TerminalShell: add support for Windows

src/common/processing_linux.c

@@ -0,0 +1,38 @@
+#include "fastfetch.h"
+#include "common/processing.h"
+#include "common/io.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/wait.h>
+
+const char* ffProcessAppendStdOut(FFstrbuf* buffer, char* const argv[])
+{
+    int pipes[2];
+
+    if(pipe(pipes) == -1)
+        return "pipe() failed";
+
+    pid_t childPid = fork();
+    if(childPid == -1)
+        return "fork() failed";
+
+    //Child
+    if(childPid == 0)
+    {
+        dup2(pipes[1], STDOUT_FILENO);
+        close(pipes[0]);
+        close(pipes[1]);
+        close(STDERR_FILENO);
+        execvp(argv[0], argv);
+        exit(901);
+    }
+
+    //Parent
+    close(pipes[1]);
+    waitpid(childPid, NULL, 0);
+    ffAppendFDBuffer(pipes[0], buffer);
+    close(pipes[0]);
+
+    return NULL;
+}