1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
//
// WarningHeaderValue.cs
//
// Authors:
// Marek Safar <marek.safar@gmail.com>
//
// Copyright (C) 2011 Xamarin Inc (http://www.xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Globalization;
using System.Collections.Generic;
namespace System.Net.Http.Headers
{
public class WarningHeaderValue : ICloneable
{
public WarningHeaderValue (int code, string agent, string text)
{
if (!IsCodeValid (code))
throw new ArgumentOutOfRangeException ("code");
Parser.Uri.Check (agent);
Parser.Token.CheckQuotedString (text);
Code = code;
Agent = agent;
Text = text;
}
public WarningHeaderValue (int code, string agent, string text, DateTimeOffset date)
: this (code, agent, text)
{
Date = date;
}
private WarningHeaderValue ()
{
}
public string Agent { get; private set; }
public int Code { get; private set; }
public DateTimeOffset? Date { get; private set; }
public string Text { get; private set; }
static bool IsCodeValid (int code)
{
return code >= 0 && code < 1000;
}
object ICloneable.Clone ()
{
return MemberwiseClone ();
}
public override bool Equals (object obj)
{
var source = obj as WarningHeaderValue;
if (source == null)
return false;
return Code == source.Code &&
string.Equals (source.Agent, Agent, StringComparison.OrdinalIgnoreCase) &&
Text == source.Text &&
Date == source.Date;
}
public override int GetHashCode ()
{
int hc = Code.GetHashCode ();
hc ^= Agent.ToLowerInvariant ().GetHashCode ();
hc ^= Text.GetHashCode ();
hc ^= Date.GetHashCode ();
return hc;
}
public static WarningHeaderValue Parse (string input)
{
WarningHeaderValue value;
if (TryParse (input, out value))
return value;
throw new FormatException (input);
}
public static bool TryParse (string input, out WarningHeaderValue parsedValue)
{
var lexer = new Lexer (input);
Token token;
if (TryParseElement (lexer, out parsedValue, out token) && token == Token.Type.End)
return true;
parsedValue = null;
return false;
}
internal static bool TryParse (string input, int minimalCount, out List<WarningHeaderValue> result)
{
return CollectionParser.TryParse (input, minimalCount, TryParseElement, out result);
}
static bool TryParseElement (Lexer lexer, out WarningHeaderValue parsedValue, out Token t)
{
parsedValue = null;
t = lexer.Scan ();
if (t != Token.Type.Token)
return false;
int code;
if (!lexer.TryGetNumericValue (t, out code) || !IsCodeValid (code))
return false;
t = lexer.Scan ();
if (t != Token.Type.Token)
return false;
var next = t;
if (lexer.PeekChar () == ':') {
lexer.EatChar ();
next = lexer.Scan ();
if (next != Token.Type.Token)
return false;
}
var value = new WarningHeaderValue ();
value.Code = code;
value.Agent = lexer.GetStringValue (t, next);
t = lexer.Scan ();
if (t != Token.Type.QuotedString)
return false;
value.Text = lexer.GetStringValue (t);
t = lexer.Scan ();
if (t == Token.Type.QuotedString) {
DateTimeOffset date;
if (!lexer.TryGetDateValue (t, out date))
return false;
value.Date = date;
t = lexer.Scan ();
}
parsedValue = value;
return true;
}
public override string ToString ()
{
string s = Code.ToString ("000") + " " + Agent + " " + Text;
if (Date.HasValue)
s = s + " \"" + Date.Value.ToString ("r", CultureInfo.InvariantCulture) + "\"";
return s;
}
}
}
|
