Annotation of src/usr.bin/banner/banner.c, Revision 1.6
1.6 ! tedu 1: /* $OpenBSD: banner.c,v 1.5 2001/11/19 19:02:13 mpech Exp $ */
1.1 deraadt 2: /* $NetBSD: banner.c,v 1.2 1995/04/09 06:00:15 cgd Exp $ */
3:
4: /*
5: * Changes for banner(1)
6: *
7: * @(#)Copyright (c) 1995, Simon J. Gerraty.
8: *
9: * This is free software. It comes with NO WARRANTY.
10: * Permission to use, modify and distribute this source code
11: * is granted subject to the following conditions.
12: * 1/ that the above copyright notice and this notice
13: * are preserved in all copies and that due credit be given
14: * to the author.
15: * 2/ that any changes to this code are clearly commented
16: * as such so that the author does not get blamed for bugs
17: * other than his own.
18: *
19: * Please send copies of changes and bug-fixes to:
20: * sjg@zen.void.oz.au
21: */
22:
23: /*
24: * Copyright (c) 1983, 1993
25: * The Regents of the University of California. All rights reserved.
26: *
27: * Redistribution and use in source and binary forms, with or without
28: * modification, are permitted provided that the following conditions
29: * are met:
30: * 1. Redistributions of source code must retain the above copyright
31: * notice, this list of conditions and the following disclaimer.
32: * 2. Redistributions in binary form must reproduce the above copyright
33: * notice, this list of conditions and the following disclaimer in the
34: * documentation and/or other materials provided with the distribution.
35: * 3. All advertising materials mentioning features or use of this software
36: * must display the following acknowledgement:
37: * This product includes software developed by the University of
38: * California, Berkeley and its contributors.
39: * 4. Neither the name of the University nor the names of its contributors
40: * may be used to endorse or promote products derived from this software
41: * without specific prior written permission.
42: *
43: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
44: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
47: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53: * SUCH DAMAGE.
54: */
55: #ifndef lint
1.6 ! tedu 56: static const char copyright[] =
1.1 deraadt 57: "@(#) Copyright (c) 1983, 1993\n\
58: The Regents of the University of California. All rights reserved.\n";
59: #if 0
60: static char sccsid[] = "@(#)printjob.c 8.2 (Berkeley) 4/16/94";
61: #else
1.6 ! tedu 62: static const char rcsid[] = "$OpenBSD: banner.c,v 1.5 2001/11/19 19:02:13 mpech Exp $";
1.1 deraadt 63: #endif
64: #endif /* not lint */
65:
66: #include <stdio.h>
1.3 deraadt 67: #include <unistd.h>
68: #include <stdlib.h>
69: #include <string.h>
1.1 deraadt 70:
71: #include "banner.h"
72:
73: static long PW = LINELEN;
74:
75: /* the char gen code below is lifted from lpd */
76:
77: static char *
78: scnline(key, p, c)
1.5 mpech 79: int key;
80: char *p;
1.1 deraadt 81: int c;
82: {
1.3 deraadt 83: int scnwidth;
1.1 deraadt 84:
85: /*
86: * <sjg> lpd makes chars out of the letter in question.
87: * the results are somewhat mixed. Sticking to '#' as
88: * banner(1) does is more consistent.
89: */
90: #ifndef NOHASH_ONLY
91: c = '#';
92: #endif
93:
94: for (scnwidth = WIDTH; --scnwidth;) {
95: key <<= 1;
96: *p++ = key & 0200 ? c : BACKGND;
97: }
98: return (p);
99: }
100:
101: #define TRC(q) (((q)-' ')&0177)
102:
103:
104: static int
105: dropit(c)
106: int c;
107: {
108: switch(c) {
109:
110: case TRC('_'):
111: case TRC(';'):
112: case TRC(','):
113: case TRC('g'):
114: case TRC('j'):
115: case TRC('p'):
116: case TRC('q'):
117: case TRC('y'):
118: return (DROP);
119:
120: default:
121: return (0);
122: }
123: }
124:
125: static void
126: scan_out(scfd, scsp, dlm)
127: int scfd, dlm;
128: char *scsp;
129: {
1.3 deraadt 130: char *strp;
131: int nchrs, j;
1.1 deraadt 132: char outbuf[LINELEN+1], *sp, c, cc;
133: int d, scnhgt;
134: extern char scnkey[][HEIGHT]; /* in lpdchar.c */
135:
136: for (scnhgt = 0; scnhgt++ < HEIGHT+DROP; ) {
137: strp = &outbuf[0];
138: sp = scsp;
1.6 ! tedu 139: for (nchrs = 0; *sp != dlm && *sp != '\0'; ) {
! 140: cc = *sp++;
! 141: if ((unsigned char)cc < ' ' ||
! 142: (unsigned char)cc > 0x7f)
! 143: cc = INVALID;
! 144:
! 145: c = TRC(cc);
1.3 deraadt 146: d = dropit(c);
1.1 deraadt 147: if ((!d && scnhgt > HEIGHT) || (scnhgt <= DROP && d))
148: for (j = WIDTH; --j;)
149: *strp++ = BACKGND;
150: else
1.3 deraadt 151: strp = scnline(scnkey[(int)c][scnhgt-1-d], strp, cc);
1.6 ! tedu 152: if (nchrs++ >= PW/(WIDTH+1)-1)
1.1 deraadt 153: break;
154: *strp++ = BACKGND;
155: #ifdef LPD_CHSET /* <sjg> */
156: *strp++ = BACKGND;
157: #endif
158: }
159: while (*--strp == BACKGND && strp >= outbuf)
160: ;
161: strp++;
162: *strp++ = '\n';
163: (void) write(scfd, outbuf, strp-outbuf);
164: }
165: }
166:
167: /*
168: * for each word, print up to 10 chars in big letters.
169: */
170: int
171: main(argc, argv)
172: int argc;
173: char **argv;
174: {
175: char word[10+1]; /* strings limited to 10 chars */
176:
177: while (*++argv) {
1.4 lebel 178: (void)strlcpy(word, *argv, sizeof (word));
1.1 deraadt 179: scan_out(1, word, '\0');
180: }
181: exit(0);
182: }
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