First implementation

helper/exec.hpp

@@ -0,0 +1,31 @@
+#ifndef B89BC3C5_AD59_4765_AA06_8110111D316F
+#define B89BC3C5_AD59_4765_AA06_8110111D316F
+
+#include <cstdio>
+#include <stdexcept>
+
+/// @brief Executes given command and optionally sends buffer to handler
+/// @param cmd is the command
+/// @param handler is the handler(char*)-function
+/// @return Return-code form command
+int exec(const char* cmd, const int *(handler)(char*) = nullptr){
+    const int buf_size = 256;
+    char buf[buf_size];
+
+    // Open execution-pipe
+    FILE *pipe = popen(cmd, "r");
+    
+    if (!pipe) {
+        throw std::runtime_error("popen() failed!");
+    }
+    while (fgets(buf, buf_size, pipe) != nullptr) {
+
+        // When a handler is specified, call it
+        if(handler != nullptr) (*handler)(buf);
+    }
+
+    // Close pipe and read exit-code
+    return WEXITSTATUS(pclose(pipe));
+}
+
+#endif /* B89BC3C5_AD59_4765_AA06_8110111D316F */