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#!/usr/bin/env ruby
GROUPS = [
"generic",
"string",
"list",
"set",
"sorted_set",
"hash",
"pubsub",
"transactions",
"connection",
"server",
"scripting",
"hyperloglog",
"cluster",
"geo",
"stream"
].freeze
GROUPS_BY_NAME = Hash[*
GROUPS.each_with_index.map do |n,i|
[n,i]
end.flatten
].freeze
def argument arg
if "block" == arg["type"]
name = arg["block"].map do |entry|
argument entry
end.join " "
else
name = arg["name"].is_a?(Array) ? arg["name"].join(" ") : arg["name"]
name = arg["enum"].join "|" if "enum" == arg["type"]
name = arg["command"] + (name ? " " + name : "") if arg["command"]
end
if arg["multiple"]
name = "#{name} [#{name} ...]"
end
if arg["optional"]
name = "[#{name}]"
end
name
end
def arguments command
return "-" unless command["arguments"]
command["arguments"].map do |arg|
argument arg
end.join " "
end
def commands
return @commands if @commands
require "rubygems"
require "net/http"
require "net/https"
require "json"
require "uri"
url = URI.parse "https://raw.githubusercontent.com/redis/redis-doc/master/commands.json"
client = Net::HTTP.new url.host, url.port
client.use_ssl = true
response = client.get url.path
if response.is_a?(Net::HTTPSuccess)
@commands = JSON.parse(response.body)
else
response.error!
end
end
def generate_groups
GROUPS.map do |n|
"\"#{n}\""
end.join(",\n ");
end
def generate_commands
commands.to_a.sort do |x,y|
x[0] <=> y[0]
end.map do |key, command|
group = GROUPS_BY_NAME[command["group"]]
if group.nil?
STDERR.puts "Please update groups array in #{__FILE__}"
raise "Unknown group #{command["group"]}"
end
ret = <<-SPEC
{ "#{key}",
"#{arguments(command)}",
"#{command["summary"]}",
#{group},
"#{command["since"]}" }
SPEC
ret.strip
end.join(",\n ")
end
# Write to stdout
puts <<-HELP_H
/* Automatically generated by #{__FILE__}, do not edit. */
#ifndef __REDIS_HELP_H
#define __REDIS_HELP_H
static char *commandGroups[] = {
#{generate_groups}
};
struct commandHelp {
char *name;
char *params;
char *summary;
int group;
char *since;
} commandHelp[] = {
#{generate_commands}
};
#endif
HELP_H
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