1 files changed, 115 insertions, 0 deletions
diff --git a/newlib/libc/stdio/vsniprintf.c b/newlib/libc/stdio/vsniprintf.c
new file mode 100644
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+++ b/newlib/libc/stdio/vsniprintf.c
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+/*
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*
+FUNCTION
+<<vsniprintf>>---write formatted output (integer only)
+
+INDEX
+	vsniprintf
+
+ANSI_SYNOPSIS
+        #include <stdio.h>
+
+        int vsniprintf(char *<[str]>, size_t <[size]>, const char *<[fmt]>, va_list <[list]>);
+
+TRAD_SYNOPSIS
+        #include <stdio.h>
+
+        int vsnprintf(<[str]>, <[size]>, <[fmt]>, <[list]>)
+        char *<[str]>;
+        size_t <[size]>;
+        char *<[fmt]>;
+        va_list <[list]>;
+
+DESCRIPTION
+<<vsniprintf>> is a restricted version of <<vsnprintf>>: it has the same
+arguments and behavior, save that it cannot perform any floating-point
+formatting: the <<f>>, <<g>>, <<G>>, <<e>>, and <<F>> type specifiers
+are not recognized.
+
+RETURNS
+        <<vsniprintf>> returns the number of bytes in the output string,
+        save that the concluding <<NULL>> is not counted.
+        <<vsniprintf>> returns when the end of the format string is
+        encountered.
+
+PORTABILITY
+<<vsniprintf>> is not required by ANSI C.
+
+Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
+<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
+*/
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "%W% (Berkeley) %G%";
+#endif /* LIBC_SCCS and not lint */
+
+#include <_ansi.h>
+#include <reent.h>
+#include <stdio.h>
+#include <limits.h>
+#ifdef _HAVE_STDC
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+#ifndef _REENT_ONLY
+
+int
+_DEFUN(vsniprintf, (str, size, fmt, ap),
+       char *str        _AND
+       size_t size      _AND
+       _CONST char *fmt _AND
+       va_list ap)
+{
+  int ret;
+  FILE f;
+
+  f._flags = __SWR | __SSTR;
+  f._bf._base = f._p = (unsigned char *) str;
+  f._bf._size = f._w = (size > 0 ? size - 1 : 0);
+  f._file = -1;  /* No file. */
+  ret = _vfiprintf_r (_REENT, &f, fmt, ap);
+  if (size > 0)
+    *f._p = 0;
+  return ret;
+}
+
+#endif /* !_REENT_ONLY */
+
+int
+_DEFUN(_vsniprintf_r, (ptr, str, size, fmt, ap),
+       struct _reent *ptr _AND
+       char *str          _AND
+       size_t size        _AND
+       _CONST char *fmt   _AND
+       va_list ap)
+{
+  int ret;
+  FILE f;
+
+  f._flags = __SWR | __SSTR;
+  f._bf._base = f._p = (unsigned char *) str;
+  f._bf._size = f._w = (size > 0 ? size - 1 : 0);
+  f._file = -1;  /* No file. */
+  ret = _vfiprintf_r (ptr, &f, fmt, ap);
+  if (size > 0)
+    *f._p = 0;
+  return ret;
+}