mirror of git://git.suckless.org/sbase
Remove col(1)
Where should I start? It's a rather irrelevant tool and broken as is. We'll re-add it as soon as the code has been fixed by the original author. Until then, better keep it out or some kids get hurt.
This commit is contained in:
FRIGN
sin
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1
README
1
README
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@ -22,7 +22,6 @@ The following tools are implemented:
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=*|o cksum .
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=*|o cmp .
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#*|x cols .
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#*|x col .
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=*|o comm .
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=*|o cp (-i)
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=*|x cron .
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70
col.1
70
col.1
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@ -1,70 +0,0 @@
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.Dd March 22, 2014
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.Dt COL 1
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.Os sbase
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.Sh NAME
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.Nm col
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.Nd filter reverse line-feeds
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.Sh SYPNOSIS
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.Nm
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.Op Fl bfpx
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.Op Fl l Ar num
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.Sh DESCRIPTION
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.Nm
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filters all reverse (and half reverse) line feeds,
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as produced by
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.Xr nroff 1
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with .2C,
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.Xr ms 6
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or
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.Xr tbl 1 .
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The recognized control sequences are:
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.Bl -tag -width Ds
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.It ESC-7
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Reverse line-feed
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.It ESC-8
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Reverse half-line-feed
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.It ESC-9
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Forward half-line-feed
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.It VT
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Vertical-tab
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.It SP
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Space
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.It TAB
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Horizontal tab
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.It RETURN
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Carriage return
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.It NL
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New line
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.El
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.Pp
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All other control codes and escape sequences are removed.
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.Nm
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converts all spaces to tabs.
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.Sh OPTIONS
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.Bl -tag -width Ds
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.It Fl p
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Print unknown escape sequences.
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.It Fl b
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Do not print backspaces and instead only print the last
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character written to each column position.
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.It Fl f
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Allow forward half line feeds in the output.
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.It Fl x
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Do not convert spaces to tabs.
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.It Fl l Ar num
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Buffer
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.Ar num
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lines in memory. By default, 128 lines are buffered.
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.El
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.Sh SEE ALSO
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.Xr nroff 1 ,
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.Xr tbl 1 ,
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.Xr ms 6
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.Sh BUGS
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.Nm
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only buffers up to 128 lines with up to 800 bytes per line
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if the line-number hasn't been set differently with the
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.Op Fl l
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flag.
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When the number of lines is bigger, the buffer is flushed and
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reverse line feeds can not operate on the flushed lines.
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225
col.c
225
col.c
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@ -1,225 +0,0 @@
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/* See LICENSE file for copyright and license details. */
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#include <limits.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "utf.h"
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#include "util.h"
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#define NLINES 128
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#define NCOLS 800
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static Rune **buf;
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static int backspace, notabs, halfline, escape;
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static size_t nline, ncol, nchar, nspaces, maxline, bs, pagesize = NLINES;
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static void
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flush(void)
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{
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Rune c;
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size_t i, j;
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for (i = 0; i < maxline; ++i) {
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for (j = 0; j < NCOLS && (c = buf[i][j]); ++j)
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efputrune(&c, stdout, "<stdout>");
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putchar('\n');
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}
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bs = nchar = nline = ncol = 0;
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}
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static void
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forward(size_t n)
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{
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size_t lim;
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for (lim = ncol + n; ncol != lim && nchar < NCOLS - 1; ++nchar) {
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switch (buf[nline][nchar]) {
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case '\b':
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--ncol;
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break;
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case '\0':
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buf[nline][nchar] = ' ';
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/* FALLTHROUGH */
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default:
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++ncol;
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break;
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}
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}
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}
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static void
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linefeed(int up, int rcarriage)
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{
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size_t oncol = ncol;
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nspaces = 0;
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if (up > 0) {
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if (nline == pagesize - 1) {
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flush();
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} else {
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if (++nline > maxline)
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maxline = nline;
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}
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} else if (nline > 0) {
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--nline;
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}
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bs = 0;
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if (rcarriage) {
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forward(oncol);
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nchar = ncol = 0;
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}
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}
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static void
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newchar(Rune c)
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{
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Rune *cp;
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forward(nspaces);
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nspaces = 0;
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switch (c) {
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case ' ':
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forward(1);
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break;
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case '\r':
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nchar = ncol = 0;
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break;
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case '\t':
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forward(8 - ncol % 8);
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break;
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case '\b':
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if (ncol > 0)
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--ncol;
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if (nchar > 0)
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--nchar;
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bs = 1;
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break;
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default:
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cp = &buf[nline][nchar];
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if (*cp && *cp != ' ' && bs && !backspace && nchar != NCOLS - 3) {
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memmove(cp + 3, cp + 1, (NCOLS - nchar - 2) * sizeof(*cp));
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cp[1] = '\b';
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nchar += 2;
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}
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if (nchar != NCOLS - 1) {
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for (cp = buf[nline]; cp < &buf[nline][nchar]; ++cp) {
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if (*cp == '\0')
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*cp = ' ';
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}
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buf[nline][nchar++] = c;
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++ncol;
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}
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bs = 0;
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}
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}
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static void
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col(void)
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{
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Rune r;
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int ret;
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while (efgetrune(&r, stdin, "<stdin>")) {
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switch (r) {
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case '\x1b':
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ret = efgetrune(&r, stdin, "<stdin>");
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switch (r) {
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case '8': /* reverse half-line-feed */
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case '7': /* reverse line-feed */
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linefeed(-1, 0);
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continue;
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case '9': /* forward half-line-feed */
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if (halfline)
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break;
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linefeed(1, 0);
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continue;
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}
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if (!escape)
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continue;
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newchar('\x1b');
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if (ret)
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newchar(r);
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break;
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case '\v':
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linefeed(-1, 0);
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break;
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case ' ':
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if (!notabs) {
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if (++nspaces != 8)
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continue;
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r = '\t';
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nspaces = 0;
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}
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/* FALLTHROUGH */
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case '\r':
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case '\b':
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case '\t':
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newchar(r);
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break;
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case '\n':
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linefeed(1, 1);
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break;
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default:
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if (!iscntrlrune(r))
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newchar(r);
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break;
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}
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}
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}
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static void
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allocbuf(void)
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{
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Rune **bp;
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buf = ereallocarray(NULL, pagesize, sizeof(*buf));
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for (bp = buf; bp < buf + pagesize; ++bp)
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*bp = ereallocarray(NULL, NCOLS, sizeof(**buf));
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}
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static void
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usage(void)
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{
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eprintf("usage: %s [-pbfx] [-l num]\n", argv0);
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}
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int
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main(int argc, char *argv[])
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{
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int ret = 0;
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ARGBEGIN {
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case 'b':
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backspace = 1;
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break;
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case 'f':
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halfline = 1;
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break;
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case 'l':
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pagesize = estrtonum(EARGF(usage()), 1, MIN(SIZE_MAX, LLONG_MAX));
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break;
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case 'p':
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escape = 1;
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break;
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case 'x':
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notabs = 1;
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break;
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default:
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usage();
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} ARGEND;
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if (argc)
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usage();
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allocbuf();
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col();
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flush();
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ret |= fshut(stdin, "<stdin>") | fshut(stdout, "<stdout>");
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return ret;
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}
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