1 /* $NetBSD: column.c,v 1.22 2020/08/27 01:52:04 simonb Exp $ */ 2 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 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1989, 1993, 1994\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)column.c 8.4 (Berkeley) 5/4/95"; 41 #endif 42 __RCSID("$NetBSD: column.c,v 1.22 2020/08/27 01:52:04 simonb Exp $"); 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 #include <sys/ioctl.h> 47 48 #include <ctype.h> 49 #include <err.h> 50 #include <termios.h> 51 #include <limits.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <unistd.h> 56 #include <util.h> 57 58 #define TAB 8 59 #define TABROUND(l) (((l) + TAB) & ~(TAB - 1)) 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) __dead; 67 68 static int termwidth = 80; /* default terminal width */ 69 70 static int entries; /* number of records */ 71 static int eval; /* exit value */ 72 static int maxlength; /* longest record */ 73 static char **list; /* array of pointers to records */ 74 static const char *separator = "\t "; /* field separator for table option */ 75 76 int 77 main(int argc, char **argv) 78 { 79 struct winsize win; 80 FILE *fp; 81 int ch, tflag, xflag; 82 const char *p; 83 84 setprogname(*argv); 85 86 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) == -1 || !win.ws_col) { 87 if ((p = getenv("COLUMNS")) != NULL) 88 termwidth = atoi(p); 89 } else 90 termwidth = win.ws_col; 91 92 tflag = xflag = 0; 93 while ((ch = getopt(argc, argv, "c:s:tx")) != -1) 94 switch(ch) { 95 case 'c': 96 termwidth = atoi(optarg); 97 break; 98 case 's': 99 separator = optarg; 100 break; 101 case 't': 102 tflag = 1; 103 break; 104 case 'x': 105 xflag = 1; 106 break; 107 case '?': 108 default: 109 usage(); 110 } 111 argc -= optind; 112 argv += optind; 113 114 if (!*argv) 115 input(stdin); 116 else for (; *argv; ++argv) 117 if ((fp = fopen(*argv, "r")) != NULL) { 118 input(fp); 119 (void)fclose(fp); 120 } else { 121 warn("Cannot open `%s'", *argv); 122 eval = 1; 123 } 124 125 if (!entries) 126 return eval; 127 128 maxlength = TABROUND(maxlength); 129 if (tflag) 130 maketbl(); 131 else if (maxlength >= termwidth) 132 print(); 133 else if (xflag) 134 c_columnate(); 135 else 136 r_columnate(); 137 return eval; 138 } 139 140 static void 141 c_columnate(void) 142 { 143 int chcnt, col, cnt, endcol, numcols; 144 char **lp; 145 146 numcols = termwidth / maxlength; 147 endcol = maxlength; 148 for (chcnt = col = 0, lp = list;; ++lp) { 149 chcnt += printf("%s", *lp); 150 if (!--entries) 151 break; 152 if (++col == numcols) { 153 chcnt = col = 0; 154 endcol = maxlength; 155 (void)putchar('\n'); 156 } else { 157 while ((cnt = TABROUND(chcnt)) <= endcol) { 158 (void)putchar('\t'); 159 chcnt = cnt; 160 } 161 endcol += maxlength; 162 } 163 } 164 if (chcnt) 165 (void)putchar('\n'); 166 } 167 168 static void 169 r_columnate(void) 170 { 171 int base, chcnt, cnt, col, endcol, numcols, numrows, row; 172 173 numcols = termwidth / maxlength; 174 numrows = entries / numcols; 175 if (entries % numcols) 176 ++numrows; 177 178 for (row = 0; row < numrows; ++row) { 179 endcol = maxlength; 180 for (base = row, chcnt = col = 0; col < numcols; ++col) { 181 chcnt += printf("%s", list[base]); 182 if ((base += numrows) >= entries) 183 break; 184 while ((cnt = TABROUND(chcnt)) <= endcol) { 185 (void)putchar('\t'); 186 chcnt = cnt; 187 } 188 endcol += maxlength; 189 } 190 (void)putchar('\n'); 191 } 192 } 193 194 static void 195 print(void) 196 { 197 int cnt; 198 char **lp; 199 200 for (cnt = entries, lp = list; cnt--; ++lp) 201 (void)printf("%s\n", *lp); 202 } 203 204 typedef struct _tbl { 205 char **list; 206 int cols, *len; 207 } TBL; 208 #define DEFCOLS 25 209 210 static void 211 maketbl(void) 212 { 213 TBL *t; 214 int coloff, cnt; 215 char *p, **lp; 216 int *lens, *nlens, maxcols; 217 TBL *tbl; 218 char **cols, **ncols; 219 220 t = tbl = ecalloc(entries, sizeof(*t)); 221 cols = ecalloc((maxcols = DEFCOLS), sizeof(*cols)); 222 lens = ecalloc(maxcols, sizeof(*lens)); 223 for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) { 224 for (coloff = 0, p = *lp; 225 (cols[coloff] = strtok(p, separator)) != NULL; p = NULL) 226 if (++coloff == maxcols) { 227 ncols = erealloc(cols, (maxcols + 228 DEFCOLS) * sizeof(*ncols)); 229 nlens = erealloc(lens, (maxcols + 230 DEFCOLS) * sizeof(*nlens)); 231 cols = ncols; 232 lens = nlens; 233 (void)memset(cols + maxcols, 0, 234 DEFCOLS * sizeof(*cols)); 235 (void)memset(lens + maxcols, 0, 236 DEFCOLS * sizeof(*lens)); 237 maxcols += DEFCOLS; 238 } 239 t->list = ecalloc(coloff, sizeof(*(t->list))); 240 t->len = ecalloc(coloff, sizeof(*(t->len))); 241 for (t->cols = coloff; --coloff >= 0;) { 242 t->list[coloff] = cols[coloff]; 243 t->len[coloff] = strlen(cols[coloff]); 244 if (t->len[coloff] > lens[coloff]) 245 lens[coloff] = t->len[coloff]; 246 } 247 } 248 for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) { 249 for (coloff = 0; coloff < t->cols - 1; ++coloff) 250 (void)printf("%s%*s", t->list[coloff], 251 lens[coloff] - t->len[coloff] + 2, " "); 252 (void)printf("%s\n", t->list[coloff]); 253 } 254 free(tbl); 255 free(cols); 256 free(lens); 257 } 258 259 #define DEFNUM 1000 260 261 static void 262 input(FILE *fp) 263 { 264 static int maxentry; 265 int len; 266 size_t blen; 267 char *p, *buf; 268 char **n; 269 270 if (!list) 271 list = ecalloc((maxentry = DEFNUM), sizeof(*list)); 272 while ((buf = fgetln(fp, &blen)) != NULL) { 273 buf = estrndup(buf, blen); 274 for (p = buf; *p && isspace((unsigned char)*p); ++p); 275 if (!*p) { 276 free(buf); 277 continue; 278 } 279 if (!(p = strchr(p, '\n'))) { 280 warnx("line too long"); 281 eval = 1; 282 free(buf); 283 continue; 284 } 285 *p = '\0'; 286 len = p - buf; 287 if (maxlength < len) 288 maxlength = len; 289 if (entries == maxentry) { 290 n = erealloc(list, (maxentry + DEFNUM) * sizeof(*n)); 291 (void)memset(n + maxentry, 0, sizeof(*n) * DEFNUM); 292 maxentry += DEFNUM; 293 list = n; 294 } 295 list[entries++] = buf; 296 } 297 } 298 299 static void 300 usage(void) 301 { 302 303 (void)fprintf(stderr, 304 "Usage: %s [-tx] [-c columns] [-s sep] [file ...]\n", 305 getprogname()); 306 exit(1); 307 } 308
Indexes created Mon Sep 22 13:09:51 GMT 2025