FreeBSD-5.3/usr.bin/column/column.c
/*
* Copyright (c) 1989, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1989, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#if 0
#ifndef lint
static char sccsid[] = "@(#)column.c 8.4 (Berkeley) 5/4/95";
#endif
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/usr.bin/column/column.c,v 1.13 2004/07/29 13:22:56 tjr Exp $");
#include <sys/types.h>
#include <sys/ioctl.h>
#include <err.h>
#include <limits.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>
#include <wctype.h>
#define TAB 8
void c_columnate(void);
void input(FILE *);
void maketbl(void);
void print(void);
void r_columnate(void);
void usage(void);
int width(const wchar_t *);
int termwidth = 80; /* default terminal width */
int entries; /* number of records */
int eval; /* exit value */
int maxlength; /* longest record */
wchar_t **list; /* array of pointers to records */
const wchar_t *separator = L"\t "; /* field separator for table option */
int
main(int argc, char **argv)
{
struct winsize win;
FILE *fp;
int ch, tflag, xflag;
char *p;
const char *src;
wchar_t *newsep;
size_t seplen;
setlocale(LC_ALL, "");
if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) {
if ((p = getenv("COLUMNS")))
termwidth = atoi(p);
} else
termwidth = win.ws_col;
tflag = xflag = 0;
while ((ch = getopt(argc, argv, "c:s:tx")) != -1)
switch(ch) {
case 'c':
termwidth = atoi(optarg);
break;
case 's':
src = optarg;
seplen = mbsrtowcs(NULL, &src, 0, NULL);
if (seplen == (size_t)-1)
err(1, "bad separator");
newsep = malloc((seplen + 1) * sizeof(wchar_t));
if (newsep == NULL)
err(1, NULL);
mbsrtowcs(newsep, &src, seplen + 1, NULL);
separator = newsep;
break;
case 't':
tflag = 1;
break;
case 'x':
xflag = 1;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (!*argv)
input(stdin);
else for (; *argv; ++argv)
if ((fp = fopen(*argv, "r"))) {
input(fp);
(void)fclose(fp);
} else {
warn("%s", *argv);
eval = 1;
}
if (!entries)
exit(eval);
maxlength = (maxlength + TAB) & ~(TAB - 1);
if (tflag)
maketbl();
else if (maxlength >= termwidth)
print();
else if (xflag)
c_columnate();
else
r_columnate();
exit(eval);
}
void
c_columnate(void)
{
int chcnt, col, cnt, endcol, numcols;
wchar_t **lp;
numcols = termwidth / maxlength;
endcol = maxlength;
for (chcnt = col = 0, lp = list;; ++lp) {
wprintf(L"%ls", *lp);
chcnt += width(*lp);
if (!--entries)
break;
if (++col == numcols) {
chcnt = col = 0;
endcol = maxlength;
putwchar('\n');
} else {
while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) {
(void)putwchar('\t');
chcnt = cnt;
}
endcol += maxlength;
}
}
if (chcnt)
putwchar('\n');
}
void
r_columnate(void)
{
int base, chcnt, cnt, col, endcol, numcols, numrows, row;
numcols = termwidth / maxlength;
numrows = entries / numcols;
if (entries % numcols)
++numrows;
for (row = 0; row < numrows; ++row) {
endcol = maxlength;
for (base = row, chcnt = col = 0; col < numcols; ++col) {
wprintf(L"%ls", list[base]);
chcnt += width(list[base]);
if ((base += numrows) >= entries)
break;
while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) {
(void)putwchar('\t');
chcnt = cnt;
}
endcol += maxlength;
}
putwchar('\n');
}
}
void
print(void)
{
int cnt;
wchar_t **lp;
for (cnt = entries, lp = list; cnt--; ++lp)
(void)wprintf(L"%ls\n", *lp);
}
typedef struct _tbl {
wchar_t **list;
int cols, *len;
} TBL;
#define DEFCOLS 25
void
maketbl(void)
{
TBL *t;
int coloff, cnt;
wchar_t *p, **lp;
int *lens, maxcols;
TBL *tbl;
wchar_t **cols;
wchar_t *last;
if ((t = tbl = calloc(entries, sizeof(TBL))) == NULL)
err(1, (char *)NULL);
if ((cols = calloc((maxcols = DEFCOLS), sizeof(*cols))) == NULL)
err(1, (char *)NULL);
if ((lens = calloc(maxcols, sizeof(int))) == NULL)
err(1, (char *)NULL);
for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) {
for (coloff = 0, p = *lp;
(cols[coloff] = wcstok(p, separator, &last));
p = NULL)
if (++coloff == maxcols) {
if (!(cols = realloc(cols, (u_int)maxcols +
DEFCOLS * sizeof(char *))) ||
!(lens = realloc(lens,
(u_int)maxcols + DEFCOLS * sizeof(int))))
err(1, NULL);
memset((char *)lens + maxcols * sizeof(int),
0, DEFCOLS * sizeof(int));
maxcols += DEFCOLS;
}
if ((t->list = calloc(coloff, sizeof(*t->list))) == NULL)
err(1, (char *)NULL);
if ((t->len = calloc(coloff, sizeof(int))) == NULL)
err(1, (char *)NULL);
for (t->cols = coloff; --coloff >= 0;) {
t->list[coloff] = cols[coloff];
t->len[coloff] = width(cols[coloff]);
if (t->len[coloff] > lens[coloff])
lens[coloff] = t->len[coloff];
}
}
for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) {
for (coloff = 0; coloff < t->cols - 1; ++coloff)
(void)wprintf(L"%ls%*ls", t->list[coloff],
lens[coloff] - t->len[coloff] + 2, L" ");
(void)wprintf(L"%ls\n", t->list[coloff]);
}
}
#define DEFNUM 1000
#define MAXLINELEN (LINE_MAX + 1)
void
input(FILE *fp)
{
static int maxentry;
int len;
wchar_t *p, buf[MAXLINELEN];
if (!list)
if ((list = calloc((maxentry = DEFNUM), sizeof(*list))) ==
NULL)
err(1, (char *)NULL);
while (fgetws(buf, MAXLINELEN, fp)) {
for (p = buf; *p && iswspace(*p); ++p);
if (!*p)
continue;
if (!(p = wcschr(p, L'\n'))) {
warnx("line too long");
eval = 1;
continue;
}
*p = L'\0';
len = width(buf);
if (maxlength < len)
maxlength = len;
if (entries == maxentry) {
maxentry += DEFNUM;
if (!(list = realloc(list,
(u_int)maxentry * sizeof(*list))))
err(1, NULL);
}
list[entries] = malloc((wcslen(buf) + 1) * sizeof(wchar_t));
if (list[entries] == NULL)
err(1, NULL);
wcscpy(list[entries], buf);
entries++;
}
}
/* Like wcswidth(), but ignores non-printing characters. */
int
width(const wchar_t *wcs)
{
int w, cw;
for (w = 0; *wcs != L'\0'; wcs++)
if ((cw = wcwidth(*wcs)) > 0)
w += cw;
return (w);
}
void
usage(void)
{
(void)fprintf(stderr,
"usage: column [-tx] [-c columns] [-s sep] [file ...]\n");
exit(1);
}