isascii

[Simon Josefsson]

isascii is not part of C89, but POSIX:

http://www.opengroup.org/onlinepubs/009695399/functions/isascii.html

GnuTLS uses it.  How about the patch below?

Index: ChangeLog
===================================================================
RCS file: /cvsroot/gnulib/gnulib/ChangeLog,v
retrieving revision 1.325
diff -u -p -r1.325 ChangeLog
--- ChangeLog   12 Aug 2005 09:16:15 -0000      1.325
+++ ChangeLog   12 Aug 2005 11:02:07 -0000
@@ -1,5 +1,9 @@
 2005-08-12  Simon Josefsson  <address@hidden>
 
+       * modules/isascii: New file.
+
+2005-08-12  Simon Josefsson  <address@hidden>
+
        * MODULES.html.sh (Extra functions based on ANSI C 89: Misc): Add
        readline, getdelim and check_version.
        (Support for systems lacking ISO C 99: Sizes of integer types):
Index: lib/ChangeLog
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/ChangeLog,v
retrieving revision 1.900
diff -u -p -r1.900 ChangeLog
--- lib/ChangeLog       11 Aug 2005 19:42:27 -0000      1.900
+++ lib/ChangeLog       12 Aug 2005 11:02:08 -0000
@@ -1,3 +1,7 @@
+2005-08-12  Simon Josefsson  <address@hidden>
+
+       * isascii.h, isascii.c: New file.
+
 2005-08-11  Simon Josefsson  <address@hidden>
 
        * readline.h, readline.c: New file.
Index: lib/isascii.c
===================================================================
RCS file: lib/isascii.c
diff -N lib/isascii.c
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ lib/isascii.c       12 Aug 2005 11:02:08 -0000
@@ -0,0 +1,29 @@
+/* Test for a 7-bit US-ASCII character.
+   Copyright (C) 2005 Free Software Foundation, Inc.
+   Written by Simon Josefsson.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "isascii.h"
+
+int
+isascii (int c)
+{
+  return (c & ~0x7f) == 0;
+}
Index: lib/isascii.h
===================================================================
RCS file: lib/isascii.h
diff -N lib/isascii.h
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ lib/isascii.h       12 Aug 2005 11:02:08 -0000
@@ -0,0 +1,30 @@
+/* Test for a 7-bit US-ASCII character.
+   Copyright (C) 2005 Free Software Foundation, Inc.
+   Written by Simon Josefsson.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifndef ISASCII_H
+#define ISASCII_H
+
+/* Get isascii declaration, if available.  */
+#include <ctype.h>
+
+#if defined HAVE_DECL_ISASCII && !HAVE_DECL_ISASCII
+/* Test whether C is a 7-bit US-ASCII character code. */
+extern int isascii(int c);
+#endif
+
+#endif /* ISASCII_H */
Index: m4/ChangeLog
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/ChangeLog,v
retrieving revision 1.685
diff -u -p -r1.685 ChangeLog
--- m4/ChangeLog        12 Aug 2005 07:57:44 -0000      1.685
+++ m4/ChangeLog        12 Aug 2005 11:02:09 -0000
@@ -1,5 +1,7 @@
 2005-08-12  Simon Josefsson  <address@hidden>
 
+       * isascii.m4: New file.
+
        * readline.m4: Look for termcap, curses or ncurses if required.
 
 2005-08-11  Simon Josefsson  <address@hidden>
Index: m4/isascii.m4
===================================================================
RCS file: m4/isascii.m4
diff -N m4/isascii.m4
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ m4/isascii.m4       12 Aug 2005 11:02:09 -0000
@@ -0,0 +1,19 @@
+# isascii.m4 serial 1
+dnl Copyright (C) 2005 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_ISASCII],
+[
+  AC_LIBSOURCES([isascii.h, isascii.c])
+
+  dnl Persuade glibc <ctype.h> to declare isascii().
+  AC_REQUIRE([AC_GNU_SOURCE])
+ 
+  AC_REPLACE_FUNCS(isascii)
+  AC_CHECK_DECLS_ONCE(isascii)
+])
+
+# Prerequisites of lib/isascii.h.
+AC_DEFUN([gl_PREREQ_ISASCII], [:])
Index: modules/isascii
===================================================================
RCS file: modules/isascii
diff -N modules/isascii
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ modules/isascii     12 Aug 2005 11:02:09 -0000
@@ -0,0 +1,22 @@
+Description:
+isascii() function: test for a 7-bit US-ASCII character
+
+Files:
+lib/isascii.h
+lib/isascii.c
+m4/isascii.m4
+
+Depends-on:
+
+configure.ac:
+gl_FUNC_ISASCII
+
+Makefile.am:
+
+Include:
+
+License:
+LGPL
+
+Maintainer:
+Simon Josefsson