codecrafters submit [skip ci]

1 files changed, 37 insertions, 0 deletions

diff --git a/src/shell.zig b/src/shell.zig
new file mode 100644
index 0000000..c5aded1
--- /dev/null
+++ b/src/shell.zig
@@ -0,0 +1,37 @@
+const std = @import("std");
+const parser = @import("parser.zig");
+const builtins = @import("builtins.zig");
+const path = @import("path.zig");
+const executor = @import("executor.zig");
+
+pub fn executeCommand(
+    allocator: std.mem.Allocator,
+    stdout: anytype,
+    cmd_name: []const u8,
+    args: ?[]const u8,
+) !builtins.CommandResult {
+    if (std.mem.eql(u8, cmd_name, "exit")) return builtins.executeExit();
+
+    if (std.mem.eql(u8, cmd_name, "echo")) {
+        try builtins.executeEcho(stdout, args);
+        return .continue_loop;
+    }
+
+    if (std.mem.eql(u8, cmd_name, "type")) {
+        try builtins.executeType(allocator, stdout, args);
+        return .continue_loop;
+    }
+
+    if (try path.findInPath(allocator, cmd_name)) |program_path| {
+        defer allocator.free(program_path);
+
+        const argv = try parser.parseArgs(allocator, cmd_name, args);
+        defer allocator.free(argv);
+
+        try executor.runExternalProgram(allocator, program_path, argv);
+        return .continue_loop;
+    }
+
+    try stdout.print("{s}: command not found\n", .{cmd_name});
+    return .continue_loop;
+}