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/* $OpenBSD: banner.c,v 1.13 2017/05/27 07:55:44 tedu Exp $ */ |
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/* $NetBSD: banner.c,v 1.2 1995/04/09 06:00:15 cgd Exp $ */ |
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/* |
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* Changes for banner(1) |
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* |
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* @(#)Copyright (c) 1995, Simon J. Gerraty. |
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* |
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* This is free software. It comes with NO WARRANTY. |
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* Permission to use, modify and distribute this source code |
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* is granted subject to the following conditions. |
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* 1/ that the above copyright notice and this notice |
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* are preserved in all copies and that due credit be given |
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* to the author. |
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* 2/ that any changes to this code are clearly commented |
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* as such so that the author does not get blamed for bugs |
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* other than his own. |
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* |
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* Please send copies of changes and bug-fixes to: |
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* sjg@zen.void.oz.au |
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*/ |
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/* |
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* Copyright (c) 1983, 1993 |
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* The Regents of the University of California. 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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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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#include <stdio.h> |
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#include <unistd.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <err.h> |
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#include "banner.h" |
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static long PW = LINELEN; |
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/* the char gen code below is lifted from lpd */ |
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static char * |
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scnline(int key, char *p, int c) |
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{ |
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int scnwidth; |
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/* |
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* <sjg> lpd makes chars out of the letter in question. |
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* the results are somewhat mixed. Sticking to '#' as |
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* banner(1) does is more consistent. |
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*/ |
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c = '#'; |
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for (scnwidth = WIDTH; --scnwidth;) { |
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key <<= 1; |
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*p++ = key & 0200 ? c : BACKGND; |
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} |
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return (p); |
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} |
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#define TRC(q) (((q)-' ')&0177) |
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static int |
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dropit(int c) |
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{ |
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switch(c) { |
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case TRC('_'): |
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case TRC(';'): |
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case TRC(','): |
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case TRC('g'): |
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case TRC('j'): |
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case TRC('p'): |
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case TRC('q'): |
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case TRC('y'): |
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return (DROP); |
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default: |
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return (0); |
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} |
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} |
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static void |
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scan_out(int scfd, char *scsp, int dlm) |
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{ |
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char *strp; |
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int nchrs, j; |
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char outbuf[LINELEN+1], *sp, c, cc; |
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int d, scnhgt; |
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extern char scnkey[][HEIGHT]; /* in lpdchar.c */ |
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for (scnhgt = 0; scnhgt++ < HEIGHT+DROP; ) { |
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strp = &outbuf[0]; |
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sp = scsp; |
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for (nchrs = 0; *sp != dlm && *sp != '\0'; ) { |
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cc = *sp++; |
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if ((unsigned char)cc < ' ' || |
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(unsigned char)cc > 0x7f) |
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cc = INVALID; |
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c = TRC(cc); |
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d = dropit(c); |
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if ((!d && scnhgt > HEIGHT) || (scnhgt <= DROP && d)) |
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for (j = WIDTH; --j;) |
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*strp++ = BACKGND; |
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else |
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strp = scnline(scnkey[(int)c][scnhgt-1-d], strp, cc); |
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if (nchrs++ >= PW/(WIDTH+1)-1) |
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break; |
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*strp++ = BACKGND; |
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} |
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while (*--strp == BACKGND && strp >= outbuf) |
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; |
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strp++; |
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*strp++ = '\n'; |
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(void) write(scfd, outbuf, strp-outbuf); |
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} |
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} |
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/* |
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* for each word, print up to 10 chars in big letters. |
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*/ |
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int |
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main(int argc, char *argv[]) |
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{ |
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char word[10+1]; /* strings limited to 10 chars */ |
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if (pledge("stdio flock rpath cpath wpath", NULL) == -1) |
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err(1, "pledge"); |
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while (*++argv) { |
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(void)strlcpy(word, *argv, sizeof (word)); |
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scan_out(1, word, '\0'); |
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} |
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exit(0); |
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} |