Source split out into .c and man page.
This commit is contained in:
parent
1e9c8a68fc
commit
008d73c1d6
64
ansi2text.1
Normal file
64
ansi2text.1
Normal file
@ -0,0 +1,64 @@
|
||||
ansi2text.1
|
||||
.\" $NetBSD: colorbars.6,v 1.3 2012/06/09 23:15:13 njoly Exp $
|
||||
.\"
|
||||
.\" Copyright (c) 2012, 2013 Nathanial Sloss <nathanialsloss@yahoo.com.au>
|
||||
.\" 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.
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
||||
.\"
|
||||
.Dd July 28, 2013
|
||||
.Dt ANSI2TEXT 1
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm ansi2text
|
||||
.Nd formats ANSI text files or standard input for display
|
||||
.Sh SYNOPSIS
|
||||
.Nm
|
||||
.Op Fl c
|
||||
.Op Fl w Ar width
|
||||
.Op Fl l Ar length
|
||||
.Op Ar file
|
||||
.Sh DESCRIPTION
|
||||
The
|
||||
.Nm
|
||||
command formats ANSI text for display
|
||||
.Bl -tag -width Ds
|
||||
.It Fl c
|
||||
Display formatted text in color suitable for display with less -R
|
||||
.It Fl w Ar width
|
||||
Display formatted text in with a maximum
|
||||
.Ar width
|
||||
in coloumns. Defaults to 80 coloumns.
|
||||
.It Fl l Ar length
|
||||
Display formatted text in with a maximum
|
||||
.Ar length
|
||||
(height) in rows. Defaults to 25 rows.
|
||||
.It Ar file
|
||||
File to display, if not specified standard input is used.
|
||||
.Sh SEE ALSO
|
||||
.Xr less 1
|
||||
.Sh HISTORY
|
||||
.Nm
|
||||
appeared in
|
||||
.Nx 7.0 .
|
||||
.Sh AUTHORS
|
||||
Nathanial Sloss
|
||||
455
ansi2text.c
Normal file
455
ansi2text.c
Normal file
@ -0,0 +1,455 @@
|
||||
/*-
|
||||
* Copyright (c) 2012, 2013 Nathanial Sloss <nathanialsloss@yahoo.com.au>
|
||||
* 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <fcntl.h>
|
||||
#include <inttypes.h>
|
||||
#include <limits.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
|
||||
int lines = 25;
|
||||
int cols = 80;
|
||||
|
||||
char *screen;
|
||||
char *bgcolor;
|
||||
char *fgcolor;
|
||||
char *attributes;
|
||||
int screensize;
|
||||
|
||||
char ansibuffer[256];
|
||||
char *leftover;
|
||||
|
||||
int curpos, newpos, cury, newy, curx, newx;
|
||||
int ansiattr, ansiattr_old;
|
||||
int bg_color, fg_color, oldbg, oldfg;
|
||||
|
||||
int ansipos;
|
||||
char ansicode;
|
||||
int ansinum;
|
||||
bool csistart;
|
||||
|
||||
bool colorflag;
|
||||
|
||||
void
|
||||
writebuffer(void *buf, int count) {
|
||||
int fdout = fileno(stdout);
|
||||
|
||||
write(fdout, buf, count);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
void
|
||||
writescreen(void) {
|
||||
int newbg, newfg, newattr, m, n, o, p;
|
||||
int colorcode_len;
|
||||
char colorcode[20];
|
||||
char nl = 0x0a;
|
||||
char buf[2048];
|
||||
int buffercount = 0;
|
||||
int buffersize = 2048;
|
||||
|
||||
for (m = 0; m < screensize; m += cols) {
|
||||
for (n = 0; n < cols; n++) {
|
||||
o = n + m;
|
||||
|
||||
if (colorflag && (attributes[o] != ansiattr_old)) {
|
||||
|
||||
snprintf(colorcode, sizeof(colorcode),
