[hackers] [sbase] Remove col(1) || sin
commit 5197affac58759205f648e523f730977fc3eae08
Author: sin <sin_AT_2f30.org>
Date: Thu Nov 20 13:56:27 2014 +0000
Remove col(1)
Not quite necessary to have this in sbase at the moment. We can do
a clean implementation when required.
This implementation also has some bugs that they have been fixed
in OpenBSD -current but I am too lazy to backport (we also had local
changes to col(1)).
printf(1) as imported from OpenBSD will stay for now because I need
it for booting my system.
diff --git a/Makefile b/Makefile
index 671fd31..c8086f7 100644
--- a/Makefile
+++ b/Makefile
_AT_@ -63,7 +63,6 @@ BIN =\
chroot\
cksum\
cmp\
- col\
cols\
comm\
cp\
diff --git a/TODO b/TODO
index 62eb6ce..c14fe17 100644
--- a/TODO
+++ b/TODO
_AT_@ -23,10 +23,9 @@ stty
tabs
tput
-The following programs have been imported from OpenBSD and need
+The following program(s) have been imported from OpenBSD and need
replacing or cleaning up:
-col
printf
If you are looking for some work to do on sbase, another option is to
diff --git a/col.1 b/col.1
deleted file mode 100644
index 312fd49..0000000
--- a/col.1
+++ /dev/null
_AT_@ -1,126 +0,0 @@
-.\" $OpenBSD: src/usr.bin/col/col.1,v 1.11 2010/10/29 07:58:04 jmc Exp $
-.\" $NetBSD: col.1,v 1.4 1995/03/26 05:25:52 glass Exp $
-.\"
-.\" Copyright (c) 1990, 1993
-.\" The Regents of the University of California. All rights reserved.
-.\"
-.\" This code is derived from software contributed to Berkeley by
-.\" Michael Rendell.
-.\"
-.\" 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. 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.
-.\"
-.\" _AT_(#)col.1 8.1 (Berkeley) 6/29/93
-.\"
-.Dd $Mdocdate: May 31 2007 $
-.Dt COL 1
-.Os
-.Sh NAME
-.Nm col
-.Nd filter reverse line feeds and backspaces from input
-.Sh SYNOPSIS
-.Nm col
-.Op Fl bfhx
-.Op Fl l Ar num
-.Sh DESCRIPTION
-.Nm
-filters out reverse (and half-reverse) line feeds so that the output is
-in the correct order with only forward and half-forward line
-feeds, and replaces whitespace characters with tabs where possible.
-.Pp
-.Nm
-reads from the standard input and writes to the standard output.
-.Pp
-The options are as follows:
-.Bl -tag -width Ds
-.It Fl b
-Do not output any backspaces, printing only the last character
-written to each column position.
-This can be useful in processing the output of
-.Xr mandoc 1 .
-.It Fl f
-Forward half-line feeds are permitted
-.Pf ( Ns Dq fine
-mode).
-Normally characters printed on a half-line boundary are printed
-on the following line.
-.It Fl h
-Compress spaces into tabs.
-This is the default behavior.
-.It Fl l Ar num
-Buffer at least
-.Ar num
-lines in memory.
-By default, 128 lines are buffered.
-.It Fl x
-Output multiple spaces instead of tabs.
-.El
-.Pp
-The control sequences for carriage motion that
-.Nm
-understands and their decimal values are listed in the following
-table:
-.Pp
-.Bl -tag -width "carriage return" -compact
-.It ESC\-7
-Reverse line feed (escape then 7).
-.It ESC\-10
-Half reverse line feed (escape then 10).
-.It ESC\-11
-Half forward line feed (escape then 11).
-.It backspace
-Moves back one column (8); ignored in the first column.
-.It carriage return
-(13)
-.It newline
-Forward line feed (10); also does carriage return.
-.It shift in
-Shift to normal character set (15).
-.It shift out
-Shift to alternate character set (14).
-.It space
-Moves forward one column (32).
-.It tab
-Moves forward to next tab stop (9).
-.It vertical tab
-Reverse line feed (11).
-.El
-.Pp
-All unrecognized control characters and escape sequences are
-discarded.
-.Pp
-.Nm
-keeps track of the character set as characters are read and makes
-sure the character set is correct when they are output.
-.Pp
-If the input attempts to back up to the last flushed line,
-.Nm
-will display a warning message.
