usr.bin/banner/banner.c

   1 /*      $NetBSD: banner.c,v 1.11 2003/08/07 11:13:09 agc Exp $  */
   2
   3 /*
   4  *      Changes for banner(1)
   5  *
   6  *      @(#)Copyright (c) 1995, Simon J. Gerraty.
   7  *
   8  *      This is free software.  It comes with NO WARRANTY.
   9  *      Permission to use, modify and distribute this source code
  10  *      is granted subject to the following conditions.
  11  *      1/ that the above copyright notice and this notice
  12  *      are preserved in all copies and that due credit be given
  13  *      to the author.
  14  *      2/ that any changes to this code are clearly commented
  15  *      as such so that the author does not get blamed for bugs
  16  *      other than his own.
  17  *
  18  *      Please send copies of changes and bug-fixes to:
  19  *      sjg@zen.void.oz.au
  20  */
  21
  22 /*
  23  * Copyright (c) 1983, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. Neither the name of the University nor the names of its contributors
  35  *    may be used to endorse or promote products derived from this software
  36  *    without specific prior written permission.
  37  *
  38  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  39  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  40  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  41  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  42  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  43  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  44  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  45  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  46  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  47  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  48  * SUCH DAMAGE.
  49  */
  50
  51 #include <sys/cdefs.h>
  52 #ifndef lint
  53 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\
  54  The Regents of the University of California.  All rights reserved.");
  55 #endif /* not lint */
  56
  57 #ifndef lint
  58 #if 0
  59 static char sccsid[] = "@(#)printjob.c  8.2 (Berkeley) 4/16/94";
  60 #else
  61 __RCSID("$NetBSD: banner.c,v 1.11 2003/08/07 11:13:09 agc Exp $");
  62 #endif
  63 #endif /* not lint */
  64
  65 #include <stdio.h>
  66 #include <stdlib.h>
  67 #include <string.h>
  68 #include <unistd.h>
  69
  70 #include "banner.h"
  71
  72 static long PW = LINELEN;
  73 /*
  74  * <sjg> lpd makes chars out of the letter in question.
  75  * the results are somewhat mixed.  Sticking to '#' as
  76  * banner(1) does is more consistent.
  77  */
  78 static int ForeGnd = '#';
  79 static int BackGnd = ' ';
  80 static int Drop = 0;                            /* 3 for the LPD font */
  81
  82 static  int     dropit (int);
  83 static  void    scan_out (int, char *, int);
  84 static  char   *scnline (int, char *, int);
  85 static  void    usage(void);
  86
  87 /* the char gen code below is lifted from lpd */
  88
  89 static char *
  90 scnline(int key, char *p, int c)
  91 {
  92         int scnwidth;
  93
  94         if (ForeGnd)
  95             c = ForeGnd;
  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(int c)
 109 {
 110         switch(c) {
 111
 112         case TRC('_'):
 113         case TRC(';'):
 114         case TRC(','):
 115         case TRC('g'):
 116         case TRC('j'):
 117         case TRC('p'):
 118         case TRC('q'):
 119         case TRC('y'):
 120                 return (Drop);
 121
 122         default:
 123                 return (0);
 124         }
 125 }
 126
 127 static void
 128 scan_out(int scfd, char *scsp, int dlm)
 129 {
 130         char *strp;
 131         int nchrs, j;
 132         char outbuf[LINELEN+1], *sp, c, cc;
 133         int d, scnhgt;
 134
 135         for (scnhgt = 0; scnhgt++ < HEIGHT+Drop; ) {
 136                 strp = &outbuf[0];
 137                 if (BackGnd != ' ')
 138                     *strp++ = BackGnd;
 139                 sp = scsp;
 140                 for (nchrs = 0; *sp != dlm && *sp != '\0'; ) {
 141                         cc = *sp++;
 142                         if(cc < ' ' || ((int)cc) >= 0x7f)
 143                                 cc = ' ';
 144                         d = dropit(c = TRC(cc));
 145                         if ((!d && scnhgt > HEIGHT) || (scnhgt <= Drop && d))
 146                                 for (j = WIDTH; --j;)
 147                                         *strp++ = BackGnd;
 148                         else if (Drop == 0)
 149                                 strp = scnline(
 150                                     scnkey_def[(int)c][scnhgt-1-d], strp, cc);
 151                         else
 152                                 strp = scnline(
 153                                     scnkey_lpd[(int)c][scnhgt-1-d], strp, cc);
 154                         if (nchrs++ >= PW/(WIDTH+1)-1)
 155                                 break;
 156                         *strp++ = BackGnd;
 157                 }
 158                 if (BackGnd != ' ')
 159                     *strp++ = BackGnd;
 160                 else {
 161                     while (*--strp == ' ' && strp >= outbuf)
 162                         ;
 163                     strp++;
 164                 }
 165                 *strp++ = '\n';
 166                 (void) write(scfd, outbuf, strp-outbuf);
 167         }
 168 }
 169
 170 /*
 171  * for each word, print up to 10 chars in big letters.
 172  */
 173 int
 174 main(int argc, char **argv)
 175 {
 176         char word[10+1];                /* strings limited to 10 chars */
 177         int c;
 178
 179         while ((c = getopt(argc, argv, "b:f:l")) != -1) {
 180             switch (c) {
 181             case 'f':
 182                 if (*optarg == '-')
 183                     ForeGnd = 0;
 184                 else
 185                     ForeGnd = *optarg;
 186                 break;
 187             case 'b':
 188                 BackGnd = *optarg;
 189                 break;
 190             case 'l':
 191                 Drop = 3;                       /* for LPD font */
 192                 break;
 193             default:
 194                 usage();
 195             }
 196         }
 197
 198         for (; optind < argc; ++optind) {
 199                 (void)strlcpy(word, argv[optind], sizeof (word));
 200                 scan_out(STDOUT_FILENO, word, '\0');
 201         }
 202         exit(0);
 203 }
 204
 205 void
 206 usage(void)
 207 {
 208     fprintf(stderr, "usage: %s [-f fgchar] [-b bgchar] [-l] message...\n",
 209         getprogname());
 210     exit(1);
 211 }