2 * Copyright (c) 1998 Eric P. Scott <eps@sirius.com>
3 * Copyright (c) 1998 Andrzej Bialecki <abial@freebsd.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * $FreeBSD: src/release/picobsd/tinyware/help/help.c,v 1.5 1999/08/28 01:33:54 peter Exp $
28 * $DragonFly: src/release/picobsd/tinyware/help/Attic/help.c,v 1.2 2003/06/17 04:27:20 dillon Exp $
35 #include <sys/ioctl.h>
37 int display(FILE *, const char *);
39 static int cnt, crt=-1;
42 main(int argc, char *argv[])
48 if (!(fd=fopen("/help.a", "r"))) {
49 (void)fputs("Couldn't open help archive.\n", stderr);
53 if (ioctl(fileno(stdout), TIOCGWINSZ, &ts)>=0) {
57 s=display(fd, argc>1 ? argv[1] : "help");
59 else for (i=2;i<argc;) {
61 s|=display(fd, argv[i++]);
77 (void)fputs("\033[7mPress Enter to continue\033[m", stderr);
80 if (fgets(buf, sizeof buf, stdin)) return 0;
81 (void)fputc('\n', stderr);
86 display(FILE *fd, const char *fname)
93 if (!fgets(aname, sizeof aname, fd)) {
96 if (strncmp(aname, ARMAG, SARMAG)) return 1;
97 (void)snprintf(aname, sizeof(aname), "%s/", fname);
99 if (fread((void *)&ar, sizeof ar, 1, fd)!=1) return 1;
100 if (strncmp(ar.ar_fmag, ARFMAG, 2)) return 1;
104 if ((c=(int)(*p++-'0'))<0||c>9) break;
106 } while (p<&ar.ar_size[sizeof ar.ar_size]);
107 if (!strncmp(ar.ar_name, aname, strlen(aname))) break;
108 if (fseek(fd, (long)n, SEEK_CUR)<0) return 1;
109 if ((n&1)&&fgetc(fd)!='\n') return 1;
111 if (cnt>=crt&&more()) return -1;
112 (void)fputc('\n', stdout);
114 o=0; while (o<n&&(c=fgetc(fd))!=EOF) {
117 (void)fputc(c, stdout);
118 if (c!='\n') continue;
119 if (++cnt<crt) continue;
120 if (o>=n||(c=fgetc(fd))==EOF) break;
121 if (more()) return -1;
124 if (cnt>=crt&&more()) return -1;
125 (void)fputc('\n', stdout);
127 if (!strcmp(fname, "help")) {
129 (void)fgets(aname, sizeof aname, fd);
130 if (cnt>=crt&&more()) return -1;
131 (void)fputs("The following help items are available:\n",
135 while (fread((void *)&ar, sizeof ar, 1, fd)==1) {
136 if (strncmp(ar.ar_fmag, ARFMAG, 2)) break;
138 (void)fputc('\n', stdout);
139 if (++cnt>=crt&&more()) return -1;
141 *(index(ar.ar_name,'/'))=' ';
142 (void)printf("%.13s", ar.ar_name);
147 if ((c=(int)(*p++-'0'))<0||c>9) break;
149 } while (p<&ar.ar_size[sizeof ar.ar_size]);
150 if (fseek(fd, (long)n, SEEK_CUR)<0) break;
151 if ((n&1)&&fgetc(fd)!='\n') break;
153 if (cnt>=crt&&more()) return -1;
154 (void)fputc('\n', stdout);