594 lines
14 KiB
Plaintext
594 lines
14 KiB
Plaintext
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NetBSD Problem Report #48092
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From www@NetBSD.org Sun Jul 28 13:39:50 2013
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Return-Path: <www@NetBSD.org>
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Received: from mail.netbsd.org (mail.netbsd.org [149.20.53.66])
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(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
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(Client CN "mail.NetBSD.org", Issuer "Postmaster NetBSD.org" (verified OK))
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by mollari.NetBSD.org (Postfix) with ESMTPS id CF007705DA
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for <gnats-bugs@gnats.NetBSD.org>; Sun, 28 Jul 2013 13:39:50 +0000 (UTC)
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Message-Id: <20130728133948.90B4D70D0A@mollari.NetBSD.org>
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Date: Sun, 28 Jul 2013 13:39:48 +0000 (UTC)
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From: nathanialsloss@yahoo.com.au
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Reply-To: nathanialsloss@yahoo.com.au
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To: gnats-bugs@NetBSD.org
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Subject: ansi2text a utility for formatting text with ANSI sequences for display with less.
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X-Send-Pr-Version: www-1.0
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*>Number:* 48092
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*>Category:* bin
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*>Synopsis:* ansi2text a utility for formatting text with ANSI sequences for display with less.
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*>Confidential:* no
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*>Severity:* non-critical
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*>Priority:* medium
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*>Responsible:* bin-bug-people
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*>State:* open
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*>Class:* change-request
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*>Submitter-Id:* net
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*>Arrival-Date:* Sun Jul 28 13:40:00 +0000 2013
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*>Originator:* Nat Sloss
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*>Release:* NetBSD 5.0.1
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*>Organization:*
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*>Environment:*
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NetBSD beast 5.0.1 NetBSD 5.0.1 (LOCKDEBUG) #4: Wed Jul 17 22:24:41 EST 2013 build@beast:/home/build/NetBSD-5.0.1_source_tree/usr/src/sys/arch/i386/compile/obj/LOCKDEBUG i386
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*>Description:*
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Consider the following:
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tip myconnection | tee myconnection.log
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Assume that my connection sends ANSI cursor and colour sequences.
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Try to display myconnection.log with less or open with a text editor
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less myconnection.log
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You will find the display illegible ansi2text is my attempt at rectifying this.
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*>How-To-Repeat:*
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Refer to Description.
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*>Fix:*
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To use:
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cat myconnection.log | ansi2text | less
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ansi2text.c
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/*-
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* Copyright (c) 2012, 2013 Nathanial Sloss <nathanialsloss@yahoo.com.au>
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <fcntl.h>
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#include <inttypes.h>
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#include <limits.h>
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#include <stdbool.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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int lines = 25;
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int cols = 80;
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char *screen;
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char *bgcolor;
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char *fgcolor;
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char *attributes;
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int screensize;
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char ansibuffer[256];
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char *leftover;
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int curpos, newpos, cury, newy, curx, newx;
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int ansiattr, ansiattr_old;
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int bg_color, fg_color, oldbg, oldfg;
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int ansipos;
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char ansicode;
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int ansinum;
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bool csistart;
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bool colorflag;
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void
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writebuffer(void *buf, int count) {
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int fdout = fileno(stdout);
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write(fdout, buf, count);
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return;
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}
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void
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writescreen(void) {
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int newbg, newfg, newattr, m, n, o, p;
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int colorcode_len;
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char colorcode[20];
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char nl = 0x0a;
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char buf[2048];
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int buffercount = 0;
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int buffersize = 2048;
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for (m = 0; m < screensize; m += cols) {
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for (n = 0; n < cols; n++) {
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o = n + m;
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if (colorflag && (attributes[o] != ansiattr_old)) {
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snprintf(colorcode, sizeof(colorcode),
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"\033[m");
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colorcode_len = strlen(colorcode);
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for (p = 0; p < colorcode_len; p++) {
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if (buffercount >= buffersize) {
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writebuffer(buf, buffercount);
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buffercount = 0;
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}
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buf[buffercount] = colorcode[p];
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buffercount++;
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}
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}
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if (colorflag && (bgcolor[o] != oldbg ||
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fgcolor[o] != oldfg || attributes[o]
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!= ansiattr_old || n == 0)) {
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if (attributes[o] == -1)
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newattr = 0;
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else
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newattr = attributes[o];
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if (bgcolor[o] == -1)
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newbg = 49;
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else
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newbg = bgcolor[o];
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if (fgcolor[o] == -1)
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newfg = 39;
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else
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newfg = fgcolor[o];
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snprintf(colorcode, sizeof(colorcode),
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"\033[%d;%d;%dm", newfg, newbg, newattr);
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ansiattr_old = attributes[o];
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oldbg = bgcolor[o];
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oldfg = fgcolor[o];
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colorcode_len = strlen(colorcode);
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for (p = 0; p < colorcode_len; p++) {
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if (buffercount >= buffersize) {
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writebuffer(buf, buffercount);
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buffercount = 0;
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}
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buf[buffercount] = colorcode[p];
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buffercount++;
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}
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}
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if (buffercount >= buffersize) {
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writebuffer(buf, buffercount);
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buffercount = 0;
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}
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buf[buffercount] = screen[o];
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buffercount++;
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}
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if (buffercount >= buffersize) {
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writebuffer(buf, buffercount);
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buffercount = 0;
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}
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buf[buffercount] = nl;
