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1.8 ! millert 1: /* $OpenBSD: column.c,v 1.7 2002/02/16 21:27:45 millert Exp $ */
1.1 deraadt 2: /* $NetBSD: column.c,v 1.4 1995/09/02 05:53:03 jtc Exp $ */
3:
4: /*
5: * Copyright (c) 1989, 1993, 1994
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.8 ! millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: static char copyright[] =
35: "@(#) Copyright (c) 1989, 1993, 1994\n\
36: The Regents of the University of California. All rights reserved.\n";
37: #endif /* not lint */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)column.c 8.4 (Berkeley) 5/4/95";
42: #endif
1.8 ! millert 43: static char rcsid[] = "$OpenBSD: column.c,v 1.7 2002/02/16 21:27:45 millert Exp $";
1.1 deraadt 44: #endif /* not lint */
45:
46: #include <sys/types.h>
47: #include <sys/ioctl.h>
48:
49: #include <ctype.h>
50: #include <err.h>
51: #include <limits.h>
52: #include <stdio.h>
53: #include <stdlib.h>
54: #include <string.h>
55: #include <unistd.h>
56:
1.7 millert 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);
1.1 deraadt 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: char *separator = "\t "; /* field separator for table option */
72:
73: int
74: main(argc, argv)
75: int argc;
76: char **argv;
77: {
78: struct winsize win;
79: FILE *fp;
80: int ch, tflag, xflag;
81: char *p;
82:
83: if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) {
1.6 deraadt 84: if ((p = getenv("COLUMNS")))
1.1 deraadt 85: termwidth = atoi(p);
86: } else
87: termwidth = win.ws_col;
88:
89: tflag = xflag = 0;
1.3 millert 90: while ((ch = getopt(argc, argv, "c:s:tx")) != -1)
1.1 deraadt 91: switch(ch) {
92: case 'c':
93: termwidth = atoi(optarg);
94: break;
95: case 's':
96: separator = optarg;
97: break;
98: case 't':
99: tflag = 1;
100: break;
101: case 'x':
102: xflag = 1;
103: break;
104: case '?':
105: default:
106: usage();
107: }
108: argc -= optind;
109: argv += optind;
110:
111: if (!*argv)
112: input(stdin);
113: else for (; *argv; ++argv)
1.6 deraadt 114: if ((fp = fopen(*argv, "r"))) {
1.1 deraadt 115: input(fp);
116: (void)fclose(fp);
117: } else {
118: warn("%s", *argv);
119: eval = 1;
120: }
121:
122: if (!entries)
123: exit(eval);
124:
125: if (tflag)
126: maketbl();
127: else if (maxlength >= termwidth)
128: print();
129: else if (xflag)
130: c_columnate();
131: else
132: r_columnate();
133: exit(eval);
134: }
135:
136: #define TAB 8
137: void
138: c_columnate()
139: {
140: int chcnt, col, cnt, endcol, numcols;
141: char **lp;
142:
143: maxlength = (maxlength + TAB) & ~(TAB - 1);
144: numcols = termwidth / maxlength;
145: endcol = maxlength;
146: for (chcnt = col = 0, lp = list;; ++lp) {
147: chcnt += printf("%s", *lp);
148: if (!--entries)
149: break;
150: if (++col == numcols) {
151: chcnt = col = 0;
152: endcol = maxlength;
153: putchar('\n');
154: } else {
1.6 deraadt 155: while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) {
1.1 deraadt 156: (void)putchar('\t');
157: chcnt = cnt;
158: }
159: endcol += maxlength;
160: }
161: }
162: if (chcnt)
163: putchar('\n');
164: }
165:
166: void
167: r_columnate()
168: {
169: int base, chcnt, cnt, col, endcol, numcols, numrows, row;
170:
171: maxlength = (maxlength + TAB) & ~(TAB - 1);
172: numcols = termwidth / maxlength;
1.5 millert 173: if (numcols == 0)
