CommandLineParser.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / Tools / svcutil / CommandLineParser.cs / 1305376 / CommandLineParser.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace Microsoft.Tools.ServiceModel.SvcUtil
{ 
    using System;
    using System.Globalization; 
    using System.Collections.Generic; 
    using System.Text.RegularExpressions;
 
    internal enum SwitchType
    {
        Flag,
        SingletonValue, 
        ValueList
    } 
 
    internal class CommandSwitch
    { 
        readonly string name;
        readonly string abbreviation;
        readonly SwitchType switchType;
 
        internal CommandSwitch(string name, string abbreviation, SwitchType switchType)
        { 
            //ensure that either name doesn't start	with '/' or	'-' 
            //also convert to lower-case
            if ((name[0] == '/') || (name[0] == '-')) 
                this.name = (name.Substring(1)).ToLower(CultureInfo.InvariantCulture);
            else
                this.name = name.ToLower(CultureInfo.InvariantCulture);
            if ((abbreviation[0] == '/') || (abbreviation[0] == '-')) 
                this.abbreviation = (abbreviation.Substring(1)).ToLower(CultureInfo.InvariantCulture);
            else 
                this.abbreviation = abbreviation.ToLower(CultureInfo.InvariantCulture); 

            this.switchType = switchType; 
        }

        internal string Name
        { 
            get { return name; }
        } 
 
#if NotUsed
        internal string Abbreviation 
        {
            get { return abbreviation; }
        }
#endif 

        internal SwitchType SwitchType 
        { 
            get { return switchType; }
        } 

        internal bool Equals(string other)
        {
            string temp; 

            //ensure that compare doesn't start	with '/' or	'-' 
            //also convert to lower-case 
            if ((other[0] == '/') || (other[0] == '-'))
                temp = (other.Substring(1)).ToLower(CultureInfo.InvariantCulture); 
            else
                temp = other.ToLower(CultureInfo.InvariantCulture);

            //if equal to name,	then return	the	OK 
            if (name.Equals(temp))
                return true; 
            //now check	abbreviation 
            return abbreviation.Equals(temp);
        } 

        internal static CommandSwitch FindSwitch(string name, CommandSwitch[] switches)
        {
            foreach (CommandSwitch cs in switches) 
                if (cs.Equals(name))
                    return cs; 
            //if no	match found, then return null 
            return null;
        } 
    }

    internal class ArgumentDictionary
    { 
        Dictionary> contents;
 
        internal ArgumentDictionary(int capacity) 
        {
            contents = new Dictionary>(capacity); 
        }

        internal void Add(string key, string value)
        { 
            IList values;
            if (!ContainsArgument(key)) 
            { 
                values = new List();
                Add(key, values); 
            }
            else
                values = GetArguments(key);
 
            values.Add(value);
        } 
 
        internal string GetArgument(string key)
        { 
            IList values;
            if (contents.TryGetValue(key.ToLower(CultureInfo.InvariantCulture), out values))
            {
#if SM_TOOL 
                Tool.Assert((values.Count == 1), "contains more than one argument please call GetArguments");
#endif 
                return values[0]; 
            }
#if SM_TOOL 
            Tool.Assert(false, "argument was not specified please call ContainsArgument to check this"); ;
#endif

            return null; // unreachable code but the compiler doesn't know this. 
        }
 
        internal IList GetArguments(string key) 
        {
            IList result; 
            if (!contents.TryGetValue(key.ToLower(CultureInfo.InvariantCulture), out result))
                result = new List();
            return result;
        } 

        internal bool ContainsArgument(string key) 
        { 
            return contents.ContainsKey(key.ToLower(CultureInfo.InvariantCulture));
        } 

        internal void Add(string key, IList values)
        {
            contents.Add(key.ToLower(CultureInfo.InvariantCulture), values); 
        }
 
        internal int Count 
        {
            get { return contents.Count; } 
        }

    }
 
    internal static class CommandParser
    { 
 

        internal static ArgumentDictionary ParseCommand(string[] cmd, CommandSwitch[] switches) 
        {
            ArgumentDictionary arguments;	//switches/values from cmd line

            string arg;						//argument to test next 
            CommandSwitch argSwitch;		//switch corresponding to that argument
            string argValue;				 //value corresponding to that argument 
            int delim;						//location of value	delimiter (':' or '=') 

            arguments = new ArgumentDictionary(cmd.Length); 
            foreach (string s in cmd)
            {
                arg = s;
                bool argIsFlag = true; 

                //if argument does not start with switch indicator,	place into "default" arguments 
                if ((arg[0] != '/') && (arg[0] != '-')) 
                {
                    arguments.Add(String.Empty, arg); 
                    continue;
                }

                //if we	have something which begins	with '/' or	'-', throw if nothing after	it 
                if (arg.Length == 1)
                    throw new ArgumentException(SR.GetString(SR.ErrSwitchMissing, arg)); 
 
                //yank switch indicator	('/' or	'-') off of	command	argument
                arg = arg.Substring(1); 

                //check	to make	sure delimiter does	not	start off switch
                delim = arg.IndexOfAny(new char[] { ':', '=' });
                if (delim == 0) 
                    throw new ArgumentException(SR.GetString(SR.ErrUnexpectedDelimiter));
 
                //if there is no value,	than create	a null string 
                if (delim == (-1))
                    argValue = String.Empty; 
                else
                {
                    //assume valid argument	now; must remove value attached	to it
                    //must avoid copying delimeter into	either arguments 
                    argValue = arg.Substring(delim + 1);
                    arg = arg.Substring(0, delim); 
                    argIsFlag = false; 
                }
 
                //check	if this	switch exists in the list of possible switches
                //if no	match found, then throw	an exception
                argSwitch = CommandSwitch.FindSwitch(arg.ToLower(CultureInfo.InvariantCulture), switches);
                if (argSwitch == null) 
                    throw new ArgumentException(SR.GetString(SR.ErrUnknownSwitch, arg.ToLower(CultureInfo.InvariantCulture)));
 
                //check if switch is allowed to have a value 
                // if not and a value has been specified, then thrown an exception
                if (argSwitch.SwitchType == SwitchType.Flag) 
                {
                    if (!argIsFlag)
                        throw new ArgumentException(SR.GetString(SR.ErrUnexpectedValue, arg.ToLower(CultureInfo.InvariantCulture)));
                } 
                else
                { 
                    if (argIsFlag) 
                        throw new ArgumentException(SR.GetString(SR.ErrExpectedValue, arg.ToLower(CultureInfo.InvariantCulture)));
                } 

                //check if switch is allowed to be specified multiple times
                // if not and it has already been specified and a new value has been paresd, throw an exception
                if (argSwitch.SwitchType != SwitchType.ValueList  && arguments.ContainsArgument(argSwitch.Name)) 
                {
                        throw new ArgumentException(SR.GetString(SR.ErrSingleUseSwitch, arg.ToLower(CultureInfo.InvariantCulture))); 
                } 
                else
                { 
                    arguments.Add(argSwitch.Name, argValue);
                }
            }
 
            return arguments;
        } 
 
    }
 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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CommandLineParser.cs source code in C# .NET

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