# See `init_mentity`.
	redef fun init_command do return init_mentity

	redef fun init_command do
		if not allowed_formats.has(format) then
			return new ErrorBadGraphFormat(format, allowed_formats)
		end
		return super
	end

	# `init_command` is used to factorize the sorting and pagination of results
	#
	# See `init_results` for the result list initialization.
	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res
		res = init_results
		if not res isa CmdSuccess then return res
		sort
		paginate
		return res
	end

	# Same states than `CmdEntity::init_mentity`
	#
	# Plus returns `WarningNoMDoc` if no MDoc was found for the MEntity.
	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res
		var mentity = self.mentity.as(not null)

		if mdoc == null then
			mdoc = if fallback then mentity.mdoc_or_fallback else mentity.mdoc
		end
		if mdoc == null then return new WarningNoMDoc(mentity)
		return res
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res
		var mentity = self.mentity.as(not null)

		if text == null then
			text = mentity.name
		end
		if title == null then
			var mdoc = mentity.mdoc_or_fallback
			if mdoc != null then
				title = mdoc.synopsis
			end
		end
		return res
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res
		return init_file
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res
		var mentity = self.mentity.as(not null)

		if mentity isa MModule then
			file = mmodule_main(mentity)
			if file == null then return new WarningNoMain(mentity)
		else
			return new WarningNoMain(mentity)
		end
		return res
	end

	redef fun init_command do
		if metadata != null then return new CmdSuccess

		var res = super
		if not res isa CmdSuccess then return res
		var mentity = self.mentity.as(not null)

		if mentity isa MPackage then
			metadata = mentity.metadata
		else
			return new WarningNoMetadata(mentity)
		end
		return res
	end

	redef fun init_command do
		super
		self.stats = catalog.catalog_stats
		return new CmdSuccess
	end

	redef fun init_command do
		super
		var tags_to_projects = new ArrayMap[String, Int]
		var tags = catalog.tag2proj.keys.to_a
		tags_sorter.sort(tags)
		for tag in tags do
			if not catalog.tag2proj.has_key(tag) then continue
			tags_to_projects[tag] = catalog.tag2proj[tag].length
		end
		packages_count_by_tags = tags_to_projects
		return new CmdSuccess
	end

	redef fun init_command do
		init_person
		return super
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res
		var mentity = self.mentity.as(not null)

		if not mentity isa MPackage then return new WarningNoIni(mentity)

		var ini = mentity.ini
		if ini == null then return new WarningNoIni(mentity)

		self.ini = ini

		return res
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res
		var mentity = self.mentity.as(not null)

		var mpackage = null
		if mentity isa MPackage then
			mpackage = mentity
		else if mentity isa MGroup then
			mpackage = mentity.mpackage
		else if mentity isa MModule then
			mpackage = mentity.mpackage
		end

		if mpackage == null then return new WarningNoManFile(mentity)

		var source_file = mpackage.location.file
		if source_file == null then return new WarningNoManFile(mentity)

		var man_dir = source_file.filename / "man"
		if not man_dir.file_exists then return new WarningNoManFile(mentity)

		var man_file = null
		for file in man_dir.files do
			if not file.has_prefix(mentity.name) then continue
			man_file = man_dir / file
		end
		if man_file == null then return new WarningNoManFile(mentity)

		self.file = man_file

		return res
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res

		var mentity = self.mentity.as(not null)
		var ini = self.ini.as(not null)

		var desc = ini["package.desc"]
		if desc == null then return new WarningNoDescription(mentity)
		self.desc = desc

		return res
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res

		var mentity = self.mentity.as(not null)
		var ini = self.ini.as(not null)

		var url = ini["upstream.git"]
		if url == null then return new WarningNoGitUrl(mentity)
		self.url = url

		return res
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res

		var mentity = self.mentity.as(not null)
		var ini = self.ini.as(not null)

		var url = ini["upstream.issues"]
		if url == null then return new WarningNoIssuesUrl(mentity)
		self.url = url

		return res
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res

		var mentity = self.mentity.as(not null)
		var ini = self.ini.as(not null)

		var maintainer = ini["package.maintainer"]
		if maintainer == null then return new WarningNoMaintainer(mentity)
		self.maintainer = maintainer

