1. protobuf
将配置信息读取到string流中
/**
* @brief 将配置文件读取到string流中
*
* @param file_name ：配置文件名称
* @param content: 读取后的string配置信息流
* @return true ：成功读取
* @return false：打开文件失败
*/
bool GetContent(const std::string &file_name, std::string *content) {
// 打开文件流
std::ifstream fin(file_name);
if (!fin) {
return false;
}
// 获取流缓冲区
std::stringstream str_stream;
str_stream << fin.rdbuf();
*content = str_stream.str();
return true;
}
创建proto格式配置文件(dag_config.proto)
message DAGConfig {
enum SubnodeType {
SUBNODE_IN = 1;
SUBNODE_OUT = 2;
SUBNODE_NORMAL = 3;
};
// Subnode instance.
message Subnode {
required int32 id = 1;
required string name = 2;
// node private data.节点私有数据
optional string reserve = 3;
optional SubnodeType type = 4 [default = SUBNODE_NORMAL];
};
message SubnodeConfig {
repeated Subnode subnodes = 1;
};
message Event {
required int32 id = 1;
optional string name = 2;
};
message Edge {
required int32 id = 1;
required int32 from_node = 2;
required int32 to_node = 3;
repeated Event events = 4;
};
message EdgeConfig {
repeated Edge edges = 1;
}
message SharedData {
required int32 id = 1;
required string name = 2;
};
message SharedDataConfig {
repeated SharedData datas = 1;
}
required SubnodeConfig subnode_config = 1;
required EdgeConfig edge_config = 2;
required SharedDataConfig data_config = 3;
};
将proto文件编译成.cc和.h文件
略
使用protobuf的序列化进行配置文件解析
DAGConfig dag_config;
string content;
// 获取内容
if (!GetContent(dag_config_path, &content)) {
return false;
}
// 解析字符串:使用protobuf的序列化进行配置文件解析，将解析结果放置在dag_config中
if (!TextFormat::ParseFromString(content, &dag_config)) {
return false;
}
2. opencv
3. json
4. gflags
在代码中设置待配置变量(alg_fusConfig.hpp)
#ifndef INTERFACE_FUS_CONFIG_H #define INTERFACE_FUS_CONFIG_H #include <gflags/gflags.h> DEFINE_bool(use_dataAcquisition, false,"Whether to use data acquisition");// FLAGS_use_dataAcquisition DEFINE_bool(use_ydutool, false,"Whether to use ydutools");// FLAGS_use_ydutool DEFINE_bool(use_aiCarport, true,"Whether to receive visual parking Spaces");// FLAGS_use_aiCarport DEFINE_bool(use_ultrasonic, true,"Whether to use ultrasonic radar");// FLAGS_use_ultrasonic // 输出打印 DEFINE_bool(use_debugPtintf, false,"Whether to use ultrasonic radar"); // FLAGS_use_debugPtintf DEFINE_bool(ptintf_fusCarportList, false,"Whether to use ultrasonic radar"); // FLAGS_ptintf_fusCarportList DEFINE_bool(ptintf_fusSelectedCarport, false,"Whether to use ultrasonic radar"); // FLAGS_ptintf_fusSelectedCarport // 输入打印 DEFINE_bool(ptintf_location, false,"Whether to use ultrasonic radar"); // FLAGS_ptintf_location DEFINE_bool(ptintf_decision, false,"Whether to use ultrasonic radar"); // FLAGS_ptintf_decision DEFINE_bool(ptintf_carSpace, false,"Whether to use ultrasonic radar"); // FLAGS_ptintf_carSpace DEFINE_bool(ptintf_userCarSpace, false,"Whether to use ultrasonic radar"); // FLAGS_ptintf_userCarSpace DEFINE_bool(ptintf_selectedCarport, false,"Whether to use ultrasonic radar"); // FLAGS_ptintf_selectedCarport DEFINE_bool(ptintf_ultrarRadar, false,"Whether to use ultrasonic radar"); // FLAGS_ptintf_ultrarRadar DEFINE_bool(ptintf_fapa, false,"Whether to use ultrasonic radar"); // FLAGS_ptintf_fapa DEFINE_bool(ptintf_vehicle, false,"Whether to use ultrasonic radar"); // FLAGS_ptintf_vehicle #endif
创建配置文件(config.conf)
## 数据采集 --use_dataAcquisition=false --use_ydutool=false --use_aiCarport=true --use_ultrasonic=true ## 输出打印 --use_debugPtintf=false --ptintf_fusCarportList=false --ptintf_fusSelectedCarport=false ## 输入打印 --ptintf_location=false --ptintf_decision=false --ptintf_carSpace=false --ptintf_userCarSpace=false --ptintf_selectedCarport=false --ptintf_ultrarRadar=false --ptintf_fapa=false --ptintf_vehicle=false
在C代码中加载配置文件
// 配置文件所在路径
std::string config_file = "/ota/SW1.0.06/modules/fusion_carport/config/config.conf";
if( fusCarportLog::CheckPath(config_file) == 1)// 判断配置文件存不存在
{
// 生成ParseCommandLineFlags 的参数支持的数据类型
std::string stingArray[2];
stingArray[0] = "fusion_carport";// 一般设置为进程名称，可以是任意字符，ParseCommandLineFlags函数要求一定需要设置
stingArray[1] = "--flagfile=";
stingArray[1] = stingArray[1] + config_file;
int numStrings = sizeof(stingArray) / sizeof(stingArray[0]);
char* charPtrArray[numStrings];
for (std::size_t i = 0; i < numStrings; ++i) {
charPtrArray[i] = new char[stingArray[i].length() + 1];
std::strcpy(charPtrArray[i], stingArray[i].c_str());
}
auto pArgv = &charPtrArray[0];
gflags::ParseCommandLineFlags(&numStrings, &pArgv, true);
for (std::size_t i = 0; i < numStrings; ++i) {
delete[] charPtrArray[i];
}
}else{
printf( "\n-->%s配置文件不存在\n",config_file.c_str());
}
printf( "\n FLAGS_use_dataAcquisition=%d\n \
FLAGS_use_ydutool=%d\n \
FLAGS_use_aiCarport=%d\n \
FLAGS_use_ultrasonic=%d\n \
FLAGS_use_debugPtintf=%d\n \
FLAGS_ptintf_fusCarportList=%d\n \
FLAGS_ptintf_fusSelectedCarport=%d\n \
FLAGS_ptintf_location=%d\n \
FLAGS_ptintf_decision=%d\n \
FLAGS_ptintf_carSpace=%d\n \
FLAGS_ptintf_userCarSpace=%d\n \
FLAGS_ptintf_selectedCarport=%d\n \
FLAGS_ptintf_ultrarRadar=%d\n \
FLAGS_ptintf_fapa=%d\n \
FLAGS_ptintf_vehicle=%d\n \
",FLAGS_use_dataAcquisition,FLAGS_use_ydutool,FLAGS_use_aiCarport,FLAGS_use_ultrasonic,FLAGS_use_debugPtintf, \
FLAGS_ptintf_fusCarportList,FLAGS_ptintf_fusSelectedCarport,FLAGS_ptintf_location,FLAGS_ptintf_decision, \
FLAGS_ptintf_carSpace, FLAGS_ptintf_userCarSpace,FLAGS_ptintf_selectedCarport,FLAGS_ptintf_ultrarRadar,FLAGS_ptintf_fapa, \
FLAGS_ptintf_vehicle);
以上就是C/C++读取配置文件的方式小结的详细内容，更多关于C++读取配置文件的资料请关注其它相关文章！
