1998-08-21 03:17:42 +00:00
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/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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2003-08-25 23:30:41 +00:00
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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1998-08-21 03:17:42 +00:00
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#include <stand.h>
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#include <string.h>
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#include "bootstrap.h"
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2018-04-16 08:41:44 +00:00
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const char *command_errmsg;
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2016-08-20 16:23:19 +00:00
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/* XXX should have procedural interface for setting, size limit? */
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char command_errbuf[COMMAND_ERRBUFSZ];
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1998-10-31 02:53:12 +00:00
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1999-02-01 06:08:21 +00:00
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static int page_file(char *filename);
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1998-10-31 02:53:12 +00:00
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/*
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* Help is read from a formatted text file.
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*
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* Entries in the file are formatted as
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# Ttopic [Ssubtopic] Ddescription
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help
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text
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here
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#
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*
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* Note that for code simplicity's sake, the above format must be followed
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* exactly.
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*
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* Subtopic entries must immediately follow the topic (this is used to
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* produce the listing of subtopics).
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*
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* If no argument(s) are supplied by the user, the help for 'help' is displayed.
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*/
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1998-08-21 03:17:42 +00:00
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COMMAND_SET(help, "help", "detailed help", command_help);
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static int
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1998-10-31 02:53:12 +00:00
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help_getnext(int fd, char **topic, char **subtopic, char **desc)
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1998-08-21 03:17:42 +00:00
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{
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1998-10-31 02:53:12 +00:00
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char line[81], *cp, *ep;
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2018-04-16 07:26:23 +00:00
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/* Make sure we provide sane values. */
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*topic = *subtopic = *desc = NULL;
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1998-10-31 02:53:12 +00:00
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for (;;) {
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if (fgetstr(line, 80, fd) < 0)
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return(0);
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if ((strlen(line) < 3) || (line[0] != '#') || (line[1] != ' '))
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continue;
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cp = line + 2;
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while((cp != NULL) && (*cp != 0)) {
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ep = strchr(cp, ' ');
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if ((*cp == 'T') && (*topic == NULL)) {
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if (ep != NULL)
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*ep++ = 0;
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*topic = strdup(cp + 1);
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} else if ((*cp == 'S') && (*subtopic == NULL)) {
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if (ep != NULL)
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*ep++ = 0;
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*subtopic = strdup(cp + 1);
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} else if (*cp == 'D') {
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*desc = strdup(cp + 1);
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ep = NULL;
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}
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cp = ep;
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}
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if (*topic == NULL) {
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2018-01-23 18:01:27 +00:00
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free(*subtopic);
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free(*desc);
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2018-04-16 12:46:14 +00:00
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*subtopic = *desc = NULL;
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1998-10-31 02:53:12 +00:00
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continue;
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}
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return(1);
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}
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}
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2004-09-29 13:43:55 +00:00
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static int
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1998-10-31 02:53:12 +00:00
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help_emitsummary(char *topic, char *subtopic, char *desc)
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{
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int i;
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pager_output(" ");
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pager_output(topic);
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i = strlen(topic);
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if (subtopic != NULL) {
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pager_output(" ");
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pager_output(subtopic);
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i += strlen(subtopic) + 1;
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}
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if (desc != NULL) {
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do {
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pager_output(" ");
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} while (i++ < 30);
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pager_output(desc);
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}
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2004-09-29 13:43:55 +00:00
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return (pager_output("\n"));
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1998-10-31 02:53:12 +00:00
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}
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static int
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command_help(int argc, char *argv[])
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{
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char buf[81]; /* XXX buffer size? */
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int hfd, matched, doindex;