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buffercount++;
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}
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writebuffer(buf, buffercount);
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return;
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}
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void parseansi(void) {
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unsigned int j, k, l;
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/* Strip first two characters esc[ */
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for (j = 0; j < sizeof(ansibuffer); j++) {
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if (j + 2 >= (sizeof(ansibuffer)))
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k = 0;
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else
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k = ansibuffer[j + 2];
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ansibuffer[j] = k;
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}
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ansinum = strtoimax(ansibuffer, &leftover, 10);
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strcpy(ansibuffer, leftover);
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if (ansicode == 'J') {
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writescreen();
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ansiattr = 0;
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bg_color = 49;
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fg_color = 39;
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if (ansinum == 2)
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l = 0;
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else
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l = (cury * cols) + curx - 1;
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for (j = l; j < (unsigned int)screensize; j++) {
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screen[j] = ' ';
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attributes[j] = ansiattr;
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bgcolor[j] = bg_color;
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fgcolor[j] = fg_color;
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}
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}
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if (ansicode == 'A') {
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writescreen();
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if (ansinum == 0)
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cury--;
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else if (ansinum > 0)
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cury -= ansinum;
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if (cury < 1)
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cury = 1;
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}
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if (ansicode == 'B') {
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if (ansinum == 0)
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cury++;
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else if (ansinum > 0)
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cury += ansinum;
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if (cury > lines) {
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writescreen();
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cury = lines;
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}
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}
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if (ansicode == 'C') {
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if (ansinum == 0)
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curx++;
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else if (ansinum > 0)
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curx += ansinum;
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if (curx > cols) {
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writescreen();
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curx = cols;
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}
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}
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if (ansicode == 'D') {
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writescreen();
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if (ansinum == 0)
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curx--;
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else if (ansinum > 0)
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curx -= ansinum;
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if (curx < 1)
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curx = 1;
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}
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if (ansicode == 'E') {
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if (ansinum == 0)
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cury++;
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if (ansinum > 0)
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cury += ansinum;
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curx = 1;
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if (cury > lines) {
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writescreen();
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cury = lines;
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}
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}
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if (ansicode == 'F') {
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writescreen();
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if (ansinum == 0)
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cury--;
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if (ansinum > 0)
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cury -= ansinum;
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curx = 1;
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if (cury < 1)
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cury = 1;
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}
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if (ansicode == 'G') {
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if (ansinum < curx)
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writescreen();
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if (ansinum > 0)
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curx = ansinum;
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if (curx > cols) {
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writescreen();
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curx = cols;
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}
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}
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if (ansicode == 'H' || ansicode == 'f') {
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if (ansinum < 1)
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newy = 1;
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else
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newy = ansinum;
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if (ansibuffer[0] == ';') {
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for (j = 0; j < sizeof(ansibuffer); j++) {
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if (j + 1 >= (sizeof(ansibuffer)))
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k = 0;
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else
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k = ansibuffer[j + 1];
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ansibuffer[j] = k;
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}
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newx = strtoimax(ansibuffer, &leftover, 10);
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if (newx < 1)
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newx = 1;
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}
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if (newx > cols)
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newx = cols;
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if (newy > lines)
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newy = lines;
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if ((newy < cury))
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writescreen();
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curx = newx;
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cury = newy;
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}
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if (ansicode == 'm') {
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if (ansinum >= 0 && ansinum < 30)
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ansiattr = ansinum;
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else if (ansinum >= 30 && ansinum <= 39)
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fg_color = ansinum;
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else if (ansinum >= 40 && ansinum < 49)
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bg_color = ansinum;
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while (ansibuffer[0] == ';') {
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for (j = 0; j < sizeof(ansibuffer); j++) {
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if (j + 1 >= (sizeof(ansibuffer)))
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k = 0;
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else
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k = ansibuffer[j + 1];
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ansibuffer[j] = k;
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}
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ansinum = strtoimax(ansibuffer, &leftover, 10);
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strcpy(ansibuffer, leftover);
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if (ansinum >= 0 && ansinum < 30)
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ansiattr = ansinum;
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else if (ansinum >= 30 && ansinum <= 39)
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fg_color = ansinum;
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else if (ansinum >= 40 && ansinum < 49)
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bg_color = ansinum;
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}
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}
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return;
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}
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int
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main(int argc, char **argv) {
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int ch, nr, readpos;
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int fdin = fileno(stdin);
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char buffer[2048];
