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* io.c (rb_io_external_encoding): new method.

* encoding.c (rb_enc_from_encoding): returns Qnil for NULL
  encoding.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14397 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
matz 2007-12-21 04:26:38 +00:00
parent 65a953c7c9
commit 1b27cfcd6c
3 changed files with 28 additions and 1 deletions

View file

@ -1,3 +1,10 @@
Fri Dec 21 13:10:57 2007 Yukihiro Matsumoto <matz@ruby-lang.org>
* io.c (rb_io_external_encoding): new method.
* encoding.c (rb_enc_from_encoding): returns Qnil for NULL
encoding.
Fri Dec 21 13:09:11 2007 Tanaka Akira <akr@fsij.org>
* encoding.c (rb_locale_charmap): return nil if no locale information.

View file

@ -51,7 +51,7 @@ enc_new(rb_encoding *encoding)
VALUE
rb_enc_from_encoding(rb_encoding *encoding)
{
if (!encoding) return 0;
if (!encoding) return Qnil;
if (enc_initialized_p(encoding))
return ENC_FROM_ENCODING(encoding);
return enc_new(encoding);

20
io.c
View file

@ -5657,6 +5657,24 @@ rb_io_s_read(int argc, VALUE *argv, VALUE io)
return rb_ensure(io_s_read, (VALUE)&arg, rb_io_close, arg.io);
}
/*
* call-seq:
* io.externalencoding => encoding
*
* Returns the Encoding object that represents the encoding of the file.
*/
static VALUE
rb_io_external_encoding(VALUE io)
{
rb_io_t *fptr;
GetOpenFile(io, fptr);
return rb_enc_from_encoding(fptr->enc);
}
static VALUE
argf_tell(void)
{
@ -6232,6 +6250,8 @@ Init_IO(void)
rb_define_method(rb_cIO, "pid", rb_io_pid, 0);
rb_define_method(rb_cIO, "inspect", rb_io_inspect, 0);
rb_define_method(rb_cIO, "external_encoding", rb_io_external_encoding, 0);
rb_define_variable("$stdin", &rb_stdin);
rb_stdin = prep_stdio(stdin, FMODE_READABLE, rb_cIO, "<STDIN>");
rb_define_hooked_variable("$stdout", &rb_stdout, 0, stdout_setter);