The beginnings of DMR Id to callsign lookups.

DMRLookup.cpp

@@ -0,0 +1,78 @@
+/*
+*   Copyright (C) 2016 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 "DMRLookup.h"
+#include "Log.h"
+
+#include <cstdio>
+#include <cstring>
+#include <cctype>
+
+CDMRLookup::CDMRLookup(const std::string& filename) :
+m_filename(filename)
+{
+}
+
+CDMRLookup::~CDMRLookup()
+{
+}
+
+bool CDMRLookup::read()
+{
+	FILE* fp = ::fopen(m_filename.c_str(), "rt");
+	if (fp == NULL) {
+		LogWarning("Cannot open the DMR Id lookup file - %s", m_filename.c_str());
+		return false;
+	}
+
+	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);
+			for (char* p = p2; *p != 0x00U; p++)
+				*p = ::toupper(*p);
+
+			m_table[id] = std::string(p2);
+		}
+	}
+
+	LogInfo("Loaded %u DMR Ids to the callsign lookup table", m_table.size());
+
+	return true;
+}
+
+std::string CDMRLookup::find(unsigned int id) const
+{
+	std::string callsign;
+
+	try {
+		callsign = m_table.at(id);
+	} catch (std::out_of_range& e) {
+		char text[10U];
+		::sprintf(text, "%u", id);
+		callsign = std::string(text);
+	}
+
+	return callsign;
+}