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sdrangel/sdrbase/util/serialutil.cpp

124 lines
4.2 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2020 Kacper Michajłow <kasper93@gmail.com> //
// Copyright (C) 2020 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
// //
// 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 as version 3 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 V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <string.h>
#include <regex>
#if defined(_WIN32)
#include <Windows.h>
#include <winbase.h>
#include <tchar.h>
#elif defined(__linux__)
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#endif
#include "serialutil.h"
#if defined(_WIN32)
void SerialUtil::getComPorts(std::vector<std::string>& comPorts, const std::string& regexStr)
{
(void) regexStr;
TCHAR lpTargetPath[5000]; // buffer to store the path of the COMPORTS
DWORD test;
bool gotPort = 0; // in case the port is not found
char portName[100];
for (int i = 0; i<255; i++) // checking ports from COM0 to COM255
{
sprintf(portName, "COM%d", i);
test = QueryDosDeviceA((LPCSTR)portName, (LPSTR)lpTargetPath, 5000);
// Test the return value and error if any
if (test != 0) //QueryDosDevice returns zero if it didn't find an object
{
comPorts.push_back(std::string(portName));
}
if (::GetLastError() == ERROR_INSUFFICIENT_BUFFER)
{
lpTargetPath[10000]; // in case the buffer got filled, increase size of the buffer.
continue;
}
}
}
#elif defined(__linux__)
void SerialUtil::getComPorts(std::vector<std::string>& comPorts, const std::string& regexStr)
{
int n;
struct dirent **namelist;
comPorts.clear();
const char* sysdir = "/sys/class/tty/";
struct stat fileStat;
std::regex devRegex(regexStr);
std::smatch devMatch;
std::string devString = "/dev/";
// Scan through /sys/class/tty - it contains all tty-devices in the system
n = scandir(sysdir, &namelist, NULL, alphasort);
if (n < 0)
{
perror("scandir");
}
else
{
while (n--)
{
if (strcmp(namelist[n]->d_name, "..") && strcmp(namelist[n]->d_name, "."))
{
// Construct full absolute file path
std::string fullpath = sysdir;
std::string devName = std::string(namelist[n]->d_name);
fullpath += devName;
fullpath += std::string("/device");
if (lstat(fullpath.c_str(), &fileStat) == 0)
{
if (regexStr.size() != 0)
{
std::regex_search(devName, devMatch, devRegex);
if (devMatch.size() != 0) {
comPorts.push_back(devString + devName);
}
}
else
{
comPorts.push_back(devString + devName);
}
}
}
free(namelist[n]);
}
free(namelist);
}
}
#else // not supported
void SerialUtil::getComPorts(std::vector<std::string>& comPorts, const std::string& regexStr)
{
(void) comPorts;
(void) regexStr;
}
#endif