* common.mk (encdb.h): give output file name to make_encdb.rb.

* encoding.c (enc_table): simplified.

* encoding.c (enc_register_at): lazy loading.  [ruby-dev:33013]

* regenc.h (ENC_DUMMY): added.

* enc/make_encdb.rb: now emits macros only.

* enc/iso_2022_jp.h: split from encoding.c.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15086 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 49 insertions, 40 deletions

diff --git a/enc/iso_2022_jp.h b/enc/iso_2022_jp.h
new file mode 100644
index 0000000000..8155bdcd54
--- /dev/null
+++ b/enc/iso_2022_jp.h
@@ -0,0 +1,6 @@
+#include "regenc.h"
+/* dummy for unsupported, statefull encoding */
+ENC_DUMMY("ISO-2022-JP");
+ENC_ALIAS("ISO2022-JP", "ISO-2022-JP");
+ENC_REPLICATE("ISO-2022-JP-2", "ISO-2022-JP");
+ENC_ALIAS("ISO2022-JP2", "ISO-2022-JP-2");
diff --git a/enc/make_encdb.rb b/enc/make_encdb.rb
index c140007f67..15d5f3af3c 100755
--- a/enc/make_encdb.rb
+++ b/enc/make_encdb.rb
@@ -15,56 +15,59 @@ def check_duplication(encs, name, fn, line)
   end
 end
 
+count = 0
+lines = []
 encodings = []
-replicas = {}
-aliases = {}
 encdir = ARGV[0]
-Dir.open(encdir) {|d| d.grep(/.+\.c\z/)}.sort.each do |fn|
+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
     encs = []
     f.each_line do |line|
-      break if /^OnigEncodingDefine/o =~ line
-    end
-    f.each_line do |line|
-      break if /"(.*?)"/ =~ line
-    end
-    if $1
-      check_duplication(encs, $1, fn, $.)
-      encs << $1.upcase
-      encodings << $1 
-      f.each_line do |line|
-	if /^ENC_REPLICATE\(\s*"([^"]+)"\s*,\s*"([^"]+)"/o =~ line
-	  raise ArgumentError,
-	    '%s:%d: ENC_REPLICATE: %s is not defined yet. (replica %s)' %
-	    [fn, $., $2, $1] unless encs.include?($2.upcase)
-	  check_duplication(encs, $1, fn, $.)
-	  encs << $1.upcase
-	  encodings << $1
-	  replicas[$1] = $2
-	elsif /^ENC_ALIAS\(\s*"([^"]+)"\s*,\s*"([^"]+)"/o =~ line
-	  raise ArgumentError,
-	    '%s:%d: ENC_ALIAS: %s is not defined yet. (alias %s)' %
-	    [fn, $., $2, $1] unless encs.include?($2.upcase)
-	  check_duplication(encs, $1, fn, $.)
-	  encodings << $1
-	  aliases[$1] = $2
-	end
+      if (/^OnigEncodingDefine/ =~ line)..(/"(.*?)"/ =~ line)
+        if $1
+          check_duplication(encs, $1, fn, $.)
+          encs << $1.upcase
+          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 encs.include?($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 encs.include?($2.upcase)
+        when /^ENC_DUMMY\(\s*"([^"]+)"/
+          count += 1
+        else
+          next
+        end
+        check_duplication(encs, $1, fn, $.)
+        encs << $1.upcase
+        lines << line.sub(/;.*/m, ";\n") if line
       end
     end
   end
 end
 
-open('encdb.h', 'wb') do |f|
-  f.puts 'static const char *const enc_name_list[] = {'
-  encodings.each {|name| f.puts'    "%s",' % name}
-  f.puts('};', '', 'static void', 'enc_init_db(void)', '{')
-  replicas.each_pair {|name, orig|
-    f.puts '    ENC_REPLICATE("%s", "%s");' % [name, orig]
-  }
-  aliases.each_pair {|name, orig|
-    f.puts '    ENC_ALIAS("%s", "%s");' % [name, orig]
-  }
-  f.puts '}'
+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