Function RedisCommand

command/server.go:231–326

RedisCommand returns Array reply of details about all Redis commands

(ctx *Context)

// RedisCommand returns Array reply of details about all Redis commands
func RedisCommand(ctx *Context) {
	count := func(ctx *Context) {
		resp.ReplyInteger(ctx.Out, int64(len(commands)))
	}
	getkeys := func(ctx *Context) {
		args := ctx.Args[1:]
		if len(args) == 0 {
			resp.ReplyError(ctx.Out, "ERR Unknown subcommand or wrong number of arguments.")
			return
		}
		name := args[0]
		cmdInfo, ok := commands[name]
		if !ok {
			resp.ReplyError(ctx.Out, "ERR Invalid command specified")
			return
		}

		if cmdInfo.Cons.Arity > 0 && len(args) != cmdInfo.Cons.Arity {
			resp.ReplyError(ctx.Out, "ERR Invalid number of arguments specified for command")
			return
		}
		if cmdInfo.Cons.Arity < 0 && len(args) < -cmdInfo.Cons.Arity {
			resp.ReplyError(ctx.Out, "ERR Invalid number of arguments specified for command")
			return
		}
		var keys []string
		last := cmdInfo.Cons.LastKey
		if last < 0 {
			last += len(args)
		}
		for i := cmdInfo.Cons.FirstKey; i <= last; i += cmdInfo.Cons.KeyStep {
			keys = append(keys, args[i])
		}
		resp.ReplyArray(ctx.Out, len(keys))
		for _, key := range keys {
			resp.ReplyBulkString(ctx.Out, key)
		}
	}
	info := func(ctx *Context) {
		names := ctx.Args[1:]
		resp.ReplyArray(ctx.Out, len(names))
		for _, name := range names {
			if cmd, ok := commands[name]; ok {
				resp.ReplyArray(ctx.Out, 6)
				resp.ReplyBulkString(ctx.Out, name)
				resp.ReplyInteger(ctx.Out, int64(cmd.Cons.Arity))

				flags := parseFlags(cmd.Cons.Flags)
				resp.ReplyArray(ctx.Out, len(flags))
				for i := range flags {
					resp.ReplyBulkString(ctx.Out, flags[i])
				}

				resp.ReplyInteger(ctx.Out, int64(cmd.Cons.FirstKey))
				resp.ReplyInteger(ctx.Out, int64(cmd.Cons.LastKey))
				resp.ReplyInteger(ctx.Out, int64(cmd.Cons.KeyStep))
			} else {
				resp.ReplyNullBulkString(ctx.Out)