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#
# static const rb_transcoder
# rb_from_US_ASCII = {
# "US-ASCII", "UTF-8", &from_US_ASCII, 1, 0,
# NULL, NULL,
# };
#
count = 0
converters = {}
transdir = ARGV[0]
outhdr = ARGV[1] || 'transdb.h'
Dir.open(transdir) {|d| d.grep(/.+\.[ch]\z/)}.sort_by {|e|
e.scan(/(\d+)|(\D+)/).map {|n,a| a||[n.size,n.to_i]}.flatten
}.each do |fn|
open(File.join(transdir,fn)) do |f|
f.each_line do |line|
if (/^static const rb_transcoder/ =~ line)..(/"(.*?)"\s*,\s*"(.*?)"/ =~ line)
if $1 && $2
from_to = "%s to %s" % [$1, $2]
converters[from_to]
if converters[from_to]
raise ArgumentError, '%s:%d: transcode "%s" is already registered (%s:%d)' %
[fn, $., from_to, *converters[from_to].values_at(2, 3)]
else
converters[from_to] = [$1, $2, fn[0..-3], $.]
end
end
end
end
end
end
result = converters.map {|k, v| %[rb_declare_transcoder("%s", "%s", "%s");\n] % v}.join
mode = IO::RDWR|IO::CREAT
mode |= IO::BINARY if defined?(IO::BINARY)
open(outhdr, mode) do |f|
unless f.read == result
f.rewind
f.truncate(0)
f.print result
end
end
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