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char *topic, *subtopic, *t, *s, *d;
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1998-08-21 03:17:42 +00:00
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/* page the help text from our load path */
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2017-04-13 17:11:49 +00:00
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snprintf(buf, sizeof(buf), "%s/boot/loader.help", getenv("loaddev"));
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1998-10-31 02:53:12 +00:00
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if ((hfd = open(buf, O_RDONLY)) < 0) {
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1998-08-21 03:17:42 +00:00
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printf("Verbose help not available, use '?' to list commands\n");
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1998-10-31 02:53:12 +00:00
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return(CMD_OK);
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}
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/* pick up request from arguments */
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topic = subtopic = NULL;
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switch(argc) {
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case 3:
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subtopic = strdup(argv[2]);
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case 2:
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topic = strdup(argv[1]);
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break;
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case 1:
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topic = strdup("help");
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break;
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default:
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command_errmsg = "usage is 'help <topic> [<subtopic>]";
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2009-10-28 10:06:27 +00:00
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close(hfd);
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1998-10-31 02:53:12 +00:00
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return(CMD_ERROR);
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}
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/* magic "index" keyword */
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doindex = !strcmp(topic, "index");
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matched = doindex;
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/* Scan the helpfile looking for help matching the request */
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pager_open();
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while(help_getnext(hfd, &t, &s, &d)) {
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if (doindex) { /* dink around formatting */
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2004-09-29 13:43:55 +00:00
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if (help_emitsummary(t, s, d))
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break;
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1998-10-31 02:53:12 +00:00
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} else if (strcmp(topic, t)) {
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/* topic mismatch */
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2018-01-23 18:01:27 +00:00
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if (matched) /* nothing more on this topic, stop scanning */
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1998-10-31 02:53:12 +00:00
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break;
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} else {
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/* topic matched */
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matched = 1;
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if (((subtopic == NULL) && (s == NULL)) ||
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((subtopic != NULL) && (s != NULL) && !strcmp(subtopic, s))) {
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/* exact match, print text */
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2018-01-23 18:01:27 +00:00
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while ((fgetstr(buf, 80, hfd) >= 0) && (buf[0] != '#')) {
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1999-12-28 07:19:22 +00:00
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if (pager_output(buf))
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break;
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if (pager_output("\n"))
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break;
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1998-10-31 02:53:12 +00:00
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}
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} else if ((subtopic == NULL) && (s != NULL)) {
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/* topic match, list subtopics */
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2004-09-29 13:43:55 +00:00
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if (help_emitsummary(t, s, d))
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break;
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1998-10-31 02:53:12 +00:00
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}
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}
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free(t);
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free(s);
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free(d);
|
2018-01-23 18:01:27 +00:00
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t = s = d = NULL;
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1998-10-31 02:53:12 +00:00
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}
|
2018-01-23 18:01:27 +00:00
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free(t);
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free(s);
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free(d);
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1998-10-31 02:53:12 +00:00
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pager_close();
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close(hfd);
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if (!matched) {
|
2016-08-20 16:23:19 +00:00
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snprintf(command_errbuf, sizeof(command_errbuf),
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"no help available for '%s'", topic);
|
1999-03-08 10:32:39 +00:00
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free(topic);
|
2018-01-23 18:01:27 +00:00
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free(subtopic);
|
1998-10-31 02:53:12 +00:00
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return(CMD_ERROR);
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}
|
1999-03-08 10:32:39 +00:00
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free(topic);
|
2018-01-23 18:01:27 +00:00
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free(subtopic);
|
1998-08-21 03:17:42 +00:00
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return(CMD_OK);
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}
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COMMAND_SET(commandlist, "?", "list commands", command_commandlist);
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|
|
2016-05-18 14:09:56 +00:00
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|
/*
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* Please note: although we use the pager for the list of commands,
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* this routine is called from the ? FORTH function which then
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* unconditionally prints some commands. This will lead to anomalous
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* behavior. There's no 'pager_output' binding to FORTH to allow
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* things to work right, so I'm documenting the bug rather than
|
2016-05-18 15:57:13 +00:00
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* fixing it.
