Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
337 lines
7.8 KiB
C
337 lines
7.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1989, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)column.c 8.4 (Berkeley) 5/4/95";
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#endif
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/param.h>
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#include <err.h>
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#include <limits.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <wchar.h>
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#include <wctype.h>
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#define TAB 8
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static void c_columnate(void);
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static void input(FILE *);
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static void maketbl(void);
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static void print(void);
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static void r_columnate(void);
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static void usage(void);
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static int width(const wchar_t *);
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static int termwidth = 80; /* default terminal width */
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static int entries; /* number of records */
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static int eval; /* exit value */
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static int maxlength; /* longest record */
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static wchar_t **list; /* array of pointers to records */
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static const wchar_t *separator = L"\t "; /* field separator for table option */
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int
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main(int argc, char **argv)
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{
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struct winsize win;
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FILE *fp;
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int ch, tflag, xflag;
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char *p;
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const char *src;
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wchar_t *newsep;
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size_t seplen;
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setlocale(LC_ALL, "");
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if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) {
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if ((p = getenv("COLUMNS")))
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termwidth = atoi(p);
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} else
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termwidth = win.ws_col;
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tflag = xflag = 0;
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while ((ch = getopt(argc, argv, "c:s:tx")) != -1)
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switch(ch) {
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case 'c':
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termwidth = atoi(optarg);
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break;
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case 's':
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src = optarg;
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seplen = mbsrtowcs(NULL, &src, 0, NULL);
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if (seplen == (size_t)-1)
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err(1, "bad separator");
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newsep = malloc((seplen + 1) * sizeof(wchar_t));
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if (newsep == NULL)
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err(1, NULL);
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mbsrtowcs(newsep, &src, seplen + 1, NULL);
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separator = newsep;
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break;
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case 't':
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tflag = 1;
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break;
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case 'x':
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xflag = 1;
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (!*argv)
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input(stdin);
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else for (; *argv; ++argv)
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if ((fp = fopen(*argv, "r"))) {
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input(fp);
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(void)fclose(fp);
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} else {
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warn("%s", *argv);
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eval = 1;
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}
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if (!entries)
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exit(eval);
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maxlength = roundup(maxlength + 1, TAB);
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if (tflag)
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maketbl();
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else if (maxlength >= termwidth)
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print();
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else if (xflag)
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c_columnate();
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else
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r_columnate();
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exit(eval);
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}
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static void
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c_columnate(void)
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{
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int chcnt, col, cnt, endcol, numcols;
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wchar_t **lp;
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numcols = termwidth / maxlength;
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endcol = maxlength;
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for (chcnt = col = 0, lp = list;; ++lp) {
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wprintf(L"%ls", *lp);
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chcnt += width(*lp);
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if (!--entries)
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break;
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if (++col == numcols) {
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chcnt = col = 0;
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endcol = maxlength;
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putwchar('\n');
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} else {
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while ((cnt = roundup(chcnt + 1, TAB)) <= endcol) {
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(void)putwchar('\t');
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chcnt = cnt;
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}
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endcol += maxlength;
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}
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}
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if (chcnt)
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putwchar('\n');
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}
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static void
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r_columnate(void)
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{
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int base, chcnt, cnt, col, endcol, numcols, numrows, row;
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numcols = termwidth / maxlength;
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numrows = entries / numcols;
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if (entries % numcols)
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++numrows;
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for (row = 0; row < numrows; ++row) {
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endcol = maxlength;
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for (base = row, chcnt = col = 0; col < numcols; ++col) {
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wprintf(L"%ls", list[base]);
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chcnt += width(list[base]);
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if ((base += numrows) >= entries)
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break;
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while ((cnt = roundup(chcnt + 1, TAB)) <= endcol) {
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(void)putwchar('\t');
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chcnt = cnt;
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}
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endcol += maxlength;
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}
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putwchar('\n');
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}
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}
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static void
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print(void)
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{
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int cnt;
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wchar_t **lp;
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for (cnt = entries, lp = list; cnt--; ++lp)
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(void)wprintf(L"%ls\n", *lp);
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}
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typedef struct _tbl {
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wchar_t **list;
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int cols, *len;
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} TBL;
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#define DEFCOLS 25
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static void
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maketbl(void)
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{
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TBL *t;
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int coloff, cnt;
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wchar_t *p, **lp;
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int *lens, maxcols;
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TBL *tbl;
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wchar_t **cols;
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wchar_t *last;
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if ((t = tbl = calloc(entries, sizeof(TBL))) == NULL)
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err(1, NULL);
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if ((cols = calloc((maxcols = DEFCOLS), sizeof(*cols))) == NULL)
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err(1, NULL);
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if ((lens = calloc(maxcols, sizeof(int))) == NULL)
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err(1, NULL);
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for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) {
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for (coloff = 0, p = *lp;
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(cols[coloff] = wcstok(p, separator, &last));
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p = NULL)
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if (++coloff == maxcols) {
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if (!(cols = realloc(cols, ((u_int)maxcols +
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DEFCOLS) * sizeof(wchar_t *))) ||
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!(lens = realloc(lens,
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((u_int)maxcols + DEFCOLS) * sizeof(int))))
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err(1, NULL);
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memset((char *)lens + maxcols * sizeof(int),
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0, DEFCOLS * sizeof(int));
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maxcols += DEFCOLS;
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}
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if ((t->list = calloc(coloff, sizeof(*t->list))) == NULL)
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err(1, NULL);
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if ((t->len = calloc(coloff, sizeof(int))) == NULL)
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err(1, NULL);
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for (t->cols = coloff; --coloff >= 0;) {
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t->list[coloff] = cols[coloff];
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t->len[coloff] = width(cols[coloff]);
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if (t->len[coloff] > lens[coloff])
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lens[coloff] = t->len[coloff];
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}
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}
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for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) {
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for (coloff = 0; coloff < t->cols - 1; ++coloff)
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(void)wprintf(L"%ls%*ls", t->list[coloff],
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lens[coloff] - t->len[coloff] + 2, L" ");
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(void)wprintf(L"%ls\n", t->list[coloff]);
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}
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}
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#define DEFNUM 1000
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#define MAXLINELEN (LINE_MAX + 1)
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static void
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input(FILE *fp)
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{
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static int maxentry;
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int len;
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wchar_t *p, buf[MAXLINELEN];
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if (!list)
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if ((list = calloc((maxentry = DEFNUM), sizeof(*list))) ==
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NULL)
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err(1, NULL);
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while (fgetws(buf, MAXLINELEN, fp)) {
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for (p = buf; *p && iswspace(*p); ++p);
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if (!*p)
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continue;
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if (!(p = wcschr(p, L'\n'))) {
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warnx("line too long");
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eval = 1;
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continue;
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}
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*p = L'\0';
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len = width(buf);
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if (maxlength < len)
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maxlength = len;
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if (entries == maxentry) {
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maxentry += DEFNUM;
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if (!(list = realloc(list,
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(u_int)maxentry * sizeof(*list))))
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err(1, NULL);
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}
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list[entries] = malloc((wcslen(buf) + 1) * sizeof(wchar_t));
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if (list[entries] == NULL)
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err(1, NULL);
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wcscpy(list[entries], buf);
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entries++;
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}
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}
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/* Like wcswidth(), but ignores non-printing characters. */
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static int
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width(const wchar_t *wcs)
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{
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int w, cw;
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for (w = 0; *wcs != L'\0'; wcs++)
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if ((cw = wcwidth(*wcs)) > 0)
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w += cw;
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return (w);
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr,
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"usage: column [-tx] [-c columns] [-s sep] [file ...]\n");
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exit(1);
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}
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