Annotation of src/usr.bin/banner/banner.c, Revision 1.5
1.5 ! mpech 1: /* $OpenBSD: banner.c,v 1.4 2001/06/21 16:35:18 lebel 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
56: static char copyright[] =
57: "@(#) Copyright (c) 1983, 1993\n\
58: The Regents of the University of California. All rights reserved.\n";
59: #endif /* not lint */
60:
61: #ifndef lint
62: #if 0
63: static char sccsid[] = "@(#)printjob.c 8.2 (Berkeley) 4/16/94";
64: #else
1.5 ! mpech 65: static char rcsid[] = "$OpenBSD: banner.c,v 1.4 2001/06/21 16:35:18 lebel Exp $";
1.1 deraadt 66: #endif
67: #endif /* not lint */
68:
69: #include <stdio.h>
1.3 deraadt 70: #include <unistd.h>
71: #include <stdlib.h>
72: #include <string.h>
1.1 deraadt 73:
74: #include "banner.h"
75:
76: static long PW = LINELEN;
77:
78: /* the char gen code below is lifted from lpd */
79:
80: static char *
81: scnline(key, p, c)
1.5 ! mpech 82: int key;
! 83: char *p;
1.1 deraadt 84: int c;
85: {
1.3 deraadt 86: int scnwidth;
1.1 deraadt 87:
88: /*
89: * <sjg> lpd makes chars out of the letter in question.
90: * the results are somewhat mixed. Sticking to '#' as
91: * banner(1) does is more consistent.
92: */
93: #ifndef NOHASH_ONLY
94: c = '#';
95: #endif
96:
97: for (scnwidth = WIDTH; --scnwidth;) {
98: key <<= 1;
99: *p++ = key & 0200 ? c : BACKGND;
100: }
101: return (p);
102: }
103:
104: #define TRC(q) (((q)-' ')&0177)
105:
106:
107: static int
108: dropit(c)
109: int c;
110: {
111: switch(c) {
112:
113: case TRC('_'):
114: case TRC(';'):
115: case TRC(','):
116: case TRC('g'):
117: case TRC('j'):
118: case TRC('p'):
119: case TRC('q'):
120: case TRC('y'):
121: return (DROP);
122:
123: default:
124: return (0);
125: }
126: }
127:
128: static void
129: scan_out(scfd, scsp, dlm)
130: int scfd, dlm;
131: char *scsp;
132: {
1.3 deraadt 133: char *strp;
134: int nchrs, j;
1.1 deraadt 135: char outbuf[LINELEN+1], *sp, c, cc;
136: int d, scnhgt;
137: extern char scnkey[][HEIGHT]; /* in lpdchar.c */
138:
139: for (scnhgt = 0; scnhgt++ < HEIGHT+DROP; ) {
140: strp = &outbuf[0];
141: sp = scsp;
142: for (nchrs = 0; ; ) {
1.3 deraadt 143: c = TRC(cc = *sp++);
144: d = dropit(c);
1.1 deraadt 145: if ((!d && scnhgt > HEIGHT) || (scnhgt <= DROP && d))
146: for (j = WIDTH; --j;)
147: *strp++ = BACKGND;
148: else
1.3 deraadt 149: strp = scnline(scnkey[(int)c][scnhgt-1-d], strp, cc);
1.1 deraadt 150: if (*sp == dlm || *sp == '\0' || nchrs++ >= PW/(WIDTH+1)-1)
151: break;
152: *strp++ = BACKGND;
153: #ifdef LPD_CHSET /* <sjg> */
154: *strp++ = BACKGND;
155: #endif
156: }
157: while (*--strp == BACKGND && strp >= outbuf)
158: ;
159: strp++;
160: *strp++ = '\n';
161: (void) write(scfd, outbuf, strp-outbuf);
162: }
163: }
164:
165: /*
166: * for each word, print up to 10 chars in big letters.
167: */
168: int
169: main(argc, argv)
170: int argc;
171: char **argv;
172: {
173: char word[10+1]; /* strings limited to 10 chars */
174:
175: while (*++argv) {
1.4 lebel 176: (void)strlcpy(word, *argv, sizeof (word));
1.1 deraadt 177: scan_out(1, word, '\0');
178: }
179: exit(0);
180: }
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