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cols = 80;
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lines = 25;
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curpos = newpos = 0;
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cury = newy = 1;
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curx = newx = 1;
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bg_color = fg_color = oldbg = oldfg = -1;
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ansiattr = ansiattr_old = -1;
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colorflag = false; /* Defaults to b&w */
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while ((ch = getopt(argc, argv, "cl:w:")) != -1)
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switch (ch) {
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case 'c':
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colorflag = true;
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break;
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case 'l':
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lines = atoi(optarg); /* lines per screen */
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break;
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case 'w':
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cols = atoi(optarg); /* coloumns per screen */
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break;
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default:
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case '?':
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(void)fprintf(stderr,
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"usage: ansi2text [-c -w [width] -l [lines]] [file]\n");
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exit(EXIT_FAILURE);
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/* NOTREACHED */
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}
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argv += optind;
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if (*argv) {
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if ((fdin = open(*argv, O_RDONLY)) < 0)
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err("Error opening file: %s", *argv);
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}
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screensize = cols * lines;
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if (screensize < 1) {
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fprintf(stderr, "Screensize must be at least 1 x 1.\n");
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return EXIT_FAILURE;
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}
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/* Allocate virtual screen */
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screen = malloc(screensize);
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attributes = malloc(screensize);
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bgcolor = malloc(screensize);
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fgcolor = malloc(screensize);
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/* Initialise virtual screen with spaces */
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memset(screen, ' ', screensize);
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memset(bgcolor, -1, screensize);
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memset(fgcolor, -1, screensize);
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memset(attributes, -1, screensize);
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while ((nr = read(fdin, &buffer, sizeof(buffer))) != -1
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&& nr != 0) {
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for(readpos = 0; readpos < nr; readpos++) {
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if (buffer[readpos] == 0x1b) {
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csistart = true;
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memset(ansibuffer, 0, sizeof(ansibuffer));
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ansipos = 0;
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ansinum = 0;
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ansicode = 0;
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}
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if (csistart) {
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ansibuffer[ansipos] = buffer[readpos];
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if (ansibuffer[ansipos] >= '0' &&
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ansipos > 1 && ansibuffer[1] != '[')
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csistart = false;
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if (ansibuffer[ansipos] >= 'A' &&
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ansipos > 1 && ansibuffer[1] == '[') {
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ansicode = ansibuffer[ansipos];
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} else
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ansicode = 0;
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if (ansicode) {
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parseansi();
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csistart = false;
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ansicode = 0;
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}
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ansipos++;
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} else {
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if (buffer[readpos] == 0x0a) {
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cury++;
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curx = 1;
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}
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if (buffer[readpos] == 0x0d)
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curx = 1;
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if (buffer[readpos] == 0x08) {
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curx--;
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if (curx < 1)
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curx = 1;
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}
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if (curx > cols) {
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cury++;
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curx = 1;
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}
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if (cury > lines) {
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writescreen();
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cury = 1;
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}
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curpos = ((cury - 1) * cols) + curx - 1;
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if (curpos == screensize) {
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cury = curx = 1;
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curpos = 0;
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}
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if (buffer[readpos] >= ' ') {
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if ((fg_color != 39 || bg_color != 49) &&
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ansiattr == 0)
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ansiattr = 22;
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attributes[curpos] = ansiattr;
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bgcolor[curpos] = bg_color;
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fgcolor[curpos] = fg_color;
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screen[curpos] = buffer[readpos];
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curx++;
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}
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}
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}
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}
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writescreen();
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close(fdin);
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/* free virtual screen */
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free(fgcolor);
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free(bgcolor);
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free(attributes);
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free(screen);
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return EXIT_SUCCESS;
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}
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ansi2text.1
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.\" $NetBSD: colorbars.6,v 1.3 2012/06/09 23:15:13 njoly Exp $
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.\"
|
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.\" 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
|
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.Dt ANSI2TEXT 1
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.Os
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.Sh NAME
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||
.Nm ansi2text
|
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.Nd formats ANSI text files or standard input for display
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.Sh SYNOPSIS
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.Nm
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.Op Fl c
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||
.Op Fl w Ar width
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||
.Op Fl l Ar length
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||
.Op Ar file
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.Sh DESCRIPTION
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The
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||
.Nm
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||
command formats ANSI text for display
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||
.Bl -tag -width Ds
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||
.It Fl c
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||
Display formatted text in color suitable for display with less -R
|
||
.It Fl w Ar width
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||
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
|
||
|
||
|
||
I hope this is useful.
|
||
|
||
Regards,
|
||
|
||
Nat
|
||
|
||
------------------------------------------------------------------------
|
||
<https://www.netbsd.org/> NetBSD Home <https://www.netbsd.org/>
|
||
|
||
|
||
<https://www.netbsd.org/support/query-pr.html> NetBSD PR Database
|
||
Search <https://www.netbsd.org/support/query-pr.html>
|
||
|
||
------------------------------------------------------------------------
|
||
(Contact us) <https://www.netbsd.org/cgi-bin/feedback.cgi> $NetBSD:
|
||
query-full-pr,v 1.39 2013/11/01 18:47:49 spz Exp $
|
||
$NetBSD: gnats_config.sh,v 1.8 2006/05/07 09:23:38 tsutsui Exp $
|
||
Copyright <20> 1994-2007 The NetBSD Foundation, Inc. ALL RIGHTS RESERVED.
|
||
<https://www.netbsd.org/about/disclaimer.html>
|
||
|