ddb.c revision 176833
125184Sjkh/*-
225184Sjkh * Copyright (c) 2007 Robert N. M. Watson
341371Sjkoshy * All rights reserved.
425184Sjkh *
525184Sjkh * Redistribution and use in source and binary forms, with or without
625184Sjkh * modification, are permitted provided that the following conditions
725184Sjkh * are met:
825184Sjkh * 1. Redistributions of source code must retain the above copyright
925184Sjkh *    notice, this list of conditions and the following disclaimer.
1025184Sjkh * 2. Redistributions in binary form must reproduce the above copyright
1125184Sjkh *    notice, this list of conditions and the following disclaimer in the
1225184Sjkh *    documentation and/or other materials provided with the distribution.
1325184Sjkh *
1425184Sjkh * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
1525184Sjkh * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1625184Sjkh * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1725184Sjkh * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
1825184Sjkh * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1925184Sjkh * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2025184Sjkh * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2125184Sjkh * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2225184Sjkh * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
2325184Sjkh * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2425184Sjkh * SUCH DAMAGE.
2525184Sjkh */
2625184Sjkh
2725184Sjkh#include <sys/cdefs.h>
2840006Sphk__FBSDID("$FreeBSD: head/sbin/ddb/ddb.c 176833 2008-03-05 17:51:06Z brooks $");
2940006Sphk
3040006Sphk#include <err.h>
3140006Sphk#include <stdio.h>
3240006Sphk#include <stdlib.h>
3340006Sphk#include <string.h>
3425184Sjkh#include <sysexits.h>
3525184Sjkh#include <unistd.h>
3625184Sjkh
3733682Sbrian#include "ddb.h"
3825184Sjkh
3925184Sjkhvoid ddb_readfile(char *file);
4025184Sjkhvoid ddb_main(int argc, char *argv[]);
4125184Sjkh
4225184Sjkhvoid
4325184Sjkhusage(void)
4425184Sjkh{
4525184Sjkh
4625184Sjkh	fprintf(stderr, "usage:\n");
4725184Sjkh	fprintf(stderr, "ddb script scriptname\n");
4825184Sjkh	fprintf(stderr, "ddb script scriptname=script\n");
4925184Sjkh	fprintf(stderr, "ddb scripts\n");
5025184Sjkh	fprintf(stderr, "ddb unscript scriptname\n");
5125184Sjkh	exit(EX_USAGE);
5225184Sjkh}
5325184Sjkh
5425184Sjkhvoid
5525184Sjkhddb_readfile(char *filename)
5625184Sjkh{
5725184Sjkh	char    buf[BUFSIZ];
5825184Sjkh	FILE*	f;
5925184Sjkh
6025184Sjkh	if ((f = fopen(filename, "r")) == NULL)
6125184Sjkh		err(EX_UNAVAILABLE, "fopen: %s", filename);
6225184Sjkh
6329300Sdanny#define WHITESP		" \t"
6429300Sdanny#define MAXARG	 	2
6529300Sdanny	while (fgets(buf, BUFSIZ, f)) {
6629300Sdanny		int argc = 0;
6732382Salex		char *argv[MAXARG];
6832382Salex		size_t spn;
6932382Salex
7029300Sdanny		spn = strlen(buf);
7129300Sdanny		if (buf[spn-1] == '\n')
7229300Sdanny			buf[spn-1] = '\0';
7329300Sdanny
7441077Speter		spn = strspn(buf, WHITESP);
7529300Sdanny		argv[0] = buf + spn;
7629300Sdanny		if (*argv[0] == '#' || *argv[0] == '\0')
7729300Sdanny			continue;
7829300Sdanny		argc++;
7929300Sdanny
8029300Sdanny		spn = strcspn(argv[0], WHITESP);
8129300Sdanny		argv[1] = argv[0] + spn + strspn(argv[0] + spn, WHITESP);;
8229300Sdanny		argv[0][spn] = '\0';
8329300Sdanny		if (*argv[1] != '\0')
8429300Sdanny			argc++;
8529300Sdanny
8625364Sjkh#ifdef DEBUG
8729300Sdanny		{
8829300Sdanny			int i;
8933337Salex			printf("argc = %d\n", argc);
9033337Salex			for (i = 0; i < argc; i++) {
9133149Salex				printf("arg[%d] = %s\n", i, argv[i]);
9233149Salex			}
9333149Salex		}
9433149Salex#endif
9529300Sdanny		ddb_main(argc, argv);
9625184Sjkh	}
9725184Sjkh}
9840006Sphk
9940006Sphkvoid
10040006Sphkddb_main(int argc, char *argv[])
10140006Sphk{
10240006Sphk
10329300Sdanny	if (argc < 1)
10429300Sdanny		usage();
10525184Sjkh
10625184Sjkh	if (strcmp(argv[0], "script") == 0)
10725184Sjkh		ddb_script(argc, argv);
10825184Sjkh	else if (strcmp(argv[0], "scripts") == 0)
10925184Sjkh		ddb_scripts(argc, argv);
11025184Sjkh	else if (strcmp(argv[0], "unscript") == 0)
11125184Sjkh		ddb_unscript(argc, argv);
11225184Sjkh	else
11325184Sjkh		usage();
11425184Sjkh}
11525184Sjkh
11625184Sjkhint
11725184Sjkhmain(int argc, char *argv[])
11825184Sjkh{
11927218Spst
12027218Spst	/*
12127218Spst	 * If we've only got one argument and it's an absolute path to a file,
12227218Spst	 * interpret as a file to be read in.
12327218Spst	 */
12439267Sjkoshy	if (argc == 2 && argv[1][0] == '/' && access(argv[1], R_OK) == 0)
12539267Sjkoshy		ddb_readfile(argv[1]);
12639267Sjkoshy	else
12739267Sjkoshy		ddb_main(argc-1, argv+1);
12839267Sjkoshy	exit(EX_OK);
12925184Sjkh}
13025365Sjkh