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#
# OnigEncodingDefine(foo, Foo) = {
# ..
# "Shift_JIS", /* Canonical Name */
# ..
# };
# ENC_ALIAS("SJIS", "Shift_JIS")
# ENC_REPLICATE("Windows-31J", "Shift_JIS")
# ENC_ALIAS("CP932", "Windows-31J")
#
def check_duplication(defs, name, fn, line)
if defs[name]
raise ArgumentError, "%s:%d: encoding %s is already registered(%s:%d)" %
[fn, line, name, *defs[name]]
else
defs[name.upcase] = [fn,line]
end
end
count = 0
lines = []
encodings = []
defs = {}
encdir = ARGV[0]
outhdr = ARGV[1] || 'encdb.h'
Dir.open(encdir) {|d| d.grep(/.+\.[ch]\z/)}.sort.each do |fn|
open(File.join(encdir,fn)) do |f|
orig = nil
name = nil
f.each_line do |line|
if (/^OnigEncodingDefine/ =~ line)..(/"(.*?)"/ =~ line)
if $1
check_duplication(defs, $1, fn, $.)
encodings << $1
count += 1
end
else
case line
when /^\s*rb_enc_register\(\s*"([^"]+)"/
count += 1
line = nil
when /^ENC_REPLICATE\(\s*"([^"]+)"\s*,\s*"([^"]+)"/
raise ArgumentError,
'%s:%d: ENC_REPLICATE: %s is not defined yet. (replica %s)' %
[fn, $., $2, $1] unless defs[$2.upcase]
count += 1
when /^ENC_ALIAS\(\s*"([^"]+)"\s*,\s*"([^"]+)"/
raise ArgumentError,
'%s:%d: ENC_ALIAS: %s is not defined yet. (alias %s)' %
[fn, $., $2, $1] unless defs[$2.upcase]
when /^ENC_DUMMY\(\s*"([^"]+)"/
count += 1
else
next
end
check_duplication(defs, $1, fn, $.)
lines << line.sub(/;.*/m, ";\n") if line
end
end
end
end
result = encodings.map {|e| %[ENC_DEFINE("#{e}");\n]}.join + lines.join +
"\n#define ENCODING_COUNT #{count}\n"
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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