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|
# Web::Controller::PolyState
# Copyright(c) 2004 MoonWolf <moonwolf@moonwolf.com>
require 'web/escape'
require 'web/response'
require 'web/cookie'
module Web
module Controller
class PolyState
def initialize
end
def setup(opt={})
@opt = opt
@states = {}
end
def teardown
end
def cookie_name
'sessionid'
end
def cookie_path
nil
end
def cookie_domain
nil
end
def session_expires
Time.now + 600
end
def run(req)
begin
state = 'default'
session_id = req.cookies[cookie_name]
if session_id
session_id = session_id.value
ps = Web::Persistent.new(session_id,@opt)
ps.transaction {
if ps['state']
state = ps['state']
if ps['expire']<Time.now
state = 'default'
end
end
ps['state'] = state
ps['expire'] = session_expires
}
else
ps = Web::Persistent.new(nil,@opt)
ps.transaction {
ps['state'] = state
ps['expire'] = session_expires
}
session_id = ps.persistent_id
end
rsp = Web::Response.new
cookie = Web::Cookie.new(cookie_name, session_id)
cookie.path = cookie_path if cookie_path
cookie.domain = cookie_domain if cookie_domain
rsp = @states[state].run(req, rsp, ps, self)
rsp.cookies[cookie_name] = cookie
rsp
rescue StandardError,ScriptError
error($!.message + "\n" + $!.backtrace.join("\n"))
end
end
def error(msg)
rsp = Web::Response.new
msg = h(msg).gsub(/\n/,"<br>")
rsp.content_type = "text/html"
rsp.write <<EOS
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
<head>
<title>ERROR #{self.class}</title>
<link rel="INDEX" href="./">
</head>
<body>
<h1>ERROR #{self.class}</h1>
<pre>#{msg}</pre>
</body>
</html>
EOS
rsp
end
def h(str)
Web::escapeHTML(str)
end
def u(str)
Web::escape(str.to_s)
end
class State
def run_mode(req)
rm = req.get('rm')
if rm == nil
req.form.keys.each {|k|
if k=~/^rm_/
rm = $'
break
end
}
end
rm ||= 'start'
return rm
end
def run(req, rsp, ps, main)
begin
rm = 'do_' + run_mode(req)
send(rm, req, rsp, ps, main)
rsp
rescue StandardError,ScriptError
error($!.message + "\n" + $!.backtrace.join("\n"))
end
end
def transit(ps,state)
ps.transaction {
ps['state'] = state
}
end
def error(msg)
rsp = Web::Response.new
msg = h(msg).gsub(/\n/,"<br>")
rsp.content_type = "text/html"
rsp.write <<EOS
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
<head>
<title>ERROR #{self.class}</title>
<link rel="INDEX" href="./">
</head>
<body>
<h1>ERROR #{self.class}</h1>
<pre>#{msg}</pre>
</body>
</html>
EOS
rsp
end
def h(str)
Web::escapeHTML(str)
end
def u(str)
Web::escape(str.to_s)
end
def qs(hash)
url = '?'
url << hash.collect {|key,value|
u(key.to_s) << '=' << u(value.to_s)
}.sort.join(';')
h(url)
end
def get_param(req, name, type, must = true)
raise ArgumentError if must && !req.has_key?(name)
value = req[name]
return nil if !value and !must
value = value.read if value.respond_to?(:read)
case type
when :text
value
when :flag
case value.trim.downcase
when /\A(?:on|yes|y|true|1)\z/
true
when /\A(?:off|no|n|false|0)\z/
false
else
raise ArgumentError
end
when :integer
Integer(value)
when Array
raise ArgumentError unless type.include?(value)
value
when Hash
type[value]
when Regexp
m = type.match(value)
raise ArgumentError unless value
m
end
end
end # State
end # PolyState
end # Controller
end # Web
|
