1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
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 #ifndef lint
33 static const char copyright[] =
34 "@(#) Copyright (c) 1989, 1993, 1994\n\
35 The Regents of the University of California. All rights reserved.\n";
36 #endif
37
38 #if 0
39 #ifndef lint
40 static char sccsid[] = "@(#)column.c 8.4 (Berkeley) 5/4/95";
41 #endif
42 #endif
43
44 #include <sys/cdefs.h>
45 #include <sys/types.h>
46 #include <sys/ioctl.h>
47 #include <sys/param.h>
48
49 #include <err.h>
50 #include <limits.h>
51 #include <locale.h>
52 #include <stdio.h>
53 #include <stdlib.h>
54 #include <string.h>
55 #include <unistd.h>
56 #include <wchar.h>
57 #include <wctype.h>
58
59 #define TAB 8
60
61 static void c_columnate(void);
62 static void input(FILE *);
63 static void maketbl(void);
64 static void print(void);
65 static void r_columnate(void);
66 static void usage(void);
67 static int width(const wchar_t *);
68
69 static int termwidth = 80; /* default terminal width */
70
71 static int entries; /* number of records */
72 static int eval; /* exit value */
73 static int maxlength; /* longest record */
74 static wchar_t **list; /* array of pointers to records */
75 static const wchar_t *separator = L"\t "; /* field separator for table option */
76
77 int
main(int argc,char ** argv)78 main(int argc, char **argv)
79 {
80 struct winsize win;
81 FILE *fp;
82 int ch, tflag, xflag;
83 char *p;
84 const char *src;
85 wchar_t *newsep;
86 size_t seplen;
87
88 setlocale(LC_ALL, "");
89
90 if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) {
91 if ((p = getenv("COLUMNS")))
92 termwidth = atoi(p);
93 } else
94 termwidth = win.ws_col;
95
96 tflag = xflag = 0;
97 while ((ch = getopt(argc, argv, "c:s:tx")) != -1)
98 switch(ch) {
99 case 'c':
100 termwidth = atoi(optarg);
101 break;
102 case 's':
103 src = optarg;
104 seplen = mbsrtowcs(NULL, &src, 0, NULL);
105 if (seplen == (size_t)-1)
106 err(1, "bad separator");
107 newsep = malloc((seplen + 1) * sizeof(wchar_t));
108 if (newsep == NULL)
109 err(1, NULL);
110 mbsrtowcs(newsep, &src, seplen + 1, NULL);
111 separator = newsep;
112 break;
113 case 't':
114 tflag = 1;
115 break;
116 case 'x':
117 xflag = 1;
118 break;
119 case '?':
120 default:
121 usage();
122 }
123 argc -= optind;
124 argv += optind;
125
126 if (!*argv)
127 input(stdin);
128 else for (; *argv; ++argv)
129 if ((fp = fopen(*argv, "r"))) {
130 input(fp);
131 (void)fclose(fp);
132 } else {
133 warn("%s", *argv);
134 eval = 1;
135 }
136
137 if (!entries)
138 exit(eval);
139
140 maxlength = roundup(maxlength + 1, TAB);
141 if (tflag)
142 maketbl();
143 else if (maxlength >= termwidth)
144 print();
145 else if (xflag)
146 c_columnate();
147 else
148 r_columnate();
149 exit(eval);
150 }
151
152 static void
c_columnate(void)153 c_columnate(void)
154 {
155 int chcnt, col, cnt, endcol, numcols;
156 wchar_t **lp;
157
158 numcols = termwidth / maxlength;
159 endcol = maxlength;
160 for (chcnt = col = 0, lp = list;; ++lp) {
161 wprintf(L"%ls", *lp);
162 chcnt += width(*lp);
163 if (!--entries)
164 break;
165 if (++col == numcols) {
166 chcnt = col = 0;
167 endcol = maxlength;
168 putwchar('\n');
169 } else {
170 while ((cnt = roundup(chcnt + 1, TAB)) <= endcol) {
171 (void)putwchar('\t');
172 chcnt = cnt;
173 }
174 endcol += maxlength;
175 }
176 }
177 if (chcnt)
178 putwchar('\n');
179 }
180
181 static void
r_columnate(void)182 r_columnate(void)
183 {
184 int base, chcnt, cnt, col, endcol, numcols, numrows, row;
185
186 numcols = termwidth / maxlength;
187 numrows = entries / numcols;
188 if (entries % numcols)
189 ++numrows;
190
191 for (row = 0; row < numrows; ++row) {
