Annotation of src/usr.bin/banner/banner.c, Revision 1.7
1.7 ! millert 1: /* $OpenBSD: banner.c,v 1.6 2003/03/13 23:11:16 tedu 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.
1.7 ! millert 35: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 36: * may be used to endorse or promote products derived from this software
37: * without specific prior written permission.
38: *
39: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
40: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
42: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
43: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
44: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
45: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
47: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
48: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
49: * SUCH DAMAGE.
50: */
51: #ifndef lint
1.6 tedu 52: static const char copyright[] =
1.1 deraadt 53: "@(#) Copyright (c) 1983, 1993\n\
54: The Regents of the University of California. All rights reserved.\n";
55: #if 0
56: static char sccsid[] = "@(#)printjob.c 8.2 (Berkeley) 4/16/94";
57: #else
1.7 ! millert 58: static const char rcsid[] = "$OpenBSD: banner.c,v 1.6 2003/03/13 23:11:16 tedu Exp $";
1.1 deraadt 59: #endif
60: #endif /* not lint */
61:
62: #include <stdio.h>
1.3 deraadt 63: #include <unistd.h>
64: #include <stdlib.h>
65: #include <string.h>
1.1 deraadt 66:
67: #include "banner.h"
68:
69: static long PW = LINELEN;
70:
71: /* the char gen code below is lifted from lpd */
72:
73: static char *
74: scnline(key, p, c)
1.5 mpech 75: int key;
76: char *p;
1.1 deraadt 77: int c;
78: {
1.3 deraadt 79: int scnwidth;
1.1 deraadt 80:
81: /*
82: * <sjg> lpd makes chars out of the letter in question.
83: * the results are somewhat mixed. Sticking to '#' as
84: * banner(1) does is more consistent.
85: */
86: #ifndef NOHASH_ONLY
87: c = '#';
88: #endif
89:
90: for (scnwidth = WIDTH; --scnwidth;) {
91: key <<= 1;
92: *p++ = key & 0200 ? c : BACKGND;
93: }
94: return (p);
95: }
96:
97: #define TRC(q) (((q)-' ')&0177)
98:
99:
100: static int
101: dropit(c)
102: int c;
103: {
104: switch(c) {
105:
106: case TRC('_'):
107: case TRC(';'):
108: case TRC(','):
109: case TRC('g'):
110: case TRC('j'):
111: case TRC('p'):
112: case TRC('q'):
113: case TRC('y'):
114: return (DROP);
115:
116: default:
117: return (0);
118: }
119: }
120:
121: static void
122: scan_out(scfd, scsp, dlm)
123: int scfd, dlm;
124: char *scsp;
125: {
1.3 deraadt 126: char *strp;
127: int nchrs, j;
1.1 deraadt 128: char outbuf[LINELEN+1], *sp, c, cc;
129: int d, scnhgt;
130: extern char scnkey[][HEIGHT]; /* in lpdchar.c */
131:
132: for (scnhgt = 0; scnhgt++ < HEIGHT+DROP; ) {
133: strp = &outbuf[0];
134: sp = scsp;
1.6 tedu 135: for (nchrs = 0; *sp != dlm && *sp != '\0'; ) {
136: cc = *sp++;
137: if ((unsigned char)cc < ' ' ||
138: (unsigned char)cc > 0x7f)
139: cc = INVALID;
140:
141: c = TRC(cc);
1.3 deraadt 142: d = dropit(c);
1.1 deraadt 143: if ((!d && scnhgt > HEIGHT) || (scnhgt <= DROP && d))
144: for (j = WIDTH; --j;)
145: *strp++ = BACKGND;
146: else
1.3 deraadt 147: strp = scnline(scnkey[(int)c][scnhgt-1-d], strp, cc);
1.6 tedu 148: if (nchrs++ >= PW/(WIDTH+1)-1)
1.1 deraadt 149: break;
150: *strp++ = BACKGND;
151: #ifdef LPD_CHSET /* <sjg> */
152: *strp++ = BACKGND;
153: #endif
154: }
155: while (*--strp == BACKGND && strp >= outbuf)
156: ;
157: strp++;
158: *strp++ = '\n';
159: (void) write(scfd, outbuf, strp-outbuf);
160: }
161: }
162:
163: /*
164: * for each word, print up to 10 chars in big letters.
165: */
166: int
167: main(argc, argv)
168: int argc;
169: char **argv;
170: {
171: char word[10+1]; /* strings limited to 10 chars */
172:
173: while (*++argv) {
1.4 lebel 174: (void)strlcpy(word, *argv, sizeof (word));
1.1 deraadt 175: scan_out(1, word, '\0');
176: }
177: exit(0);
178: }
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