Move functions for controlling Caps Lock to CapsLockDelegate from SystemTrayDelegate.
[chromium-blink-merge.git] / base / sys_info_chromeos.cc
blob92a3f0c4b1a5d2969d7ddcb4b4bbc6569e796ab0
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.
5 #include "base/sys_info.h"
7 #include "base/basictypes.h"
8 #include "base/file_path.h"
9 #include "base/file_util.h"
10 #include "base/lazy_instance.h"
11 #include "base/string_number_conversions.h"
12 #include "base/string_piece.h"
13 #include "base/string_tokenizer.h"
14 #include "base/threading/thread_restrictions.h"
16 #include <execinfo.h>
18 namespace base {
20 static const char* kLinuxStandardBaseVersionKeys[] = {
21 "CHROMEOS_RELEASE_VERSION",
22 "GOOGLE_RELEASE",
23 "DISTRIB_RELEASE",
24 NULL
27 const char kLinuxStandardBaseReleaseFile[] = "/etc/lsb-release";
29 struct ChromeOSVersionNumbers {
30 ChromeOSVersionNumbers()
31 : major_version(0),
32 minor_version(0),
33 bugfix_version(0),
34 parsed(false) {
37 int32 major_version;
38 int32 minor_version;
39 int32 bugfix_version;
40 bool parsed;
43 static base::LazyInstance<ChromeOSVersionNumbers>
44 g_chrome_os_version_numbers = LAZY_INSTANCE_INITIALIZER;
46 // static
47 void SysInfo::OperatingSystemVersionNumbers(int32* major_version,
48 int32* minor_version,
49 int32* bugfix_version) {
50 if (!g_chrome_os_version_numbers.Get().parsed) {
51 // The other implementations of SysInfo don't block on the disk.
52 // See http://code.google.com/p/chromium/issues/detail?id=60394
53 // Perhaps the caller ought to cache this?
54 // Temporary allowing while we work the bug out.
55 base::ThreadRestrictions::ScopedAllowIO allow_io;
57 FilePath path(kLinuxStandardBaseReleaseFile);
58 std::string contents;
59 if (file_util::ReadFileToString(path, &contents)) {
60 g_chrome_os_version_numbers.Get().parsed = true;
61 ParseLsbRelease(contents,
62 &(g_chrome_os_version_numbers.Get().major_version),
63 &(g_chrome_os_version_numbers.Get().minor_version),
64 &(g_chrome_os_version_numbers.Get().bugfix_version));
67 *major_version = g_chrome_os_version_numbers.Get().major_version;
68 *minor_version = g_chrome_os_version_numbers.Get().minor_version;
69 *bugfix_version = g_chrome_os_version_numbers.Get().bugfix_version;
72 // static
73 std::string SysInfo::GetLinuxStandardBaseVersionKey() {
74 return std::string(kLinuxStandardBaseVersionKeys[0]);
77 // static
78 void SysInfo::ParseLsbRelease(const std::string& lsb_release,
79 int32* major_version,
80 int32* minor_version,
81 int32* bugfix_version) {
82 size_t version_key_index = std::string::npos;
83 for (int i = 0; kLinuxStandardBaseVersionKeys[i] != NULL; ++i) {
84 version_key_index = lsb_release.find(kLinuxStandardBaseVersionKeys[i]);
85 if (std::string::npos != version_key_index) {
86 break;
89 if (std::string::npos == version_key_index) {
90 return;
93 size_t start_index = lsb_release.find_first_of('=', version_key_index);
94 start_index++; // Move past '='.
95 size_t length = lsb_release.find_first_of('\n', start_index) - start_index;
96 std::string version = lsb_release.substr(start_index, length);
97 StringTokenizer tokenizer(version, ".");
98 for (int i = 0; i < 3 && tokenizer.GetNext(); ++i) {
99 if (0 == i) {
100 StringToInt(StringPiece(tokenizer.token_begin(),
101 tokenizer.token_end()),
102 major_version);
103 *minor_version = *bugfix_version = 0;
104 } else if (1 == i) {
105 StringToInt(StringPiece(tokenizer.token_begin(),
106 tokenizer.token_end()),
107 minor_version);
108 } else { // 2 == i
109 StringToInt(StringPiece(tokenizer.token_begin(),
110 tokenizer.token_end()),
111 bugfix_version);
116 // static
117 FilePath SysInfo::GetLsbReleaseFilePath() {
118 return FilePath(kLinuxStandardBaseReleaseFile);
121 } // namespace base