1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
#!/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
exit 2 unless src
trim = trim_mode_opt(trim_mode, disable_percent)
erb = factory.new(src.untaint, safe_level, trim)
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
|
