1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef lint 33 static const char copyright[] = 34 "@(#) Copyright (c) 1989, 1993, 1994\n\ 35 The Regents of the University of California. All rights reserved.\n"; 36 #endif 37 38 #if 0 39 #ifndef lint 40 static char sccsid[] = "@(#)column.c 8.4 (Berkeley) 5/4/95"; 41 #endif 42 #endif 43 44 #include <sys/cdefs.h> 45 #include <sys/types.h> 46 #include <sys/ioctl.h> 47 #include <sys/param.h> 48 49 #include <err.h> 50 #include <limits.h> 51 #include <locale.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <unistd.h> 56 #include <wchar.h> 57 #include <wctype.h> 58 59 #define TAB 8 60 61 static void c_columnate(void); 62 static void input(FILE *); 63 static void maketbl(void); 64 static void print(void); 65 static void r_columnate(void); 66 static void usage(void); 67 static int width(const wchar_t *); 68 69 static int termwidth = 80; /* default terminal width */ 70 71 static int entries; /* number of records */ 72 static int eval; /* exit value */ 73 static int maxlength; /* longest record */ 74 static wchar_t **list; /* array of pointers to records */ 75 static const wchar_t *separator = L"\t "; /* field separator for table option */ 76 77 int 78 main(int argc, char **argv) 79 { 80 struct winsize win; 81 FILE *fp; 82 int ch, tflag, xflag; 83 char *p; 84 const char *src; 85 wchar_t *newsep; 86 size_t seplen; 87 88 setlocale(LC_ALL, ""); 89 90 if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) { 91 if ((p = getenv("COLUMNS"))) 92 termwidth = atoi(p); 93 } else 94 termwidth = win.ws_col; 95 96 tflag = xflag = 0; 97 while ((ch = getopt(argc, argv, "c:s:tx")) != -1) 98 switch(ch) { 99 case 'c': 100 termwidth = atoi(optarg); 101 break; 102 case 's': 103 src = optarg; 104 seplen = mbsrtowcs(NULL, &src, 0, NULL); 105 if (seplen == (size_t)-1) 106 err(1, "bad separator"); 107 newsep = malloc((seplen + 1) * sizeof(wchar_t)); 108 if (newsep == NULL) 109 err(1, NULL); 110 mbsrtowcs(newsep, &src, seplen + 1, NULL); 111 separator = newsep; 112 break; 113 case 't': 114 tflag = 1; 115 break; 116 case 'x': 117 xflag = 1; 118 break; 119 case '?': 120 default: 121 usage(); 122 } 123 argc -= optind; 124 argv += optind; 125 126 if (!*argv) 127 input(stdin); 128 else for (; *argv; ++argv) 129 if ((fp = fopen(*argv, "r"))) { 130 input(fp); 131 (void)fclose(fp); 132 } else { 133 warn("%s", *argv); 134 eval = 1; 135 } 136 137 if (!entries) 138 exit(eval); 139 140 maxlength = roundup(maxlength + 1, TAB); 141 if (tflag) 142 maketbl(); 143 else if (maxlength >= termwidth) 144 print(); 145 else if (xflag) 146 c_columnate(); 147 else 148 r_columnate(); 149 exit(eval); 150 } 151 152 static void 153 c_columnate(void) 154 { 155 int chcnt, col, cnt, endcol, numcols; 156 wchar_t **lp; 157 158 numcols = termwidth / maxlength; 159 endcol = maxlength; 160 for (chcnt = col = 0, lp = list;; ++lp) { 161 wprintf(L"%ls", *lp); 162 chcnt += width(*lp); 163 if (!--entries) 164 break; 165 if (++col == numcols) { 166 chcnt = col = 0; 167 endcol = maxlength; 168 putwchar('\n'); 169 } else { 170 while ((cnt = roundup(chcnt + 1, TAB)) <= endcol) { 171 (void)putwchar('\t'); 172 chcnt = cnt; 173 } 174 endcol += maxlength; 175 } 176 } 177 if (chcnt) 178 putwchar('\n'); 179 } 180 181 static void 182 r_columnate(void) 183 { 184 int base, chcnt, cnt, col, endcol, numcols, numrows, row; 185 186 numcols = termwidth / maxlength; 187 numrows = entries / numcols; 188 if (entries % numcols) 189 ++numrows; 190 191 for (row = 0; row < numrows; ++row) { 192 endcol = maxlength; 