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/*
* Utils.cpp
*
* Created on: 2014. 6. 10.
* Author: oskwon
*/
#include <errno.h>
#include <stdarg.h>
#include <string.h>
#include <dirent.h>
#include <signal.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <sstream>
#include <fstream>
#include "Util.h"
#include "Logger.h"
using namespace std;
//----------------------------------------------------------------------
std::string Util::ultostr(int64_t data)
{
std::stringstream ss;
ss << data;
return ss.str();
}
//----------------------------------------------------------------------
int Util::strtollu(std::string data)
{
long long retval;
std::stringstream ss;
try {
ss.str(data);
ss >> retval;
}
catch(...) {
return -1;
}
return retval;
}
//----------------------------------------------------------------------
std::string Util::trim(std::string& s, const std::string& drop)
{
std::string r = s.erase(s.find_last_not_of(drop) + 1);
return r.erase(0, r.find_first_not_of(drop));
}
//----------------------------------------------------------------------
int Util::split(std::string data, const char delimiter, std::vector<string>& tokens)
{
std::stringstream data_stream(data);
for(std::string token; std::getline(data_stream, token, delimiter); tokens.push_back(trim(token)));
return tokens.size();
}
//----------------------------------------------------------------------
bool Util::split_key_value(std::string data, std::string delimiter, std::string &key, std::string &value)
{
int idx = data.find(delimiter);
if (idx == string::npos) {
WARNING("split key & value (data : %s, delimiter : %s)", data.c_str(), delimiter.c_str());
return false;
}
key = data.substr(0, idx);
value = data.substr(idx+1, data.length()-idx);
return true;
}
//----------------------------------------------------------------------
void Util::vlog(const char * format, ...) throw()
{
static char vlog_buffer[MAX_PRINT_LEN];
memset(vlog_buffer, 0, MAX_PRINT_LEN);
va_list args;
va_start(args, format);
vsnprintf(vlog_buffer, MAX_PRINT_LEN-1, format, args);
va_end(args);
WARNING("%s", vlog_buffer);
}
//----------------------------------------------------------------------
std::string Util::host_addr()
{
std::stringstream ss;
struct sockaddr_in addr;
socklen_t addrlen = sizeof(addr);
getpeername(0, (struct sockaddr*)&addr, &addrlen);
ss << inet_ntoa(addr.sin_addr);
return ss.str();
}
//-------------------------------------------------------------------------------
std::vector<int> Util::find_process_by_name(std::string name, int mypid)
{
std::vector<int> pidlist;
char cmdlinepath[256] = {0};
DIR* d = opendir("/proc");
if (d != 0) {
struct dirent* de;
while ((de = readdir(d)) != 0) {
int pid = atoi(de->d_name);
if (pid > 0) {
sprintf(cmdlinepath, "/proc/%s/cmdline", de->d_name);
std::string cmdline;
std::ifstream cmdlinefile(cmdlinepath);
std::getline(cmdlinefile, cmdline);
if (!cmdline.empty()) {
size_t pos = cmdline.find('\0');
if (pos != string::npos)
cmdline = cmdline.substr(0, pos);
pos = cmdline.rfind('/');
if (pos != string::npos)
cmdline = cmdline.substr(pos + 1);
if ((name == cmdline) && ((mypid != pid) || (mypid == 0))) {
pidlist.push_back(pid);
}
}
}
}
closedir(d);
}
return pidlist;
}
//-------------------------------------------------------------------------------
void Util::kill_process(int pid)
{
int result = kill(pid, SIGINT);
DEBUG("SEND SIGINT to %d, result : %d", pid, result);
sleep(1);
}
//----------------------------------------------------------------------
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