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 #include <sys/types.h>
33 #include <sys/ioctl.h>
34 #include <sys/param.h>
35
36 #include <err.h>
37 #include <limits.h>
38 #include <locale.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <unistd.h>
43 #include <wchar.h>
44 #include <wctype.h>
45
46 #define TAB 8
47
48 static void c_columnate(void);
49 static void input(FILE *);
50 static void maketbl(void);
51 static void print(void);
52 static void r_columnate(void);
53 static void usage(void);
54 static int width(const wchar_t *);
55
56 static int termwidth = 80; /* default terminal width */
57 static int tblcols; /* number of table columns for -t */
58
59 static int entries; /* number of records */
60 static int eval; /* exit value */
61 static int maxlength; /* longest record */
62 static wchar_t **list; /* array of pointers to records */
63 static const wchar_t *separator = L"\t "; /* field separator for table option */
64
65 int
main(int argc,char ** argv)66 main(int argc, char **argv)
67 {
68 struct winsize win;
69 FILE *fp;
70 int ch, tflag, xflag;
71 char *p;
72 const char *errstr, *src;
73 wchar_t *newsep;
74 size_t seplen;
75
76 setlocale(LC_ALL, "");
77
78 if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) {
79 if ((p = getenv("COLUMNS")))
80 termwidth = atoi(p);
81 } else
82 termwidth = win.ws_col;
83
84 tflag = xflag = 0;
85 while ((ch = getopt(argc, argv, "c:l:s:tx")) != -1)
86 switch(ch) {
87 case 'c':
88 termwidth = strtonum(optarg, 0, INT_MAX, &errstr);
89 if (errstr != NULL)
90 errx(1, "invalid terminal width \"%s\": %s",
91 optarg, errstr);
92 break;
93 case 'l':
94 tblcols = strtonum(optarg, 0, INT_MAX, &errstr);
95 if (errstr != NULL)
96 errx(1, "invalid max width \"%s\": %s",
97 optarg, errstr);
98 break;
99 case 's':
100 src = optarg;
101 seplen = mbsrtowcs(NULL, &src, 0, NULL);
102 if (seplen == (size_t)-1)
103 err(1, "bad separator");
104 newsep = calloc(seplen + 1, sizeof(wchar_t));
105 if (newsep == NULL)
106 err(1, NULL);
107 mbsrtowcs(newsep, &src, seplen + 1, NULL);
108 separator = newsep;
109 break;
110 case 't':
111 tflag = 1;
112 break;
113 case 'x':
114 xflag = 1;
115 break;
116 case '?':
117 default:
118 usage();
119 }
120 argc -= optind;
121 argv += optind;
122
123 if (tblcols && !tflag)
124 errx(1, "the -l flag cannot be used without the -t flag");
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 *s;
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 (p = *lp; wcschr(separator, *p); ++p)
243 /* nothing */ ;
244 for (coloff = 0; *p;) {
245 cols[coloff] = p;
246
247 if (++coloff == maxcols) {
248 if (!(cols = realloc(cols, ((u_int)maxcols +
249 DEFCOLS) * sizeof(wchar_t *))) ||
250 !(lens = realloc(lens,
251 ((u_int)maxcols + DEFCOLS) * sizeof(int))))
252 err(1, NULL);
253 memset((char *)lens + maxcols * sizeof(int),
254 0, DEFCOLS * sizeof(int));
255 maxcols += DEFCOLS;
256 }
257
258 if ((!tblcols || coloff < tblcols) &&
259 (s = wcspbrk(p, separator))) {
260 *s++ = L'\0';
261 while (*s && wcschr(separator, *s))
262 ++s;
263 p = s;
264 } else
265 break;
266 }
267 if ((t->list = calloc(coloff, sizeof(*t->list))) == NULL)
268 err(1, NULL);
269 if ((t->len = calloc(coloff, sizeof(int))) == NULL)
270 err(1, NULL);
271 for (t->cols = coloff; --coloff >= 0;) {
272 t->list[coloff] = cols[coloff];
273 t->len[coloff] = width(cols[coloff]);
274 if (t->len[coloff] > lens[coloff])
275 lens[coloff] = t->len[coloff];
276 }
277 }
278 for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) {
279 for (coloff = 0; coloff < t->cols - 1; ++coloff)
280 (void)wprintf(L"%ls%*ls", t->list[coloff],
281 lens[coloff] - t->len[coloff] + 2, L" ");
282 (void)wprintf(L"%ls\n", t->list[coloff]);
283 free(t->list);
284 free(t->len);
285 }
286 free(lens);
287 free(cols);
288 free(tbl);
289 }
290
291 #define DEFNUM 1000
292 #define MAXLINELEN (LINE_MAX + 1)
293
294 static void
input(FILE * fp)295 input(FILE *fp)
296 {
297 static int maxentry;
298 int len;
299 wchar_t *p, buf[MAXLINELEN];
300
301 if (!list)
302 if ((list = calloc((maxentry = DEFNUM), sizeof(*list))) ==
303 NULL)
304 err(1, NULL);
305 while (fgetws(buf, MAXLINELEN, fp)) {
306 for (p = buf; *p && iswspace(*p); ++p);
307 if (!*p)
308 continue;
309 if (!(p = wcschr(p, L'\n'))) {
310 warnx("line too long");
311 eval = 1;
312 continue;
313 }
314 *p = L'\0';
315 len = width(buf);
316 if (maxlength < len)
317 maxlength = len;
318 if (entries == maxentry) {
319 maxentry += DEFNUM;
320 if (!(list = realloc(list,
321 (u_int)maxentry * sizeof(*list))))
322 err(1, NULL);
323 }
324 list[entries] = malloc((wcslen(buf) + 1) * sizeof(wchar_t));
325 if (list[entries] == NULL)
326 err(1, NULL);
327 wcscpy(list[entries], buf);
328 entries++;
329 }
330 }
331
332 /* Like wcswidth(), but ignores non-printing characters. */
333 static int
width(const wchar_t * wcs)334 width(const wchar_t *wcs)
335 {
336 int w, cw;
337
338 for (w = 0; *wcs != L'\0'; wcs++)
339 if ((cw = wcwidth(*wcs)) > 0)
340 w += cw;
341 return (w);
342 }
343
344 static void
usage(void)345 usage(void)
346 {
347 (void)fprintf(stderr,
348 "usage: column [-tx] [-c columns] [-l tblcols]"
349 " [-s sep] [file ...]\n");
350 exit(1);
351 }
352