193 for (base = row, chcnt = col = 0; col < numcols; ++col) { 194 wprintf(L"%ls", list[base]); 195 chcnt += width(list[base]); 196 if ((base += numrows) >= entries) 197 break; 198 while ((cnt = roundup(chcnt + 1, TAB)) <= endcol) { 199 (void)putwchar('\t'); 200 chcnt = cnt; 201 } 202 endcol += maxlength; 203 } 204 putwchar('\n'); 205 } 206 } 207 208 static void 209 print(void) 210 { 211 int cnt; 212 wchar_t **lp; 213 214 for (cnt = entries, lp = list; cnt--; ++lp) 215 (void)wprintf(L"%ls\n", *lp); 216 } 217 218 typedef struct _tbl { 219 wchar_t **list; 220 int cols, *len; 221 } TBL; 222 #define DEFCOLS 25 223 224 static void 225 maketbl(void) 226 { 227 TBL *t; 228 int coloff, cnt; 229 wchar_t *p, **lp; 230 int *lens, maxcols; 231 TBL *tbl; 232 wchar_t **cols; 233 wchar_t *last; 234 235 if ((t = tbl = calloc(entries, sizeof(TBL))) == NULL) 236 err(1, NULL); 237 if ((cols = calloc((maxcols = DEFCOLS), sizeof(*cols))) == NULL) 238 err(1, NULL); 239 if ((lens = calloc(maxcols, sizeof(int))) == NULL) 240 err(1, NULL); 241 for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) { 242 for (coloff = 0, p = *lp; 243 (cols[coloff] = wcstok(p, separator, &last)); 244 p = NULL) 245 if (++coloff == maxcols) { 246 if (!(cols = realloc(cols, ((u_int)maxcols + 247 DEFCOLS) * sizeof(wchar_t *))) || 248 !(lens = realloc(lens, 249 ((u_int)maxcols + DEFCOLS) * sizeof(int)))) 250 err(1, NULL); 251 memset((char *)lens + maxcols * sizeof(int), 252 0, DEFCOLS * sizeof(int)); 253 maxcols += DEFCOLS; 254 } 255 if ((t->list = calloc(coloff, sizeof(*t->list))) == NULL) 256 err(1, NULL); 257 if ((t->len = calloc(coloff, sizeof(int))) == NULL) 258 err(1, NULL); 259 for (t->cols = coloff; --coloff >= 0;) { 260 t->list[coloff] = cols[coloff]; 261 t->len[coloff] = width(cols[coloff]); 262 if (t->len[coloff] > lens[coloff]) 263 lens[coloff] = t->len[coloff]; 264 } 265 } 266 for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) { 267 for (coloff = 0; coloff < t->cols - 1; ++coloff) 268 (void)wprintf(L"%ls%*ls", t->list[coloff], 269 lens[coloff] - t->len[coloff] + 2, L" "); 270 (void)wprintf(L"%ls\n", t->list[coloff]); 271 free(t->list); 272 free(t->len); 273 } 274 free(lens); 275 free(cols); 276 free(tbl); 277 } 278 279 #define DEFNUM 1000 280 #define MAXLINELEN (LINE_MAX + 1) 281 282 static void 283 input(FILE *fp) 284 { 285 static int maxentry; 286 int len; 287 wchar_t *p, buf[MAXLINELEN]; 288 289 if (!list) 290 if ((list = calloc((maxentry = DEFNUM), sizeof(*list))) == 291 NULL) 292 err(1, NULL); 293 while (fgetws(buf, MAXLINELEN, fp)) { 294 for (p = buf; *p && iswspace(*p); ++p); 295 if (!*p) 296 continue; 297 if (!(p = wcschr(p, L'\n'))) { 298 warnx("line too long"); 299 eval = 1; 300 continue; 301 } 302 *p = L'\0'; 303 len = width(buf); 304 if (maxlength < len) 305 maxlength = len; 306 if (entries == maxentry) { 307 maxentry += DEFNUM; 308 if (!(list = realloc(list, 309 (u_int)maxentry * sizeof(*list)))) 310 err(1, NULL); 311 } 312 list[entries] = malloc((wcslen(buf) + 1) * sizeof(wchar_t)); 313 if (list[entries] == NULL) 314 err(1, NULL); 315 wcscpy(list[entries], buf); 316 entries++; 317 } 318 } 319 320 /* Like wcswidth(), but ignores non-printing characters. */ 321 static int 322 width(const wchar_t *wcs) 323 { 324 int w, cw; 325 326 for (w = 0; *wcs != L'\0'; wcs++) 327 if ((cw = wcwidth(*wcs)) > 0) 328 w += cw; 329 return (w); 330 } 331 332 static void 333 usage(void) 334 { 335 336 (void)fprintf(stderr, 337 "usage: column [-tx] [-c columns] [-s sep] [file ...]\n"); 338 exit(1); 339 } 340