|
2016-05-18 14:09:56 +00:00
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*/
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1998-08-21 03:17:42 +00:00
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static int
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command_commandlist(int argc, char *argv[])
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{
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struct bootblk_command **cmdp;
|
2004-11-12 13:27:49 +00:00
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int res;
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char name[20];
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res = 0;
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pager_open();
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res = pager_output("Available commands:\n");
|
1998-10-21 20:07:05 +00:00
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SET_FOREACH(cmdp, Xcommand_set) {
|
2004-11-12 13:27:49 +00:00
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if (res)
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break;
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if (((*cmdp)->c_name != NULL) && ((*cmdp)->c_desc != NULL)) {
|
2018-04-16 08:15:50 +00:00
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snprintf(name, sizeof(name), " %-15s ", (*cmdp)->c_name);
|
2004-11-12 13:27:49 +00:00
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pager_output(name);
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pager_output((*cmdp)->c_desc);
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res = pager_output("\n");
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}
|
1998-10-21 20:07:05 +00:00
|
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}
|
2004-11-12 13:27:49 +00:00
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pager_close();
|
1998-08-21 03:17:42 +00:00
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return(CMD_OK);
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|
|
|
}
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|
|
|
|
|
|
/*
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|
|
|
* XXX set/show should become set/echo if we have variable
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* substitution happening.
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*/
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COMMAND_SET(show, "show", "show variable(s)", command_show);
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static int
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command_show(int argc, char *argv[])
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|
|
|
{
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|
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struct env_var *ev;
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char *cp;
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|
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|
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if (argc < 2) {
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|
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/*
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|
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* With no arguments, print everything.
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|
|
|
*/
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|
|
pager_open();
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|
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for (ev = environ; ev != NULL; ev = ev->ev_next) {
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pager_output(ev->ev_name);
