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(void); 63 void input(FILE *); 64 void maketbl(void); 65 void print(void); 66 void r_columnate(void); 67 void usage(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(int argc, char **argv) 79 { 80 struct winsize win; 81 FILE *fp; 82 int ch, tflag, xflag; 83 char *p; 84 85 if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) { 86 if ((p = getenv("COLUMNS"))) 87 termwidth = atoi(p); 88 } else 89 termwidth = win.ws_col; 90 91 tflag = xflag = 0; 92 while ((ch = getopt(argc, argv, "c:s:tx")) != -1) 93 switch(ch) { 94 case 'c': 95 termwidth = atoi(optarg); 96 break; 97 case 's': 98 separator = optarg; 99 break; 100 case 't': 101 tflag = 1; 102 break; 103 case 'x': 104 xflag = 1; 105 break; 106 case '?': 107 default: 108 usage(); 109 } 110 argc -= optind; 111 argv += optind; 112 113 if (!*argv) 114 input(stdin); 115 else for (; *argv; ++argv) 116 if ((fp = fopen(*argv, "r"))) { 117 input(fp); 118 (void)fclose(fp); 119 } else { 120 warn("%s", *argv); 121 eval = 1; 122 } 123 124 if (!entries) 125 exit(eval); 126 127 maxlength = (maxlength + TAB) & ~(TAB - 1); 128 if (tflag) 129 maketbl(); 130 else if (maxlength >= termwidth) 131 print(); 132 else if (xflag) 133 c_columnate(); 134 else 135 r_columnate(); 136 exit(eval); 137 } 138 139 void 140 c_columnate(void) 141 { 142 int chcnt, col, cnt, endcol, numcols; 143 char **lp; 144 145 numcols = termwidth / maxlength; 146 endcol = maxlength; 147 for (chcnt = col = 0, lp = list;; ++lp) { 148 chcnt += printf("%s", *lp); 149 if (!--entries) 150 break; 151 if (++col == numcols) { 152 chcnt = col = 0; 153 endcol = maxlength; 154 putchar('\n'); 155 } else { 156 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 157 (void)putchar('\t'); 158 chcnt = cnt; 159 } 160 endcol += maxlength; 161 } 162 } 163 if (chcnt) 164 putchar('\n'); 165 } 166 167 void 168 r_columnate(void) 169 { 170 int base, chcnt, cnt, col, endcol, numcols, numrows, row; 171 172 numcols = termwidth / maxlength; 173 numrows = entries / numcols; 174 if (entries % numcols) 175 ++numrows; 176 177 for (row = 0; row < numrows; ++row) { 178 endcol = maxlength; 179 for (base = row, chcnt = col = 0; col < numcols; ++col) { 180 chcnt += printf("%s", list[base]); 181 if ((base += numrows) >= entries) 182 break; 183 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 184 (void)putchar('\t'); 185 chcnt = cnt; 186 } 187 endcol += maxlength; 188 } 189 putchar('\n'); 190 } 191 } 192 193 void 194 print(void) 195 { 196 int cnt; 197 char **lp; 198 199 for (cnt = entries, lp = list; cnt--; ++lp) 200 (void)printf("%s\n", *lp); 201 } 202 203 typedef struct _tbl { 204 char **list; 205 int cols, *len; 206 } TBL; 207 #define DEFCOLS 25 208 209 void 210 maketbl(void) 211 { 212 TBL *t; 213 int coloff, cnt; 214 char *p, **lp; 215 int *lens, maxcols; 216 TBL *tbl; 217 char **cols; 218 219 if ((t = tbl = calloc(entries, sizeof(TBL))) == NULL) 220 err(1, (char *)NULL); 221 if ((cols = calloc((maxcols = DEFCOLS), sizeof(char *))) == NULL) 222 err(1, (char *)NULL); 223 if ((lens = calloc(maxcols, sizeof(int))) == NULL) 224 err(1, (char *)NULL); 225 for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) { 226 for (coloff = 0, p = *lp; (cols[coloff] = strtok(p, separator)); 227 p = NULL) 228 if (++coloff == maxcols) { 229 if (!(cols = realloc(cols, (u_int)maxcols + 230 DEFCOLS * sizeof(char *))) || 231 !(lens = realloc(lens, 232 (u_int)maxcols + DEFCOLS * sizeof(int)))) 233 err(1, NULL); 234 memset((char *)lens + maxcols * sizeof(int), 235 0, DEFCOLS * sizeof(int)); 236 maxcols += DEFCOLS; 237 } 238 if ((t->list = calloc(coloff, sizeof(char *))) == NULL) 239 err(1, (char *)NULL); 240 if ((t->len = calloc(coloff, sizeof(int))) == NULL) 241 err(1, (char *)NULL); 242 for (t->cols = coloff; --coloff >= 0;) { 243 t->list[coloff] = cols[coloff]; 244 t->len[coloff] = strlen(cols[coloff]); 245 if (t->len[coloff] > lens[coloff]) 246 lens[coloff] = t->len[coloff]; 247 } 248 } 249 for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) { 250 for (coloff = 0; coloff < t->cols - 1; ++coloff) 251 (void)printf("%s%*s", t->list[coloff], 252 lens[coloff] - t->len[coloff] + 2, " "); 253 (void)printf("%s\n", t->list[coloff]); 254 } 255 } 256 257 #define DEFNUM 1000 258 #define MAXLINELEN (LINE_MAX + 1) 259 260 void 261 input(FILE *fp) 262 { 263 static int maxentry; 264 int len; 265 char *p, buf[MAXLINELEN]; 266 267 if (!list) 268 if ((list = calloc((maxentry = DEFNUM), sizeof(char *))) == 269 NULL) 270 err(1, (char *)NULL); 271 while (fgets(buf, MAXLINELEN, fp)) { 272 for (p = buf; *p && isspace(*p); ++p); 273 if (!*p) 274 continue; 275 if (!(p = strchr(p, '\n'))) { 276 warnx("line too long"); 277 eval = 1; 278 continue; 279 } 280 *p = '\0'; 281 len = p - buf; 282 if (maxlength < len) 283 maxlength = len; 284 if (entries == maxentry) { 285 maxentry += DEFNUM; 286 if (!(list = realloc(list, 287 (u_int)maxentry * sizeof(char *)))) 288 err(1, NULL); 289 } 290 list[entries++] = strdup(buf); 291 } 292 } 293 294 void 295 usage(void) 296 { 297 298 (void)fprintf(stderr, 299 "usage: column [-tx] [-c columns] [-s sep] [file ...]\n"); 300 exit(1); 301 } 302