|
||||
"\033[m");
|
||||
|
||||
colorcode_len = strlen(colorcode);
|
||||
for (p = 0; p < colorcode_len; p++) {
|
||||
if (buffercount >= buffersize) {
|
||||
writebuffer(buf, buffercount);
|
||||
buffercount = 0;
|
||||
}
|
||||
buf[buffercount] = colorcode[p];
|
||||
buffercount++;
|
||||
}
|
||||
}
|
||||
|
||||
if (colorflag && (bgcolor[o] != oldbg ||
|
||||
fgcolor[o] != oldfg || attributes[o]
|
||||
!= ansiattr_old || n == 0)) {
|
||||
if (attributes[o] == -1)
|
||||
newattr = 0;
|
||||
else
|
||||
newattr = attributes[o];
|
||||
|
||||
if (bgcolor[o] == -1)
|
||||
newbg = 49;
|
||||
else
|
||||
newbg = bgcolor[o];
|
||||
|
||||
if (fgcolor[o] == -1)
|
||||
newfg = 39;
|
||||
else
|
||||
newfg = fgcolor[o];
|
||||
|
||||
snprintf(colorcode, sizeof(colorcode),
|
||||
"\033[%d;%d;%dm", newfg, newbg, newattr);
|
||||
|
||||
ansiattr_old = attributes[o];
|
||||
oldbg = bgcolor[o];
|
||||
oldfg = fgcolor[o];
|
||||
|
||||
colorcode_len = strlen(colorcode);
|
||||
for (p = 0; p < colorcode_len; p++) {
|
||||
if (buffercount >= buffersize) {
|
||||
writebuffer(buf, buffercount);
|
||||
buffercount = 0;
|
||||
}
|
||||
buf[buffercount] = colorcode[p];
|
||||
buffercount++;
|
||||
}
|
||||
}
|
||||
|
||||
if (buffercount >= buffersize) {
|
||||
writebuffer(buf, buffercount);
|
||||
buffercount = 0;
|
||||
}
|
||||
buf[buffercount] = screen[o];
|
||||
buffercount++;
|
||||
}
|
||||
if (buffercount >= buffersize) {
|
||||
writebuffer(buf, buffercount);
|
||||
buffercount = 0;
|
||||
}
|
||||
buf[buffercount] = nl;
|
||||
buffercount++;
|
||||
}
|
||||
writebuffer(buf, buffercount);
|
||||
|
||||
return;
|
||||
}
|
||||
void parseansi(void) {
|
||||
unsigned int j, k, l;
|
||||
/* Strip first two characters esc[ */
|
||||
for (j = 0; j < sizeof(ansibuffer); j++) {
|
||||
if (j + 2 >= (sizeof(ansibuffer)))
|
||||
k = 0;
|
||||
else
|
||||
k = ansibuffer[j + 2];
|
||||
ansibuffer[j] = k;
|
||||
}
|
||||
ansinum = strtoimax(ansibuffer, &leftover, 10);
|
||||
strcpy(ansibuffer, leftover);
|
||||
|
||||
if (ansicode == 'J') {
|
||||
writescreen();
|
||||
|
||||
ansiattr = 0;
|
||||
bg_color = 49;
|
||||
fg_color = 39;
|
||||
|
||||
if (ansinum == 2)
|
||||
l = 0;
|
||||
else
|
||||
l = (cury * cols) + curx - 1;
|
||||
for (j = l; j < (unsigned int)screensize; j++) {
|
||||
screen[j] = ' ';
|
||||
attributes[j] = ansiattr;
|
||||
bgcolor[j] = bg_color;
|
||||
fgcolor[j] = fg_color;
|
||||
}
|
||||
}
|
||||
if (ansicode == 'A') {
|
||||
writescreen();
|
||||
if (ansinum == 0)
|
||||
cury--;
|
||||
else if (ansinum > 0)
|
||||
cury -= ansinum;
|
||||
if (cury < 1)
|
||||
cury = 1;
|
||||
}
|
||||
if (ansicode == 'B') {
|
||||
if (ansinum == 0)
|
||||
cury++;
|
||||
else if (ansinum > 0)
|
||||
cury += ansinum;
|
||||
if (cury > lines) {
|
||||
writescreen();
|
||||
cury = lines;
|
||||
}
|
||||
}
|
||||
if (ansicode == 'C') {
|
||||
if (ansinum == 0)
|
||||
curx++;
|
||||
else if (ansinum > 0)
|
||||
curx += ansinum;
|
||||
