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using System;
using System.Text;
namespace MonoHttp
{
class Utility
{
#region from System.Uri
internal static bool MaybeUri (string s)
{
int p = s.IndexOf (':');
if (p == -1)
return false;
if (p >= 10)
return false;
return IsPredefinedScheme (s.Substring (0, p));
}
private static bool IsPredefinedScheme (string scheme)
{
switch (scheme) {
case "http":
case "https":
case "file":
case "ftp":
case "nntp":
case "gopher":
case "mailto":
case "news":
#if NET_2_0
case "net.pipe":
case "net.tcp":
#endif
return true;
default:
return false;
}
}
#endregion
#region from System.Net.Cookiie
internal static string ToClientString (System.Net.Cookie cookie)
{
if (cookie.Name.Length == 0)
return String.Empty;
StringBuilder result = new StringBuilder (64);
if (cookie.Version > 0)
result.Append ("Version=").Append (cookie.Version).Append (";");
result.Append (cookie.Name).Append ("=").Append (cookie.Value);
if (cookie.Path != null && cookie.Path.Length != 0)
result.Append (";Path=").Append (QuotedString (cookie, cookie.Path));
if (cookie.Domain != null && cookie.Domain.Length != 0)
result.Append (";Domain=").Append (QuotedString (cookie, cookie.Domain));
if (cookie.Port != null && cookie.Port.Length != 0)
result.Append (";Port=").Append (cookie.Port);
return result.ToString ();
}
// See par 3.6 of RFC 2616
static string QuotedString (System.Net.Cookie cookie, string value)
{
if (cookie.Version == 0 || IsToken (value))
return value;
else
return "\"" + value.Replace("\"", "\\\"") + "\"";
}
static bool IsToken (string value)
{
int len = value.Length;
for (int i = 0; i < len; i++) {
char c = value [i];
if (c < 0x20 || c >= 0x7f || tspecials.IndexOf (c) != -1)
return false;
}
return true;
}
static string tspecials = "()<>@,;:\\\"/[]?={} \t"; // from RFC 2965, 2068
#endregion
}
}
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