2002-07-04 Jeff Johnston <jjohnstn@redhat.com>

* libc/stdio/Makefile.am: Add asprintf.c and vasprintf.c.
        * libc/stdio/Makefile.in: Regenerated.
        * libc/stdio/asprintf.c: New file.
        * libc/stdio/vasprintf.c: Ditto.
        * libc/stdio/fvwrite.c: Add code to dynamically reallocate
        the buffer for asprintf support.
        * libc/stdio/sprintf.c: Add asprintf documentation.
        * libc/stdio/vfprintf.c: Add vasprintf documentation.
        * libc/include/stdio.h: Add new prototypes.

newlib/libc/stdio/asprintf.c

@@ -0,0 +1,95 @@
+/*
+ * 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.
+ */
+
+/* This code was copied from sprintf.c */
+
+#include <stdio.h>
+#ifdef _HAVE_STDC
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+#include <limits.h>
+#include <_ansi.h>
+#include "local.h"
+
+int
+#ifdef _HAVE_STDC
+_DEFUN (asprintf_r, (ptr, strp, fmt), struct _reent *ptr _AND char **strp _AND _CONST char *fmt _DOTS)
+#else
+_asprintf_r (ptr, strp, fmt, va_alist)
+     struct _reent *ptr;
+     char **strp;
+     _CONST char *fmt;
+     va_dcl
+#endif
+{
+  int ret;
+  va_list ap;
+  FILE f;
+
+  /* mark a zero-length reallocatable buffer */
+  f._flags = __SWR | __SSTR | __SMBF;
+  f._bf._base = f._p = NULL;
+  f._bf._size = f._w = 0;
+  f._data = ptr;
+#ifdef _HAVE_STDC
+  va_start (ap, fmt);
+#else
+  va_start (ap);
+#endif
+  ret = vfprintf (&f, fmt, ap);
+  va_end (ap);
+  *f._p = 0;
+  *strp = f._bf._base;
+  return (ret);
+}
+
+#ifndef _REENT_ONLY
+
+int
+#ifdef _HAVE_STDC
+_DEFUN (asprintf, (strp, fmt), char **strp _AND _CONST char *fmt _DOTS)
+#else
+asprintf (strp, fmt, va_alist)
+     char **strp;
+     _CONST char *fmt;
+     va_dcl
+#endif
+{
+  int ret;
+  va_list ap;
+  FILE f;
+  
+  /* mark a zero-length reallocatable buffer */
+  f._flags = __SWR | __SSTR | __SMBF;
+  f._bf._base = f._p = NULL;
+  f._bf._size = f._w = 0;
+  f._data = _REENT;
+#ifdef _HAVE_STDC
+  va_start (ap, fmt);
+#else
+  va_start (ap);
+#endif
+  ret = vfprintf (&f, fmt, ap);
+  va_end (ap);
+  *f._p = 0;
+  *strp = f._bf._base;
+  return (ret);
+}
+
+#endif