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. 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 35 static const char copyright[] = 36 "@(#) Copyright (c) 1989, 1993, 1994\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif 39 40 #if 0 41 #ifndef lint 42 static char sccsid[] = "@(#)column.c 8.4 (Berkeley) 5/4/95"; 43 #endif 44 #endif 45 46 #include <sys/cdefs.h> 47 __FBSDID("$FreeBSD$"); 48 49 #include <sys/types.h> 50 #include <sys/ioctl.h> 51 52 #include <ctype.h> 53 #include <err.h> 54 #include <limits.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <unistd.h> 59 60 #define TAB 8 61 62 void c_columnate __P((void)); 63 void input __P((FILE *)); 64 void maketbl __P((void)); 65 void print __P((void)); 66 void r_columnate __P((void)); 67 void usage __P((void)); 68 69 int termwidth = 80; /* default terminal width */ 70 71 int entries; /* number of records */ 72 int eval; /* exit value */ 73 int maxlength; /* longest record */ 74 char **list; /* array of pointers to records */ 75 const char *separator = "\t "; /* field separator for table option */ 76 77 int 78 main(argc, argv) 79 int argc; 80 char **argv; 81 { 82 struct winsize win; 83 FILE *fp; 84 int ch, tflag, xflag; 85 char *p; 86 87 if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) { 88 if ((p = getenv("COLUMNS"))) 89 termwidth = atoi(p); 90 } else 91 termwidth = win.ws_col; 92 93 tflag = xflag = 0; 94 while ((ch = getopt(argc, argv, "c:s:tx")) != -1) 95 switch(ch) { 96 case 'c': 97 termwidth = atoi(optarg); 98 break; 99 case 's': 100 separator = optarg; 101 break; 102 case 't': 103 tflag = 1; 104 break; 105 case 'x': 106 xflag = 1; 107 break; 108 case '?': 109 default: 110 usage(); 111 } 112 argc -= optind; 113 argv += optind; 114 115 if (!*argv) 116 input(stdin); 117 else for (; *argv; ++argv) 118 if ((fp = fopen(*argv, "r"))) { 119 input(fp); 120 (void)fclose(fp); 121 } else { 122 warn("%s", *argv); 123 eval = 1; 124 } 125 126 if (!entries) 127 exit(eval); 128 129 maxlength = (maxlength + TAB) & ~(TAB - 1); 130 if (tflag) 131 maketbl(); 132 else if (maxlength >= termwidth) 133 print(); 134 else if (xflag) 135 c_columnate(); 136 else 137 r_columnate(); 138 exit(eval); 139 } 140 141 void 142 c_columnate() 143 { 144 int chcnt, col, cnt, endcol, numcols; 145 char **lp; 146 147 numcols = termwidth / maxlength; 148 endcol = maxlength; 149 for (chcnt = col = 0, lp = list;; ++lp) { 150 chcnt += printf("%s", *lp); 151 if (!--entries) 152 break; 153 if (++col == numcols) { 154 chcnt = col = 0; 155 endcol = maxlength; 156 putchar('\n'); 157 } else { 158 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 159 (void)putchar('\t'); 160 chcnt = cnt; 161 } 162 endcol += maxlength; 163 } 164 } 165 if (chcnt) 166 putchar('\n'); 167 } 168 169 void 170 r_columnate() 171 { 172 int base, chcnt, cnt, col, endcol, numcols, numrows, row; 173 174 numcols = termwidth / maxlength; 175 numrows = entries / numcols; 176 if (entries % numcols) 177 ++numrows; 178 179 for (row = 0; row < numrows; ++row) { 180 endcol = maxlength; 181 for (base = row, chcnt = col = 0; col < numcols; ++col) { 182 chcnt += printf("%s", list[base]); 183 if ((base += numrows) >= entries) 184 break; 185 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 186 (void)putchar('\t'); 187 chcnt = cnt; 188 } 189 endcol += maxlength; 190 } 191 putchar('\n'); 192 } 193 } 194 195 void 196 print() 197 { 198 int cnt; 199 char **lp; 200 201 for (cnt = entries, lp = list; cnt--; ++lp) 202 (void)printf("%s\n", *lp); 203 } 204 205 typedef struct _tbl { 206 char **list; 207 int cols, *len; 208 } TBL; 209 #define DEFCOLS 25 210 211 void 212 maketbl() 213 { 214 TBL *t; 215 int coloff, cnt; 216 char *p, **lp; 217 int *lens, maxcols; 218 TBL *tbl; 219 char **cols; 220 221 if ((t = tbl = calloc(entries, sizeof(TBL))) == NULL) 222 err(1, (char *)NULL); 223 if ((cols = calloc((maxcols = DEFCOLS), sizeof(char *))) == NULL) 224 err(1, (char *)NULL); 225 if ((lens = calloc(maxcols, sizeof(int))) == NULL) 226 err(1, (char *)NULL); 227 for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) { 228 for (coloff = 0, p = *lp; (cols[coloff] = strtok(p, separator)); 229 p = NULL) 230 if (++coloff == maxcols) { 231 if (!(cols = realloc(cols, (u_int)maxcols + 232 DEFCOLS * sizeof(char *))) || 233 !(lens = realloc(lens, 234 (u_int)maxcols + DEFCOLS * sizeof(int)))) 235 err(1, NULL); 236 memset((char *)lens + maxcols * sizeof(int), 237 0, DEFCOLS * sizeof(int)); 238 maxcols += DEFCOLS; 239 } 240 if ((t->list = calloc(coloff, sizeof(char *))) == NULL) 241 err(1, (char *)NULL); 242 if ((t->len = calloc(coloff, sizeof(int))) == NULL) 243 err(1, (char *)NULL); 244 for (t->cols = coloff; --coloff >= 0;) { 245 t->list[coloff] = cols[coloff]; 246 t->len[coloff] = strlen(cols[coloff]); 247 if (t->len[coloff] > lens[coloff]) 248 lens[coloff] = t->len[coloff]; 249 } 250 } 251 for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) { 252 for (coloff = 0; coloff < t->cols - 1; ++coloff) 253 (void)printf("%s%*s", t->list[coloff], 254 lens[coloff] - t->len[coloff] + 2, " "); 255 (void)printf("%s\n", t->list[coloff]); 256 } 257 } 258 259 #define DEFNUM 1000 260 #define MAXLINELEN (LINE_MAX + 1) 261 262 void 263 input(fp) 264 FILE *fp; 265 { 266 static int maxentry; 267 int len; 268 char *p, buf[MAXLINELEN]; 269 270 if (!list) 271 if ((list = calloc((maxentry = DEFNUM), sizeof(char *))) == 272 NULL) 273 err(1, (char *)NULL); 274 while (fgets(buf, MAXLINELEN, fp)) { 275 for (p = buf; *p && isspace(*p); ++p); 276 if (!*p) 277 continue; 278 if (!(p = strchr(p, '\n'))) { 279 warnx("line too long"); 280 eval = 1; 281 continue; 282 } 283 *p = '\0'; 284 len = p - buf; 285 if (maxlength < len) 286 maxlength = len; 287 if (entries == maxentry) { 288 maxentry += DEFNUM; 289 if (!(list = realloc(list, 290 (u_int)maxentry * sizeof(char *)))) 291 err(1, NULL); 292 } 293 list[entries++] = strdup(buf); 294 } 295 } 296 297 void 298 usage() 299 { 300 301 (void)fprintf(stderr, 302 "usage: column [-tx] [-c columns] [-s sep] [file ...]\n"); 303 exit(1); 304 } 305