-.Sh SEE ALSO
-.Xr expand 1
-.Sh HISTORY
-A
-.Nm
-command appeared in
-.At v6 .
diff --git a/col.c b/col.c
deleted file mode 100644
index e30161f..0000000
--- a/col.c
+++ /dev/null
_AT_@ -1,507 +0,0 @@
-/* $OpenBSD: src/usr.bin/col/col.c,v 1.11 2009/10/27 23:59:36 deraadt Exp $ */
-/* $NetBSD: col.c,v 1.7 1995/09/02 05:48:50 jtc Exp $ */
-
-/*-
- * Copyright (c) 1990, 1993, 1994
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Michael Rendell of the Memorial University of Newfoundland.
- *
- * 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. 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.
- */
-
-#include <ctype.h>
-#include <err.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <limits.h>
-
-#include "util.h"
-
-#define BS '\b' /* backspace */
-#define TAB '\t' /* tab */
-#define SPACE ' ' /* space */
-#define NL '\n' /* newline */
-#define CR '\r' /* carriage return */
-#define ESC '\033' /* escape */
-#define SI '\017' /* shift in to normal character set */
-#define SO '\016' /* shift out to alternate character set */
-#define VT '\013' /* vertical tab (aka reverse line feed) */
-#define RLF '\007' /* ESC-07 reverse line feed */
-#define RHLF '\010' /* ESC-010 reverse half-line feed */
-#define FHLF '\011' /* ESC-011 forward half-line feed */
-
-/* build up at least this many lines before flushing them out */
-#define BUFFER_MARGIN 32
-
-typedef char CSET;
-
-typedef struct char_str {
-#define CS_NORMAL 1
-#define CS_ALTERNATE 2
- short c_column; /* column character is in */
- CSET c_set; /* character set (currently only 2) */
- char c_char; /* character in question */
-} CHAR;
-
-typedef struct line_str LINE;
-struct line_str {
- CHAR *l_line; /* characters on the line */
- LINE *l_prev; /* previous line */
- LINE *l_next; /* next line */
- int l_lsize; /* allocated sizeof l_line */
- int l_line_len; /* strlen(l_line) */
- int l_needs_sort; /* set if chars went in out of order */
- int l_max_col; /* max column in the line */
-};
-
-static LINE *alloc_line(void);
-static void dowarn(int);
-static void flush_line(LINE *);
-static void flush_lines(int);
-static void flush_blanks(void);
-static void free_line(LINE *);
-static void usage(void);
-static void *xmalloc(void *, size_t);
-
-static CSET last_set; /* char_set of last char printed */
-static LINE *lines;
-static int compress_spaces; /* if doing space -> tab conversion */
-static int fine; /* if `fine' resolution (half lines) */
-static int max_bufd_lines; /* max # lines to keep in memory */
-static int nblank_lines; /* # blanks after last flushed line */
-static int no_backspaces; /* if not to output any backspaces */
-
-#define PUTC(ch) \
- if (putchar(ch) == EOF) \
- eprintf("stdout:");
-
-int
-main(int argc, char *argv[])
-{
- int ch;
- CHAR *c;
- CSET cur_set; /* current character set */
- LINE *l; /* current line */
- int extra_lines; /* # of lines above first line */
- int cur_col; /* current column */
- int cur_line; /* line number of current position */
- int max_line; /* max value of cur_line */
- int this_line; /* line l points to */
- int nflushd_lines; /* number of lines that were flushed */
- int adjust, warned;
-
- max_bufd_lines = 128;
- compress_spaces = 1; /* compress spaces into tabs */
- ARGBEGIN {
- case 'b': /* do not output backspaces */
- no_backspaces = 1;
- break;
- case 'f': /* allow half forward line feeds */
- fine = 1;
- break;
- case 'h': /* compress spaces into tabs */
- compress_spaces = 1;
- break;
- case 'l': /* buffered line count */
- max_bufd_lines = estrtol(EARGF(usage()), 0);
- break;
- case 'x': /* do not compress spaces into tabs */
- compress_spaces = 0;
- break;
- case '?':
- default:
- usage();
- } ARGEND;
-
- if (argc != 0)
