add grnop2ruby.rb: extract grn_operator from groonga.h

git-svn-id: svn+ssh://rubyforge.org/var/svn/groonga/groonga/trunk@636 2d713de4-4fbb-4d10-8406-bb89ef438322

Author: hayamiz

misc/grnop2ruby.rb

@@ -0,0 +1,49 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2009  Yuto Hayamizu <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License version 2.1 as published by the Free Software Foundation.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+#
+# This script expects "groonga.h" as a first argument, extracts the
+# 'grn_operator', and write 'rb_define_const's of 'grn_operator' to
+# standard outout.
+#
+# Usage:
+#   ruby grnop2ruby.rb /path/to/groonga.h
+#
+
+replace_dictionary = {
+  "VAR" => "VARIABLE",
+  "EXPR" => "EXPRESSION",
+  "NOP" => "NO_OPERATION",
+  "REF" => "REFERENCE",
+  "OBJ" => "OBJECT",
+  "INCR" => "INCREMENT",
+  "DECR" => "DECREMENT",
+  "MOD" => "MODULO",
+  "LCP" => "LONGEST_COMMON_PREFIX",
+}
+
+ARGF.each_line do |line|
+  case line
+  when /\A\s+(GRN_OP_\w+)/
+    operator = $1
+    rb_operator = operator.gsub(/\AGRN_OP_/, "").split("_").map{ |word|
+      replace_dictionary[word] || word
+    }.join("_")
+    puts "    rb_define_const(rb_mGrnOperation, \"%s\",
+                    UINT2NUM(%s));" % [rb_operator, operator]
+  end
+end