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# inspired by https://github.com/ptrofimov/tinyredisclient | |
require 'socket' | |
class TinyRedisClient | |
RN = "\r\n" | |
def initialize(host='localhost', port=6379) | |
@socket = TCPSocket.new(host, port) | |
end | |
def method_missing(method, *args) | |
args.unshift method | |
data = ["*#{args.size}", *args.map {|arg| "$#{arg.to_s.size}#{RN}#{arg}"}] | |
@socket.write(data.join(RN) << RN) | |
parse_response | |
end | |
def parse_response | |
case line = @socket.gets | |
when /^\+(.*)\r\n$/ then $1 | |
when /^:(\d+)\r\n$/ then $1.to_i | |
when /^-(.*)\r\n$/ then raise "Redis error: #{$1}" | |
when /^\$([-\d]+)\r\n$/ | |
$1.to_i >= 0 ? @socket.read($1.to_i+2)[0..-3] : nil | |
when /^\*([-\d]+)\r\n$/ | |
$1.to_i > 0 ? (1..$1.to_i).inject([]) { |a,_| a << parse_response } : nil | |
end | |
end | |
def close | |
@socket.close | |
end | |
end |
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