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cp = getenv(ev->ev_name);
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|
|
|
if (cp != NULL) {
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|
|
pager_output("=");
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|
pager_output(cp);
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|
|
|
}
|
2000-06-14 09:05:03 +00:00
|
|
|
if (pager_output("\n"))
|
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|
|
break;
|
1998-08-21 03:17:42 +00:00
|
|
|
}
|
|
|
|
pager_close();
|
|
|
|
} else {
|
|
|
|
if ((cp = getenv(argv[1])) != NULL) {
|
|
|
|
printf("%s\n", cp);
|
|
|
|
} else {
|
2016-08-20 16:23:19 +00:00
|
|
|
snprintf(command_errbuf, sizeof(command_errbuf),
|
|
|
|
"variable '%s' not found", argv[1]);
|
1998-08-21 03:17:42 +00:00
|
|
|
return(CMD_ERROR);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return(CMD_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
COMMAND_SET(set, "set", "set a variable", command_set);
|
|
|
|
|
|
|
|
static int
|
|
|
|
command_set(int argc, char *argv[])
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (argc != 2) {
|
|
|
|
command_errmsg = "wrong number of arguments";
|
|
|
|
return(CMD_ERROR);
|
|
|
|
} else {
|
|
|
|
if ((err = putenv(argv[1])) != 0) {
|
|
|
|
command_errmsg = strerror(err);
|
|
|
|
return(CMD_ERROR);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return(CMD_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
COMMAND_SET(unset, "unset", "unset a variable", command_unset);
|
|
|
|
|
|
|
|
static int
|
|
|
|
command_unset(int argc, char *argv[])
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (argc != 2) {
|
|
|
|
command_errmsg = "wrong number of arguments";
|
|
|
|
return(CMD_ERROR);
|
|
|
|
} else {
|
|
|
|
if ((err = unsetenv(argv[1])) != 0) {
|
|
|
|
command_errmsg = strerror(err);
|
|
|
|
return(CMD_ERROR);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return(CMD_OK);
|
|
|
|
}
|
|
|
|
|
2004-11-13 17:04:55 +00:00
|
|
|
COMMAND_SET(echo, "echo", "echo arguments", command_echo);
|
1998-09-03 02:10:09 +00:00
|
|
|
|
|
|
|
static int
|
|
|
|
command_echo(int argc, char *argv[])
|
|
|
|
{
|
|
|
|
char *s;
|
|
|
|
int nl, ch;
|
|
|
|
|
|
|
|
nl = 0;
|
|
|
|
optind = 1;
|
1999-01-11 06:41:32 +00:00
|
|
|
optreset = 1;
|
1998-09-03 02:10:09 +00:00
|
|
|
while ((ch = getopt(argc, argv, "n")) != -1) {
|
|
|
|
switch(ch) {
|
|
|
|
case 'n':
|
|
|
|
nl = 1;
|
|
|
|
break;
|
|
|
|
case '?':
|
|
|
|
default:
|
|
|
|
/* getopt has already reported an error */
|
|
|
|
return(CMD_OK);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
argv += (optind);
|
|
|
|
argc -= (optind);
|
|
|
|
|
|
|
|
s = unargv(argc, argv);
|
|
|
|
if (s != NULL) {
|
2000-07-10 06:33:55 +00:00
|
|
|
printf("%s", s);
|
1998-09-03 02:10:09 +00:00
|
|
|
free(s);
|
|
|
|
}
|
|
|
|
if (!nl)
|
|
|
|
printf("\n");
|
|
|
|
return(CMD_OK);
|
|
|
|
}
|
|
|
|
|
1998-10-07 02:38:26 +00:00
|
|
|
/*
|
|
|
|
* A passable emulation of the sh(1) command of the same name.
|
|
|
|
*/
|
|
|
|
|
2004-11-13 17:04:55 +00:00
|
|
|
COMMAND_SET(read, "read", "read input from the terminal", command_read);
|
1998-10-07 02:38:26 +00:00
|
|
|
|
|
|
|
static int
|
|
|
|
command_read(int argc, char *argv[])
|
|
|
|
{
|
|
|
|
char *prompt;
|
|
|
|
int timeout;
|
|
|
|
time_t when;
|
|
|
|
char *cp;
|
|
|
|
char *name;
|
|
|
|
char buf[256]; /* XXX size? */
|
|
|
|
int c;
|
|
|
|
|
|
|
|
timeout = -1;
|
|
|
|
prompt = NULL;
|
|
|
|
optind = 1;
|
1999-01-11 06:41:32 +00:00
|
|
|
optreset = 1;
|
1998-10-07 02:38:26 +00:00
|
|
|
while ((c = getopt(argc, argv, "p:t:")) != -1) {
|
|
|
|
switch(c) {
|
|
|
|
|
|
|
|
case 'p':
|
|
|
|
prompt = optarg;
|
|
|
|
break;
|
|
|
|
case 't':
|
|
|
|
