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 are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #ifndef lint 19 char copyright[] = 20 "@(#) Copyright (c) 1980 The Regents of the University of California.\n\ 21 All rights reserved.\n"; 22 #endif /* not lint */ 23 24 #ifndef lint 25 static char sccsid[] = "@(#)colcrt.c 5.3 (Berkeley) 10/26/88"; 26 #endif /* not lint */ 27 28 #include <stdio.h> 29 /* 30 * colcrt - replaces col for crts with new nroff esp. when using tbl. 31 * Bill Joy UCB July 14, 1977 32 * 33 * This filter uses a screen buffer, 267 half-lines by 132 columns. 34 * It interprets the up and down sequences generated by the new 35 * nroff when used with tbl and by \u \d and \r. 36 * General overstriking doesn't work correctly. 37 * Underlining is split onto multiple lines, etc. 38 * 39 * Option - suppresses all underlining. 40 * Option -2 forces printing of all half lines. 41 */ 42 43 char page[267][132]; 44 45 int outline = 1; 46 int outcol; 47 48 char suppresul; 49 char printall; 50 51 char *progname; 52 FILE *f; 53 54 main(argc, argv) 55 int argc; 56 char *argv[]; 57 { 58 register c; 59 register char *cp, *dp; 60 61 argc--; 62 progname = *argv++; 63 while (argc > 0 && argv[0][0] == '-') { 64 switch (argv[0][1]) { 65 case 0: 66 suppresul = 1; 67 break; 68 case '2': 69 printall = 1; 70 break; 71 default: 72 printf("usage: %s [ - ] [ -2 ] [ file ... ]\n", progname); 73 fflush(stdout); 74 exit(1); 75 } 76 argc--; 77 argv++; 78 } 79 do { 80 if (argc > 0) { 81 close(0); 82 if (!(f = fopen(argv[0], "r"))) { 83 fflush(stdout); 84 perror(argv[0]); 85 exit (1); 86 } 87 argc--; 88 argv++; 89 } 90 for (;;) { 91 c = getc(stdin); 92 if (c == -1) { 93 pflush(outline); 94 fflush(stdout); 95 break; 96 } 97 switch (c) { 98 case '\n': 99 if (outline >= 265) 100 pflush(62); 101 outline += 2; 102 outcol = 0; 103 continue; 104 case '\016': 105 case '\017': 106 continue; 107 case 033: 108 c = getc(stdin); 109 switch (c) { 110 case '9': 111 if (outline >= 266) 112 pflush(62); 113 outline++; 114 continue; 115 case '8': 116 if (outline >= 1) 117 outline--; 118 continue; 119 case '7': 120 outline -= 2; 121 if (outline < 0) 122 outline = 0; 123 continue; 124 default: 125 continue; 126 } 127 case '\b': 128 if (outcol) 129 outcol--; 130 continue; 131 case '\t': 132 outcol += 8; 133 outcol &= ~7; 134 outcol--; 135 c = ' '; 136 default: 137 if (outcol >= 132) { 138 outcol++; 139 continue; 140 } 141 cp = &page[outline][outcol]; 142 outcol++; 143 if (c == '_') { 144 if (suppresul) 145 continue; 146 cp += 132; 147 c = '-'; 148 } 149 if (*cp == 0) { 150 *cp = c; 151 dp = cp - outcol; 152 for (cp--; cp >= dp && *cp == 0; cp--) 153 *cp = ' '; 154 } else 155 if (plus(c, *cp) || plus(*cp, c)) 156 *cp = '+'; 157 else if (*cp == ' ' || *cp == 0) 158 *cp = c; 159 continue; 160 } 161 } 162 } while (argc > 0); 163 fflush(stdout); 164 exit(0); 165 } 166 167 plus(c, d) 168 char c, d; 169 { 170 171 return (c == '|' && d == '-' || d == '_'); 172 } 173 174 int first; 175 176 pflush(ol) 177 int ol; 178 { 179 register int i, j; 180 register char *cp; 181 char lastomit; 182 int l; 183 184 l = ol; 185 lastomit = 0; 186 if (l > 266) 187 l = 266; 188 else 189 l |= 1; 190 for (i = first | 1; i < l; i++) { 191 move(i, i - 1); 192 move(i, i + 1); 193 } 194 for (i = first; i < l; i++) { 195 cp = page[i]; 196 if (printall == 0 && lastomit == 0 && *cp == 0) { 197 lastomit = 1; 198 continue; 199 } 200 lastomit = 0; 201 printf("%s\n", cp); 202 } 203 bcopy(page[ol], page, (267 - ol) * 132); 204 bzero(page[267- ol], ol * 132); 205 outline -= ol; 206 outcol = 0; 207 first = 1; 208 } 209 210 move(l, m) 211 int l, m; 212 { 213 register char *cp, *dp; 214 215 for (cp = page[l], dp = page[m]; *cp; cp++, dp++) { 216 switch (*cp) { 217 case '|': 218 if (*dp != ' ' && *dp != '|' && *dp != 0) 219 return; 220 break; 221 case ' ': 222 break; 223 default: 224 return; 225 } 226 } 227 if (*cp == 0) { 228 for (cp = page[l], dp = page[m]; *cp; cp++, dp++) 229 if (*cp == '|') 230 *dp = '|'; 231 else if (*dp == 0) 232 *dp = ' '; 233 page[l][0] = 0; 234 } 235 } 236