io.c: use built-in encoding indexes

* internal.h: add UTF-{16,32}{BE,LE}.
* io.c (io_strip_bom): use built-in encoding indexes in internal.h.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41742 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 4 deletions

diff --git a/io.c b/io.c
index 8261c99fda..1a3f998914 100644
--- a/io.c
+++ b/io.c
@@ -5319,7 +5319,7 @@ io_strip_bom(VALUE io)
       case INT2FIX(0xFE):
 	if (NIL_P(b2 = rb_io_getbyte(io))) break;
 	if (b2 == INT2FIX(0xFF)) {
-	    return rb_enc_find_index("UTF-16BE");
+	    return ENCINDEX_UTF_16BE;
 	}
 	rb_io_ungetbyte(io, b2);
 	break;
@@ -5330,14 +5330,14 @@ io_strip_bom(VALUE io)
 	    b3 = rb_io_getbyte(io);
 	    if (b3 == INT2FIX(0) && !NIL_P(b4 = rb_io_getbyte(io))) {
 		if (b4 == INT2FIX(0)) {
-		    return rb_enc_find_index("UTF-32LE");
+		    return ENCINDEX_UTF_32LE;
 		}
 		rb_io_ungetbyte(io, b4);
 		rb_io_ungetbyte(io, b3);
 	    }
 	    else {
 		rb_io_ungetbyte(io, b3);
-		return rb_enc_find_index("UTF-16LE");
+		return ENCINDEX_UTF_16LE;
 	    }
 	}
 	rb_io_ungetbyte(io, b2);
@@ -5348,7 +5348,7 @@ io_strip_bom(VALUE io)
 	if (b2 == INT2FIX(0) && !NIL_P(b3 = rb_io_getbyte(io))) {
 	    if (b3 == INT2FIX(0xFE) && !NIL_P(b4 = rb_io_getbyte(io))) {
 		if (b4 == INT2FIX(0xFF)) {
-		    return rb_enc_find_index("UTF-32BE");
+		    return ENCINDEX_UTF_32BE;
 		}
 		rb_io_ungetbyte(io, b4);
 	    }