blob: 9bb6487bee6a8d6b4d4990f0ee2c7956b44aee3e (
plain)
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def decode64(str)
e = -1;
c = ","
string=''
for line in str.split("\n")
line.sub!(/=+$/, '')
line.tr! 'A-Za-z0-9+/', "\000-\377"
line.each_byte { |ch|
n +=1
e +=1
if e==0
c = ch << 2
elsif e==1
c |= ch >>4
string += [c].pack('c')
c = ch << 4
elsif e == 2
c |= ch >> 2
string += [c].pack('c');
c = ch << 6
elsif e==3
c |= ch
string += [c].pack('c')
e = -1
end
}
end
return string
end
def j2e(str)
while str =~ /\033\$B([^\033]*)\033\(B/
s = $1
pre, post = $`, $'
s.gsub!(/./) { |ch|
(ch[0]|0x80).chr
}
str = pre + s + post
end
# str.gsub!(/\033\$B([^\033]*)\033\(B/) {
# $1.gsub!(/./) { |ch|
# (ch[0]|0x80).chr
# }
# }
str
end
def decode_b(str)
str.gsub!(/=\?ISO-2022-JP\?B\?([!->@-~]+)\?=/i) {
decode64($1)
}
str.gsub!(/\n/, ' ')
str.gsub!(/\0/, '')
j2e(str)
end
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