- usage();
-
- /* this value is in half lines */
- max_bufd_lines *= 2;
-
- adjust = cur_col = extra_lines = warned = 0;
- cur_line = max_line = nflushd_lines = this_line = 0;
- cur_set = last_set = CS_NORMAL;
- lines = l = alloc_line();
-
- while ((ch = getchar()) != EOF) {
- if (!isgraph(ch)) {
- switch (ch) {
- case BS: /* can't go back further */
- if (cur_col == 0)
- continue;
- --cur_col;
- continue;
- case CR:
- cur_col = 0;
- continue;
- case ESC: /* just ignore EOF */
- switch(getchar()) {
- case RLF:
- cur_line -= 2;
- break;
- case RHLF:
- cur_line--;
- break;
- case FHLF:
- cur_line++;
- if (cur_line > max_line)
- max_line = cur_line;
- }
- continue;
- case NL:
- cur_line += 2;
- if (cur_line > max_line)
- max_line = cur_line;
- cur_col = 0;
- continue;
- case SPACE:
- ++cur_col;
- continue;
- case SI:
- cur_set = CS_NORMAL;
- continue;
- case SO:
- cur_set = CS_ALTERNATE;
- continue;
- case TAB: /* adjust column */
- cur_col |= 7;
- ++cur_col;
- continue;
- case VT:
- cur_line -= 2;
- continue;
- }
- continue;
- }
-
- /* Must stuff ch in a line - are we at the right one? */
- if (cur_line != this_line - adjust) {
- LINE *lnew;
- int nmove;
-
- adjust = 0;
- nmove = cur_line - this_line;
- if (!fine) {
- /* round up to next line */
- if (cur_line & 1) {
- adjust = 1;
- nmove++;
- }
- }
- if (nmove < 0) {
- for (; nmove < 0 && l->l_prev; nmove++)
- l = l->l_prev;
- if (nmove) {
- if (nflushd_lines == 0) {
- /*
- * Allow backup past first
- * line if nothing has been
- * flushed yet.
- */
- for (; nmove < 0; nmove++) {
- lnew = alloc_line();
- l->l_prev = lnew;
- lnew->l_next = l;
- l = lines = lnew;
- extra_lines++;
- }
- } else {
- if (!warned++)
- dowarn(cur_line);
- cur_line -= nmove;
- }
- }
- } else {
- /* may need to allocate here */
- for (; nmove > 0 && l->l_next; nmove--)
- l = l->l_next;
- for (; nmove > 0; nmove--) {
- lnew = alloc_line();
- lnew->l_prev = l;
- l->l_next = lnew;
- l = lnew;
- }
- }
- this_line = cur_line + adjust;
- nmove = this_line - nflushd_lines;
- if (nmove >= max_bufd_lines + BUFFER_MARGIN) {
- nflushd_lines += nmove - max_bufd_lines;
- flush_lines(nmove - max_bufd_lines);
- }
- }
- /* grow line's buffer? */
- if (l->l_line_len + 1 >= l->l_lsize) {
- int need;
-
- need = l->l_lsize ? l->l_lsize * 2 : 90;
- l->l_line = xmalloc((void *) l->l_line,
- need * sizeof(CHAR));
- l->l_lsize = need;
- }
- c = &l->l_line[l->l_line_len++];
- c->c_char = ch;
- c->c_set = cur_set;
- c->c_column = cur_col;
- /*
- * If things are put in out of order, they will need sorting
- * when it is flushed.
- */
- if (cur_col < l->l_max_col)
- l->l_needs_sort = 1;
- else
- l->l_max_col = cur_col;
- cur_col++;
- }
- if (max_line == 0)
- exit(0); /* no lines, so just exit */
-
- /* goto the last line that had a character on it */
- for (; l->l_next; l = l->l_next)
- this_line++;
- flush_lines(this_line - nflushd_lines + extra_lines + 1);
-
- /* make sure we leave things in a sane state */
- if (last_set != CS_NORMAL)
- PUTC('\017');
-
- /* flush out the last few blank lines */
- nblank_lines = max_line - this_line;
- if (max_line & 1)
- nblank_lines++;
- else if (!nblank_lines)
- /* missing a \n on the last line? */
- nblank_lines = 2;
- flush_blanks();
- exit(0);
-}
-
-static void
-flush_lines(int nflush)
-{
- LINE *l;
-
- while (--nflush >= 0) {
- l = lines;
- lines = l->l_next;
- if (l->l_line) {
- flush_blanks();
- flush_line(l);
- }
- nblank_lines++;
- if (l->l_line)
- (void)free((void *)l->l_line);
- free_line(l);
- }
- if (lines)
- lines->l_prev = NULL;
-}
-
-/*
- * Print a number of newline/half newlines. If fine flag is set, nblank_lines
- * is the number of half line feeds, otherwise it is the number of whole line
- * feeds.
