329 lines
6.9 KiB
C++
329 lines
6.9 KiB
C++
/*=============================================================================
|
|
# Filename: Client.cpp
|
|
# Author: Bookug Lobert
|
|
# Mail: 1181955272@qq.com
|
|
# Last Modified: 2016-02-23 13:39
|
|
# Description: implement functions in Client.h
|
|
=============================================================================*/
|
|
|
|
#include"Client.h"
|
|
|
|
using namespace std;
|
|
|
|
Client::Client()
|
|
{
|
|
this->ip = Socket::DEFAULT_SERVER_IP;
|
|
this->port = Socket::DEFAULT_CONNECT_PORT;
|
|
}
|
|
|
|
Client::Client(string _ip, unsigned short _port)
|
|
{
|
|
this->ip = _ip;
|
|
this->port = _port;
|
|
}
|
|
|
|
Client::Client(unsigned short _port)
|
|
{
|
|
this->ip = Socket::DEFAULT_SERVER_IP;
|
|
this->port = _port;
|
|
}
|
|
|
|
Client::~Client()
|
|
{
|
|
}
|
|
|
|
bool Client::connectServer()
|
|
{
|
|
bool flag = this->socket.create();
|
|
if (!flag)
|
|
{
|
|
cerr << "cannot create socket. @Client::connectServer" << endl;
|
|
return false;
|
|
}
|
|
|
|
flag = this->socket.connect(this->ip, this->port);
|
|
|
|
if (!flag)
|
|
{
|
|
cerr << "cannot connect to server. @Client::connectServer" << endl;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Client::disconnectServer()
|
|
{
|
|
bool flag = this->socket.close();
|
|
|
|
return flag;
|
|
}
|
|
|
|
bool Client::send(const string& _msg)
|
|
{
|
|
bool flag = this->socket.send(_msg);
|
|
|
|
return flag;
|
|
}
|
|
|
|
bool Client::receiveResponse(string& _recv_msg)
|
|
{
|
|
bool flag = this->socket.recv(_recv_msg);
|
|
|
|
return flag;
|
|
}
|
|
|
|
void Client::run()
|
|
{
|
|
string cmd;
|
|
|
|
#ifdef READLINE_ON
|
|
char *buf, prompt[] = "gsql>";
|
|
//printf("Type `help` for information of all commands\n");
|
|
//printf("Type `help command_t` for detail of command_t\n");
|
|
rl_bind_key('\t', rl_complete);
|
|
//QUERY: should add ';'?
|
|
while(true)
|
|
{
|
|
//BETTER:write in multi lines as in below comments
|
|
buf = readline(prompt);
|
|
if(buf == NULL)
|
|
continue;
|
|
else
|
|
add_history(buf);
|
|
if(strncmp(buf, "help", 4) == 0)
|
|
{
|
|
if(strcmp(buf, "help") == 0)
|
|
{
|
|
//print commands message
|
|
printf("help - print commands message\n");
|
|
printf("quit - quit the console normally\n");
|
|
printf("import - build a database for a given dataset\n");
|
|
printf("load - load an existen database\n");
|
|
printf("unload - unload an existen database\n");
|
|
printf("sparql - load query from the second argument\n");
|
|
printf("show - show the current database's name\n");
|
|
}
|
|
else
|
|
{
|
|
//TODO: help for a given command
|
|
}
|
|
continue;
|
|
}
|
|
else if(strcmp(buf, "quit") == 0)
|
|
break;
|
|
else if(strncmp(buf, "import", 6) != 0 && strncmp(buf, "load", 4) != 0 && strncmp(buf, "unload", 6) != 0 && strncmp(buf, "sparql", 6) != 0 && strncmp(buf, "show", 4) != 0)
|
|
{
|
|
printf("unknown commands\n");
|
|
continue;
|
|
}
|
|
|
|
string query_file;
|
|
string query;
|
|
FILE* fp = stdout; ///default to output on screen
|
|
bool ifredirect = false;
|
|
//BETTER:build a parser for this console
|
|
//spaces/tabs can be before commands
|
|
|
|
if(strncmp(buf, "sparql", 6) == 0)
|
|
{
|
|
//NOTICE: if using query string, '>' is ok to exist!
|
|
char* rp = buf;
|
|
int pos = strlen(buf) - 1;
|
|
while(pos > -1)
|
|
{
|
|
if(*(rp+pos) == '"')
|
|
{
|
|
break;
|
|
}
|
|
else if(*(rp+pos) == '>')
|
|
{
|
|
ifredirect = true;
|
|
break;
|
|
}
|
|
pos--;
|
|
}
|
|
rp += pos;
|
|
//DEBUG:redirect sometimes not work for path query
|
|
|
|
char* p = buf + strlen(buf) - 1;
|
|
if(ifredirect)
|
|
{
|
|
printf("redirected!\n");
|
|
char* tp = p;
|
|
while(*tp == ' ' || *tp == '\t')
|
|
tp--;
|
|
*(tp+1) = '\0';
|
|
tp = rp + 1;
|
|
while(*tp == ' ' || *tp == '\t')
|
|
tp++;
|
|
printf("redirect: %s\n", tp);
|
|
fp = fopen(tp, "w"); //NOTICE:not judge here!
