column.c revision 1.12
1 /* $NetBSD: column.c,v 1.12 2005/02/17 17:17:25 xtraeme 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1989, 1993, 1994\n\ 35 The Regents of the University of California. All rights reserved.\n"); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)column.c 8.4 (Berkeley) 5/4/95"; 41 #endif 42 __RCSID("$NetBSD: column.c,v 1.12 2005/02/17 17:17:25 xtraeme Exp $"); 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 #include <sys/ioctl.h> 47 48 #include <ctype.h> 49 #include <err.h> 50 #include <termios.h> 51 #include <limits.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <unistd.h> 56 57 void c_columnate(void); 58 void *emalloc(int); 59 void input(FILE *); 60 void maketbl(void); 61 void print(void); 62 void r_columnate(void); 63 void usage(void); 64 65 int termwidth = 80; /* default terminal width */ 66 67 int entries; /* number of records */ 68 int eval; /* exit value */ 69 int maxlength; /* longest record */ 70 char **list; /* array of pointers to records */ 71 const char *separator = "\t "; /* field separator for table option */ 72 73 int 74 main(int argc, char **argv) 75 { 76 struct winsize win; 77 FILE *fp; 78 int ch, tflag, xflag; 79 const char *p; 80 81 if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) { 82 if ((p = getenv("COLUMNS")) != NULL) 83 termwidth = atoi(p); 84 } else 85 termwidth = win.ws_col; 86 87 tflag = xflag = 0; 88 while ((ch = getopt(argc, argv, "c:s:tx")) != -1) 89 switch(ch) { 90 case 'c': 91 termwidth = atoi(optarg); 92 break; 93 case 's': 94 separator = optarg; 95 break; 96 case 't': 97 tflag = 1; 98 break; 99 case 'x': 100 xflag = 1; 101 break; 102 case '?': 103 default: 104 usage(); 105 } 106 argc -= optind; 107 argv += optind; 108 109 if (!*argv) 110 input(stdin); 111 else for (; *argv; ++argv) 112 if ((fp = fopen(*argv, "r")) != NULL) { 113 input(fp); 114 (void)fclose(fp); 115 } else { 116 warn("%s", *argv); 117 eval = 1; 118 } 119 120 if (!entries) 121 exit(eval); 122 123 if (tflag) 124 maketbl(); 125 else if (maxlength >= termwidth) 126 print(); 127 else if (xflag) 128 c_columnate(); 129 else 130 r_columnate(); 131 exit(eval); 132 } 133 134 #define TAB 8 135 void 136 c_columnate(void) 137 { 138 int chcnt, col, cnt, endcol, numcols; 139 char **lp; 140 141 maxlength = (maxlength + TAB) & ~(TAB - 1); 142 numcols = termwidth / maxlength; 143 endcol = maxlength; 144 for (chcnt = col = 0, lp = list;; ++lp) { 145 chcnt += printf("%s", *lp); 146 if (!--entries) 147 break; 148 if (++col == numcols) { 149 chcnt = col = 0; 150 endcol = maxlength; 151 putchar('\n'); 152 } else { 153 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 154 (void)putchar('\t'); 155 chcnt = cnt; 156 } 157 endcol += maxlength; 158 } 159 } 160 if (chcnt) 161 putchar('\n'); 162 } 163 164 void 165 r_columnate(void) 166 { 167 int base, chcnt, cnt, col, endcol, numcols, numrows, row; 168 169 maxlength = (maxlength + TAB) & ~(TAB - 1); 170 numcols = termwidth / maxlength; 171 numrows = entries / numcols; 172 if (entries % numcols) 173 ++numrows; 174 175 for (row = 0; row < numrows; ++row) { 176 endcol = maxlength; 177 for (base = row, chcnt = col = 0; col < numcols; ++col) { 178 chcnt += printf("%s", list[base]); 179 if ((base += numrows) >= entries) 180 break; 181 while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { 182 (void)putchar('\t'); 183 chcnt = cnt; 184 } 185 endcol += maxlength; 186 } 187 putchar('\n'); 188 } 189 } 190 191 void 192 print(void) 193 { 194 int cnt; 195 char **lp; 196 197 for (cnt = entries, lp = list; cnt--; ++lp) 198 (void)printf("%s\n", *lp); 199 } 200 201 typedef struct _tbl { 202 char **list; 203 int cols, *len; 204 } TBL; 205 #define DEFCOLS 25 206 207 void 208 maketbl(void) 209 { 210 TBL *t; 211 int coloff, cnt; 212 char *p, **lp; 213 int *lens, *nlens, maxcols; 214 TBL *tbl; 215 char **cols, **ncols; 216 217 t = tbl = emalloc(entries * sizeof(TBL)); 218 cols = emalloc((maxcols = DEFCOLS) * sizeof(char *)); 219 lens = emalloc(maxcols * sizeof(int)); 220 for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) { 221 for (coloff = 0, p = *lp; 222 (cols[coloff] = strtok(p, separator)) != NULL; 223 p = NULL) 224 if (++coloff == maxcols) { 225 if (!(ncols = realloc(cols, (u_int)maxcols + 226 DEFCOLS * sizeof(char *))) || 227 !(nlens = realloc(lens, 228 (u_int)maxcols + DEFCOLS * sizeof(int)))) 229 err(1, "realloc"); 230 cols = ncols; 231 lens = nlens; 232 memset((char *)lens + maxcols * sizeof(int), 233 0, DEFCOLS * sizeof(int)); 234 maxcols += DEFCOLS; 235 } 236 t->list = emalloc(coloff * sizeof(char *)); 237 t->len = emalloc(coloff * sizeof(int)); 238 for (t->cols = coloff; --coloff >= 0;) { 239 t->list[coloff] = cols[coloff]; 240 t->len[coloff] = strlen(cols[coloff]); 241 if (t->len[coloff] > lens[coloff]) 242 lens[coloff] = t->len[coloff]; 243 } 244 } 245 for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) { 246 for (coloff = 0; coloff < t->cols - 1; ++coloff) 247 (void)printf("%s%*s", t->list[coloff], 248 lens[coloff] - t->len[coloff] + 2, " "); 249 (void)printf("%s\n", t->list[coloff]); 250 } 251 } 252 253 #define DEFNUM 1000 254 #define MAXLINELEN (LINE_MAX + 1) 255 256 void 257 input(FILE *fp) 258 { 259 static int maxentry; 260 int len; 261 char *p, buf[MAXLINELEN]; 262 char **n; 263 264 if (!list) 265 list = emalloc((maxentry = DEFNUM) * sizeof(char *)); 266 while (fgets(buf, MAXLINELEN, fp)) { 267 for (p = buf; *p && isspace((unsigned char)*p); ++p); 268 if (!*p) 269 continue; 270 if (!(p = strchr(p, '\n'))) { 271 warnx("line too long"); 272 eval = 1; 273 continue; 274 } 275 *p = '\0'; 276 len = p - buf; 277 if (maxlength < len) 278 maxlength = len; 279 if (entries == maxentry) { 280 maxentry += DEFNUM; 281 if (!(n = realloc(list, 282 (u_int)maxentry * sizeof(char *)))) 283 err(1, "realloc"); 284 list = n; 285 } 286 list[entries++] = strdup(buf); 287 } 288 } 289 290 void * 291 emalloc(int size) 292 { 293 char *p; 294 295 if (!(p = malloc(size))) 296 err(1, "malloc"); 297 memset(p, 0, size); 298 return (p); 299 } 300 301 void 302 usage(void) 303 { 304 305 (void)fprintf(stderr, 306 "usage: column [-tx] [-c columns] [-s sep] [file ...]\n"); 307 exit(1); 308 } 309
Indexes created Sun Sep 28 16:09:52 GMT 2025