- */
-static void
-flush_blanks(void)
-{
- int half, i, nb;
-
- half = 0;
- nb = nblank_lines;
- if (nb & 1) {
- if (fine)
- half = 1;
- else
- nb++;
- }
- nb /= 2;
- for (i = nb; --i >= 0;)
- PUTC('\n');
- if (half) {
- PUTC('\033');
- PUTC('\011');
- if (!nb)
- PUTC('\r');
- }
- nblank_lines = 0;
-}
-
-/*
- * Write a line to stdout taking care of space to tab conversion (-h flag)
- * and character set shifts.
- */
-static void
-flush_line(LINE *l)
-{
- CHAR *c, *endc;
- int nchars, last_col, this_col;
-
- last_col = 0;
- nchars = l->l_line_len;
-
- if (l->l_needs_sort) {
- static CHAR *sorted;
- static int count_size, *count, i, save, sorted_size, tot;
-
- /*
- * Do an O(n) sort on l->l_line by column being careful to
- * preserve the order of characters in the same column.
- */
- if (l->l_lsize > sorted_size) {
- sorted_size = l->l_lsize;
- sorted = xmalloc((void *)sorted,
- sizeof(CHAR) * sorted_size);
- }
- if (l->l_max_col >= count_size) {
- count_size = l->l_max_col + 1;
- count = xmalloc((void *)count,
- sizeof(int) * count_size);
- }
- memset((char *)count, 0, sizeof(int) * l->l_max_col + 1);
- for (i = nchars, c = l->l_line; --i >= 0; c++)
- count[c->c_column]++;
-
- /*
- * calculate running total (shifted down by 1) to use as
- * indices into new line.
- */
- for (tot = 0, i = 0; i <= l->l_max_col; i++) {
- save = count[i];
- count[i] = tot;
- tot += save;
- }
-
- for (i = nchars, c = l->l_line; --i >= 0; c++)
- sorted[count[c->c_column]++] = *c;
- c = sorted;
- } else
- c = l->l_line;
- while (nchars > 0) {
- this_col = c->c_column;
- endc = c;
- do {
- ++endc;
- } while (--nchars > 0 && this_col == endc->c_column);
-
- /* if -b only print last character */
- if (no_backspaces)
- c = endc - 1;
-
- if (this_col > last_col) {
- int nspace = this_col - last_col;
-
- if (compress_spaces && nspace > 1) {
- int ntabs;
-
- ntabs = ((last_col % 8) + nspace) / 8;
- if (ntabs) {
- nspace -= (ntabs * 8) - (last_col % 8);
- while (--ntabs >= 0)
- PUTC('\t');
- }
- }
- while (--nspace >= 0)
- PUTC(' ');
- last_col = this_col;
- }
- last_col++;
-
- for (;;) {
- if (c->c_set != last_set) {
- switch (c->c_set) {
- case CS_NORMAL:
- PUTC('\017');
- break;
- case CS_ALTERNATE:
- PUTC('\016');
- }
- last_set = c->c_set;
- }
- PUTC(c->c_char);
- if (++c >= endc)
- break;
- PUTC('\b');
- }
- }
-}
-
-#define NALLOC 64
-
-static LINE *line_freelist;
-
-static LINE *
-alloc_line(void)
-{
- LINE *l;
- int i;
-
- if (!line_freelist) {
- l = xmalloc(NULL, sizeof(LINE) * NALLOC);
- line_freelist = l;
- for (i = 1; i < NALLOC; i++, l++)
- l->l_next = l + 1;
- l->l_next = NULL;
- }
- l = line_freelist;
- line_freelist = l->l_next;
-
- memset(l, 0, sizeof(LINE));
- return (l);
-}
-
-static void
-free_line(LINE *l)
-{
-
- l->l_next = line_freelist;
- line_freelist = l;
-}
-
-static void *
-xmalloc(void *p, size_t size)
-{
-
- if (!(p = realloc(p, size)))
- eprintf("realloc:");
- return (p);
-}
-
-static void
-usage(void)
-{
- eprintf("usage: %s [-bfhx] [-l num]\n", argv0);
-}
-
-static void
-dowarn(int line)
-{
- warnx("warning: can't back up %s",
- line < 0 ? "past first line" : "-- line already flushed");
-}
Received on Thu Nov 20 2014 - 14:58:03 CET
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