|
|
p = rp - 1; //NOTICE: all separated with ' ' or '\t'
|
|
}
|
|
while(*p == ' ' || *p == '\t' || *p == '"') //set the end of path
|
|
p--;
|
|
*(p+1) = '\0';
|
|
p = buf + 6;
|
|
while(*p == ' ' || *p == '\t') //acquire the start of path
|
|
p++;
|
|
|
|
bool isPath = true;
|
|
if(*p == '"')
|
|
{
|
|
isPath = false;
|
|
p++;
|
|
}
|
|
|
|
char* q;
|
|
if(isPath)
|
|
{
|
|
//TODO: support the soft links(or hard links)
|
|
//there are also readlink and getcwd functions for help
|
|
//http://linux.die.net/man/2/readlink
|
|
//NOTICE:getcwd and realpath cannot acquire the real path of file
|
|
//in the same directory and the program is executing when the
|
|
//system starts running
|
|
//NOTICE: use realpath(p, NULL) is ok, but need to free the memory
|
|
q = realpath(p, NULL); //QUERY:still not work for soft links
|
|
#ifdef DEBUG_PRECISE
|
|
printf("%s\n", p);
|
|
#endif
|
|
if(q == NULL)
|
|
{
|
|
printf("invalid path!\n");
|
|
free(q);
|
|
free(buf);
|
|
continue;
|
|
}
|
|
else
|
|
printf("%s\n", q);
|
|
//query = getQueryFromFile(p);
|
|
query = Util::getQueryFromFile(q);
|
|
}
|
|
else
|
|
{
|
|
//BETTER:check query in ""
|
|
query = string(p);
|
|
}
|
|
|
|
if(query.empty())
|
|
{
|
|
if(isPath)
|
|
free(q);
|
|
//free(resolved_path);
|
|
free(buf);
|
|
if(ifredirect)
|
|
fclose(fp);
|
|
continue;
|
|
}
|
|
|
|
printf("query is:\n%s\n\n", query.c_str());
|
|
if(isPath)
|
|
free(q);
|
|
cmd = string("query ") + query;
|
|
}
|
|
else if(strncmp(buf, "show", 4) == 0)
|
|
{
|
|
cmd = string("show databases");
|
|
}
|
|
else
|
|
{
|
|
cmd = string(buf);
|
|
}
|
|
//DEBUG!
|
|
printf("%s\n", cmd.c_str());
|
|
|
|
free(buf);
|
|
//free(resolved_path);
|
|
#ifdef DEBUG_PRECISE
|
|
printf("after buf freed!\n");
|
|
#endif
|
|
|
|
//interacte with server
|
|
bool flag = this->connectServer();
|
|
if(!flag)
|
|
{
|
|
cerr << "connect server error. @Client::run" << endl;
|
|
if(ifredirect)
|
|
fclose(fp);
|
|
continue;
|
|
}
|
|
|
|
flag = this->send(cmd);
|
|
if(!flag)
|
|
{
|
|
cerr << "sent message error. @Client::run" << endl;
|
|
if(ifredirect)
|
|
fclose(fp);
|
|
continue;
|
|
}
|
|
|
|
string recv_msg;
|
|
flag = this->receiveResponse(recv_msg);
|
|
fprintf(fp, "%s\n", recv_msg.c_str());
|
|
|
|
this->disconnectServer();
|
|
if(!flag)
|
|
{
|
|
cerr << "disconnect server error. @Client::run" << endl;
|
|
if(ifredirect)
|
|
fclose(fp);
|
|
continue;
|
|
}
|
|
}
|
|
//#else
|
|
//while (true)
|
|
//{
|
|
// while(true)
|
|
// {
|
|
// //BETTER:readline and parser
|
|
// cout << "->";
|
|
// string line;
|
|
// getline(cin, line);
|
|
// int line_len = line.size();
|
|
// if (line_len >0 && line[line_len-1] == ';')
|
|
// {
|
|
// line.resize(line_len - 1);
|
|
// cmd += line;
|
|
// break;
|
|
// }
|
|
// cmd += line + "\n";
|
|
// }
|
|
//
|
|
// //cout << "input end" << endl;
|
|
//
|
|
// if(cmd == "quit")
|
|
// {
|
|
// break;
|
|
// }
|
|
//
|
|
// bool flag = this->connectServer();
|
|
// if (!flag)
|
|
// {
|
|
// cerr << "connect server error. @Client::run" << endl;
|
|
// continue;
|
|
// }
|
|
//
|
|
// flag = this->send(cmd);
|
|
// if (!flag)
|
|
// {
|
|
// cerr << "sent message error. @Client::run" << endl;
|
|
// continue;
|
|
// }
|
|
//
|
|
// string recv_msg;
|
|
// flag = this->receiveResponse(recv_msg);
|
|
// cout << recv_msg << endl;
|
|
//
|
|
// this->disconnectServer();
|
|
// if (!flag)
|
|
// {
|
|
// cerr << "disconnect server error. @Client::run" << endl;
|
|
// continue;
|
|
// }
|
|
//}
|
|
#endif
|
|
}
|
|
|