1/* 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. 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 35static const char copyright[] = 36"@(#) Copyright (c) 1980, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38#endif 39 40#if 0 41#ifndef lint 42static char sccsid[] = "@(#)colcrt.c 8.1 (Berkeley) 6/6/93"; 43#endif 44#endif 45 46#include <sys/cdefs.h> 47__FBSDID("$FreeBSD: src/usr.bin/colcrt/colcrt.c,v 1.18 2004/07/31 06:22:57 tjr Exp $"); 48 49#include <err.h> 50#include <locale.h> 51#include <stdio.h> 52#include <stdlib.h> 53#include <string.h> 54#include <unistd.h> 55#include <wchar.h> 56 57/* 58 * colcrt - replaces col for crts with new nroff esp. when using tbl. 59 * Bill Joy UCB July 14, 1977 60 * 61 * This filter uses a screen buffer, 267 half-lines by 132 columns. 62 * It interprets the up and down sequences generated by the new 63 * nroff when used with tbl and by \u \d and \r. 64 * General overstriking doesn't work correctly. 65 * Underlining is split onto multiple lines, etc. 66 * 67 * Option - suppresses all underlining. 68 * Option -2 forces printing of all half lines. 69 */ 70 71wchar_t page[267][132]; 72 73int outline = 1; 74int outcol; 75 76char suppresul; 77char printall; 78 79static void move(int, int); 80static void pflush(int); 81static int plus(wchar_t, wchar_t); 82static void usage(void); 83 84int 85main(int argc, char *argv[]) 86{ 87 wint_t c; 88 wchar_t *cp, *dp; 89 int ch, i, w; 90 91 setlocale(LC_ALL, ""); 92 93 while ((ch = getopt(argc, argv, "-2")) != -1) 94 switch (ch) { 95 case '-': 96 suppresul = 1; 97 break; 98 case '2': 99 printall = 1; 100 break; 101 default: 102 usage(); 103 } 104 argc -= optind; 105 argv += optind; 106 107 do { 108 if (argc > 0) { 109 if (freopen(argv[0], "r", stdin) == NULL) { 110 fflush(stdout); 111 err(1, "%s", argv[0]); 112 } 113 argc--; 114 argv++; 115 } 116 for (;;) { 117 c = getwc(stdin); 118 if (c == WEOF) { 119 pflush(outline); 120 fflush(stdout); 121 break; 122 } 123 switch (c) { 124 case '\n': 125 if (outline >= 265) 126 pflush(62); 127 outline += 2; 128 outcol = 0; 129 continue; 130 case '\016': 131 case '\017': 132 continue; 133 case 033: 134 c = getwc(stdin); 135 switch (c) { 136 case '9': 137 if (outline >= 266) 138 pflush(62); 139 outline++; 140 continue; 141 case '8': 142 if (outline >= 1) 143 outline--; 144 continue; 145 case '7': 146 outline -= 2; 147 if (outline < 0) 148 outline = 0; 149 continue; 150 default: 151 continue; 152 } 153 case '\b': 154 if (outcol) 155 outcol--; 156 continue; 157 case '\t': 158 outcol += 8; 159 outcol &= ~7; 160 outcol--; 161 c = ' '; 162 default: 163 if ((w = wcwidth(c)) <= 0) 164 w = 1; /* XXX */ 165 if (outcol + w > 132) { 166 outcol += w; 167 continue; 168 } 169 cp = &page[outline][outcol]; 170 outcol += w; 171 if (c == '_') { 172 if (suppresul) 173 continue; 174 cp += 132; 175 c = '-'; 176 } 177 if (*cp == 0) { 178 for (i = 0; i < w; i++) 179 cp[i] = c; 180 dp = cp - (outcol - w); 181 for (cp--; cp >= dp && *cp == 0; cp--) 182 *cp = ' '; 183 } else { 184 if (plus(c, *cp) || plus(*cp, c)) 185 *cp = '+'; 186 else if (*cp == ' ' || *cp == 0) { 187 for (i = 1; i < w; i++) 188 if (cp[i] != ' ' && 189 cp[i] != 0) 190 goto cont; 191 for (i = 0; i < w; i++) 192 cp[i] = c; 193 } 194 } 195cont: 196 continue; 197 } 198 } 199 if (ferror(stdin)) 200 err(1, NULL); 201 } while (argc > 0); 202 fflush(stdout); 203 exit(0); 204} 205 206static void 207usage(void) 208{ 209 fprintf(stderr, "usage: colcrt [-] [-2] [file ...]\n"); 210 exit(1); 211} 212 213static int 214plus(wchar_t c, wchar_t d) 215{ 216 217 return ((c == '|' && d == '-') || d == '_'); 218} 219 220static void 221pflush(int ol) 222{ 223 static int first; 224 int i; 225 wchar_t *cp; 226 char lastomit; 227 int l, w; 228 229 l = ol; 230 lastomit = 0; 231 if (l > 266) 232 l = 266; 233 else 234 l |= 1; 235 for (i = first | 1; i < l; i++) { 236 move(i, i - 1); 237 move(i, i + 1); 238 } 239 for (i = first; i < l; i++) { 240 cp = page[i]; 241 if (printall == 0 && lastomit == 0 && *cp == 0) { 242 lastomit = 1; 243 continue; 244 } 245 lastomit = 0; 246 while (*cp != L'\0') { 247 if ((w = wcwidth(*cp)) > 0) { 248 putwchar(*cp); 249 cp += w; 250 } else 251 cp++; 252 } 253 putwchar(L'\n'); 254 } 255 wmemcpy(page[0], page[ol], (267 - ol) * 132); 256 wmemset(page[267- ol], L'\0', ol * 132); 257 outline -= ol; 258 outcol = 0; 259 first = 1; 260} 261 262static void 263move(int l, int m) 264{ 265 wchar_t *cp, *dp; 266 267 for (cp = page[l], dp = page[m]; *cp; cp++, dp++) { 268 switch (*cp) { 269 case '|': 270 if (*dp != ' ' && *dp != '|' && *dp != 0) 271 return; 272 break; 273 case ' ': 274 break; 275 default: 276 return; 277 } 278 } 279 if (*cp == 0) { 280 for (cp = page[l], dp = page[m]; *cp; cp++, dp++) 281 if (*cp == '|') 282 *dp = '|'; 283 else if (*dp == 0) 284 *dp = ' '; 285 page[l][0] = 0; 286 } 287} 288