1 /* $NetBSD: column.c,v 1.5 1997/07/01 06:39:38 mikel Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 static 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 #if 0 44 static char sccsid[] = "@(#)column.c 8.4 (Berkeley) 5/4/95"; 45 #endif 46 static char rcsid[] = "$NetBSD: column.c,v 1.5 1997/07/01 06:39:38 mikel Exp $"; 47 #endif /* not lint */ 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 void c_columnate __P((void)); 61 void *emalloc __P((int)); 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 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")) != EOF) 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 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 #define TAB 8 140 void 141 c_columnate() 142 { 143 int chcnt, col, cnt, endcol, numcols; 144 char **lp; 145 146 maxlength = (maxlength + TAB) & ~(TAB - 1); 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 maxlength = (maxlength + TAB) & ~(TAB - 1); 175 numcols = termwidth / maxlength; 176 numrows = entries / numcols; 177 if (entries % numcols) 178 ++numrows; 179 180 for (row = 0; row < numrows; ++row) { 181 endcol = maxlength; 182 for (base = row, chcnt = col = 0; col < numcols; ++col) { 183 chcnt += printf("%s", list[base]); 184 if ((base += numrows) >= entries) 185 break; 186 while ((cnt = (chcnt + TAB & ~(TAB - 1))) <= endcol) { 187 (void)putchar('\t'); 188 chcnt = cnt; 189 } 190 endcol += maxlength; 191 } 192 putchar('\n'); 193 } 194 } 195 196 void 197 print() 198 { 199 int cnt; 200 char **lp; 201 202 for (cnt = entries, lp = list; cnt--; ++lp) 203 (void)printf("%s\n", *lp); 204 } 205 206 typedef struct _tbl { 207 char **list; 208 int cols, *len; 209 } TBL; 210 #define DEFCOLS 25 211 212 void 213 maketbl() 214 { 215 TBL *t; 216 int coloff, cnt; 217 char *p, **lp; 218 int *lens, maxcols; 219 TBL *tbl; 220 char **cols; 221 222 t = tbl = emalloc(entries * sizeof(TBL)); 223 cols = emalloc((maxcols = DEFCOLS) * sizeof(char *)); 224 lens = emalloc(maxcols * sizeof(int)); 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 t->list = emalloc(coloff * sizeof(char *)); 239 t->len = emalloc(coloff * sizeof(int)); 240 for (t->cols = coloff; --coloff >= 0;) { 241 t->list[coloff] = cols[coloff]; 242 t->len[coloff] = strlen(cols[coloff]); 243 if (t->len[coloff] > lens[coloff]) 244 lens[coloff] = t->len[coloff]; 245 } 246 } 247 for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) { 248 for (coloff = 0; coloff < t->cols - 1; ++coloff) 249 (void)printf("%s%*s", t->list[coloff], 250 lens[coloff] - t->len[coloff] + 2, " "); 251 (void)printf("%s\n", t->list[coloff]); 252 } 253 } 254 255 #define DEFNUM 1000 256 #define MAXLINELEN (LINE_MAX + 1) 257 258 void 259 input(fp) 260 FILE *fp; 261 { 262 static int maxentry; 263 int len; 264 char *p, buf[MAXLINELEN]; 265 266 if (!list) 267 list = emalloc((maxentry = DEFNUM) * sizeof(char *)); 268 while (fgets(buf, MAXLINELEN, fp)) { 269 for (p = buf; *p && isspace(*p); ++p); 270 if (!*p) 271 continue; 272 if (!(p = strchr(p, '\n'))) { 273 warnx("line too long"); 274 eval = 1; 275 continue; 276 } 277 *p = '\0'; 278 len = p - buf; 279 if (maxlength < len) 280 maxlength = len; 281 if (entries == maxentry) { 282 maxentry += DEFNUM; 283 if (!(list = realloc(list, 284 (u_int)maxentry * sizeof(char *)))) 285 err(1, NULL); 286 } 287 list[entries++] = strdup(buf); 288 } 289 } 290 291 void * 292 emalloc(size) 293 int size; 294 { 295 char *p; 296 297 if (!(p = malloc(size))) 298 err(1, NULL); 299 memset(p, 0, size); 300 return (p); 301 } 302 303 void 304 usage() 305 { 306 307 (void)fprintf(stderr, 308 "usage: column [-tx] [-c columns] [-s sep] [file ...]\n"); 309 exit(1); 310 } 311