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Side by Side Diff: base/registry.h

Issue 3836005: Move pe_image and registry from base to base/win and use the namespace. It re... (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: '' Created 10 years, 2 months ago
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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef BASE_REGISTRY_H_ 5 #ifndef BASE_REGISTRY_H_
6 #define BASE_REGISTRY_H_ 6 #define BASE_REGISTRY_H_
7 #pragma once 7 #pragma once
8 8
9 #include <windows.h> 9 // TODO(brettw) remove this file when all callers are converted to using the
10 #include <string> 10 // new location & namespace.
11 #include "base/win/registry.h"
11 12
12 #include "base/basictypes.h" 13 class RegKey : public base::win::RegKey {
13
14 // Utility class to read, write and manipulate the Windows Registry.
15 // Registry vocabulary primer: a "key" is like a folder, in which there
16 // are "values", which are <name, data> pairs, with an associated data type.
17 class RegKey {
18 public: 14 public:
19 RegKey(); 15 RegKey() {}
20 RegKey(HKEY rootkey, const wchar_t* subkey, REGSAM access); 16 RegKey(HKEY rootkey, const wchar_t* subkey, REGSAM access)
21 ~RegKey(); 17 : base::win::RegKey(rootkey, subkey, access) {}
22 18 ~RegKey() { base::win::RegKey::~RegKey(); }
23 bool Create(HKEY rootkey, const wchar_t* subkey, REGSAM access);
24
25 bool CreateWithDisposition(HKEY rootkey, const wchar_t* subkey,
26 DWORD* disposition, REGSAM access);
27
28 bool Open(HKEY rootkey, const wchar_t* subkey, REGSAM access);
29
30 // Creates a subkey or open it if it already exists.
31 bool CreateKey(const wchar_t* name, REGSAM access);
32
33 // Opens a subkey
34 bool OpenKey(const wchar_t* name, REGSAM access);
35
36 void Close();
37
38 DWORD ValueCount();
39
40 // Determine the nth value's name.
41 bool ReadName(int index, std::wstring* name);
42
43 // True while the key is valid.
44 bool Valid() const { return key_ != NULL; }
45
46 // Kill a key and everything that live below it; please be careful when using
47 // it.
48 bool DeleteKey(const wchar_t* name);
49
50 // Deletes a single value within the key.
51 bool DeleteValue(const wchar_t* name);
52
53 bool ValueExists(const wchar_t* name);
54
55 bool ReadValue(const wchar_t* name, void* data, DWORD* dsize, DWORD* dtype);
56 bool ReadValue(const wchar_t* name, std::wstring* value);
57 bool ReadValueDW(const wchar_t* name, DWORD* value);
58
59 bool WriteValue(const wchar_t* name, const void* data, DWORD dsize,
60 DWORD dtype);
61 bool WriteValue(const wchar_t* name, const wchar_t* value);
62 bool WriteValue(const wchar_t* name, DWORD value);
63
64 // Starts watching the key to see if any of its values have changed.
65 // The key must have been opened with the KEY_NOTIFY access privelege.
66 bool StartWatching();
67
68 // If StartWatching hasn't been called, always returns false.
69 // Otherwise, returns true if anything under the key has changed.
70 // This can't be const because the |watch_event_| may be refreshed.
71 bool HasChanged();
72
73 // Will automatically be called by destructor if not manually called
74 // beforehand. Returns true if it was watching, false otherwise.
75 bool StopWatching();
76
77 inline bool IsWatching() const { return watch_event_ != 0; }
78 HANDLE watch_event() const { return watch_event_; }
79 HKEY Handle() const { return key_; }
80
81 private:
82 HKEY key_; // The registry key being iterated.
83 HANDLE watch_event_;
84
85 DISALLOW_COPY_AND_ASSIGN(RegKey);
86 }; 19 };
87 20
88 // Iterates the entries found in a particular folder on the registry. 21 class RegistryValueIterator : public base::win::RegistryValueIterator {
89 // For this application I happen to know I wont need data size larger
90 // than MAX_PATH, but in real life this wouldn't neccessarily be
91 // adequate.
92 class RegistryValueIterator {
93 public: 22 public:
94 RegistryValueIterator(HKEY root_key, const wchar_t* folder_key); 23 RegistryValueIterator(HKEY root_key, const wchar_t* folder_key)
95 24 : base::win::RegistryValueIterator(root_key, folder_key) {}
96 ~RegistryValueIterator(); 25 ~RegistryValueIterator() {
97 26 base::win::RegistryValueIterator::~RegistryValueIterator();
98 DWORD ValueCount() const; 27 }
99
100 // True while the iterator is valid.
101 bool Valid() const;
102
103 // Advances to the next registry entry.
104 void operator++();
105
106 const wchar_t* Name() const { return name_; }
107 const wchar_t* Value() const { return value_; }
108 DWORD ValueSize() const { return value_size_; }
109 DWORD Type() const { return type_; }
110
111 int Index() const { return index_; }
112
113 private:
114 // Read in the current values.
115 bool Read();
116
117 // The registry key being iterated.
118 HKEY key_;
119
120 // Current index of the iteration.
121 int index_;
122
123 // Current values.
124 wchar_t name_[MAX_PATH];
125 wchar_t value_[MAX_PATH];
126 DWORD value_size_;
127 DWORD type_;
128
129 DISALLOW_COPY_AND_ASSIGN(RegistryValueIterator);
130 }; 28 };
131 29
132 class RegistryKeyIterator { 30 class RegistryKeyIterator : public base::win::RegistryKeyIterator {
133 public: 31 public:
134 RegistryKeyIterator(HKEY root_key, const wchar_t* folder_key); 32 RegistryKeyIterator(HKEY root_key, const wchar_t* folder_key)
135 33 : base::win::RegistryKeyIterator(root_key, folder_key) {}
136 ~RegistryKeyIterator(); 34 ~RegistryKeyIterator() {
137 35 base::win::RegistryKeyIterator::~RegistryKeyIterator();
138 DWORD SubkeyCount() const; 36 }
139
140 // True while the iterator is valid.
141 bool Valid() const;
142
143 // Advances to the next entry in the folder.
144 void operator++();
145
146 const wchar_t* Name() const { return name_; }
147
148 int Index() const { return index_; }
149
150 private:
151 // Read in the current values.
152 bool Read();
153
154 // The registry key being iterated.
155 HKEY key_;
156
157 // Current index of the iteration.
158 int index_;
159
160 wchar_t name_[MAX_PATH];
161
162 DISALLOW_COPY_AND_ASSIGN(RegistryKeyIterator);
163 }; 37 };
164 38
165 #endif // BASE_REGISTRY_H_ 39 #endif // BASE_REGISTRY_H_
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