Libc-320.tar.gz

[apple/libc.git] / stdio / FreeBSD / asprintf.c

diff --git a/stdio/FreeBSD/asprintf.c b/stdio/FreeBSD/asprintf.c
new file mode 100644 (file)
index 0000000..02362b0
--- /dev/null
+++ b/stdio/FreeBSD/asprintf.c
@@ -0,0 +1,71 @@
+/*     $OpenBSD: asprintf.c,v 1.8 2002/02/19 19:39:36 millert Exp $    */
+
+/*
+ * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author 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 ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/lib/libc/stdio/asprintf.c,v 1.13 2002/09/26 13:09:48 tjr Exp $");
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdarg.h>
+
+#include "local.h"
+
+int
+asprintf(char **str, char const *fmt, ...)
+{
+       int ret;
+       va_list ap;
+       FILE f;
+       struct __sFILEX ext;
+
+       f._file = -1;
+       f._flags = __SWR | __SSTR | __SALC;
+       f._bf._base = f._p = (unsigned char *)malloc(128);
+       if (f._bf._base == NULL) {
+               *str = NULL;
+               errno = ENOMEM;
+               return (-1);
+       }
+       f._bf._size = f._w = 127;               /* Leave room for the NUL */
+       f._extra = &ext;
+       INITEXTRA(&f);
+       va_start(ap, fmt);
+       ret = __vfprintf(&f, fmt, ap);          /* Use unlocked __vfprintf */
+       va_end(ap);
+       if (ret < 0) {
+               free(f._bf._base);
+               *str = NULL;
+               errno = ENOMEM;
+               return (-1);
+       }
+       *f._p = '\0';
+       *str = (char *)f._bf._base;
+       return (ret);
+}