1 files changed, 80 insertions, 0 deletions
diff --git a/lib/fprintf.c b/lib/fprintf.c
new file mode 100644
index 0000000000..2eee2757a6
--- /dev/null
+++ b/lib/fprintf.c
@@ -0,0 +1,80 @@
+/* Formatted output to a stream.
+   Copyright (C) 2004, 2006-2007 Free Software Foundation, Inc.
+
+   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.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Specification.  */
+#include <stdio.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stdlib.h>
+
+#include "fseterr.h"
+#include "vasnprintf.h"
+
+/* Some systems, like OSF/1 4.0 and Woe32, don't have EOVERFLOW.  */
+#ifndef EOVERFLOW
+# define EOVERFLOW E2BIG
+#endif
+
+/* Print formatted output to the stream FP.
+   Return string length of formatted string.  On error, return a negative
+   value.  */
+int
+fprintf (FILE *fp, const char *format, ...)
+{
+  char buf[2000];
+  char *output;
+  size_t len;
+  size_t lenbuf = sizeof (buf);
+  va_list args;
+
+  va_start (args, format);
+  output = vasnprintf (buf, &lenbuf, format, args);
+  len = lenbuf;
+  va_end (args);
+
+  if (!output)
+    {
+      fseterr (fp);
+      return -1;
+    }
+
+  if (fwrite (output, 1, len, fp) < len)
+    {
+      if (output != buf)
+	{
+	  int saved_errno = errno;
+	  free (output);
+	  errno = saved_errno;
+	}
+      return -1;
+    }
+
+  if (len > INT_MAX)
+    {
+      errno = EOVERFLOW;
+      fseterr (fp);
+      return -1;
+    }
+
+  return len;
+}