MMDVM_CM/YSF2NXDN/NXDNLookup.cpp
2018-05-28 11:02:35 -04:00

180 lines
3.1 KiB
C++

/*
* Copyright (C) 2016,2017,2018 by Jonathan Naylor G4KLX
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "NXDNLookup.h"
#include "Timer.h"
#include "Log.h"
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cctype>
CNXDNLookup::CNXDNLookup(const std::string& filename, unsigned int reloadTime) :
CThread(),
m_filename(filename),
m_reloadTime(reloadTime),
m_table(),
m_cstable(),
m_mutex(),
m_stop(false)
{
}
CNXDNLookup::~CNXDNLookup()
{
}
bool CNXDNLookup::read()
{
bool ret = load();
if (m_reloadTime > 0U)
run();
return ret;
}
void CNXDNLookup::entry()
{
LogInfo("Started the NXDN Id lookup reload thread");
CTimer timer(1U, 3600U * m_reloadTime);
timer.start();
while (!m_stop) {
sleep(1000U);
timer.clock();
if (timer.hasExpired()) {
load();
timer.start();
}
}
LogInfo("Stopped the NXDN Id lookup reload thread");
}
void CNXDNLookup::stop()
{
if (m_reloadTime == 0U) {
delete this;
return;
}
m_stop = true;
wait();
}
std::string CNXDNLookup::findCS(unsigned int id)
{
std::string callsign;
if (id == 0xFFFFU)
return std::string("ALL");
m_mutex.lock();
try {
callsign = m_table.at(id);
} catch (...) {
char text[10U];
::sprintf(text, "%u", id);
callsign = std::string(text);
}
m_mutex.unlock();
return callsign;
}
unsigned int CNXDNLookup::findID(std::string cs)
{
unsigned int nxdnID;
m_mutex.lock();
try {
nxdnID = m_cstable.at(cs);
} catch (...) {
nxdnID = 0U;
}
m_mutex.unlock();
return nxdnID;
}
bool CNXDNLookup::exists(unsigned int id)
{
m_mutex.lock();
bool found = m_table.count(id) == 1U;
m_mutex.unlock();
return found;
}
bool CNXDNLookup::load()
{
FILE* fp = ::fopen(m_filename.c_str(), "rt");
if (fp == NULL) {
LogWarning("Cannot open the NXDN Id lookup file - %s", m_filename.c_str());
return false;
}
m_mutex.lock();
// Remove the old entries
m_table.clear();
m_cstable.clear();
char buffer[100U];
while (::fgets(buffer, 100U, fp) != NULL) {
if (buffer[0U] == '#')
continue;
char* p1 = ::strtok(buffer, ",\t\r\n");
char* p2 = ::strtok(NULL, ",\t\r\n");
if (p1 != NULL && p2 != NULL) {
unsigned int id = (unsigned int)::atoi(p1);
if (id > 0U) {
for (char* p = p2; *p != 0x00U; p++)
*p = ::toupper(*p);
m_table[id] = std::string(p2);
m_cstable[p2] = id;
}
}
}
m_mutex.unlock();
::fclose(fp);
size_t size = m_table.size();
if (size == 0U)
return false;
LogInfo("Loaded %u Ids to the NXDN callsign lookup table", size);
return true;
}