		return res
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res

		var mentity = self.mentity.as(not null)
		var ini = self.ini.as(not null)

		var names = ini["package.more_contributors"]
		if names == null then return new WarningNoContributor(mentity)

		var contributors = new Array[String]
		for name in names.split(",") do
			contributors.add name.trim
		end
		if contributors.is_empty then return new WarningNoContributor(mentity)
		self.contributors = contributors

		return res
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res

		var mentity = self.mentity.as(not null)
		var ini = self.ini.as(not null)

		var license = ini["package.license"]
		if license == null then return new WarningNoLicense(mentity)
		self.license = license

		return res
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res
		var mentity = self.mentity.as(not null)
		var file = self.file.as(not null)

		var lines = file.to_path.read_lines
		var in_synopsis = false
		for line in lines do
			if in_synopsis and line.has_prefix(mentity.name) then
				synopsis = line
				break
			end
			if line != "# SYNOPSIS" then continue
			in_synopsis = true
		end

		if synopsis == null then return new WarningNoManSynopsis(mentity)

		return res
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res
		var mentity = self.mentity.as(not null)
		var file = self.file.as(not null)

		var options = new ArrayMap[String, String]

		var lines = file.to_path.read_lines
		var in_options = false
		for i in [0 .. lines.length[ do
			var line = lines[i]
			if line == "# OPTIONS" then
				in_options = true
			else if in_options and line.has_prefix("### ") then
				var opt = line.substring(4, line.length).trim.replace("`", "")
				var desc = ""
				if i < lines.length - 1 then
					desc = lines[i + 1].trim
				end
				options[opt] = desc
			else if line.has_prefix("# ") then
				in_options = false
			end
		end

		if options.is_empty then return new WarningNoManOptions(mentity)
		self.options = options

		return res
	end

	# Same as `CmdEntity::init_mentity`
	#
	# Plus `WarningNoCode` if no code/AST node is found for `mentity`.
	redef fun init_command do
		if node != null then return new CmdSuccess

		var res = super
		if not res isa CmdSuccess then return res
		var mentity = self.mentity.as(not null)

		if mentity isa MClass then mentity = mentity.intro
		if mentity isa MProperty then mentity = mentity.intro
		node = modelbuilder.mentity2node(mentity)
		if node == null then return new WarningNoCode(mentity)
		return res
	end

	redef fun init_command do
		var res = super
		if not res isa CmdSuccess then return res
		var mentity = self.mentity.as(not null)

		var mdoc = self.mdoc
		if mdoc == null then
			mdoc = if fallback then mentity.mdoc_or_fallback else mentity.mdoc
			self.mdoc = mdoc
		end
		if mdoc == null then return new WarningNoMDoc(mentity)

		markdown_processor.process(mdoc.md_documentation.write_to_string)

		var summary = new ArrayMap[String, HeadLine]
		summary.add_all markdown_processor.decorator.headlines
		self.summary = summary
		return res
	end

	redef fun init_command do
		if uml != null then return new CmdSuccess

		var res = super
		if not res isa CmdSuccess then return res
		var mentity = self.mentity.as(not null)

		if mentity isa MClassDef then mentity = mentity.mclass
		if mentity isa MClass or mentity isa MModule then
			uml = new UMLModel(model, mainmodule, filter)
		else
			return new WarningNoUML(mentity)
		end
		return res
	end

	redef fun init_command do
		if graph != null then return new CmdSuccess

		var res = super
		if not res isa CmdSuccess then return res
		var mentity = self.mentity.as(not null)

		graph = new InheritanceGraph(mentity, model, mainmodule, filter)
		return res
	end

	redef fun init_command do
		var res = init_mentity
		if not res isa CmdSuccess then return res
		res = init_results
		if not res isa CmdSuccess then return res
		sort
		paginate
		return res
	end

	redef fun init_command do
		var tag = self.tag
		if tag == null then return new ErrorNoTag

		if not catalog.tag2proj.has_key(tag) then return new ErrorTagNotFound(tag)
		return super
	end

	redef fun init_command do return super

	# FIXME linearization
	redef fun init_command do return super