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Split out ri display code and make pluggable 

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5386 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
dave 2004-01-06 05:59:31 +00:00
parent 79c0e644a1
commit 96ff9b04c1
6 changed files with 395 additions and 296 deletions
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5
ChangeLog
View File

@ -1,3 +1,8 @@
Tue Jan 6 14:53:14 2004 Dave Thomas <dave@pragprog.com>
* bin/ri: split out the display side, making it pluggable. Added
new ri_driver and ri_display files in lib/rdoc/ri.
Tue Jan 6 11:29:43 2004 NAKAMURA, Hiroshi <nakahiro@sarion.co.jp>
* test/inlinetest.rb, test/{test_generator.rb,test_ipaddr.rb,

2
MANIFEST
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@ -261,6 +261,8 @@ lib/rdoc/parsers/parserfactory.rb
lib/rdoc/rdoc.rb
lib/rdoc/ri/ri_cache.rb
lib/rdoc/ri/ri_descriptions.rb
lib/rdoc/ri/ri_display.rb
lib/rdoc/ri/ri_driver.rb
lib/rdoc/ri/ri_formatter.rb
lib/rdoc/ri/ri_options.rb
lib/rdoc/ri/ri_paths.rb

298
bin/ri
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@ -13,304 +13,10 @@
# The form '.' method matches either class or instance methods, while
# #method matches only instance and ::method matches only class methods.
require 'rdoc/ri/ri_paths'
require 'rdoc/ri/ri_cache'
require 'rdoc/ri/ri_util'
require 'rdoc/ri/ri_reader'
require 'rdoc/ri/ri_formatter'
require 'rdoc/ri/ri_options'
require 'rdoc/ri/ri_driver'
######################################################################
class RiDisplay
def initialize
@options = RI::Options.instance
@options.parse
paths = @options.paths || RI::Paths::PATH
if paths.empty?
$stderr.puts "No ri documentation found in:"
[ RI::Paths::SYSDIR, RI::Paths::SITEDIR, RI::Paths::HOMEDIR].each do |d|
$stderr.puts " #{d}"
end
$stderr.puts "\nWas rdoc run to create documentation?"
exit 1
end
@ri_reader = RI::RiReader.new(RI::RiCache.new(paths))
@formatter = @options.formatter.new(@options, " ")
end
######################################################################
def display_usage
setup_pager
RI::Options::OptionList.usage(short_form=true)
page_output
end
######################################################################
def setup_pager
unless @options.use_stdout
require 'tempfile'
@save_stdout = STDOUT.clone
STDOUT.reopen(Tempfile.new("ri_"))
end
end
######################################################################
def page_output
unless @options.use_stdout
path = STDOUT.path
STDOUT.reopen(@save_stdout)
@save_stdout = nil
paged = false
for pager in [ ENV['PAGER'], "less", "more <", 'pager' ].compact.uniq
if system("#{pager} #{path}")
paged = true
break
end
end
if !paged
@options.use_stdout = true
puts File.read(path)
end
end
end
######################################################################
def display_params(method)
params = method.params
if params[0,1] == "("
if method.is_singleton
params = method.full_name + params
else
params = method.name + params
end
end
params.split(/\n/).each {|p| @formatter.wrap(p) }
end
######################################################################
def display_flow(flow)
if !flow || flow.empty?
@formatter.wrap("(no description...)")
else
@formatter.display_flow(flow)
end
end
######################################################################
def display_method_info(method_entry)
method = @ri_reader.get_method(method_entry)
@formatter.draw_line(method.full_name)
display_params(method)
@formatter.draw_line
display_flow(method.comment)
if method.aliases && !method.aliases.empty?
@formatter.blankline
aka = "(also known as "
aka << method.aliases.map {|a| a.name }.join(", ")
aka << ")"
@formatter.wrap(aka)
end
end
######################################################################
def display_class_info(class_entry)
klass = @ri_reader.get_class(class_entry)
superclass = klass.superclass_string
if superclass
superclass = " < " + superclass
else
superclass = ""
end
@formatter.draw_line(klass.display_name + ": " +
klass.full_name + superclass)
display_flow(klass.comment)
