1 /* $NetBSD: column.c,v 1.9 1998/11/06 22:59:12 christos 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 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) 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 __RCSID("$NetBSD: column.c,v 1.9 1998/11/06 22:59:12 christos 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 <termios.h> 55 #include <limits.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <string.h> 59 #include <unistd.h> 60 61 void c_columnate __P((void)); 62 void *emalloc __P((int)); 63 void input __P((FILE *)); 64 void maketbl __P((void)); 65 int main __P((int, char **)); 66 void print __P((void)); 67 void r_columnate __P((void)); 68 void usage __P((void)); 69 70 int termwidth = 80; /* default terminal width */ 71 72 int entries; /* number of records */ 73 int eval; /* exit value */ 74 int maxlength; /* longest record */ 75 char **list; /* array of pointers to records */ 76 char *separator = "\t "; /* field separator for table option */ 77 78 int 79 main(argc, argv) 80 int argc; 81 char **argv; 82 { 83 struct winsize win; 84 FILE *fp; 85 int ch, tflag, xflag; 86 const char *p; 87 88 if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) { 89 if ((p = getenv("COLUMNS")) != NULL) 90 termwidth = atoi(p); 91 } else 92 termwidth = win.ws_col; 93 94 tflag = xflag = 0; 95 while ((ch = getopt(argc, argv, "c:s:tx")) != -1) 96 switch(ch) { 97 case 'c': 98 termwidth = atoi(optarg); 99 break; 100 case 's': 101 separator = optarg; 102 break; 103 case 't': 104 tflag = 1; 105 break; 106 case 'x': 107 xflag = 1; 108 break; 109 case '?': 110 default: 111 usage(); 112 } 113 argc -= optind; 114 argv += optind; 115 116 if (!*argv) 117 input(stdin); 118 else for (; *argv; ++argv) 119 if ((fp = fopen(*argv, "r")) != NULL) { 120 input(fp); 121 (void)fclose(fp); 122 } else { 123 warn("%s", *argv); 124 eval = 1; 125 } 126 127 if (!entries) 128 exit(eval); 129 130 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 #define TAB 8 142 void 143 c_columnate() 144 { 145 int chcnt, col, cnt, endcol, numcols; 146 char **lp; 147 148 maxlength = (maxlength + TAB) & ~(TAB - 1); 149 numcols = termwidth / maxlength; 150 endcol = maxlength; 151 for (chcnt = col = 0, lp = list;; ++lp) { 152 chcnt += printf("%s", *lp); 153 if (!--entries) 154 break; 155 if (++col == numcols) { 156 chcnt = col = 0; 157 endcol = maxlength; 158 putchar('\n'); 159 } else { 160 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 161 (void)putchar('\t'); 162 chcnt = cnt; 163 } 164 endcol += maxlength; 165 } 166 } 167 if (chcnt) 168 putchar('\n'); 169 } 170 171 void 172 r_columnate() 173 { 174 int base, chcnt, cnt, col, endcol, numcols, numrows, row; 175 176 maxlength = (maxlength + TAB) & ~(TAB - 1); 177 numcols = termwidth / maxlength; 178 numrows = entries / numcols; 179 if (entries % numcols) 180 ++numrows; 181 182 for (row = 0; row < numrows; ++row) { 183 endcol = maxlength; 184 for (base = row, chcnt = col = 0; col < numcols; ++col) { 185 chcnt += printf("%s", list[base]); 186 if ((base += numrows) >= entries) 187 break; 188 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 189 (void)putchar('\t'); 190 chcnt = cnt; 191 } 192 endcol += maxlength; 193 } 194 putchar('\n'); 195 } 196 } 197 198 void 199 print() 200 { 201 int cnt; 202 char **lp; 203 204 for (cnt = entries, lp = list; cnt--; ++lp) 205 (void)printf("%s\n", *lp); 206 } 207 208 typedef struct _tbl { 209 char **list; 210 int cols, *len; 211 } TBL; 212 #define DEFCOLS 25 213 214 void 215 maketbl() 216 { 217 TBL *t; 218 int coloff, cnt; 219 char *p, **lp; 220 int *lens, maxcols; 221 TBL *tbl; 222 char **cols; 223 224 t = tbl = emalloc(entries * sizeof(TBL)); 225 cols = emalloc((maxcols = DEFCOLS) * sizeof(char *)); 226 lens = emalloc(maxcols * sizeof(int)); 227 for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) { 228 for (coloff = 0, p = *lp; 229 (cols[coloff] = strtok(p, separator)) != NULL; 230 p = NULL) 231 if (++coloff == maxcols) { 232 if (!(cols = realloc(cols, (u_int)maxcols + 233 DEFCOLS * sizeof(char *))) || 234 !(lens = realloc(lens, 235 (u_int)maxcols + DEFCOLS * sizeof(int)))) 236 err(1, "realloc"); 237 memset((char *)lens + maxcols * sizeof(int), 238 0, DEFCOLS * sizeof(int)); 239 maxcols += DEFCOLS; 240 } 241 t->list = emalloc(coloff * sizeof(char *)); 242 t->len = emalloc(coloff * sizeof(int)); 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 list = emalloc((maxentry = DEFNUM) * sizeof(char *)); 271 while (fgets(buf, MAXLINELEN, fp)) { 272 for (p = buf; *p && isspace((unsigned char)*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, "realloc"); 289 } 290 list[entries++] = strdup(buf); 291 } 292 } 293 294 void * 295 emalloc(size) 296 int size; 297 { 298 char *p; 299 300 if (!(p = malloc(size))) 301 err(1, "malloc"); 302 memset(p, 0, size); 303 return (p); 304 } 305 306 void 307 usage() 308 { 309 310 (void)fprintf(stderr, 311 "usage: column [-tx] [-c columns] [-s sep] [file ...]\n"); 312 exit(1); 313 } 314