sw, this);
string all = sw.ToString().Replace(" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"",
string.Empty).Replace(" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"",
string.Empty);
w.WriteLine(all);
}
}
}
else
{
return; //this
}
foreach (FieldInfo fi in argclass.GetFields(flags))
{
object defval = fi.GetValue(defvals);
string n = fi.Name;
if (!casesensitive)
{
n = n.ToLower();
}
fi.SetValue(this, defval);
ArgInfo ai = new ArgInfo(fi, this, defval);
if (ai.Options is DefaultArgAttribute)
{
argz.Add(MAGIC, ai);
}
//be very careful with the next line!
if (!(ai.Options is DefaultArgAttribute) || ((DefaultArgAttribute)ai.Options).AllowName)
{
argz.Add(n, ai);
if (allowshortcut)
{
string sn = ai.Options.Shortname;
if (sn == null)
{
int nlen = n.Length - 1;
if (nlen > 0 && shortlen < n.Length)
{
sn = n.Substring(0, nlen < shortlen ? nlen : shortlen);
if (!argz.ContainsKey(sn))
{
argz.Add(sn, ai);
ai.Options.Shortname = sn;
}
}
}
else
{
if (!argz.ContainsKey(sn))
{
argz.Add(sn, ai);
}
}
}
}
}
defvals = null;
if (allargs.StartsWith(prefix + "?") || allargs.StartsWith(prefix + "help"))
{
PrintHelp(argz);
Environment.Exit(0);
}
Group g = null;
bool haserror = false;
foreach (Match m in re.Matches(allargs))
{
string argname = null;
try
{
if (m.Value == string.Empty)
{
continue;
}
object val = null;
if ((g = m.Groups["name"]).Success)
{
argname = g.Value;
if (!casesensitive)
{
argname = argname.ToLower();
}
}
else
{
argname = MAGIC;
}
ArgInfo arginfo = argz[argname];
if (arginfo == null)
{
if (ignoreunknown)
{
Console.Error.WriteLine("Warning: Ignoring argument unknown '{0}'", argname);
}
else
{
Console.Error.WriteLine("Error: Argument '{0}' not known", argname);
haserror = true;
}
continue;
}
Type t = arginfo.Type;
if (t == null)
{
continue;
}
if (t.IsArray && argname != MAGIC)
{
if ((g = m.Groups["arrayval"]).Success)
{
Type elet = t.GetElementType();
TypeConverter tc = TypeDescriptor.GetConverter(elet);
Match arrm = arrre.Match(g.Value);
if (arrm.Success)
{
Group gg = arrm.Groups["value"];
Array arr = Array.CreateInstance(elet, gg.Captures.Count);
for (int i = 0; i < arr.Length; i++)
{
arr.SetValue(tc.ConvertFromString(gg.Captures[i].Value.Trim()), i);
}
val = arr;
}
}
}
else
{
if ((g = m.Groups["value"]).Success)
{
string v = g.Value;
if (t == typeof(bool) && (v == "on" || v == "off"))
{
val = v == "on";
}
else
{
if (t.IsArray)
{
ArrayList vals = new ArrayList();
if (arginfo.Value != null)
{
vals.AddRange(arginfo.Value as ICollection);
}
TypeConverter tc = TypeDescriptor.GetConverter(t.GetElementType());
vals.Add(tc.ConvertFromString(v));
val = vals.ToArray(typeof(string)) as string[];
}
else
{
TypeConverter tc = TypeDescriptor.GetConverter(t);
val = tc.ConvertFromString(v);
}
}
}
else
{
val = t == typeof(bool);
}
}
arginfo.Value = val;
}
catch (Exception ex)
{
Console.Error.WriteLine("Error: Argument '{0}' could not be read ({1})",
argname, ex.Message, ex.GetBaseException().GetType().Name);
haserror = true;
}
}
if (haserror)
{
PrintHelp(argz);
if (pauserr && !msgbox)
{
Console.WriteLine("Press any key to exit");
Console.Read();
}
Environment.Exit(1);
}
}
