Serial port field is now drop-down list

serial_port/serial_port.cpp

@@ -13,6 +13,73 @@
 
 #include "serial_port.h"
 
+#include <algorithm> // For std::sort only
+
+/*---------------------------------------------------------*\
+|  getSerialPorts(): returns the list of available serial   |
+|  ports in the system                                      |
+\*---------------------------------------------------------*/
+
+std::vector<std::string> serial_port::getSerialPorts()
+{
+    /*-----------------------------------------------------------------------------------*\
+    | Ported from https://github.com/nkinar/GetComPortList/blob/master/GetComPortList.cpp |
+    \*-----------------------------------------------------------------------------------*/
+    std::vector<std::string> port_list;
+#if defined (_WIN32) || defined( _WIN64)
+    const uint32_t CHAR_NUM = 1024;
+    const uint32_t MAX_PORTS = 255;
+    const std::string COM_STR = "COM";
+    char path[CHAR_NUM];
+    for (uint32_t k = 0; k < MAX_PORTS; k++)
+    {
+        std::string port_name = COM_STR + std::to_string(k);
+        DWORD test = QueryDosDevice(port_name.c_str(), path, CHAR_NUM);
+        if (test == 0) continue;
+        port_list.push_back(port_name);
+    }
+#endif
+#if defined (__linux__)
+    namespace fs = std::filesystem;
+    const std::string DEV_PATH = "/dev/serial/by-id";
+    try
+    {
+        fs::path p(DEV_PATH);
+        if (!fs::exists(DEV_PATH)) return port_list;
+        for (fs::directory_entry de: fs::directory_iterator(p))
+        {
+            if (fs::is_symlink(de.symlink_status()))
+            {
+                fs::path symlink_points_at = fs::read_symlink(de);
+                port_list.push_back(std::string("/dev/")+symlink_points_at.filename().c_str());
+            }
+        }
+    }
+    catch (const fs::filesystem_error &ex) {}
+#endif
+#if defined(__APPLE__)
+    namespace fs = std::filesystem;
+    const std::string DEV_PATH = "/dev";
+    const std::regex base_regex(R"(\/dev\/(tty|cu)\..*)");
+    try
+    {
+        fs::path p(DEV_PATH);
+        if (!fs::exists(DEV_PATH)) return port_list;
+        for (fs::directory_entry de: fs::directory_iterator(p)) {
+            fs::path canonical_path = fs::canonical(de);
+            std::string name = canonical_path.generic_string();
+            std::smatch res;
+            std::regex_search(name, res, base_regex);
+            if (res.empty()) continue;
+            port_list.push_back(canonical_path.generic_string());
+        }
+    }
+    catch (const fs::filesystem_error &ex) {}
+#endif
+    std::sort(port_list.begin(), port_list.end());
+    return port_list;
+}
+
 /*---------------------------------------------------------*\
 |  serial_port (constructor)                                |
 |    The default constructor does not initialize the serial |

serial_port/serial_port.h

@@ -16,6 +16,8 @@
 
 #include <string.h>
 #include <stdio.h>
+#include <vector>
+#include <string>
 
 #ifdef _WIN32
 /*---------------------------------------------------------*\
@@ -103,6 +105,8 @@ enum
 class serial_port
 {
 public:
+    static std::vector<std::string> getSerialPorts();
+
     serial_port();
     serial_port(const char * name, unsigned int baud);
     serial_port(const char *            name,