/***********************************************************************

*                                                                      *

*               This software is part of the ast package               *

*          Copyright (c) 1985-2012 AT&T Intellectual Property          *

*                      and is licensed under the                       *

*                 Eclipse Public License, Version 1.0                  *

*                    by AT&T Intellectual Property                     *

*                                                                      *

*                A copy of the License is available at                 *

*          http://www.eclipse.org/org/documents/epl-v10.html           *

*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

*                                                                      *

*              Information and Software Systems Research               *

*                            AT&T Research                             *

*                           Florham Park NJ                            *

*                                                                      *

*                 Glenn Fowler <gsf@research.att.com>                  *

*                  David Korn <dgk@research.att.com>                   *

*                   Phong Vo <kpv@research.att.com>                    *

*                                                                      *

***********************************************************************/

#pragma prototyped

/*

 * Glenn Fowler

 * AT&T Research

 *

 * string vector load support

 */

#include <ast.h>

#include <ls.h>

#include <vecargs.h>

/*

 * load a string vector from lines in file

 */

char**

vecfile(const char* file)

{

	register int	n;

	register char*	buf;

	register char**	vec;

	int		fd;

	struct stat	st;

	vec = 0;

	if ((fd = open(file, O_RDONLY|O_cloexec)) >= 0)

	{

		if (!fstat(fd, &st) && S_ISREG(st.st_mode) && (n = st.st_size) > 0 && (buf = newof(0, char, n + 1, 0)))

		{

			if (read(fd, buf, n) == n)

			{

				buf[n] = 0;

				vec = vecload(buf);

			}

			if (!vec) free(buf);

		}

		close(fd);

	}

	return(vec);

}