1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <string.h> 18 19 #include <string> 20 #include <unordered_map> 21 22 #include <sys/system_properties.h> 23 24 std::unordered_map<std::string, std::string> g_properties; 25 26 extern "C" int property_set(const char* name, const char* value) { 27 if (g_properties.count(name) != 0) { 28 g_properties.erase(name); 29 } 30 g_properties[name] = value; 31 return 0; 32 } 33 34 extern "C" int property_get(const char* key, char* value, const char* default_value) { 35 if (g_properties.count(key) == 0) { 36 if (default_value == nullptr) { 37 return 0; 38 } 39 strncpy(value, default_value, PROP_VALUE_MAX-1); 40 } else { 41 strncpy(value, g_properties[key].c_str(), PROP_VALUE_MAX-1); 42 } 43 value[PROP_VALUE_MAX-1] = '\0'; 44 return strlen(value); 45 } 46
