1 /* 2 * Copyright (c) 1980 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 char copyright[] = 36 "@(#) Copyright (c) 1980 The Regents of the University of California.\n\ 37 All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 /*static char sccsid[] = "from: @(#)colcrt.c 5.4 (Berkeley) 6/1/90";*/ 42 static char rcsid[] = "$Id: colcrt.c,v 1.2 1993/08/01 18:17:31 mycroft Exp $"; 43 #endif /* not lint */ 44 45 #include <stdio.h> 46 /* 47 * colcrt - replaces col for crts with new nroff esp. when using tbl. 48 * Bill Joy UCB July 14, 1977 49 * 50 * This filter uses a screen buffer, 267 half-lines by 132 columns. 51 * It interprets the up and down sequences generated by the new 52 * nroff when used with tbl and by \u \d and \r. 53 * General overstriking doesn't work correctly. 54 * Underlining is split onto multiple lines, etc. 55 * 56 * Option - suppresses all underlining. 57 * Option -2 forces printing of all half lines. 58 */ 59 60 char page[267][132]; 61 62 int outline = 1; 63 int outcol; 64 65 char suppresul; 66 char printall; 67 68 char *progname; 69 FILE *f; 70 71 main(argc, argv) 72 int argc; 73 char *argv[]; 74 { 75 register c; 76 register char *cp, *dp; 77 78 argc--; 79 progname = *argv++; 80 while (argc > 0 && argv[0][0] == '-') { 81 switch (argv[0][1]) { 82 case 0: 83 suppresul = 1; 84 break; 85 case '2': 86 printall = 1; 87 break; 88 default: 89 printf("usage: %s [ - ] [ -2 ] [ file ... ]\n", progname); 90 fflush(stdout); 91 exit(1); 92 } 93 argc--; 94 argv++; 95 } 96 do { 97 if (argc > 0) { 98 close(0); 99 if (!(f = fopen(argv[0], "r"))) { 100 fflush(stdout); 101 perror(argv[0]); 102 exit (1); 103 } 104 argc--; 105 argv++; 106 } 107 for (;;) { 108 c = getc(stdin); 109 if (c == -1) { 110 pflush(outline); 111 fflush(stdout); 112 break; 113 } 114 switch (c) { 115 case '\n': 116 if (outline >= 265) 117 pflush(62); 118 outline += 2; 119 outcol = 0; 120 continue; 121 case '\016': 122 case '\017': 123 continue; 124 case 033: 125 c = getc(stdin); 126 switch (c) { 127 case '9': 128 if (outline >= 266) 129 pflush(62); 130 outline++; 131 continue; 132 case '8': 133 if (outline >= 1) 134 outline--; 135 continue; 136 case '7': 137 outline -= 2; 138 if (outline < 0) 139 outline = 0; 140 continue; 141 default: 142 continue; 143 } 144 case '\b': 145 if (outcol) 146 outcol--; 147 continue; 148 case '\t': 149 outcol += 8; 150 outcol &= ~7; 151 outcol--; 152 c = ' '; 153 default: 154 if (outcol >= 132) { 155 outcol++; 156 continue; 157 } 158 cp = &page[outline][outcol]; 159 outcol++; 160 if (c == '_') { 161 if (suppresul) 162 continue; 163 cp += 132; 164 c = '-'; 165 } 166 if (*cp == 0) { 167 *cp = c; 168 dp = cp - outcol; 169 for (cp--; cp >= dp && *cp == 0; cp--) 170 *cp = ' '; 171 } else 172 if (plus(c, *cp) || plus(*cp, c)) 173 *cp = '+'; 174 else if (*cp == ' ' || *cp == 0) 175 *cp = c; 176 continue; 177 } 178 } 179 } while (argc > 0); 180 fflush(stdout); 181 exit(0); 182 } 183 184 plus(c, d) 185 char c, d; 186 { 187 188 return (c == '|' && d == '-' || d == '_'); 189 } 190 191 int first; 192 193 pflush(ol) 194 int ol; 195 { 196 register int i, j; 197 register char *cp; 198 char lastomit; 199 int l; 200 201 l = ol; 202 lastomit = 0; 203 if (l > 266) 204 l = 266; 205 else 206 l |= 1; 207 for (i = first | 1; i < l; i++) { 208 move(i, i - 1); 209 move(i, i + 1); 210 } 211 for (i = first; i < l; i++) { 212 cp = page[i]; 213 if (printall == 0 && lastomit == 0 && *cp == 0) { 214 lastomit = 1; 215 continue; 216 } 217 lastomit = 0; 218 printf("%s\n", cp); 219 } 220 bcopy(page[ol], page, (267 - ol) * 132); 221 bzero(page[267- ol], ol * 132); 222 outline -= ol; 223 outcol = 0; 224 first = 1; 225 } 226 227 move(l, m) 228 int l, m; 229 { 230 register char *cp, *dp; 231 232 for (cp = page[l], dp = page[m]; *cp; cp++, dp++) { 233 switch (*cp) { 234 case '|': 235 if (*dp != ' ' && *dp != '|' && *dp != 0) 236 return; 237 break; 238 case ' ': 239 break; 240 default: 241 return; 242 } 243 } 244 if (*cp == 0) { 245 for (cp = page[l], dp = page[m]; *cp; cp++, dp++) 246 if (*cp == '|') 247 *dp = '|'; 248 else if (*dp == 0) 249 *dp = ' '; 250 page[l][0] = 0; 251 } 252 } 253