xref: /titanic_41/usr/src/lib/libast/common/vec/vecfile.c (revision 96ea4e937aa9d4d9bcb316497c698a4f411380b7)
1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
5 *                      and is licensed under the                       *
6 *                  Common Public License, Version 1.0                  *
7 *                    by AT&T Intellectual Property                     *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
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  * string vector load support
28  */
29 
30 #include <ast.h>
31 #include <ls.h>
32 #include <vecargs.h>
33 
34 /*
35  * load a string vector from lines in file
36  */
37 
38 char**
39 vecfile(const char* file)
40 {
41 	register int	n;
42 	register char*	buf;
43 	register char**	vec;
44 	int		fd;
45 	struct stat	st;
46 
47 	vec = 0;
48 	if ((fd = open(file, O_RDONLY)) >= 0)
49 	{
50 		if (!fstat(fd, &st) && S_ISREG(st.st_mode) && (n = st.st_size) > 0 && (buf = newof(0, char, n + 1, 0)))
51 		{
52 			if (read(fd, buf, n) == n)
53 			{
54 				buf[n] = 0;
55 				vec = vecload(buf);
56 			}
57 			if (!vec) free(buf);
58 		}
59 		close(fd);
60 	}
61 	return(vec);
62 }
63