1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5 *                      and is licensed under the                       *
6 *                 Eclipse Public License, Version 1.0                  *
7 *                    by AT&T Intellectual Property                     *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *          http://www.eclipse.org/org/documents/epl-v10.html           *
11 *         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
12 *                                                                      *
13 *              Information and Software Systems Research               *
14 *                            AT&T Research                             *
15 *                           Florham Park NJ                            *
16 *                                                                      *
17 *                 Glenn Fowler <gsf@research.att.com>                  *
18 *                  David Korn <dgk@research.att.com>                   *
19 *                   Phong Vo <kpv@research.att.com>                    *
20 *                                                                      *
21 ***********************************************************************/
22 #pragma prototyped
23 /*
24  * Glenn Fowler
25  * AT&T Research
26  *
27  * sfio tmp string buffer support
28  */
29 
30 #include <sfio_t.h>
31 #include <ast.h>
32 
33 #if __OBSOLETE__ >= 20070101 /* sfstr* macros now use sfsetbuf() */
34 
35 NoN(sfstrtmp)
36 
37 #else
38 
39 #if defined(__EXPORT__)
40 #define extern	__EXPORT__
41 #endif
42 
43 /*
44  * replace buffer in string stream f for either SF_READ or SF_WRITE
45  */
46 
47 extern int
48 sfstrtmp(register Sfio_t* f, int mode, void* buf, size_t siz)
49 {
50 	if (!(f->_flags & SF_STRING))
51 		return -1;
52 	if (f->_flags & SF_MALLOC)
53 		free(f->_data);
54 	f->_flags &= ~(SF_ERROR|SF_MALLOC);
55 	f->mode = mode;
56 	f->_next = f->_data = (unsigned char*)buf;
57 	f->_endw = f->_endr = f->_endb = f->_data + siz;
58 	f->_size = siz;
59 	return 0;
60 }
61 
62 #endif
63