timeout = strtol(optarg, &cp, 0);
|
|
|
|
if (cp == optarg) {
|
2016-08-20 16:23:19 +00:00
|
|
|
snprintf(command_errbuf, sizeof(command_errbuf),
|
|
|
|
"bad timeout '%s'", optarg);
|
1998-10-07 02:38:26 +00:00
|
|
|
return(CMD_ERROR);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return(CMD_OK);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
argv += (optind);
|
|
|
|
argc -= (optind);
|
|
|
|
name = (argc > 0) ? argv[0]: NULL;
|
|
|
|
|
|
|
|
if (prompt != NULL)
|
2000-07-10 06:33:55 +00:00
|
|
|
printf("%s", prompt);
|
1998-10-07 02:38:26 +00:00
|
|
|
if (timeout >= 0) {
|
|
|
|
when = time(NULL) + timeout;
|
|
|
|
while (!ischar())
|
|
|
|
if (time(NULL) >= when)
|
|
|
|
return(CMD_OK); /* is timeout an error? */
|
|
|
|
}
|
|
|
|
|
|
|
|
ngets(buf, sizeof(buf));
|
|
|
|
|
|
|
|
if (name != NULL)
|
|
|
|
setenv(name, buf, 1);
|
|
|
|
return(CMD_OK);
|
|
|
|
}
|
1998-10-31 02:53:12 +00:00
|
|
|
|
1999-02-01 06:08:21 +00:00
|
|
|
/*
|
|
|
|
* File pager
|
|
|
|
*/
|
|
|
|
COMMAND_SET(more, "more", "show contents of a file", command_more);
|
|
|
|
|
|
|
|
static int
|
|
|
|
command_more(int argc, char *argv[])
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
int res;
|
|
|
|
char line[80];
|
|
|
|
|
|
|
|
res=0;
|
|
|
|
pager_open();
|
|
|
|
for (i = 1; (i < argc) && (res == 0); i++) {
|
2018-04-16 08:15:50 +00:00
|
|
|
snprintf(line, sizeof(line), "*** FILE %s BEGIN ***\n", argv[i]);
|
2001-02-22 11:22:14 +00:00
|
|
|
if (pager_output(line))
|
|
|
|
break;
|
1999-02-01 06:08:21 +00:00
|
|
|
res = page_file(argv[i]);
|
|
|
|
if (!res) {
|
2018-04-16 08:15:50 +00:00
|
|
|
snprintf(line, sizeof(line), "*** FILE %s END ***\n", argv[i]);
|
2001-02-22 11:22:14 +00:00
|
|
|
res = pager_output(line);
|
1999-02-01 06:08:21 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
pager_close();
|
|
|
|
|
|
|
|
if (res == 0)
|
|
|
|
return CMD_OK;
|
|
|
|
else
|
|
|
|
return CMD_ERROR;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
page_file(char *filename)
|
|
|
|
{
|
|
|
|
int result;
|
|
|
|
|
|
|
|
result = pager_file(filename);
|
|
|
|
|
2016-08-20 16:23:19 +00:00
|
|
|
if (result == -1) {
|
|
|
|
snprintf(command_errbuf, sizeof(command_errbuf),
|
|
|
|
"error showing %s", filename);
|
|
|
|
}
|
1999-02-01 06:08:21 +00:00
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
1998-10-31 02:53:12 +00:00
|
|
|
/*
|
|
|
|
* List all disk-like devices
|
|
|
|
*/
|
1999-01-09 02:34:48 +00:00
|
|
|
COMMAND_SET(lsdev, "lsdev", "list all devices", command_lsdev);
|
1998-10-31 02:53:12 +00:00
|
|
|
|
|
|
|
static int
|
|
|
|
command_lsdev(int argc, char *argv[])
|
|
|
|
{
|
|
|
|
int verbose, ch, i;
|
|
|
|
char line[80];
|
|
|
|
|
|
|
|
verbose = 0;
|
|
|
|
optind = 1;
|
1999-01-11 06:41:32 +00:00
|
|
|
optreset = 1;
|
1998-10-31 02:53:12 +00:00
|
|
|
while ((ch = getopt(argc, argv, "v")) != -1) {
|
|
|
|
switch(ch) {
|
|
|
|
case 'v':
|
|
|
|
verbose = 1;
|
|
|
|
break;
|
|
|
|
case '?':
|
|
|
|
default:
|
|
|
|
/* getopt has already reported an error */
|
|
|
|
return(CMD_OK);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
argv += (optind);
|
|
|
|
argc -= (optind);
|
|
|
|
|
|
|
|
pager_open();
|
|
|
|
for (i = 0; devsw[i] != NULL; i++) {
|
|
|
|
if (devsw[i]->dv_print != NULL){
|
2016-11-19 08:54:21 +00:00
|
|
|
if (devsw[i]->dv_print(verbose))
|
|
|
|
break;
|
1998-10-31 02:53:12 +00:00
|
|
|
} else {
|
2018-04-16 08:15:50 +00:00
|
|
|
snprintf(line, sizeof(line), "%s: (unknown)\n", devsw[i]->dv_name);
|
2001-02-22 11:22:14 +00:00
|
|
|
if (pager_output(line))
|
|
|
|
break;
|
1998-10-31 02:53:12 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
pager_close();
|
|
|
|
return(CMD_OK);
|
|
|
|
}
|
1999-01-09 02:34:48 +00:00
|
|
|
|