@formatter.draw_line
unless klass.includes.empty?
@formatter.blankline
@formatter.display_heading("Includes:", 2, "")
incs = []
klass.includes.each do |inc|
inc_desc = @ri_reader.find_class_by_name(inc.name)
if inc_desc
str = inc.name + "("
str << inc_desc.instance_methods.map{|m| m.name}.join(", ")
str << ")"
incs << str
else
incs << inc.name
end
end
@formatter.wrap(incs.sort.join(', '))
end
unless klass.constants.empty?
@formatter.blankline
@formatter.display_heading("Constants:", 2, "")
len = 0
klass.constants.each { |c| len = c.name.length if c.name.length > len }
len += 2
klass.constants.each do |c|
@formatter.wrap(c.value,
@formatter.indent+((c.name+":").ljust(len)))
end
end
unless klass.class_methods.empty?
@formatter.blankline
@formatter.display_heading("Class methods:", 2, "")
@formatter.wrap(klass.class_methods.map{|m| m.name}.sort.join(', '))
end
unless klass.instance_methods.empty?
@formatter.blankline
@formatter.display_heading("Instance methods:", 2, "")
@formatter.wrap(klass.instance_methods.map{|m| m.name}.sort.join(', '))
end
unless klass.attributes.empty?
@formatter.blankline
@formatter.wrap("Attributes:", "")
@formatter.wrap(klass.attributes.map{|a| a.name}.sort.join(', '))
end
end
######################################################################
# If the list of matching methods contains exactly one entry, or
# if it contains an entry that exactly matches the requested method,
# then display that entry, otherwise display the list of
# matching method names
def report_method_stuff(requested_method_name, methods)
if methods.size == 1
display_method_info(methods[0])
else
entries = methods.find_all {|m| m.name == requested_method_name}
if entries.size == 1
display_method_info(entries[0])
else
puts "More than one method matched your request. You can refine"
puts "your search by asking for information on one of:\n\n"
@formatter.wrap(methods.map {|m| m.full_name} .join(", "))
end
end
end
######################################################################
def report_class_stuff(requested_class_name, namespaces)
if namespaces.size == 1
display_class_info(namespaces[0])
else
entries = namespaces.find_all {|m| m.full_name == requested_class_name}
if entries.size == 1
display_class_info(entries[0])
else
puts "More than one class or module matched your request. You can refine"
puts "your search by asking for information on one of:\n\n"
@formatter.wrap(namespaces.map {|m| m.full_name}.join(", "))
end
end
end
######################################################################
def display_info_for(arg)
desc = NameDescriptor.new(arg)
namespaces = @ri_reader.top_level_namespace
for class_name in desc.class_names
namespaces = @ri_reader.lookup_namespace_in(class_name, namespaces)
if namespaces.empty?
raise RiError.new("Nothing known about #{arg}")
end
end
setup_pager
begin
if desc.method_name.nil?
report_class_stuff(desc.class_names.join('::'), namespaces)
else
methods = @ri_reader.find_methods(desc.method_name,
desc.is_class_method,
namespaces)
if methods.empty?
raise RiError.new("Nothing known about #{arg}")
else
report_method_stuff(desc.method_name, methods)
end
end
page_output
ensure
STDOUT.reopen(@save_stdout) if @save_stdout
end
end
######################################################################
def process_args
if @options.list_classes
display_class_list
else
if ARGV.size.zero?
display_usage
else
begin
ARGV.each do |arg|
display_info_for(arg)
end
rescue RiError => e
$stderr.puts(e.message)
exit(1)
end
end
end
end
######################################################################
def display_class_list
classes = @ri_reader.class_names
if classes.empty?
puts "Before using ri, you need to generate documentation"
puts "using 'rdoc' with the --ri option"
else
setup_pager
@formatter.draw_line("Known classes and modules")
@formatter.blankline
@formatter.wrap(@ri_reader.class_names.sort.join(", "))
page_output
end
end
end # class RiDisplay
######################################################################
ri = RiDisplay.new
ri = RiDriver.new
ri.process_args