174: numcols = 1;
1.1 deraadt 175: numrows = entries / numcols;
176: if (entries % numcols)
177: ++numrows;
178:
179: for (row = 0; row < numrows; ++row) {
180: endcol = maxlength;
181: for (base = row, chcnt = col = 0; col < numcols; ++col) {
182: chcnt += printf("%s", list[base]);
183: if ((base += numrows) >= entries)
184: break;
1.6 deraadt 185: while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) {
1.1 deraadt 186: (void)putchar('\t');
187: chcnt = cnt;
188: }
189: endcol += maxlength;
190: }
191: putchar('\n');
192: }
193: }
194:
195: void
196: print()
197: {
198: int cnt;
199: char **lp;
200:
201: for (cnt = entries, lp = list; cnt--; ++lp)
202: (void)printf("%s\n", *lp);
203: }
204:
205: typedef struct _tbl {
206: char **list;
207: int cols, *len;
208: } TBL;
209: #define DEFCOLS 25
210:
211: void
212: maketbl()
213: {
214: TBL *t;
215: int coloff, cnt;
216: char *p, **lp;
217: int *lens, maxcols;
218: TBL *tbl;
219: char **cols;
220:
221: t = tbl = emalloc(entries * sizeof(TBL));
222: cols = emalloc((maxcols = DEFCOLS) * sizeof(char *));
223: lens = emalloc(maxcols * sizeof(int));
224: for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) {
1.6 deraadt 225: for (coloff = 0, p = *lp; (cols[coloff] = strtok(p, separator));
1.1 deraadt 226: p = NULL)
227: if (++coloff == maxcols) {
228: if (!(cols = realloc(cols, (u_int)maxcols +
229: DEFCOLS * sizeof(char *))) ||
230: !(lens = realloc(lens,
231: (u_int)maxcols + DEFCOLS * sizeof(int))))
232: err(1, NULL);
233: memset((char *)lens + maxcols * sizeof(int),
234: 0, DEFCOLS * sizeof(int));
235: maxcols += DEFCOLS;
236: }
237: t->list = emalloc(coloff * sizeof(char *));
238: t->len = emalloc(coloff * sizeof(int));
239: for (t->cols = coloff; --coloff >= 0;) {
240: t->list[coloff] = cols[coloff];
241: t->len[coloff] = strlen(cols[coloff]);
242: if (t->len[coloff] > lens[coloff])
243: lens[coloff] = t->len[coloff];
244: }
245: }
246: for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) {
247: for (coloff = 0; coloff < t->cols - 1; ++coloff)
248: (void)printf("%s%*s", t->list[coloff],
249: lens[coloff] - t->len[coloff] + 2, " ");
250: (void)printf("%s\n", t->list[coloff]);
251: }
252: }
253:
254: #define DEFNUM 1000
255: #define MAXLINELEN (LINE_MAX + 1)
256:
257: void
258: input(fp)
259: FILE *fp;
260: {
261: static int maxentry;
262: int len;
263: char *p, buf[MAXLINELEN];
264:
265: if (!list)
266: list = emalloc((maxentry = DEFNUM) * sizeof(char *));
267: while (fgets(buf, MAXLINELEN, fp)) {
268: for (p = buf; *p && isspace(*p); ++p);
269: if (!*p)
270: continue;
271: if (!(p = strchr(p, '\n'))) {
272: warnx("line too long");
273: eval = 1;
274: continue;
275: }
276: *p = '\0';
277: len = p - buf;
278: if (maxlength < len)
279: maxlength = len;
280: if (entries == maxentry) {
281: maxentry += DEFNUM;
282: if (!(list = realloc(list,
283: (u_int)maxentry * sizeof(char *))))
284: err(1, NULL);
285: }
286: list[entries++] = strdup(buf);
287: }
288: }
289:
290: void *
291: emalloc(size)
292: int size;
293: {
294: char *p;
295:
296: if (!(p = malloc(size)))
297: err(1, NULL);
298: memset(p, 0, size);
299: return (p);
300: }
301:
302: void
303: usage()
304: {
305:
306: (void)fprintf(stderr,
1.4 deraadt 307: "usage: column [-tx] [-c columns] [-s sep] [file ...]\n");
1.1 deraadt 308: exit(1);
309: }