Index: prefs.cc |
diff --git a/prefs.cc b/prefs.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..38129c90fc28a37738d742a8133cda51c829a742 |
--- /dev/null |
+++ b/prefs.cc |
@@ -0,0 +1,65 @@ |
+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "update_engine/prefs.h" |
+ |
+#include "base/file_util.h" |
+#include "base/logging.h" |
+#include "base/string_util.h" |
+#include "update_engine/utils.h" |
+ |
+using std::string; |
+ |
+namespace chromeos_update_engine { |
+ |
+bool Prefs::Init(const FilePath& prefs_dir) { |
+ prefs_dir_ = prefs_dir; |
+ return true; |
+} |
+ |
+bool Prefs::GetString(const string& key, string* value) { |
+ LOG(INFO) << "Getting key \"" << key << "\""; |
+ FilePath filename; |
+ TEST_AND_RETURN_FALSE(GetFileNameForKey(key, &filename)); |
+ TEST_AND_RETURN_FALSE(file_util::ReadFileToString(filename, value)); |
+ LOG(INFO) << "Key \"" << key << "\" value \"" << *value << "\""; |
+ return true; |
+} |
+ |
+bool Prefs::SetString(const std::string& key, const std::string& value) { |
+ LOG(INFO) << "Setting key \"" << key << "\" value \"" << value << "\""; |
+ FilePath filename; |
+ TEST_AND_RETURN_FALSE(GetFileNameForKey(key, &filename)); |
+ TEST_AND_RETURN_FALSE(file_util::CreateDirectory(filename.DirName())); |
+ TEST_AND_RETURN_FALSE( |
+ file_util::WriteFile(filename, value.data(), value.size()) == |
+ static_cast<int>(value.size())); |
+ return true; |
+} |
+ |
+bool Prefs::GetInt64(const string& key, int64_t* value) { |
+ string str_value; |
+ TEST_AND_RETURN_FALSE(GetString(key, &str_value)); |
+ TrimWhitespaceASCII(str_value, TRIM_ALL, &str_value); |
+ TEST_AND_RETURN_FALSE(StringToInt64(str_value, value)); |
+ return true; |
+} |
+ |
+bool Prefs::SetInt64(const string& key, const int64_t value) { |
+ return SetString(key, Int64ToString(value)); |
+} |
+ |
+bool Prefs::GetFileNameForKey(const std::string& key, FilePath* filename) { |
+ // Allows only non-empty keys containing [A-Za-z0-9_-]. |
+ TEST_AND_RETURN_FALSE(!key.empty()); |
+ for (size_t i = 0; i < key.size(); ++i) { |
+ char c = key.at(i); |
+ TEST_AND_RETURN_FALSE(IsAsciiAlpha(c) || IsAsciiDigit(c) || |
+ c == '_' || c == '-'); |
+ } |
+ *filename = prefs_dir_.Append(key); |
+ return true; |
+} |
+ |
+} // namespace chromeos_update_engine |