if (curx > cols) {
|
||||
writescreen();
|
||||
curx = cols;
|
||||
}
|
||||
}
|
||||
if (ansicode == 'D') {
|
||||
writescreen();
|
||||
if (ansinum == 0)
|
||||
curx--;
|
||||
else if (ansinum > 0)
|
||||
curx -= ansinum;
|
||||
if (curx < 1)
|
||||
curx = 1;
|
||||
}
|
||||
if (ansicode == 'E') {
|
||||
if (ansinum == 0)
|
||||
cury++;
|
||||
if (ansinum > 0)
|
||||
cury += ansinum;
|
||||
curx = 1;
|
||||
if (cury > lines) {
|
||||
writescreen();
|
||||
cury = lines;
|
||||
}
|
||||
}
|
||||
if (ansicode == 'F') {
|
||||
writescreen();
|
||||
if (ansinum == 0)
|
||||
cury--;
|
||||
if (ansinum > 0)
|
||||
cury -= ansinum;
|
||||
curx = 1;
|
||||
if (cury < 1)
|
||||
cury = 1;
|
||||
}
|
||||
if (ansicode == 'G') {
|
||||
if (ansinum < curx)
|
||||
writescreen();
|
||||
if (ansinum > 0)
|
||||
curx = ansinum;
|
||||
if (curx > cols) {
|
||||
writescreen();
|
||||
curx = cols;
|
||||
}
|
||||
}
|
||||
if (ansicode == 'H' || ansicode == 'f') {
|
||||
if (ansinum < 1)
|
||||
newy = 1;
|
||||
else
|
||||
newy = ansinum;
|
||||
|
||||
if (ansibuffer[0] == ';') {
|
||||
for (j = 0; j < sizeof(ansibuffer); j++) {
|
||||
if (j + 1 >= (sizeof(ansibuffer)))
|
||||
k = 0;
|
||||
else
|
||||
k = ansibuffer[j + 1];
|
||||
ansibuffer[j] = k;
|
||||
}
|
||||
newx = strtoimax(ansibuffer, &leftover, 10);
|
||||
if (newx < 1)
|
||||
newx = 1;
|
||||
}
|
||||
|
||||
if (newx > cols)
|
||||
newx = cols;
|
||||
if (newy > lines)
|
||||
newy = lines;
|
||||
|
||||
if ((newy < cury))
|
||||
writescreen();
|
||||
curx = newx;
|
||||
cury = newy;
|
||||
}
|
||||
if (ansicode == 'm') {
|
||||
if (ansinum >= 0 && ansinum < 30)
|
||||
ansiattr = ansinum;
|
||||
else if (ansinum >= 30 && ansinum <= 39)
|
||||
fg_color = ansinum;
|
||||
else if (ansinum >= 40 && ansinum < 49)
|
||||
bg_color = ansinum;
|
||||
|
||||
while (ansibuffer[0] == ';') {
|
||||
for (j = 0; j < sizeof(ansibuffer); j++) {
|
||||
if (j + 1 >= (sizeof(ansibuffer)))
|
||||
k = 0;
|
||||
else
|
||||
k = ansibuffer[j + 1];
|
||||
ansibuffer[j] = k;
|
||||
}
|
||||
ansinum = strtoimax(ansibuffer, &leftover, 10);
|
||||
strcpy(ansibuffer, leftover);
|
||||
|
||||
if (ansinum >= 0 && ansinum < 30)
|
||||
ansiattr = ansinum;
|
||||
else if (ansinum >= 30 && ansinum <= 39)
|
||||
fg_color = ansinum;
|
||||
else if (ansinum >= 40 && ansinum < 49)
|
||||
bg_color = ansinum;
|
||||
}
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc, char **argv) {
|
||||
int ch, nr, readpos;
|
||||
int fdin = fileno(stdin);
|
||||
char buffer[2048];
|
||||
|
||||
cols = 80;
|
||||
lines = 25;
|
||||
|
||||
curpos = newpos = 0;
|
||||
cury = newy = 1;
|
||||
curx = newx = 1;
|
||||
bg_color = fg_color = oldbg = oldfg = -1;
|
||||
ansiattr = ansiattr_old = -1;
|
||||
|
||||
colorflag = false; /* Defaults to b&w */
|
||||
|
||||
while ((ch = getopt(argc, argv, "cl:w:")) != -1)
|
||||
switch (ch) {
|
||||
case 'c':
|
||||
colorflag = true;
|
||||
break;
|
||||
case 'l':
|
||||
lines = atoi(optarg); /* lines per screen */
