text: // Copyright 2016 The Chromium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  #ifndef URL_MOJO_URL_GURL_STRUCT_TRAITS_H_
  #define URL_MOJO_URL_GURL_STRUCT_TRAITS_H_
  
  #include "base/strings/string_piece.h"
  #include "url/gurl.h"
  #include "url/mojo/url.mojom.h"
  #include "url/url_constants.h"
  
  namespace mojo {
  
  template <>
  struct StructTraits<url::mojom::Url, GURL> {
    static base::StringPiece url(const GURL& r) {
      if (r.possibly_invalid_spec().length() > url::kMaxURLChars ||
          !r.is_valid()) {
        return base::StringPiece();
      }
  
      return base::StringPiece(r.possibly_invalid_spec().c_str(),
                               r.possibly_invalid_spec().length());
    }
    static bool Read(url::mojom::UrlDataView data, GURL* out) {
      base::StringPiece url_string;
      if (!data.ReadUrl(&url_string))
        return false;
  
      if (url_string.length() > url::kMaxURLChars)
        return false;
  
      *out = GURL(url_string);
      if (!url_string.empty() && !out->is_valid())
        return false;
  
      return true;
    }
  };
  
  }
  
  #endif  // URL_MOJO_URL_GURL_STRUCT_TRAITS_H_
  