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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 = {}
transdirs = ARGV.dup
outhdr = transdirs.shift || 'transdb.h'
transdirs << 'enc/trans' if transdirs.empty?
transdirs = transdirs.sort_by {|td|
td.length
}.inject([]) {|tds, td|
next tds unless File.directory?(td)
tds << td if tds.all? {|td2| !File.identical?(td2, td) }
tds
}
files = {}
transdirs.each do |transdir|
names = Dir.entries(transdir)
names_t = names.map {|n| /(?!\A)\.trans\z/ =~ n ? $` : nil }.compact
names_c = names.map {|n| /(?!\A)\.c\z/ =~ n ? $` : nil }.compact
(names_t & names_c).map {|n|
"#{n}.c"
}.sort_by {|e|
e.scan(/(\d+)|(\D+)/).map {|n,a| a||[n.size,n.to_i]}.flatten
}.each do |fn|
next if files[fn]
files[fn] = true
path = File.join(transdir,fn)
open(path) 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]
if converters[from_to]
raise ArgumentError, '%s:%d: transcode "%s" is already registered at %s:%d' %
[path, $., from_to, *converters[from_to].values_at(3, 4)]
else
converters[from_to] = [$1, $2, fn[0..-3], path, $.]
end
end
end
end
end
end
end
result = converters.map {|k, v| %[rb_declare_transcoder("%s", "%s", "%s");\n] % v}.join
open(outhdr, 'wb') do |f|
f.print result
end
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