Trying to get prompt

src/get_prompt.bash

@@ -0,0 +1,7 @@
+ver=$(bash --version | head -n 1 | awk '{print $4}' | grep -o "\.\..")
+check_ver=$(echo -e "${ver}\n4.3" | sort -V | head -n 1)
+if [[ "${ver}" == "${check_ver}" ]]; then
+  echo "[${USER}@${HOSTNAME} ${PWD##*/}]$ "
+else
+  echo "${PS1@P}"
+fi

src/main.zig

@@ -5,6 +5,49 @@ fn clear() !void {
     const stdout = std.io.getStdOut().writer();
     try stdout.print("\u{001b}[H\u{001b}[J", .{});
 }
+const Pipe = packed struct {
+    const fd_t = std.posix.fd_t;
+    read: fd_t,
+    write: fd_t,
+};
+
+fn pipe() !Pipe {
+    return @bitCast(try std.posix.pipe());
+}
+
+fn getPrompt() ![]const u8 {
+    const p = try pipe();
+
+    const close = std.posix.close;
+    const dup2 = std.posix.dup2;
+    const STDIN_FILENO = std.posix.STDIN_FILENO;
+    const STDOUT_FILENO = std.posix.STDOUT_FILENO;
+    const STDERR_FILENO = std.posix.STDERR_FILENO;
+    const script = @embedFile("./get_prompt.bash");
+
+    if (std.posix.fork()) |pid| {
+        if (pid == 0) {
+            close(p.read);
+
+            try dup2(p.write, STDOUT_FILENO);
+            close(STDIN_FILENO);
+            close(STDERR_FILENO); // Do not print errors to the screen
+
+            // Command-line arguments (must include program name as first argument)
+            // const args = [_:null]?[*:0]const u8{ "bash", "-i", "-c", script, null };
+            var args = [_:null]?[*:0]const u8{ "bash", "-i", "-c", script, null };
+            try std.posix.execvpeZ("bash", &args, std.c.environ);
+
+            // std.posix.execvpeZ("bash", @as([*:null]const ?[*:0]const u8, &args[0]), std.os.environ);
+            _ = std.posix.execvpeZ("bash", @as([*:null]const ?[*:0]const u8, &args[0]), std.os.environ);
+            // kill the child
+            std.process.exit(0);
+        } else {}
+        return "";
+    } else |err| {
+        return err;
+    }
+}
 
 pub fn main() !void {
     try clear();
@@ -13,6 +56,8 @@ pub fn main() !void {
     var ln = Linenoise.init(allocator);
     defer ln.deinit();
 
+    _ = try getPrompt();
+
     while (try ln.linenoise("hello> ")) |input| {
         defer allocator.free(input);
         std.debug.print("input: {s}\n", .{input});