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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "components/dom_distiller/core/url_utils.h"
      6 
      7 #include <string>
      8 
      9 #include "base/guid.h"
     10 #include "components/dom_distiller/core/url_constants.h"
     11 #include "grit/components_resources.h"
     12 #include "net/base/url_util.h"
     13 #include "ui/base/resource/resource_bundle.h"
     14 #include "url/gurl.h"
     15 
     16 namespace dom_distiller {
     17 
     18 namespace url_utils {
     19 
     20 namespace {
     21 
     22 const char kDummyInternalUrlPrefix[] = "chrome-distiller-internal://dummy/";
     23 
     24 }  // namespace
     25 
     26 const GURL GetDistillerViewUrlFromEntryId(const std::string& scheme,
     27                                           const std::string& entry_id) {
     28   GURL url(scheme + "://" + base::GenerateGUID());
     29   return net::AppendOrReplaceQueryParameter(url, kEntryIdKey, entry_id);
     30 }
     31 
     32 const GURL GetDistillerViewUrlFromUrl(const std::string& scheme,
     33                                       const GURL& view_url) {
     34   GURL url(scheme + "://" + base::GenerateGUID());
     35   return net::AppendOrReplaceQueryParameter(url, kUrlKey, view_url.spec());
     36 }
     37 
     38 std::string GetValueForKeyInUrl(const GURL& url, const std::string& key) {
     39   if (!url.is_valid())
     40     return "";
     41   std::string value;
     42   if (net::GetValueForKeyInQuery(url, key, &value)) {
     43     return value;
     44   }
     45   return "";
     46 }
     47 
     48 std::string GetValueForKeyInUrlPathQuery(const std::string& path,
     49                                          const std::string& key) {
     50   // Tools for retrieving a value in a query only works with full GURLs, so
     51   // using a dummy scheme and host to create a fake URL which can be parsed.
     52   GURL dummy_url(kDummyInternalUrlPrefix + path);
     53   return GetValueForKeyInUrl(dummy_url, key);
     54 }
     55 
     56 bool IsUrlDistillable(const GURL& url) {
     57   return url.is_valid() && url.SchemeIsHTTPOrHTTPS();
     58 }
     59 
     60 bool IsDistilledPage(const GURL& url) {
     61   return url.is_valid() && url.scheme() == kDomDistillerScheme;
     62 }
     63 
     64 std::string GetIsDistillableJs() {
     65   return ResourceBundle::GetSharedInstance()
     66       .GetRawDataResource(IDR_IS_DISTILLABLE_JS).as_string();
     67 }
     68 
     69 }  // namespace url_utils
     70 
     71 }  // namespace dom_distiller
     72