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//
// Parser.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.Net.Mail;
using System.Globalization;
using System.Collections.Generic;
namespace System.Net.Http.Headers
{
static class Parser
{
public static class Token
{
public static bool TryParse (string input, out string result)
{
if (input != null && Lexer.IsValidToken (input)) {
result = input;
return true;
}
result = null;
return false;
}
public static void Check (string s)
{
if (s == null)
throw new ArgumentNullException ();
if (!Lexer.IsValidToken (s)) {
if (s.Length == 0)
throw new ArgumentException ();
throw new FormatException (s);
}
}
public static bool TryCheck (string s)
{
if (s == null)
return false;
return Lexer.IsValidToken (s);
}
public static void CheckQuotedString (string s)
{
if (s == null)
throw new ArgumentNullException ();
var lexer = new Lexer (s);
if (lexer.Scan () == Headers.Token.Type.QuotedString && lexer.Scan () == Headers.Token.Type.End)
return;
if (s.Length == 0)
throw new ArgumentException ();
throw new FormatException (s);
}
public static void CheckComment (string s)
{
if (s == null)
throw new ArgumentNullException ();
var lexer = new Lexer (s);
string temp;
if (!lexer.ScanCommentOptional (out temp)) {
if (s.Length == 0)
throw new ArgumentException ();
throw new FormatException (s);
}
}
}
public static class DateTime
{
public new static readonly Func<object, string> ToString = l => ((DateTimeOffset) l).ToString ("r", CultureInfo.InvariantCulture);
public static bool TryParse (string input, out DateTimeOffset result)
{
return Lexer.TryGetDateValue (input, out result);
}
}
public static class EmailAddress
{
public static bool TryParse (string input, out string result)
{
try {
new MailAddress (input);
result = input;
return true;
} catch {
result = null;
return false;
}
}
}
public static class Int
{
public static bool TryParse (string input, out int result)
{
return int.TryParse (input, NumberStyles.None, CultureInfo.InvariantCulture, out result);
}
}
public static class Long
{
public static bool TryParse (string input, out long result)
{
return long.TryParse (input, NumberStyles.None, CultureInfo.InvariantCulture, out result);
}
}
public static class MD5
{
public new static readonly Func<object, string> ToString = l => Convert.ToBase64String ((byte[]) l);
public static bool TryParse (string input, out byte[] result)
{
try {
result = Convert.FromBase64String (input);
return true;
} catch {
result = null;
return false;
}
}
}
public static class TimeSpanSeconds
{
public static bool TryParse (string input, out TimeSpan result)
{
int value;
if (Int.TryParse (input, out value)) {
result = TimeSpan.FromSeconds (value);
return true;
}
result = TimeSpan.Zero;
return false;
}
}
public static class Uri
{
public static bool TryParse (string input, out System.Uri result)
{
return System.Uri.TryCreate (input, UriKind.RelativeOrAbsolute, out result);
}
public static void Check (string s)
{
if (s == null)
throw new ArgumentNullException ();
System.Uri uri;
if (!TryParse (s, out uri)) {
if (s.Length == 0)
throw new ArgumentException ();
throw new FormatException (s);
}
}
}
}
}
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