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[redis.git] / utils / generate-command-help.rb

diff --git a/utils/generate-command-help.rb b/utils/generate-command-help.rb
index 250a2159e9e662730d30069c6ae454e76385f90f..96cccc2bfbc1a8e0be5cb4379c48c434068a1fde 100755 (executable)
--- a/utils/generate-command-help.rb
+++ b/utils/generate-command-help.rb
@@ -1,56 +1,112 @@
 #!/usr/bin/env ruby
 
-require 'net/http'
-require 'net/https'
-require 'json'
-require 'uri'
+GROUPS = [
+  "generic",
+  "string",
+  "list",
+  "set",
+  "sorted_set",
+  "hash",
+  "pubsub",
+  "transactions",
+  "connection",
+  "server"
+].freeze
 
-dest = ARGV[0]
-tmpl = File.read './utils/help.h'
-
-url = URI.parse 'https://github.com/antirez/redis-doc/raw/master/commands.json'
-client = Net::HTTP.new url.host, url.port
-client.use_ssl = true
-res = client.get url.path
+GROUPS_BY_NAME = Hash[*
+  GROUPS.each_with_index.map do |n,i|
+    [n,i]
+  end.flatten
+].freeze
 
 def argument arg
-  name = arg['name'].is_a?(Array) ? arg['name'].join(' ') : arg['name']
-  name = arg['enum'].join '|' if 'enum' == arg['type']
-  name = arg['command'] + ' ' + name if arg['command']
-  if arg['multiple']
-    name = "(#{name})"
-    name += arg['optional'] ? '*' : '+'
-  elsif arg['optional']
-    name = "(#{name})?"
+  name = arg["name"].is_a?(Array) ? arg["name"].join(" ") : arg["name"]
+  name = arg["enum"].join "|" if "enum" == arg["type"]
+  name = arg["command"] + " " + name if arg["command"]
+  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|
+  return "-" unless command["arguments"]
+  command["arguments"].map do |arg|
     argument arg
-  end.join ' '
+  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://github.com/antirez/redis-doc/raw/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
 
-case res
-when Net::HTTPSuccess
-  first = true
-  commands = JSON.parse(res.body)
-  c = commands.map do |key, command|
-    buf = if first
-      first = false
-      ' '
-    else
-      "\n  ,"
+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
-    buf += " { \"#{key}\"\n" +
-    "  , \"#{arguments(command)}\"\n" +
-    "  , \"#{command['summary']}\"\n" +
-    "  , COMMAND_GROUP_#{command['group'].upcase}\n" +
-    "  , \"#{command['since']}\" }"
-  end.join("\n")
-  puts "\n// Auto-generated, do not edit.\n" + tmpl.sub('__COMMANDS__', c)
-else
-  res.error!
-end
\ No newline at end of file
+
+    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
+