254
lib/rdoc/ri/ri_display.rb Normal file
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@ -0,0 +1,254 @@
require 'rdoc/ri/ri_util'
require 'rdoc/ri/ri_formatter'
require 'rdoc/ri/ri_options'
# This is a kind of 'flag' module. If you want to write your
# own 'ri' display module (perhaps because you'r writing
# an IDE or somesuch beast), you simply write a class
# which implements the various 'display' methods in 'DefaultDisplay',
# and include the 'RiDisplay' module in that class.
#
# To access your class from the command line, you can do
#
# ruby -r <your source file> ../ri ....
#
# If folks _really_ want to do this from the command line,
# I'll build an option in
module RiDisplay
@@display_class = nil
def RiDisplay.append_features(display_class)
@@display_class = display_class
end
def RiDisplay.new(*args)
@@display_class.new(*args)
end
end
######################################################################
#
# A paging display module. Uses the ri_formatter class to do the
# actual presentation
#
class DefaultDisplay
include RiDisplay
def initialize(options)
@options = options
@formatter = @options.formatter.new(@options, " ")
end
######################################################################
def display_usage
page do
RI::Options::OptionList.usage(short_form=true)
end
end
######################################################################
def display_method_info(method)
page do
@formatter.draw_line(method.full_name)
display_params(method)
@formatter.draw_line
display_flow(method.comment)
if method.aliases && !method.aliases.empty?
@formatter.blankline
aka = "(also known as "
aka << method.aliases.map {|a| a.name }.join(", ")
aka << ")"
@formatter.wrap(aka)
end
end
end
######################################################################
def display_class_info(klass, ri_reader)
page do
superclass = klass.superclass_string
if superclass
superclass = " < " + superclass
else
superclass = ""
end
@formatter.draw_line(klass.display_name + ": " +
klass.full_name + superclass)
display_flow(klass.comment)
@formatter.draw_line
unless klass.includes.empty?
@formatter.blankline
@formatter.display_heading("Includes:", 2, "")
incs = []
klass.includes.each do |inc|
inc_desc = ri_reader.find_class_by_name(inc.name)
if inc_desc
str = inc.name + "("
str << inc_desc.instance_methods.map{|m| m.name}.join(", ")
str << ")"
incs << str
else
incs << inc.name
end
end
@formatter.wrap(incs.sort.join(', '))
end
unless klass.constants.empty?
@formatter.blankline
@formatter.display_heading("Constants:", 2, "")
len = 0
klass.constants.each { |c| len = c.name.length if c.name.length > len }
len += 2
klass.constants.each do |c|
@formatter.wrap(c.value,
@formatter.indent+((c.name+":").ljust(len)))
end
end
unless klass.class_methods.empty?
@formatter.blankline
@formatter.display_heading("Class methods:", 2, "")
@formatter.wrap(klass.class_methods.map{|m| m.name}.sort.join(', '))
end
unless klass.instance_methods.empty?
@formatter.blankline
@formatter.display_heading("Instance methods:", 2, "")
@formatter.wrap(klass.instance_methods.map{|m| m.name}.sort.join(', '))
end
unless klass.attributes.empty?
@formatter.blankline
@formatter.wrap("Attributes:", "")
@formatter.wrap(klass.attributes.map{|a| a.name}.sort.join(', '))
end
end
end
######################################################################
# Display a list of method names
def display_method_list(methods)
page do
puts "More than one method matched your request. You can refine"
puts "your search by asking for information on one of:\n\n"
@formatter.wrap(methods.map {|m| m.full_name} .join(", "))
end
end
######################################################################
def display_class_list(namespaces)
page do
puts "More than one class or module matched your request. You can refine"
puts "your search by asking for information on one of:\n\n"
@formatter.wrap(namespaces.map {|m| m.full_name}.join(", "))
end
end
######################################################################
def list_known_classes(classes)
if classes.empty?
puts "Before using ri, you need to generate documentation"
puts "using 'rdoc' with the --ri option"
else
page do
@formatter.draw_line("Known classes and modules")
@formatter.blankline
@formatter.wrap(classes.sort.join(", "))
end
end
end
######################################################################
private
######################################################################
def page
setup_pager
begin
yield
page_output
ensure
STDOUT.reopen(@save_stdout) if @save_stdout
end
end
######################################################################
def setup_pager
unless @options.use_stdout
require 'tempfile'
@save_stdout = STDOUT.clone
STDOUT.reopen(Tempfile.new("ri_"))
end
end
######################################################################
def page_output
unless @options.use_stdout
path = STDOUT.path
STDOUT.reopen(@save_stdout)
@save_stdout = nil
paged = false
for pager in [ ENV['PAGER'], "less", "more <", 'pager' ].compact.uniq
if system("#{pager} #{path}")
paged = true
break
end
end
if !paged
@options.use_stdout = true
puts File.read(path)
end
end
end
######################################################################
def display_params(method)
params = method.params
if params[0,1] == "("
if method.is_singleton
params = method.full_name + params
else
params = method.name + params
end
end
params.split(/\n/).each {|p| @formatter.wrap(p) }
end
######################################################################
def display_flow(flow)
if !flow || flow.empty?
@formatter.wrap("(no description...)")
else
@formatter.display_flow(flow)
end
end
end # class RiDisplay