|
||||
break;
|
||||
case 'w':
|
||||
cols = atoi(optarg); /* coloumns per screen */
|
||||
break;
|
||||
default:
|
||||
case '?':
|
||||
(void)fprintf(stderr,
|
||||
"usage: ansi2text [-c -w [width] -l [lines]] [file]\n");
|
||||
exit(EXIT_FAILURE);
|
||||
/* NOTREACHED */
|
||||
}
|
||||
argv += optind;
|
||||
|
||||
if (*argv) {
|
||||
if ((fdin = open(*argv, O_RDONLY)) < 0)
|
||||
err("Error opening file: %s", *argv);
|
||||
}
|
||||
|
||||
screensize = cols * lines;
|
||||
if (screensize < 1) {
|
||||
fprintf(stderr, "Screensize must be at least 1 x 1.\n");
|
||||
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
/* Allocate virtual screen */
|
||||
screen = malloc(screensize);
|
||||
attributes = malloc(screensize);
|
||||
bgcolor = malloc(screensize);
|
||||
fgcolor = malloc(screensize);
|
||||
|
||||
/* Initialise virtual screen with spaces */
|
||||
memset(screen, ' ', screensize);
|
||||
memset(bgcolor, -1, screensize);
|
||||
memset(fgcolor, -1, screensize);
|
||||
memset(attributes, -1, screensize);
|
||||
|
||||
while ((nr = read(fdin, &buffer, sizeof(buffer))) != -1
|
||||
&& nr != 0) {
|
||||
for(readpos = 0; readpos < nr; readpos++) {
|
||||
|
||||
if (buffer[readpos] == 0x1b) {
|
||||
csistart = true;
|
||||
memset(ansibuffer, 0, sizeof(ansibuffer));
|
||||
ansipos = 0;
|
||||
ansinum = 0;
|
||||
ansicode = 0;
|
||||
}
|
||||
if (csistart) {
|
||||
ansibuffer[ansipos] = buffer[readpos];
|
||||
|
||||
if (ansibuffer[ansipos] >= '0' &&
|
||||
ansipos > 1 && ansibuffer[1] != '[')
|
||||
csistart = false;
|
||||
|
||||
if (ansibuffer[ansipos] >= 'A' &&
|
||||
ansipos > 1 && ansibuffer[1] == '[') {
|
||||
ansicode = ansibuffer[ansipos];
|
||||
} else
|
||||
ansicode = 0;
|
||||
if (ansicode) {
|
||||
parseansi();
|
||||
csistart = false;
|
||||
ansicode = 0;
|
||||
}
|
||||
ansipos++;
|
||||
} else {
|
||||
if (buffer[readpos] == 0x0a) {
|
||||
cury++;
|
||||
curx = 1;
|
||||
}
|
||||
if (buffer[readpos] == 0x0d)
|
||||
curx = 1;
|
||||
if (buffer[readpos] == 0x08) {
|
||||
curx--;
|
||||
if (curx < 1)
|
||||
curx = 1;
|
||||
}
|
||||
|
||||
if (curx > cols) {
|
||||
cury++;
|
||||
curx = 1;
|
||||
}
|
||||
if (cury > lines) {
|
||||
writescreen();
|
||||
cury = 1;
|
||||
}
|
||||
|
||||
curpos = ((cury - 1) * cols) + curx - 1;
|
||||
if (curpos == screensize) {
|
||||
cury = curx = 1;
|
||||
curpos = 0;
|
||||
}
|
||||
|
||||
if (buffer[readpos] >= ' ') {
|
||||
if ((fg_color != 39 || bg_color != 49) &&
|
||||
ansiattr == 0)
|
||||
ansiattr = 22;
|
||||
|
||||
attributes[curpos] = ansiattr;
|
||||
bgcolor[curpos] = bg_color;
|
||||
fgcolor[curpos] = fg_color;
|
||||
screen[curpos] = buffer[readpos];
|
||||
curx++;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
writescreen();
|
||||
|
||||
close(fdin);
|
||||
|
||||
/* free virtual screen */
|
||||
free(fgcolor);
|
||||
free(bgcolor);
|
||||
free(attributes);
|
||||
free(screen);
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user