text: /*
   * Copyright 2013 Google Inc.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  // Author: jefftk@google.com (Jeff Kaufman)
  
  #ifndef NGX_CACHING_HEADERS_H_
  #define NGX_CACHING_HEADERS_H_
  
  extern "C" {
    #include <ngx_http.h>
  }
  
  #include "pagespeed/kernel/base/basictypes.h"
  #include "pagespeed/kernel/http/caching_headers.h"
  
  namespace net_instaweb {
  
  // Based off of ApacheCachingHeaders in net/instaweb/apache/header_util.cc
  // Needed so ps_header_filter can call GenerateDisabledCacheControl().
  class NgxCachingHeaders : public CachingHeaders {
   public:
    explicit NgxCachingHeaders(ngx_http_request_t* request)
        : CachingHeaders(request->headers_out.status),
          request_(request) {
    }
  
    virtual bool Lookup(const StringPiece& key, StringPieceVector* values);
  
    virtual bool IsLikelyStaticResourceType() const {
      DCHECK(false);  // not called in our use-case.
      return false;
    }
  
    virtual bool IsCacheableResourceStatusCode() const {
      DCHECK(false);  // not called in our use-case.
      return false;
    }
  
   private:
    ngx_http_request_t* request_;
  
    DISALLOW_COPY_AND_ASSIGN(NgxCachingHeaders);
  };
  
  }  // namespace net_instaweb
  
  #endif  // NGX_CACHING_HEADERS_H_
  