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 * $FreeBSD: src/usr.bin/column/column.c,v 1.4.6.2 2001/08/02 01:34:19 obrien Exp $ 34 */ 35 36 #ifndef lint 37 static const char copyright[] = 38 "@(#) Copyright (c) 1989, 1993, 1994\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40 #endif /* not lint */ 41 42 #ifndef lint 43 static const char sccsid[] = "@(#)column.c 8.4 (Berkeley) 5/4/95"; 44 #endif /* not lint */ 45 46 #include <sys/types.h> 47 #include <sys/ioctl.h> 48 49 #include <ctype.h> 50 #include <err.h> 51 #include <limits.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <unistd.h> 56 57 #define TAB 8 58 59 void c_columnate __P((void)); 60 void input __P((FILE *)); 61 void maketbl __P((void)); 62 void print __P((void)); 63 void r_columnate __P((void)); 64 void usage __P((void)); 65 66 int termwidth = 80; /* default terminal width */ 67 68 int entries; /* number of records */ 69 int eval; /* exit value */ 70 int maxlength; /* longest record */ 71 char **list; /* array of pointers to records */ 72 char *separator = "\t "; /* field separator for table option */ 73 74 int 75 main(argc, argv) 76 int argc; 77 char **argv; 78 { 79 struct winsize win; 80 FILE *fp; 81 int ch, tflag, xflag; 82 char *p; 83 84 if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) { 85 if ((p = getenv("COLUMNS"))) 86 termwidth = atoi(p); 87 } else 88 termwidth = win.ws_col; 89 90 tflag = xflag = 0; 91 while ((ch = getopt(argc, argv, "c:s:tx")) != -1) 92 switch(ch) { 93 case 'c': 94 termwidth = atoi(optarg); 95 break; 96 case 's': 97 separator = optarg; 98 break; 99 case 't': 100 tflag = 1; 101 break; 102 case 'x': 103 xflag = 1; 104 break; 105 case '?': 106 default: 107 usage(); 108 } 109 argc -= optind; 110 argv += optind; 111 112 if (!*argv) 113 input(stdin); 114 else for (; *argv; ++argv) 115 if ((fp = fopen(*argv, "r"))) { 116 input(fp); 117 (void)fclose(fp); 118 } else { 119 warn("%s", *argv); 120 eval = 1; 121 } 122 123 if (!entries) 124 exit(eval); 125 126 maxlength = (maxlength + TAB) & ~(TAB - 1); 127 if (tflag) 128 maketbl(); 129 else if (maxlength >= termwidth) 130 print(); 131 else if (xflag) 132 c_columnate(); 133 else 134 r_columnate(); 135 exit(eval); 136 } 137 138 void 139 c_columnate() 140 { 141 int chcnt, col, cnt, endcol, numcols; 142 char **lp; 143 144 numcols = termwidth / maxlength; 145 endcol = maxlength; 146 for (chcnt = col = 0, lp = list;; ++lp) { 147 chcnt += printf("%s", *lp); 148 if (!--entries) 149 break; 150 if (++col == numcols) { 151 chcnt = col = 0; 152 endcol = maxlength; 153 putchar('\n'); 154 } else { 155 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 156 (void)putchar('\t'); 157 chcnt = cnt; 158 } 159 endcol += maxlength; 160 } 161 } 162 if (chcnt) 163 putchar('\n'); 164 } 165 166 void 167 r_columnate() 168 { 169 int base, chcnt, cnt, col, endcol, numcols, numrows, row; 170 171 numcols = termwidth / maxlength; 172 numrows = entries / numcols; 173 if (entries % numcols) 174 ++numrows; 175 176 for (row = 0; row < numrows; ++row) { 177 endcol = maxlength; 178 for (base = row, chcnt = col = 0; col < numcols; ++col) { 179 chcnt += printf("%s", list[base]); 180 if ((base += numrows) >= entries) 181 break; 182 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 183 (void)putchar('\t'); 184 chcnt = cnt; 185 } 186 endcol += maxlength; 187 } 188 putchar('\n'); 189 } 190 } 191 192 void 193 print() 194 { 195 int cnt; 196 char **lp; 197 198 for (cnt = entries, lp = list; cnt--; ++lp) 199 (void)printf("%s\n", *lp); 200 } 201 202 typedef struct _tbl { 203 char **list; 204 int cols, *len; 205 } TBL; 206 #define DEFCOLS 25 207 208 void 209 maketbl() 210 { 211 TBL *t; 212 int coloff, cnt; 213 char *p, **lp; 214 int *lens, maxcols; 215 TBL *tbl; 216 char **cols; 217 218 if ((t = tbl = calloc(entries, sizeof(TBL))) == NULL) 219 err(1, (char *)NULL); 220 if ((cols = calloc((maxcols = DEFCOLS), sizeof(char *))) == NULL) 221 err(1, (char *)NULL); 222 if ((lens = calloc(maxcols, sizeof(int))) == NULL) 223 err(1, (char *)NULL); 224 for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) { 225 for (coloff = 0, p = *lp; (cols[coloff] = strtok(p, separator)); 226 p = NULL) 227 if (++coloff == maxcols) { 228 if (!(cols = realloc(cols, (u_int)maxcols + 229 DEFCOLS * sizeof(char *))) || 230 !(lens = realloc(lens, 231 (u_int)maxcols + DEFCOLS * sizeof(int)))) 232 err(1, NULL); 233 memset((char *)lens + maxcols * sizeof(int), 234 0, DEFCOLS * sizeof(int)); 235 maxcols += DEFCOLS; 236 } 237 if ((t->list = calloc(coloff, sizeof(char *))) == NULL) 238 err(1, (char *)NULL); 239 if ((t->len = calloc(coloff, sizeof(int))) == NULL) 240 err(1, (char *)NULL); 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 } 255 256 #define DEFNUM 1000 257 #define MAXLINELEN (LINE_MAX + 1) 258 259 void 260 input(fp) 261 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() 296 { 297 298 (void)fprintf(stderr, 299 "usage: column [-tx] [-c columns] [-s sep] [file ...]\n"); 300 exit(1); 301 } 302