int TCommandHandler::TryExec(const std::string &commandName,
const std::vector<std::string> &commandArgs) {
const auto it = Commands.find(commandName);
if (it == Commands.end()) {
std::cerr << "Invalid command " << commandName << "!" << std::endl;
return EXIT_FAILURE;
}
ICmd *cmd = it->second.get();
PORTO_ASSERT(cmd);
if (!cmd->ValidArgs(commandArgs)) {
Usage(cmd->GetName().c_str());
return EXIT_FAILURE;
}
CurrentCmd = cmd;
// in case client closes pipe we are writing to in the protobuf code
(void)RegisterSignal(SIGPIPE, SIG_IGN);
(void)RegisterSignal(SIGINT, SigInt);
(void)RegisterSignal(SIGTERM, SigInt);
TCommandEnviroment commandEnv{*this, commandArgs};
int ret = cmd->Execute(&commandEnv);
if (cmd->GotSignal())
return -cmd->InterruptedSignal;
else
return ret;
}
static int TryExec(int argc, char *argv[]) {
string name(argv[1]);
if (commands.find(name) == commands.end()) {
std::cerr << "Invalid command " << name << "!" << std::endl;
return EXIT_FAILURE;
}
ICmd *cmd = commands[name];
if (!cmd->ValidArgs(argc - 2, argv + 2)) {
Usage(cmd->GetName().c_str());
return EXIT_FAILURE;
}
CurrentCmd = cmd;
// in case client closes pipe we are writing to in the protobuf code
(void)RegisterSignal(SIGPIPE, SIG_IGN);
(void)RegisterSignal(SIGINT, SigInt);
(void)RegisterSignal(SIGTERM, SigInt);
int ret = cmd->Execute(argc - 2, argv + 2);
if (cmd->GotSignal())
return -cmd->InterruptedSignal;
else
return ret;
}
void TCommandHandler::Usage(const char *command) {
ICmd *cmd = Commands["help"].get();
PORTO_ASSERT(cmd);
std::vector<std::string> args;
if (command)
args.push_back(command);
TCommandEnviroment commandEnv{*this, args};
cmd->Execute(&commandEnv);
}
BOOL CommandManager::Execute( LPCTSTR cmdline, tstring& replyText )
{
//分割并整理命令行的各个部分
TStringVector parts;
splitByChar(cmdline, parts, ' ');
TStringVector::iterator iter = parts.begin();
while (iter != parts.end())
{
tstring& part = *iter;
trim(part);
if (part.size() == 0)
{
iter = parts.erase(iter);
}
else
{
iter++;
}
}
//检查是否有可用的部分
if (parts.size() == 0)
{
replyText = _T("invalid command.");
return FALSE;
}
//查找可用的命令
tstring& cmdname = parts[0];
makeLower(cmdname);
CommandMap::iterator cmdIter = m_cmdMap.find(cmdname);
if (cmdIter == m_cmdMap.end())
{
replyText = _T("no such command.");
return FALSE;
}
//执行命令
ICmd* pCmd = cmdIter->second;
BOOL bExecuteOK = pCmd->Execute(parts, replyText, m_env);
return bExecuteOK;
}
int TCommandHandler::TryExec(const std::string &commandName,
const std::vector<std::string> &commandArgs) {
const auto it = Commands.find(commandName);
if (it == Commands.end()) {
std::cerr << "Invalid command " << commandName << "!" << std::endl;
return EXIT_FAILURE;
}
ICmd *cmd = it->second.get();
PORTO_ASSERT(cmd);
if (!cmd->ValidArgs(commandArgs)) {
Usage(cmd->GetName().c_str());
return EXIT_FAILURE;
}
// in case client closes pipe we are writing to in the protobuf code
Signal(SIGPIPE, SIG_IGN);
TCommandEnviroment commandEnv{*this, commandArgs};
commandEnv.NeedArgs = cmd->NeedArgs;
return cmd->Execute(&commandEnv);
}
static void Usage(const char *command) {
ICmd *cmd = commands["help"];
char *argv[] = { (char *)command, NULL };
cmd->Execute(command ? 1 : 0, argv);
}