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#!/usr/bin/env ruby
# Tiny eRuby --- ERB2
# Copyright (c) 1999-2000,2002 Masatoshi SEKI
# You can redistribute it and/or modify it under the same terms as Ruby.
require 'erb'
class ERB
module Main
def ARGV.switch
return nil if self.empty?
arg = self.shift
return nil if arg == '--'
if arg =~ /^-(.)(.*)/
return arg if $1 == '-'
raise 'unknown switch "-"' if $2.index('-')
self.unshift "-#{$2}" if $2.size > 0
"-#{$1}"
else
self.unshift arg
nil
end
end
def ARGV.req_arg
self.shift || raise('missing argument')
end
def trim_mode_opt(trim_mode, disable_percent)
return trim_mode if disable_percent
case trim_mode
when 0
return '%'
when 1
return '%>'
when 2
return '%<>'
when '-'
return '%-'
end
end
module_function :trim_mode_opt
def run(factory=ERB)
trim_mode = 0
disable_percent = false
begin
while switch = ARGV.switch
case switch
when '-x' # ruby source
output = true
when '-n' # line number
number = true
when '-v' # verbose
$VERBOSE = true
when '--version' # version
STDERR.puts factory.version
exit
when '-d', '--debug' # debug
$DEBUG = true
when '-r' # require
require ARGV.req_arg
when '-S' # sacurity level
arg = ARGV.req_arg
raise "invalid safe_level #{arg.dump}" unless arg =~ /^[0-4]$/
safe_level = arg.to_i
when '-T' # trim mode
arg = ARGV.req_arg
if arg == '-'
trim_mode = arg
next
end
raise "invalid trim mode #{arg.dump}" unless arg =~ /^[0-2]$/
trim_mode = arg.to_i
when '-K' # KCODE
arg = ARGV.req_arg
case arg.downcase
when 'e', '-e', 'euc'
$KCODE = 'EUC'
when 's', '-s', 'sjis'
$KCODE = 'SJIS'
when 'u', '-u', 'utf8'
$KCODE = 'UTF8'
when 'n', '-n', 'none'
$KCODE = 'NONE'
else
raise "invalid KCODE #{arg.dump}"
end
when '-P'
disable_percent = true
when '--help'
raise "print this help"
else
raise "unknown switch #{switch.dump}"
end
end
rescue # usage
STDERR.puts $!.to_s
STDERR.puts File.basename($0) +
" [switches] [inputfile]"
STDERR.puts <<EOU
-x print ruby script
-n print ruby script with line number
-v enable verbose mode
-d set $DBEUG to true
-r [library] load a library
-K [kcode] specify KANJI code-set
-S [safe_level] set $SAFE (0..4)
-T [trim_mode] specify trim_mode (0..2, -)
-P disregard the lin which starts in "%"
EOU
exit 1
end
src = $<.read
filename = $FILENAME
exit 2 unless src
trim = trim_mode_opt(trim_mode, disable_percent)
erb = factory.new(src.untaint, safe_level, trim)
erb.filename = filename
if output
if number
l = 1
for line in erb.src
puts "%3d %s"%[l, line]
l += 1
end
else
puts erb.src
end
else
erb.run(TOPLEVEL_BINDING.taint)
end
end
module_function :run
end
end
if __FILE__ == $0
ERB::Main.run
end
|
