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// Copyright © Microsoft Corporation.
// This source file is subject to the Microsoft Permissive License.
// See http://www.microsoft.com/resources/sharedsource/licensingbasics/sharedsourcelicenses.mspx.
// All other rights reserved.
using System;
using System.IO;
using System.Collections.Generic;
using System.Collections;
namespace Microsoft.Ddue.Tools.CommandLine {
public sealed class OptionCollection : ICollection < Option >, ICollection, IEnumerable < Option >, IEnumerable {
private Dictionary < string, Option > map = new Dictionary < string, Option >();
private List < Option > options = new List < Option >();
public int Count {
get {
return (options.Count);
}
}
// Extras for ICollection<Option>
bool ICollection < Option >.IsReadOnly {
get {
return (false);
}
}
// Extras for ICollection
bool ICollection.IsSynchronized {
get {
return (false);
}
}
Object ICollection.SyncRoot {
get {
return (this);
}
}
public Option this[string name] {
get {
Option option;
if (map.TryGetValue(name, out option)) {
return (option);
} else {
return (null);
}
}
}
public void Add(Option option) {
if (option == null) throw new ArgumentNullException("option");
map.Add(option.Name, option);
options.Add(option);
}
public void Clear() {
options.Clear();
map.Clear();
}
bool ICollection < Option >.Contains(Option option) {
return (options.Contains(option));
}
void ICollection < Option >.CopyTo(Option[] array, int startIndex) {
options.CopyTo(array, startIndex);
}
void ICollection.CopyTo(Array array, int startIndex) {
((ICollection)options).CopyTo(array, startIndex);
}
// Extras for IEnumerable<Option>
IEnumerator < Option > IEnumerable < Option >.GetEnumerator() {
return (options.GetEnumerator());
}
// Extras for IEnumerable
IEnumerator IEnumerable.GetEnumerator() {
return (options.GetEnumerator());
}
// Parse arguments -- the main show
public ParseArgumentsResult ParseArguments(string[] args) {
// keep track of results
ParseArgumentsResult results = new ParseArgumentsResult();
results.options = this;
// parse arguments
ParseArguments(args, results);
return (results);
}
public bool Remove(Option option) {
int index = options.IndexOf(option);
if (index < 0) return (false);
options.RemoveAt(index);
map.Remove(option.Name);
return (true);
}
// Print help
public void WriteOptionSummary(TextWriter writer) {
if (writer == null) throw new ArgumentNullException("writer");
foreach (Option option in options) {
writer.WriteLine();
option.WriteTemplate(writer);
writer.WriteLine(option.Description);
}
}
private void ParseArguments(string[] args, ParseArgumentsResult results) {
foreach (string arg in args) {
if (arg.Length == 0) continue;
if (arg[0] == '/') {
// option processing
// find the named option
int index = 1;
while (index < arg.Length) {
if ((!Char.IsLetter(arg, index)) && (arg[index] != '?')) break;
index++;
}
string key = arg.Substring(1, index - 1);
string value = arg.Substring(index);
// invoke the appropriate logic
if (map.ContainsKey(key)) {
Option option = (Option)map[key];
ParseResult result = option.ParseArgument(value);
if (result != ParseResult.Success) {
results.errors.Add(arg, result);
}
} else {
results.errors.Add(arg, ParseResult.UnrecognizedOption);
}
} else if (arg[0] == '@') {
string responseFile = arg.Substring(1);
List < string > responses = new List < string >();
using (TextReader reader = File.OpenText(responseFile)) {
while (true) {
string response = reader.ReadLine();
if (response == null) break;
responses.Add(response);
}
}
ParseArguments(responses.ToArray(), results);
} else {
// non-option processing
results.nonoptions.Add(arg);
}
}
// make sure the required arguments were present
foreach (Option option in map.Values) {
option.processed = true;
if ((option.IsRequired) && (!option.IsPresent)) {
results.errors.Add(option.Name, ParseResult.MissingOption);
}
}
}
}
}
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