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Deprecate fgetwln()

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This function has the same problems as fgetln() which is already marked
as deprecated.
This commit is contained in:
Guillem Jover 2018-05-21 03:15:59 +02:00
parent 6eebc1f264
commit 3cabf46bb0
2 changed files with 18 additions and 2 deletions
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15
man/libbsd.7
View File

@ -1,6 +1,6 @@
.\" libbsd man page .\" libbsd man page
.\" .\"
.\" Copyright © 2017 Gullem Jover <guillem@hadrons.org> .\" Copyright © 2017-2018 Gullem Jover <guillem@hadrons.org>
.\" .\"
.\" Redistribution and use in source and binary forms, with or without .\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions .\" modification, are permitted provided that the following conditions
@ -24,7 +24,7 @@
.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF .\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
.\" ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\" .\"
.Dd May 31 2017 .Dd May 21 2018
.Dt LIBBSD 7 .Dt LIBBSD 7
.Os .Os
.Sh NAME .Sh NAME
@ -143,6 +143,17 @@ Use
.Fn getline 3 .Fn getline 3
instead, which is available in many systems and required by instead, which is available in many systems and required by
.St -p1003.1-2008 . .St -p1003.1-2008 .
.It Fn fgetwln
Unportable, requires assistance from the stdio layer.
An implementation has to choose between leaking buffers or being reentrant
for a limited amount of streams (this implementation chose the latter with
a limit of 32).
Use
.Fn fgetwc 3
instead, which is available in many systems and required by
.St -isoC-99
and
.St -p1003.1-2001 .
.It Fn funopen .It Fn funopen
Unportable, requires assistance from the stdio layer or some hook framework. Unportable, requires assistance from the stdio layer or some hook framework.
On GNU systems the On GNU systems the

5
src/fgetwln.c
View File

@ -30,6 +30,8 @@
#include <stdio.h> #include <stdio.h>
#include <wchar.h> #include <wchar.h>
#include "local-link.h"
struct filewbuf { struct filewbuf {
FILE *fp; FILE *fp;
wchar_t *wbuf; wchar_t *wbuf;
@ -85,3 +87,6 @@ fgetwln(FILE *stream, size_t *lenp)
*lenp = wused; *lenp = wused;
return wused ? fb->wbuf : NULL; return wused ? fb->wbuf : NULL;
} }
libbsd_link_warning(fgetwln,
"This function cannot be safely ported, use fgetwc(3) "
"instead, as it is supported by C99 and POSIX.1-2001.")