Renamed daemon folder to process and added Subprocess class to it

daemon/daemonize.h

@@ -1,9 +0,0 @@
-#pragma once
-#ifndef MESSMER_CPPUTILS_DAEMON_DAEMONIZE_H
-#define MESSMER_CPPUTILS_DAEMON_DAEMONIZE_H
-
-namespace cpputils {
-    void daemonize();
-}
-
-#endif

process/daemonize.cpp

@@ -44,7 +44,7 @@ namespace cpputils {
                 exit(EXIT_FAILURE);
             }
 
-            // Close out the standard file descriptors. The daemon can't use them anyhow.
+            // Close out the standard file descriptors. The process can't use them anyhow.
             close(STDIN_FILENO);
             close(STDOUT_FILENO);
             close(STDERR_FILENO);

process/daemonize.h

@@ -0,0 +1,9 @@
+#pragma once
+#ifndef MESSMER_CPPUTILS_PROCESS_DAEMONIZE_H
+#define MESSMER_CPPUTILS_PROCESS_DAEMONIZE_H
+
+namespace cpputils {
+    void daemonize();
+}
+
+#endif

process/subprocess.cpp

@@ -0,0 +1,29 @@
+#include "subprocess.h"
+#include <cstdio>
+#include <stdexcept>
+
+using std::string;
+
+namespace cpputils {
+    string Subprocess::call(const string &command) {
+        //TODO Exception safety
+        FILE *subprocessOutput = popen(command.c_str(), "r");
+        if (!subprocessOutput)
+        {
+            throw std::runtime_error("Error starting subprocess "+command);
+        }
+
+        string result;
+        char buffer[1024];
+        while(fgets(buffer, sizeof(buffer), subprocessOutput) != NULL) {
+            result += buffer;
+        }
+
+        auto returncode = pclose(subprocessOutput);
+        if(WEXITSTATUS(returncode) != 0) {
+            throw std::runtime_error("Subprocess \""+command+"\" exited with code "+std::to_string(WEXITSTATUS(returncode)));
+        }
+
+        return result;
+    }
+}

process/subprocess.h

@@ -0,0 +1,15 @@
+#pragma once
+#ifndef MESSMER_CPPUTILS_PROCESS_SUBPROCESS_H
+#define MESSMER_CPPUTILS_PROCESS_SUBPROCESS_H
+
+#include <string>
+
+namespace cpputils {
+    //TODO Test
+    class Subprocess {
+    public:
+        static std::string call(const std::string &command);
+    };
+}
+
+#endif

test/process/daemonize_include_test.cpp

@@ -1,4 +1,4 @@
-#include "../../daemon/daemonize.h"
+#include "../../process/daemonize.h"
 
 // Test the header can be included without needing additional dependencies
 

test/process/subprocess_include_test.cpp

@@ -0,0 +1,4 @@
+#include "../../process/subprocess.h"
+
+// Test the header can be included without needing additional dependencies
+