utils/generate-command-help.rb

   1 #!/usr/bin/env ruby
   2
   3 def argument arg
   4   name = arg["name"].is_a?(Array) ? arg["name"].join(" ") : arg["name"]
   5   name = arg["enum"].join "|" if "enum" == arg["type"]
   6   name = arg["command"] + " " + name if arg["command"]
   7   if arg["multiple"]
   8     name = "#{name} [#{name} ...]"
   9   end
  10   if arg["optional"]
  11     name = "[#{name}]"
  12   end
  13   name
  14 end
  15
  16 def arguments command
  17   return "-" unless command["arguments"]
  18   command["arguments"].map do |arg|
  19     argument arg
  20   end.join " "
  21 end
  22
  23 def commands
  24   return @commands if @commands
  25
  26   require "net/http"
  27   require "net/https"
  28   require "json"
  29   require "uri"
  30
  31   url = URI.parse "https://github.com/antirez/redis-doc/raw/master/commands.json"
  32   client = Net::HTTP.new url.host, url.port
  33   client.use_ssl = true
  34   response = client.get url.path
  35   if response.is_a?(Net::HTTPSuccess)
  36     @commands = JSON.parse(response.body)
  37   else
  38     response.error!
  39   end
  40 end
  41
  42 def generate_commands
  43   commands.to_a.sort do |x,y|
  44     x[0] <=> y[0]
  45   end.map do |key, command|
  46     <<-SPEC
  47 { "#{key}",
  48     "#{arguments(command)}",
  49     "#{command["summary"]}",
  50     COMMAND_GROUP_#{command["group"].upcase},
  51     "#{command["since"]}" }
  52     SPEC
  53   end.join(",  ")
  54 end
  55
  56 # Write to stdout
  57 tmpl = File.read "./utils/help.h"
  58 puts "\n// Auto-generated, do not edit.\n" + tmpl.sub("__COMMANDS__", generate_commands)
  59