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1 // Copyright 2013 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 EXTENSIONS_BROWSER_MANIFEST_HIGHLIGHTER_H_ | |
6 #define EXTENSIONS_BROWSER_MANIFEST_HIGHLIGHTER_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "base/basictypes.h" | |
11 | |
12 namespace extensions { | |
13 | |
14 // Use the ManifestHighlighter class to find the bounds of a feature in the | |
15 // manifest. The manifest is parsed for the feature upon construction of the | |
16 // object. | |
17 // A feature can be at any level in the hierarchy. The "start" of a feature is | |
18 // the first character of the feature name, or the beginning quote of the name, | |
19 // if present. The "end" of a feature is wherever the next item at the same | |
20 // level starts. | |
21 // For instance, the bounds for the 'permissions' feature at the top level could | |
22 // be '"permissions": { "tabs", "history", "downloads" }', but the feature for | |
23 // 'tabs' within 'permissions' would just be '"tabs"'. | |
24 // We can't use the JSONParser to do this, because we want to display the actual | |
25 // manifest, and once we parse it into Values, we lose any formatting the user | |
26 // may have had. | |
27 // If a feature cannot be found, the feature will have zero-length. | |
28 class ManifestHighlighter { | |
29 public: | |
30 ManifestHighlighter(const std::string& manifest, | |
31 const std::string& key, | |
32 const std::string& specific /* optional */); | |
33 ~ManifestHighlighter(); | |
34 | |
35 // Get the portion of the manifest which should not be highlighted and is | |
36 // before the feature. | |
37 std::string GetBeforeFeature() const; | |
Dan Beam
2013/08/21 23:41:03
nit: \n between basically all these members/method
Devlin
2013/08/22 18:29:06
Done.
| |
38 // Get the feature portion of the manifest, which should be highlighted. | |
39 std::string GetFeature() const; | |
40 // Get the portion of the manifest which should not be highlighted and is | |
41 // after the feature. | |
42 std::string GetAfterFeature() const; | |
43 | |
44 private: | |
45 // Called from the constructor; determine the start and end bounds of a | |
46 // feature, using both the key and specific information. | |
47 void Parse(const std::string& key, const std::string& specific); | |
48 | |
49 // Find the bounds of any feature, either a full key or a specific item within | |
50 // the key. |enforce_at_top_level| means that the feature we find must be at | |
51 // the same level as |start_| (i.e., ignore nested elements). | |
52 // Returns true on success. | |
53 bool FindBounds(const std::string& feature, bool enforce_at_top_level); | |
54 // Finds the end of the feature. | |
55 void FindBoundsEnd(const std::string& feature, size_t local_start); | |
56 | |
57 // The manifest we are parsing. | |
58 std::string manifest_; | |
59 // The start of the feature. | |
60 size_t start_; | |
61 // The end of the feature. | |
62 size_t end_; | |
63 | |
64 DISALLOW_COPY_AND_ASSIGN(ManifestHighlighter); | |
65 }; | |
66 | |
67 } // namespace extensions | |
68 | |
69 #endif // EXTENSIONS_BROWSER_MANIFEST_HIGHLIGHTER_H_ | |
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