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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /stdio/vsscanf.c
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initial import
Diffstat (limited to 'stdio/vsscanf.c')
-rw-r--r--stdio/vsscanf.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/stdio/vsscanf.c b/stdio/vsscanf.c
new file mode 100644
index 0000000000..6f027d5065
--- /dev/null
+++ b/stdio/vsscanf.c
@@ -0,0 +1,58 @@
+/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#undef	vsscanf
+
+
+/* Read formatted input from S according to the format
+   string FORMAT, using the argument list in ARG.  */
+int
+DEFUN(__vsscanf, (s, format, arg),
+      CONST char *s AND CONST char *format AND va_list arg)
+{
+  FILE f;
+
+  if (s == NULL)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  memset((PTR) &f, 0, sizeof(f));
+  f.__magic = _IOMAGIC;
+  f.__mode.__read = 1;
+  f.__bufp = f.__buffer = (char *) s;
+  f.__bufsize = strlen(s);
+  f.__get_limit = f.__buffer + f.__bufsize;
+  f.__put_limit = f.__buffer;
+  /* After the buffer is empty (strlen(S) characters have been read),
+     any more read attempts will get EOF.  */
+  f.__room_funcs.__input = NULL;
+  f.__seen = 1;
+
+  return __vfscanf(&f, format, arg);
+}
+
+
+weak_alias (__vsscanf, vsscanf)