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 #include <sys/cdefs.h> 35 36 __FBSDID("$FreeBSD$"); 37 38 #ifndef lint 39 static const char copyright[] = 40 "@(#) Copyright (c) 1989, 1993, 1994\n\ 41 The Regents of the University of California. All rights reserved.\n"; 42 #endif 43 44 #ifndef lint 45 static const char sccsid[] = "@(#)column.c 8.4 (Berkeley) 5/4/95"; 46 #endif 47 48 #include <sys/types.h> 49 #include <sys/ioctl.h> 50 51 #include <ctype.h> 52 #include <err.h> 53 #include <limits.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <unistd.h> 58 59 #define TAB 8 60 61 void c_columnate __P((void)); 62 void input __P((FILE *)); 63 void maketbl __P((void)); 64 void print __P((void)); 65 void r_columnate __P((void)); 66 void usage __P((void)); 67 68 int termwidth = 80; /* default terminal width */ 69 70 int entries; /* number of records */ 71 int eval; /* exit value */ 72 int maxlength; /* longest record */ 73 char **list; /* array of pointers to records */ 74 const char *separator = "\t "; /* field separator for table option */ 75 76 int 77 main(argc, argv) 78 int argc; 79 char **argv; 80 { 81 struct winsize win; 82 FILE *fp; 83 int ch, tflag, xflag; 84 char *p; 85 86 if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) { 87 if ((p = getenv("COLUMNS"))) 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"))) { 118 input(fp); 119 (void)fclose(fp); 120 } else { 121 warn("%s", *argv); 122 eval = 1; 123 } 124 125 if (!entries) 126 exit(eval); 127 128 maxlength = (maxlength + TAB) & ~(TAB - 1); 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 exit(eval); 138 } 139 140 void 141 c_columnate() 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 putchar('\n'); 156 } else { 157 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 158 (void)putchar('\t'); 159 chcnt = cnt; 160 } 161 endcol += maxlength; 162 } 163 } 164 if (chcnt) 165 putchar('\n'); 166 } 167 168 void 169 r_columnate() 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 = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 185 (void)putchar('\t'); 186 chcnt = cnt; 187 } 188 endcol += maxlength; 189 } 190 putchar('\n'); 191 } 192 } 193 194 void 195 print() 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 void 211 maketbl() 212 { 213 TBL *t; 214 int coloff, cnt; 215 char *p, **lp; 216 int *lens, maxcols; 217 TBL *tbl; 218 char **cols; 219 220 if ((t = tbl = calloc(entries, sizeof(TBL))) == NULL) 221 err(1, (char *)NULL); 222 if ((cols = calloc((maxcols = DEFCOLS), sizeof(char *))) == NULL) 223 err(1, (char *)NULL); 224 if ((lens = calloc(maxcols, sizeof(int))) == NULL) 225 err(1, (char *)NULL); 226 for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) { 227 for (coloff = 0, p = *lp; (cols[coloff] = strtok(p, separator)); 228 p = NULL) 229 if (++coloff == maxcols) { 230 if (!(cols = realloc(cols, (u_int)maxcols + 231 DEFCOLS * sizeof(char *))) || 232 !(lens = realloc(lens, 233 (u_int)maxcols + DEFCOLS * sizeof(int)))) 234 err(1, NULL); 235 memset((char *)lens + maxcols * sizeof(int), 236 0, DEFCOLS * sizeof(int)); 237 maxcols += DEFCOLS; 238 } 239 if ((t->list = calloc(coloff, sizeof(char *))) == NULL) 240 err(1, (char *)NULL); 241 if ((t->len = calloc(coloff, sizeof(int))) == NULL) 242 err(1, (char *)NULL); 243 for (t->cols = coloff; --coloff >= 0;) { 244 t->list[coloff] = cols[coloff]; 245 t->len[coloff] = strlen(cols[coloff]); 246 if (t->len[coloff] > lens[coloff]) 247 lens[coloff] = t->len[coloff]; 248 } 249 } 250 for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) { 251 for (coloff = 0; coloff < t->cols - 1; ++coloff) 252 (void)printf("%s%*s", t->list[coloff], 253 lens[coloff] - t->len[coloff] + 2, " "); 254 (void)printf("%s\n", t->list[coloff]); 255 } 256 } 257 258 #define DEFNUM 1000 259 #define MAXLINELEN (LINE_MAX + 1) 260 261 void 262 input(fp) 263 FILE *fp; 264 { 265 static int maxentry; 266 int len; 267 char *p, buf[MAXLINELEN]; 268 269 if (!list) 270 if ((list = calloc((maxentry = DEFNUM), sizeof(char *))) == 271 NULL) 272 err(1, (char *)NULL); 273 while (fgets(buf, MAXLINELEN, fp)) { 274 for (p = buf; *p && isspace(*p); ++p); 275 if (!*p) 276 continue; 277 if (!(p = strchr(p, '\n'))) { 278 warnx("line too long"); 279 eval = 1; 280 continue; 281 } 282 *p = '\0'; 283 len = p - buf; 284 if (maxlength < len) 285 maxlength = len; 286 if (entries == maxentry) { 287 maxentry += DEFNUM; 288 if (!(list = realloc(list, 289 (u_int)maxentry * sizeof(char *)))) 290 err(1, NULL); 291 } 292 list[entries++] = strdup(buf); 293 } 294 } 295 296 void 297 usage() 298 { 299 300 (void)fprintf(stderr, 301 "usage: column [-tx] [-c columns] [-s sep] [file ...]\n"); 302 exit(1); 303 } 304