192 endcol = maxlength;
193 for (base = row, chcnt = col = 0; col < numcols; ++col) {
194 wprintf(L"%ls", list[base]);
195 chcnt += width(list[base]);
196 if ((base += numrows) >= entries)
197 break;
198 while ((cnt = roundup(chcnt + 1, TAB)) <= endcol) {
199 (void)putwchar('\t');
200 chcnt = cnt;
201 }
202 endcol += maxlength;
203 }
204 putwchar('\n');
205 }
206 }
207
208 static void
print(void)209 print(void)
210 {
211 int cnt;
212 wchar_t **lp;
213
214 for (cnt = entries, lp = list; cnt--; ++lp)
215 (void)wprintf(L"%ls\n", *lp);
216 }
217
218 typedef struct _tbl {
219 wchar_t **list;
220 int cols, *len;
221 } TBL;
222 #define DEFCOLS 25
223
224 static void
maketbl(void)225 maketbl(void)
226 {
227 TBL *t;
228 int coloff, cnt;
229 wchar_t *p, **lp;
230 int *lens, maxcols;
231 TBL *tbl;
232 wchar_t **cols;
233 wchar_t *last;
234
235 if ((t = tbl = calloc(entries, sizeof(TBL))) == NULL)
236 err(1, NULL);
237 if ((cols = calloc((maxcols = DEFCOLS), sizeof(*cols))) == NULL)
238 err(1, NULL);
239 if ((lens = calloc(maxcols, sizeof(int))) == NULL)
240 err(1, NULL);
241 for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) {
242 for (coloff = 0, p = *lp;
243 (cols[coloff] = wcstok(p, separator, &last));
244 p = NULL)
245 if (++coloff == maxcols) {
246 if (!(cols = realloc(cols, ((u_int)maxcols +
247 DEFCOLS) * sizeof(wchar_t *))) ||
248 !(lens = realloc(lens,
249 ((u_int)maxcols + DEFCOLS) * sizeof(int))))
250 err(1, NULL);
251 memset((char *)lens + maxcols * sizeof(int),
252 0, DEFCOLS * sizeof(int));
253 maxcols += DEFCOLS;
254 }
255 if ((t->list = calloc(coloff, sizeof(*t->list))) == NULL)
256 err(1, NULL);
257 if ((t->len = calloc(coloff, sizeof(int))) == NULL)
258 err(1, NULL);
259 for (t->cols = coloff; --coloff >= 0;) {
260 t->list[coloff] = cols[coloff];
261 t->len[coloff] = width(cols[coloff]);
262 if (t->len[coloff] > lens[coloff])
263 lens[coloff] = t->len[coloff];
264 }
265 }
266 for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) {
267 for (coloff = 0; coloff < t->cols - 1; ++coloff)
268 (void)wprintf(L"%ls%*ls", t->list[coloff],
269 lens[coloff] - t->len[coloff] + 2, L" ");
270 (void)wprintf(L"%ls\n", t->list[coloff]);
271 free(t->list);
272 free(t->len);
273 }
274 free(lens);
275 free(cols);
276 free(tbl);
277 }
278
279 #define DEFNUM 1000
280 #define MAXLINELEN (LINE_MAX + 1)
281
282 static void
input(FILE * fp)283 input(FILE *fp)
284 {
285 static int maxentry;
286 int len;
287 wchar_t *p, buf[MAXLINELEN];
288
289 if (!list)
290 if ((list = calloc((maxentry = DEFNUM), sizeof(*list))) ==
291 NULL)
292 err(1, NULL);
293 while (fgetws(buf, MAXLINELEN, fp)) {
294 for (p = buf; *p && iswspace(*p); ++p);
295 if (!*p)
296 continue;
297 if (!(p = wcschr(p, L'\n'))) {
298 warnx("line too long");
299 eval = 1;
300 continue;
301 }
302 *p = L'\0';
303 len = width(buf);
304 if (maxlength < len)
305 maxlength = len;
306 if (entries == maxentry) {
307 maxentry += DEFNUM;
308 if (!(list = realloc(list,
309 (u_int)maxentry * sizeof(*list))))
310 err(1, NULL);
311 }
312 list[entries] = malloc((wcslen(buf) + 1) * sizeof(wchar_t));
313 if (list[entries] == NULL)
314 err(1, NULL);
315 wcscpy(list[entries], buf);
316 entries++;
317 }
318 }
319
320 /* Like wcswidth(), but ignores non-printing characters. */
321 static int
width(const wchar_t * wcs)322 width(const wchar_t *wcs)
323 {
324 int w, cw;
325
326 for (w = 0; *wcs != L'\0'; wcs++)
327 if ((cw = wcwidth(*wcs)) > 0)
328 w += cw;
329 return (w);
330 }
331
332 static void
usage(void)333 usage(void)
334 {
335
336 (void)fprintf(stderr,
337 "usage: column [-tx] [-c columns] [-s sep] [file ...]\n");
338 exit(1);
339 }
340