1 /* 2 * Copyright (c) 1989, 1993, 1994 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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/usr.bin/column/column.c,v 1.4.6.2 2001/08/02 01:34:19 obrien Exp $ 30 * $DragonFly: src/usr.bin/column/column.c,v 1.6 2006/10/08 09:12:32 corecode Exp $ 31 * 32 * @(#) Copyright (c) 1989, 1993, 1994 The Regents of the University of California. All rights reserved. 33 * @(#)column.c 8.4 (Berkeley) 5/4/95 34 */ 35 36 #include <sys/types.h> 37 #include <sys/ioctl.h> 38 39 #include <ctype.h> 40 #include <err.h> 41 #include <limits.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <unistd.h> 46 47 #define TAB 8 48 49 void c_columnate(void); 50 void input(FILE *); 51 void maketbl(void); 52 void print(void); 53 void r_columnate(void); 54 void usage(void); 55 56 int termwidth = 80; /* default terminal width */ 57 58 int entries; /* number of records */ 59 int eval; /* exit value */ 60 int maxlength; /* longest record */ 61 char **list; /* array of pointers to records */ 62 const char *separator = "\t "; /* field separator for table option */ 63 64 int 65 main(int argc, char **argv) 66 { 67 struct winsize win; 68 FILE *fp; 69 int ch, tflag, xflag; 70 char *p; 71 72 if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) { 73 if ((p = getenv("COLUMNS"))) 74 termwidth = atoi(p); 75 } else 76 termwidth = win.ws_col; 77 78 tflag = xflag = 0; 79 while ((ch = getopt(argc, argv, "c:s:tx")) != -1) 80 switch(ch) { 81 case 'c': 82 termwidth = atoi(optarg); 83 break; 84 case 's': 85 separator = optarg; 86 break; 87 case 't': 88 tflag = 1; 89 break; 90 case 'x': 91 xflag = 1; 92 break; 93 case '?': 94 default: 95 usage(); 96 } 97 argc -= optind; 98 argv += optind; 99 100 if (!*argv) 101 input(stdin); 102 else for (; *argv; ++argv) 103 if ((fp = fopen(*argv, "r"))) { 104 input(fp); 105 (void)fclose(fp); 106 } else { 107 warn("%s", *argv); 108 eval = 1; 109 } 110 111 if (!entries) 112 exit(eval); 113 114 maxlength = (maxlength + TAB) & ~(TAB - 1); 115 if (tflag) 116 maketbl(); 117 else if (maxlength >= termwidth) 118 print(); 119 else if (xflag) 120 c_columnate(); 121 else 122 r_columnate(); 123 exit(eval); 124 } 125 126 void 127 c_columnate(void) 128 { 129 int chcnt, col, cnt, endcol, numcols; 130 char **lp; 131 132 numcols = termwidth / maxlength; 133 endcol = maxlength; 134 for (chcnt = col = 0, lp = list;; ++lp) { 135 chcnt += printf("%s", *lp); 136 if (!--entries) 137 break; 138 if (++col == numcols) { 139 chcnt = col = 0; 140 endcol = maxlength; 141 putchar('\n'); 142 } else { 143 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 144 (void)putchar('\t'); 145 chcnt = cnt; 146 } 147 endcol += maxlength; 148 } 149 } 150 if (chcnt) 151 putchar('\n'); 152 } 153 154 void 155 r_columnate(void) 156 { 157 int base, chcnt, cnt, col, endcol, numcols, numrows, row; 158 159 numcols = termwidth / maxlength; 160 numrows = entries / numcols; 161 if (entries % numcols) 162 ++numrows; 163 164 for (row = 0; row < numrows; ++row) { 165 endcol = maxlength; 166 for (base = row, chcnt = col = 0; col < numcols; ++col) { 167 chcnt += printf("%s", list[base]); 168 if ((base += numrows) >= entries) 169 break; 170 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 171 (void)putchar('\t'); 172 chcnt = cnt; 173 } 174 endcol += maxlength; 175 } 176 putchar('\n'); 177 } 178 } 179 180 void 181 print(void) 182 { 183 int cnt; 184 char **lp; 185 186 for (cnt = entries, lp = list; cnt--; ++lp) 187 (void)printf("%s\n", *lp); 188 } 189 190 typedef struct _tbl { 191 char **list; 192 int cols, *len; 193 } TBL; 194 #define DEFCOLS 25 195 196 void 197 maketbl(void) 198 { 199 TBL *t; 200 int coloff, cnt; 201 char *p, **lp; 202 int *lens, maxcols; 203 TBL *tbl; 204 char **cols; 205 206 if ((t = tbl = calloc(entries, sizeof(TBL))) == NULL) 207 err(1, NULL); 208 if ((cols = calloc((maxcols = DEFCOLS), sizeof(char *))) == NULL) 209 err(1, NULL); 210 if ((lens = calloc(maxcols, sizeof(int))) == NULL) 211 err(1, NULL); 212 for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) { 213 for (coloff = 0, p = *lp; (cols[coloff] = strtok(p, separator)); 214 p = NULL) 215 if (++coloff == maxcols) { 216 if (!(cols = realloc(cols, ((u_int)maxcols + 217 DEFCOLS) * sizeof(char *))) || 218 !(lens = realloc(lens, 219 ((u_int)maxcols + DEFCOLS) * sizeof(int)))) 220 err(1, NULL); 221 memset((char *)lens + maxcols * sizeof(int), 222 0, DEFCOLS * sizeof(int)); 223 maxcols += DEFCOLS; 224 } 225 if ((t->list = calloc(coloff, sizeof(char *))) == NULL) 226 err(1, NULL); 227 if ((t->len = calloc(coloff, sizeof(int))) == NULL) 228 err(1, NULL); 229 for (t->cols = coloff; --coloff >= 0;) { 230 t->list[coloff] = cols[coloff]; 231 t->len[coloff] = strlen(cols[coloff]); 232 if (t->len[coloff] > lens[coloff]) 233 lens[coloff] = t->len[coloff]; 234 } 235 } 236 for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) { 237 for (coloff = 0; coloff < t->cols - 1; ++coloff) 238 (void)printf("%s%*s", t->list[coloff], 239 lens[coloff] - t->len[coloff] + 2, " "); 240 (void)printf("%s\n", t->list[coloff]); 241 } 242 } 243 244 #define DEFNUM 1000 245 #define MAXLINELEN (LINE_MAX + 1) 246 247 void 248 input(FILE *fp) 249 { 250 static int maxentry; 251 int len; 252 char *p, buf[MAXLINELEN]; 253 254 if (!list) 255 if ((list = calloc((maxentry = DEFNUM), sizeof(char *))) == 256 NULL) 257 err(1, NULL); 258 while (fgets(buf, MAXLINELEN, fp)) { 259 for (p = buf; *p && isspace(*p); ++p); 260 if (!*p) 261 continue; 262 if (!(p = strchr(p, '\n'))) { 263 warnx("line too long"); 264 eval = 1; 265 continue; 266 } 267 *p = '\0'; 268 len = p - buf; 269 if (maxlength < len) 270 maxlength = len; 271 if (entries == maxentry) { 272 maxentry += DEFNUM; 273 if (!(list = realloc(list, 274 (u_int)maxentry * sizeof(char *)))) 275 err(1, NULL); 276 } 277 list[entries++] = strdup(buf); 278 } 279 } 280 281 void 282 usage(void) 283 { 284 285 (void)fprintf(stderr, 286 "usage: column [-tx] [-c columns] [-s sep] [file ...]\n"); 287 exit(1); 288 } 289