122
lib/rdoc/ri/ri_driver.rb Normal file
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@ -0,0 +1,122 @@
require 'rdoc/ri/ri_paths'
require 'rdoc/ri/ri_cache'
require 'rdoc/ri/ri_util'
require 'rdoc/ri/ri_reader'
require 'rdoc/ri/ri_formatter'
require 'rdoc/ri/ri_options'
######################################################################
class RiDriver
def initialize
@options = RI::Options.instance
@options.parse
paths = @options.paths || RI::Paths::PATH
if paths.empty?
$stderr.puts "No ri documentation found in:"
[ RI::Paths::SYSDIR, RI::Paths::SITEDIR, RI::Paths::HOMEDIR].each do |d|
$stderr.puts " #{d}"
end
$stderr.puts "\nWas rdoc run to create documentation?"
exit 1
end
@ri_reader = RI::RiReader.new(RI::RiCache.new(paths))
@display = @options.displayer
end
######################################################################
# If the list of matching methods contains exactly one entry, or
# if it contains an entry that exactly matches the requested method,
# then display that entry, otherwise display the list of
# matching method names
def report_method_stuff(requested_method_name, methods)
if methods.size == 1
method = @ri_reader.get_method(methods[0])
@display.display_method_info(method)
else
entries = methods.find_all {|m| m.name == requested_method_name}
if entries.size == 1
method = @ri_reader.get_method(entries[0])
@display.display_method_info(method)
else
@display.display_method_list(methods)
end
end
end
######################################################################
def report_class_stuff(requested_class_name, namespaces)
if namespaces.size == 1
klass = @ri_reader.get_class(namespaces[0])
@display.display_class_info(klass, @ri_reader)
else
entries = namespaces.find_all {|m| m.full_name == requested_class_name}
if entries.size == 1
klass = @ri_reader.get_class(entries[0])
@display.display_class_info(klass, @ri_reader)
else
@display.display_class_list(namespaces)
end
end
end
######################################################################
def get_info_for(arg)
desc = NameDescriptor.new(arg)
namespaces = @ri_reader.top_level_namespace
for class_name in desc.class_names
namespaces = @ri_reader.lookup_namespace_in(class_name, namespaces)
if namespaces.empty?
raise RiError.new("Nothing known about #{arg}")
end
end
if desc.method_name.nil?
report_class_stuff(desc.class_names.join('::'), namespaces)
else
methods = @ri_reader.find_methods(desc.method_name,
desc.is_class_method,
namespaces)
if methods.empty?
raise RiError.new("Nothing known about #{arg}")
else
report_method_stuff(desc.method_name, methods)
end
end
end
######################################################################
def process_args
if @options.list_classes
classes = @ri_reader.class_names
@display.list_known_classes(classes)
else
if ARGV.size.zero?
@display.display_usage
else
begin
ARGV.each do |arg|
get_info_for(arg)
end
rescue RiError => e
$stderr.puts(e.message)
exit(1)
end
end
end
end
end # class RiDriver

10
lib/rdoc/ri/ri_options.rb
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@ -3,6 +3,8 @@
module RI
require 'rdoc/ri/ri_display'
VERSION_STRING = "alpha 0.1"
class Options
@ -201,6 +203,14 @@ module RI
def paths
@doc_dir ? [ @doc_dir ] : nil
end
# Return an instance of the displayer (the thing that actually writes
# the information). This allows us to load in new displayer classes
# at runtime (for example to help with IDE integration)
def displayer
::RiDisplay.new(self)
end
end
end