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1 // Copyright (c) 2012 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 CHROME_BROWSER_DRIVE_DRIVE_API_UTIL_H_ | |
6 #define CHROME_BROWSER_DRIVE_DRIVE_API_UTIL_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "base/md5.h" | |
11 #include "base/memory/scoped_ptr.h" | |
12 #include "google_apis/drive/drive_api_error_codes.h" | |
13 #include "google_apis/drive/drive_common_callbacks.h" | |
14 | |
15 class GURL; | |
16 | |
17 namespace base { | |
18 class CancellationFlag; | |
19 class FilePath; | |
20 class Value; | |
21 } // namespace base | |
22 | |
23 namespace google_apis { | |
24 class ChangeList; | |
25 class ChangeResource; | |
26 class FileList; | |
27 class FileResource; | |
28 class ResourceEntry; | |
29 } // namespace google_apis | |
30 | |
31 namespace net { | |
32 class IOBuffer; | |
33 } // namespace net | |
34 | |
35 namespace storage { | |
36 class FileStreamReader; | |
37 } // namespace storage | |
38 | |
39 namespace drive { | |
40 namespace util { | |
41 | |
42 // Google Apps MIME types: | |
43 const char kGoogleDocumentMimeType[] = "application/vnd.google-apps.document"; | |
44 const char kGoogleDrawingMimeType[] = "application/vnd.google-apps.drawing"; | |
45 const char kGooglePresentationMimeType[] = | |
46 "application/vnd.google-apps.presentation"; | |
47 const char kGoogleSpreadsheetMimeType[] = | |
48 "application/vnd.google-apps.spreadsheet"; | |
49 const char kGoogleTableMimeType[] = "application/vnd.google-apps.table"; | |
50 const char kGoogleFormMimeType[] = "application/vnd.google-apps.form"; | |
51 const char kGoogleMapMimeType[] = "application/vnd.google-apps.map"; | |
52 const char kDriveFolderMimeType[] = "application/vnd.google-apps.folder"; | |
53 | |
54 // Escapes ' to \' in the |str|. This is designed to use for string value of | |
55 // search parameter on Drive API v2. | |
56 // See also: https://developers.google.com/drive/search-parameters | |
57 std::string EscapeQueryStringValue(const std::string& str); | |
58 | |
59 // Parses the query, and builds a search query for Drive API v2. | |
60 // This only supports: | |
61 // Regular query (e.g. dog => fullText contains 'dog') | |
62 // Conjunctions | |
63 // (e.g. dog cat => fullText contains 'dog' and fullText contains 'cat') | |
64 // Exclusion query (e.g. -cat => not fullText contains 'cat'). | |
65 // Quoted query (e.g. "dog cat" => fullText contains 'dog cat'). | |
66 // See also: https://developers.google.com/drive/search-parameters | |
67 std::string TranslateQuery(const std::string& original_query); | |
68 | |
69 // If |resource_id| is in the old resource ID format used by WAPI, converts it | |
70 // into the new format. | |
71 std::string CanonicalizeResourceId(const std::string& resource_id); | |
72 | |
73 // Returns the (base-16 encoded) MD5 digest of the file content at |file_path|, | |
74 // or an empty string if an error is found. | |
75 std::string GetMd5Digest(const base::FilePath& file_path, | |
76 const base::CancellationFlag* cancellation_flag); | |
77 | |
78 // Computes the (base-16 encoded) MD5 digest of data extracted from a file | |
79 // stream. | |
80 class FileStreamMd5Digester { | |
81 public: | |
82 typedef base::Callback<void(const std::string&)> ResultCallback; | |
83 | |
84 FileStreamMd5Digester(); | |
85 ~FileStreamMd5Digester(); | |
86 | |
87 // Computes an MD5 digest of data read from the given |streamReader|. The | |
88 // work occurs asynchronously, and the resulting hash is returned via the | |
89 // |callback|. If an error occurs, |callback| is called with an empty string. | |
90 // Only one stream can be processed at a time by each digester. Do not call | |
91 // GetMd5Digest before the results of a previous call have been returned. | |
92 void GetMd5Digest(scoped_ptr<storage::FileStreamReader> stream_reader, | |
93 const ResultCallback& callback); | |
94 | |
95 private: | |
96 // Kicks off a read of the next chunk from the stream. | |
97 void ReadNextChunk(const ResultCallback& callback); | |
98 // Handles the incoming chunk of data from a stream read. | |
99 void OnChunkRead(const ResultCallback& callback, int bytes_read); | |
100 | |
101 // Maximum chunk size for read operations. | |
102 scoped_ptr<storage::FileStreamReader> reader_; | |
103 scoped_refptr<net::IOBuffer> buffer_; | |
104 base::MD5Context md5_context_; | |
105 | |
106 DISALLOW_COPY_AND_ASSIGN(FileStreamMd5Digester); | |
107 }; | |
108 | |
109 // Returns preferred file extension for hosted documents which have given mime | |
110 // type. | |
111 std::string GetHostedDocumentExtension(const std::string& mime_type); | |
112 | |
113 // Returns true if the given mime type is corresponding to one of known hosted | |
114 // document types. | |
115 bool IsKnownHostedDocumentMimeType(const std::string& mime_type); | |
116 | |
117 // Returns true if the given file path has an extension corresponding to one of | |
118 // hosted document types. | |
119 bool HasHostedDocumentExtension(const base::FilePath& path); | |
120 | |
121 } // namespace util | |
122 } // namespace drive | |
123 | |
124 #endif // CHROME_BROWSER_DRIVE_DRIVE_API_UTIL_H_ | |
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