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Side by Side Diff: mojo/runner/url_resolver.h

Issue 1343823002: Revert of Move fetching logic out of ApplicationManager, eliminate url mappings. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 3 months ago
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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 #ifndef MOJO_RUNNER_URL_RESOLVER_H_
6 #define MOJO_RUNNER_URL_RESOLVER_H_
7
8 #include <map>
9 #include <set>
10
11 #include "base/basictypes.h"
12 #include "base/command_line.h"
13 #include "base/files/file_path.h"
14 #include "url/gurl.h"
15
16 namespace mojo {
17 namespace runner {
18
19 // This class supports the mapping of URLs to other URLs.
20 // It's commonly used with mojo: URL, to provide a physical location URL
21 // (i.e. file: or https:) but works with any URL.
22 // By default, "mojo:" URLs resolve to a file location, with ".mojo" appended,
23 // but that resolution can be customized via the AddURLMapping and
24 // AddOriginMapping methods.
25 class URLResolver {
26 public:
27 URLResolver();
28 ~URLResolver();
29
30 // Used for the return value of GetOriginMappings().
31 struct OriginMapping {
32 OriginMapping(const std::string& origin, const std::string& base_url)
33 : origin(origin), base_url(base_url) {}
34
35 std::string origin;
36 std::string base_url;
37 };
38
39 // Returns a list of origin mappings based on command line args.
40 // The switch --map-origin can be specified multiple times. Each occurrence
41 // has the format of --map-origin={origin}={base_url}
42 // For example:
43 // --map-origin=http://domokit.org=file:///source/out
44 static std::vector<OriginMapping> GetOriginMappings(
45 const base::CommandLine::StringVector& argv);
46
47 // Add a custom mapping for a particular URL. If |mapped_url| is
48 // itself a mojo URL, then normal resolution rules apply.
49 void AddURLMapping(const GURL& url, const GURL& mapped_url);
50
51 // Add a custom mapping for all URLs rooted at |origin|. An origin is a
52 // combination of URL scheme, host and port.
53 void AddOriginMapping(const GURL& origin, const GURL& base_url);
54
55 // Applies all custom mappings for |url|, returning the last non-mapped url.
56 // For example, if 'a' maps to 'b' and 'b' maps to 'c', calling this with 'a'
57 // returns 'c'.
58 GURL ApplyMappings(const GURL& url) const;
59
60 // If specified, then "mojo:" URLs will be resolved relative to this
61 // URL. That is, the portion after the colon will be appended to
62 // |mojo_base_url| with .mojo appended.
63 void SetMojoBaseURL(const GURL& mojo_base_url);
64
65 // Resolve the given "mojo:" URL to the URL that should be used to fetch the
66 // code for the corresponding Mojo App.
67 GURL ResolveMojoURL(const GURL& mojo_url) const;
68
69 private:
70 using GURLToGURLMap = std::map<GURL, GURL>;
71 GURLToGURLMap url_map_;
72 GURLToGURLMap origin_map_;
73 GURL mojo_base_url_;
74
75 DISALLOW_COPY_AND_ASSIGN(URLResolver);
76 };
77
78 } // namespace runner
79 } // namespace mojo
80
81 #endif // MOJO_RUNNER_URL_RESOLVER_H_
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