require 'delegate'
require 'planet/log'
module Planet
def Planet.config
@@config
end
def Planet.predefine_options(planet_hash)
planet_hash['name'] = "Unconfigured Planet" unless planet_hash['name']
planet_hash['link'] = '' unless planet_hash['link']
planet_hash['date_format'] = "%B %d, %Y %I:%M %p" unless planet_hash['date_format']
planet_hash['new_date_format'] = "%B %d, %Y" unless planet_hash['new_date_format']
end
# Configuration parser compatible with the data format supported by Python:
# http://docs.python.org/lib/module-ConfigParser.html
class PythonConfigParser < DelegateClass(Hash)
DEFAULTSECT = "DEFAULT"
SECTRE = /
\[ # [
([^\]]+) # very permissive!
\] # ]
/x
OPTCRE = /
([^:=\s][^:=]*) # very permissive!
\s*[:=]\s* # any number of space chars,
# followed by separator
# (either : or =), followed
# by any # space chars
(.*)$ # everything up to eol
/x
def initialize
@sections = {}
@sections[DEFAULTSECT] = {}
super(@sections)
end
def read filename
File.open(filename) do |config|
cursect = nil
optname = nil
lineno = 0
while line = config.gets
lineno += 1
next if line.strip.empty? or '#;'.include?(line[0])
next if line =~ /^rem(\s|$)/i
if line =~ /^\s/ and cursect and optname:
# continuation line
value = line.strip
cursect[optname] += "\n#{value}" if value
elsif line =~ SECTRE
# section header
sectname = $1
@sections[sectname] ||= {'__name__' => sectname}
cursect = @sections[sectname]
optname = nil
elsif not cursect
raise Exception.new('Missing section header')
elsif line =~ OPTCRE
# option line
optname, optval = $1, $2
optval.sub(/\s;.*/, '')
optval = '' if optval == '""'
cursect[optname.downcase.strip] = optval
else
raise Exception.new('Invalid syntax on line #{lineno}')
end
end
end
end
end
class ConfigParser < PythonConfigParser
def initialize
super
self['Planet'] = {}
end
def read filename
super(filename)
planet = self['Planet']
Planet.predefine_options(planet)
Planet.log_format planet['log_format'] if planet['log_format']
Planet.log_level planet['log_level'] if planet['log_level']
end
end
@@config = ConfigParser.new
end
