2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/boot/common/interp.c,v 1.22.2.5 2001/03/04 04:46:18 obrien Exp $
29 * Simple commandline interpreter, toplevel and misc.
31 * XXX may be obsoleted by BootFORTH or some other, better, interpreter.
36 #include "bootstrap.h"
40 #define RETURN(x) stackPushINT(bf_vm->pStack,!x); return(x)
42 extern FICL_VM *bf_vm;
44 #define RETURN(x) return(x)
47 #define MAXARGS 20 /* maximum number of arguments allowed */
49 static void prompt(void);
52 static int perform(int argc, char *argv[]);
58 perform(int argc, char *argv[])
61 struct bootblk_command **cmdp;
67 /* set return defaults; a successful command will override these */
68 command_errmsg = command_errbuf;
69 strcpy(command_errbuf, "no error message");
73 /* search the command set for the command */
74 SET_FOREACH(cmdp, Xcommand_set) {
75 if (((*cmdp)->c_name != NULL) && !strcmp(argv[0], (*cmdp)->c_name))
79 result = (cmd)(argc, argv);
81 command_errmsg = "unknown command";
85 #endif /* ! BOOT_FORTH */
93 char input[256]; /* big enough? */
104 * Read our default configuration
106 if(include("/boot/loader.rc")!=CMD_OK)
107 include("/boot/boot.conf");
110 * Before interacting, we might want to autoboot.
115 * Not autobooting, go manual
117 printf("\nType '?' for a list of commands, 'help' for more detailed help.\n");
118 if (getenv("prompt") == NULL)
119 setenv("prompt", "${interpret}", 1);
120 if (getenv("interpret") == NULL)
121 setenv("interpret", "ok", 1);
127 ngets(input, sizeof(input));
129 bf_vm->sourceID.i = 0;
132 if (!parse(&argc, &argv, input)) {
133 if (perform(argc, argv))
134 printf("%s: %s\n", argv[0], command_errmsg);
137 printf("parse error\n");
144 * Read commands from a file, then execute them.
146 * We store the commands in memory and close the source file so that the media
147 * holding it can safely go away while we are executing.
149 * Commands may be prefixed with '@' (so they aren't displayed) or '-' (so
150 * that the script won't stop if they fail).
152 COMMAND_SET(include, "include", "read commands from a file", command_include);
155 command_include(int argc, char *argv[])
162 * Since argv is static, we need to save it here.
164 argvbuf = (char**) calloc((u_int)argc, sizeof(char*));
165 for (i = 0; i < argc; i++)
166 argvbuf[i] = strdup(argv[i]);
169 for (i = 1; (i < argc) && (res == CMD_OK); i++)
170 res = include(argvbuf[i]);
172 for (i = 0; i < argc; i++)
184 #define SL_QUIET (1<<0)
185 #define SL_IGNOREERR (1<<1)
186 struct includeline *next;
190 include(const char *filename)
192 struct includeline *script, *se, *sp;
193 char input[256]; /* big enough? */
197 int prevsrcid, fd, line;
204 if (((fd = open(filename, O_RDONLY)) == -1)) {
205 sprintf(command_errbuf,"can't open '%s': %s\n", filename, strerror(errno));
210 * Read the script into memory.
215 while (fgetstr(input, sizeof(input), fd) >= 0) {
221 /* Discard comments */
222 if (strncmp(input+strspn(input, " "), "\\ ", 2) == 0)
226 if (input[0] == '@') {
231 if (input[0] == '-') {
233 flags |= SL_IGNOREERR;
236 /* Allocate script line structure and copy line, flags */
237 sp = malloc(sizeof(struct includeline) + strlen(cp) + 1);
238 sp->text = (char *)sp + sizeof(struct includeline);
239 strcpy(sp->text, cp);
246 if (script == NULL) {
261 prevsrcid = bf_vm->sourceID.i;
262 bf_vm->sourceID.i = fd;
265 for (sp = script; sp != NULL; sp = sp->next) {
268 res = bf_run(sp->text);
269 if (res != VM_OUTOFTEXT) {
270 sprintf(command_errbuf, "Error while including %s, in the line:\n%s", filename, sp->text);
276 /* print if not being quiet */
277 if (!(sp->flags & SL_QUIET)) {
279 printf("%s\n", sp->text);
282 /* Parse the command */
283 if (!parse(&argc, &argv, sp->text)) {
284 if ((argc > 0) && (perform(argc, argv) != 0)) {
286 printf("%s: %s\n", argv[0], command_errmsg);
287 if (!(sp->flags & SL_IGNOREERR)) {
295 printf("%s line %d: parse error\n", filename, sp->line);
305 bf_vm->sourceID.i = prevsrcid;
307 while(script != NULL) {
309 script = script->next;
316 * Emit the current prompt; use the same syntax as the parser
317 * for embedding environment variables.
322 char *pr, *p, *cp, *ev;
324 if ((cp = getenv("prompt")) == NULL)
329 if ((*p == '$') && (*(p+1) == '{')) {
330 for (cp = p + 2; (*cp != 0) && (*cp != '}'); cp++)