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//
// System.Web.Caching.CachedVaryBy
//
// Authors:
// Jackson Harper (jackson@ximian.com)
// Marek Habersack <mhabersack@novell.com>
//
// (C) 2003-2010 Novell, Inc (http://www.novell.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;
using System.Globalization;
using System.Text;
using System.Collections;
using System.Collections.Generic;
using System.Web.Util;
namespace System.Web.Caching
{
#if NET_4_0
[Serializable]
#endif
sealed class CachedVaryBy
{
string[] prms;
string[] headers;
string custom;
string key;
List <string> item_list;
bool wildCardParams;
internal CachedVaryBy (HttpCachePolicy policy, string key)
{
prms = policy.VaryByParams.GetParamNames ();
headers = policy.VaryByHeaders.GetHeaderNames (policy.OmitVaryStar);
custom = policy.GetVaryByCustom ();
this.key = key;
item_list = new List <string> ();
wildCardParams = policy.VaryByParams ["*"];
}
internal List <string> ItemList {
get { return item_list; }
}
internal string Key {
get { return key; }
}
internal string CreateKey (string file_path, HttpContext context)
{
if (String.IsNullOrEmpty (file_path))
throw new ArgumentNullException ("file_path");
StringBuilder builder = new StringBuilder ("vbk"); // VaryBy Key
HttpRequest request = context != null ? context.Request : null;
string name, value;
builder.Append (file_path);
if (request == null)
return builder.ToString ();
builder.Append (request.HttpMethod);
if (wildCardParams) {
builder.Append ("WQ"); // Wildcard, Query
foreach (string p in request.QueryString) {
if (p == null)
continue;
builder.Append ('N'); // Name
builder.Append (p.ToLowerInvariant ());
value = request.QueryString [p];
if (String.IsNullOrEmpty (value))
continue;
builder.Append ('V'); // Value
builder.Append (value);
}
builder.Append ('F'); // Form
foreach (string p in request.Form) {
if (p == null)
continue;
builder.Append ('N'); // Name
builder.Append (p.ToLowerInvariant ());
value = request.Form [p];
if (String.IsNullOrEmpty (value))
continue;
builder.Append ('V'); // Value
builder.Append (value);
}
} else if (prms != null) {
StringBuilder fprms = null;
builder.Append ("SQ"); // Specified, Query
for (int i = 0; i < prms.Length; i++) {
name = prms [i];
if (String.IsNullOrEmpty (name))
continue;
value = request.QueryString [name];
if (value != null) {
builder.Append ('N'); // Name
builder.Append (name.ToLowerInvariant ());
if (value.Length > 0) {
builder.Append ('V'); // Value
builder.Append (value);
}
}
value = request.Form [name];
if (value != null) {
if (fprms == null)
fprms = new StringBuilder ('F'); // Form
builder.Append ('N'); // Name
builder.Append (name.ToLowerInvariant ());
if (value.Length > 0) {
builder.Append ('V'); // Value
builder.Append (value);
}
}
}
if (fprms != null)
builder.Append (fprms.ToString ());
}
if (headers != null) {
builder.Append ('H'); // Headers
for (int i=0; i < headers.Length; i++) {
builder.Append ('N'); // Name
name = headers [i];
builder.Append (name.ToLowerInvariant ());
value = request.Headers [name];
if (String.IsNullOrEmpty (value))
continue;
builder.Append ('V'); // Value
builder.Append (value);
}
}
if (custom != null) {
builder.Append ('C'); // Custom
string s = context.ApplicationInstance.GetVaryByCustomString (context, custom);
builder.Append ('N'); // Name
builder.Append (custom);
builder.Append ('V'); // Value
builder.Append (s != null ? s : "__null__");
}
return builder.ToString ();
}
}
}
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