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require 'puppet/application'
class Formatter
def initialize(width)
@width = width
end
def wrap(txt, opts)
return "" unless txt && !txt.empty?
work = (opts[:scrub] ? scrub(txt) : txt)
indent = (opts[:indent] ? opts[:indent] : 0)
textLen = @width - indent
patt = Regexp.new("^(.{0,#{textLen}})[ \n]")
prefix = " " * indent
res = []
while work.length > textLen
if work =~ patt
res << $1
work.slice!(0, $MATCH.length)
else
res << work.slice!(0, textLen)
end
end
res << work if work.length.nonzero?
prefix + res.join("\n#{prefix}")
end
def header(txt, sep = "-")
"\n#{txt}\n" + sep * txt.size
end
private
def scrub(text)
# For text with no carriage returns, there's nothing to do.
return text if text !~ /\n/
indent = nil
# If we can match an indentation, then just remove that same level of
# indent from every line.
if text =~ /^(\s+)/
indent = $1
return text.gsub(/^#{indent}/,'')
else
return text
end
end
end
class TypeDoc
def initialize
@format = Formatter.new(76)
@types = {}
Puppet::Type.loadall
Puppet::Type.eachtype { |type|
next if type.name == :component
@types[type.name] = type
}
end
def list_types
puts "These are the types known to puppet:\n"
@types.keys.sort { |a, b|
a.to_s <=> b.to_s
}.each do |name|
type = @types[name]
s = type.doc.gsub(/\s+/, " ")
n = s.index(".")
if n.nil?
s = ".. no documentation .."
elsif n > 45
s = s[0, 45] + " ..."
else
s = s[0, n]
end
printf "%-15s - %s\n", name, s
end
end
def format_type(name, opts)
name = name.to_sym
unless @types.has_key?(name)
puts "Unknown type #{name}"
return
end
type = @types[name]
puts @format.header(name.to_s, "=")
puts @format.wrap(type.doc, :indent => 0, :scrub => true) + "\n\n"
puts @format.header("Parameters")
if opts[:parameters]
format_attrs(type, [:property, :param])
else
list_attrs(type, [:property, :param])
end
if opts[:meta]
puts @format.header("Meta Parameters")
if opts[:parameters]
format_attrs(type, [:meta])
else
list_attrs(type, [:meta])
end
end
if type.providers.size > 0
puts @format.header("Providers")
if opts[:providers]
format_providers(type)
else
list_providers(type)
end
end
end
# List details about attributes
def format_attrs(type, attrs)
docs = {}
type.allattrs.each do |name|
kind = type.attrtype(name)
docs[name] = type.attrclass(name).doc if attrs.include?(kind) && name != :provider
end
docs.sort { |a,b|
a[0].to_s <=> b[0].to_s
}.each { |name, doc|
print "\n- **#{name}**"
if type.key_attributes.include?(name) and name != :name
puts " (*namevar*)"
else
puts ""
end
puts @format.wrap(doc, :indent => 4, :scrub => true)
}
end
# List the names of attributes
def list_attrs(type, attrs)
params = []
type.allattrs.each do |name|
kind = type.attrtype(name)
params << name.to_s if attrs.include?(kind) && name != :provider
end
puts @format.wrap(params.sort.join(", "), :indent => 4)
end
def format_providers(type)
type.providers.sort { |a,b|
a.to_s <=> b.to_s
}.each { |prov|
puts "\n- **#{prov}**"
puts @format.wrap(type.provider(prov).doc, :indent => 4, :scrub => true)
}
end
def list_providers(type)
list = type.providers.sort { |a,b|
a.to_s <=> b.to_s
}.join(", ")
puts @format.wrap(list, :indent => 4)
end
end
class Puppet::Application::Describe < Puppet::Application
banner "puppet describe [options] [type]"
should_not_parse_config
option("--short", "-s", "Only list parameters without detail") do |arg|
options[:parameters] = false
end
option("--providers","-p")
option("--list", "-l")
option("--meta","-m")
def help
<<-HELP
puppet-describe(8) -- Display help about resource types
========
SYNOPSIS
--------
Prints help about Puppet resource types, providers, and metaparameters.
USAGE
-----
puppet describe [-h|--help] [-s|--short] [-p|--providers] [-l|--list] [-m|--meta]
OPTIONS
-------
* --help:
Print this help text
* --providers:
Describe providers in detail for each type
* --list:
List all types
* --meta:
List all metaparameters
* --short:
List only parameters without detail
EXAMPLE
-------
$ puppet describe --list
$ puppet describe file --providers
$ puppet describe user -s -m
AUTHOR
------
David Lutterkort
COPYRIGHT
---------
Copyright (c) 2011 Puppet Labs, LLC Licensed under the Apache 2.0 License
HELP
end
def preinit
options[:parameters] = true
end
def main
doc = TypeDoc.new
if options[:list]
doc.list_types
else
options[:types].each { |name| doc.format_type(name, options) }
end
end
def setup
options[:types] = command_line.args.dup
handle_help(nil) unless options[:list] || options[:types].size > 0
$stderr.puts "Warning: ignoring types when listing all types" if options[:list] && options[:types].size > 0
end
end
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