split internal.h into files

One day, I could not resist the way it was written.  I finally started
to make the code clean.  This changeset is the beginning of a series of
housekeeping commits.  It is a simple refactoring; split internal.h into
files, so that we can divide and concur in the upcoming commits.  No
lines of codes are either added or removed, except the obvious file
headers/footers.  The generated binary is identical to the one before.

1 files changed, 28 insertions, 0 deletions

diff --git a/internal/encoding.h b/internal/encoding.h
new file mode 100644
index 0000000000..79fbadaf50
--- /dev/null
+++ b/internal/encoding.h
@@ -0,0 +1,28 @@
+#ifndef INTERNAL_ENCODING_H /* -*- C -*- */
+#define INTERNAL_ENCODING_H
+/**
+ * @file
+ * @brief      Internal header for Encoding.
+ * @author     \@shyouhei
+ * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
+ *             Permission  is hereby  granted,  to  either redistribute  and/or
+ *             modify this file, provided that  the conditions mentioned in the
+ *             file COPYING are met.  Consult the file for details.
+ */
+
+/* encoding.c */
+ID rb_id_encoding(void);
+#ifdef RUBY_ENCODING_H
+rb_encoding *rb_enc_get_from_index(int index);
+rb_encoding *rb_enc_check_str(VALUE str1, VALUE str2);
+#endif
+int rb_encdb_replicate(const char *alias, const char *orig);
+int rb_encdb_alias(const char *alias, const char *orig);
+int rb_encdb_dummy(const char *name);
+void rb_encdb_declare(const char *name);
+void rb_enc_set_base(const char *name, const char *orig);
+int rb_enc_set_dummy(int index);
+void rb_encdb_set_unicode(int index);
+PUREFUNC(int rb_data_is_encoding(VALUE obj));
+
+#endif /* INTERNAL_ENCODING_H */