1 files changed, 68 insertions, 0 deletions
diff --git a/src/cmd/echo.zig b/src/cmd/echo.zig
new file mode 100644
index 0000000..a11d748
--- /dev/null
+++ b/src/cmd/echo.zig
@@ -0,0 +1,68 @@
+const std = @import("std");
+const Allocator = std.mem.Allocator;
+const print = std.debug.print;
+
+const types = @import("./types.zig");
+const CommandStatus = types.CommandStatus;
+const OutputCapture = types.OutputCapture;
+const InputSource = types.InputSource;
+
+pub const EchoOff = struct {
+    pub fn eval(echo_off: EchoOff, allocator: Allocator, output_capture: ?*OutputCapture, input_source: ?*InputSource) !CommandStatus {
+        _ = echo_off;
+        _ = allocator;
+        _ = output_capture;
+        _ = input_source;
+
+        return CommandStatus{ .Code = 0 };
+    }
+};
+
+pub const EchoOn = struct {
+    pub fn eval(echo_on: EchoOn, allocator: Allocator, output_capture: ?*OutputCapture, input_source: ?*InputSource) !CommandStatus {
+        _ = echo_on;
+        _ = allocator;
+        _ = input_source;
+
+        const output = "ECHO is on\n";
+        if (output_capture) |capture| {
+            try capture.write(output);
+        } else {
+            print("{s}", .{output});
+        }
+        return CommandStatus{ .Code = 0 };
+    }
+};
+
+pub const EchoPlain = struct {
+    pub fn eval(echo_plain: EchoPlain, allocator: Allocator, output_capture: ?*OutputCapture, input_source: ?*InputSource) !CommandStatus {
+        _ = echo_plain;
+        _ = allocator;
+        _ = input_source;
+
+        const output = "ECHO is on\n";
+        if (output_capture) |capture| {
+            try capture.write(output);
+        } else {
+            print("{s}", .{output});
+        }
+        return CommandStatus{ .Code = 0 };
+    }
+};
+
+pub const EchoText = struct {
+    message: []const u8,
+
+    pub fn eval(echo_text: EchoText, allocator: Allocator, output_capture: ?*OutputCapture, input_source: ?*InputSource) !CommandStatus {
+        _ = input_source;
+
+        const output = try std.fmt.allocPrint(allocator, "{s}\n", .{echo_text.message});
+        defer allocator.free(output);
+        if (output_capture) |capture| {
+            try capture.write(output);
+        } else {
+            print("{s}", .{output});
+        }
+        return CommandStatus{ .Code = 0 };
+    }
+};