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Annotation of src/usr.bin/banner/banner.c, Revision 1.1.1.1

1.1       deraadt     1: /*     $NetBSD: banner.c,v 1.2 1995/04/09 06:00:15 cgd 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. All advertising materials mentioning features or use of this software
                     35:  *    must display the following acknowledgement:
                     36:  *     This product includes software developed by the University of
                     37:  *     California, Berkeley and its contributors.
                     38:  * 4. Neither the name of the University nor the names of its contributors
                     39:  *    may be used to endorse or promote products derived from this software
                     40:  *    without specific prior written permission.
                     41:  *
                     42:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     43:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     44:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     45:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     46:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     47:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     48:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     49:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     50:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     51:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     52:  * SUCH DAMAGE.
                     53:  */
                     54: #ifndef lint
                     55: static char copyright[] =
                     56: "@(#) Copyright (c) 1983, 1993\n\
                     57:        The Regents of the University of California.  All rights reserved.\n";
                     58: #endif /* not lint */
                     59:
                     60: #ifndef lint
                     61: #if 0
                     62: static char sccsid[] = "@(#)printjob.c 8.2 (Berkeley) 4/16/94";
                     63: #else
                     64: static char rcsid[] = "$NetBSD: banner.c,v 1.2 1995/04/09 06:00:15 cgd Exp $";
                     65: #endif
                     66: #endif /* not lint */
                     67:
                     68: #include <stdio.h>
                     69:
                     70: #include "banner.h"
                     71:
                     72: static long PW = LINELEN;
                     73:
                     74: /* the char gen code below is lifted from lpd */
                     75:
                     76: static char *
                     77: scnline(key, p, c)
                     78:        register int key;
                     79:        register char *p;
                     80:        int c;
                     81: {
                     82:        register scnwidth;
                     83:
                     84:        /*
                     85:         * <sjg> lpd makes chars out of the letter in question.
                     86:         * the results are somewhat mixed.  Sticking to '#' as
                     87:         * banner(1) does is more consistent.
                     88:         */
                     89: #ifndef NOHASH_ONLY
                     90:        c = '#';
                     91: #endif
                     92:
                     93:        for (scnwidth = WIDTH; --scnwidth;) {
                     94:                key <<= 1;
                     95:                *p++ = key & 0200 ? c : BACKGND;
                     96:        }
                     97:        return (p);
                     98: }
                     99:
                    100: #define TRC(q) (((q)-' ')&0177)
                    101:
                    102:
                    103: static int
                    104: dropit(c)
                    105:        int c;
                    106: {
                    107:        switch(c) {
                    108:
                    109:        case TRC('_'):
                    110:        case TRC(';'):
                    111:        case TRC(','):
                    112:        case TRC('g'):
                    113:        case TRC('j'):
                    114:        case TRC('p'):
                    115:        case TRC('q'):
                    116:        case TRC('y'):
                    117:                return (DROP);
                    118:
                    119:        default:
                    120:                return (0);
                    121:        }
                    122: }
                    123:
                    124: static void
                    125: scan_out(scfd, scsp, dlm)
                    126:        int scfd, dlm;
                    127:        char *scsp;
                    128: {
                    129:        register char *strp;
                    130:        register nchrs, j;
                    131:        char outbuf[LINELEN+1], *sp, c, cc;
                    132:        int d, scnhgt;
                    133:        extern char scnkey[][HEIGHT];   /* in lpdchar.c */
                    134:
                    135:        for (scnhgt = 0; scnhgt++ < HEIGHT+DROP; ) {
                    136:                strp = &outbuf[0];
                    137:                sp = scsp;
                    138:                for (nchrs = 0; ; ) {
                    139:                        d = dropit(c = TRC(cc = *sp++));
                    140:                        if ((!d && scnhgt > HEIGHT) || (scnhgt <= DROP && d))
                    141:                                for (j = WIDTH; --j;)
                    142:                                        *strp++ = BACKGND;
                    143:                        else
                    144:                                strp = scnline(scnkey[c][scnhgt-1-d], strp, cc);
                    145:                        if (*sp == dlm || *sp == '\0' || nchrs++ >= PW/(WIDTH+1)-1)
                    146:                                break;
                    147:                        *strp++ = BACKGND;
                    148: #ifdef LPD_CHSET                               /* <sjg> */
                    149:                        *strp++ = BACKGND;
                    150: #endif
                    151:                }
                    152:                while (*--strp == BACKGND && strp >= outbuf)
                    153:                        ;
                    154:                strp++;
                    155:                *strp++ = '\n';
                    156:                (void) write(scfd, outbuf, strp-outbuf);
                    157:        }
                    158: }
                    159:
                    160: /*
                    161:  * for each word, print up to 10 chars in big letters.
                    162:  */
                    163: int
                    164: main(argc, argv)
                    165:        int argc;
                    166:        char **argv;
                    167: {
                    168:        char word[10+1];                        /* strings limited to 10 chars */
                    169:
                    170:        while (*++argv) {
                    171:                (void)strncpy(word, *argv, sizeof (word) - 1);
                    172:                word[sizeof (word) - 1] = '\0';
                    173:                scan_out(1, word, '\0');
                    174:        }
                    175:        exit(0);
                    176: }