904 lines
28 KiB
C
904 lines
28 KiB
C
/*
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* libcaca Colour ASCII-Art library
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* Copyright © 2002—2021 Sam Hocevar <sam@hocevar.net>
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* 2006 Jean-Yves Lamoureux <jylam@lnxscene.org>
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* All Rights Reserved
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*
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* This library is free software. It comes without any warranty, to
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* the extent permitted by applicable law. You can redistribute it
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* and/or modify it under the terms of the Do What the Fuck You Want
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* to Public License, Version 2, as published by Sam Hocevar. See
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* http://www.wtfpl.net/ for more details.
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*/
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/*
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* This file contains text import and export functions
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*/
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#include "config.h"
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#if !defined(__KERNEL__)
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# include <stdlib.h>
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# include <stdio.h>
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# include <string.h>
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#endif
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#include "caca.h"
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#include "caca_internals.h"
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#include "codec.h"
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struct import
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{
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uint32_t clearattr;
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/* ANSI Graphic Rendition Combination Mode */
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uint8_t fg, bg; /* ANSI-context fg/bg */
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uint8_t dfg, dbg; /* Default fg/bg */
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uint8_t bold, blink, italics, negative, concealed, underline;
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uint8_t faint, strike, proportional; /* unsupported */
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};
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static void ansi_parse_grcm(caca_canvas_t *, struct import *,
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unsigned int, unsigned int const *);
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ssize_t _import_text(caca_canvas_t *cv, void const *data, size_t size)
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{
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char const *text = (char const *)data;
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unsigned int width = 0, height = 0, x = 0, y = 0, i;
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caca_set_canvas_size(cv, 0, 0);
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for(i = 0; i < size; i++)
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{
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unsigned char ch = *text++;
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if(ch == '\r')
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continue;
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if(ch == '\n')
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{
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x = 0;
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y++;
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continue;
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}
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if(x >= width || y >= height)
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{
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if(x >= width)
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width = x + 1;
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if(y >= height)
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height = y + 1;
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if (caca_set_canvas_size(cv, width, height) < 0)
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return -1;
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}
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caca_put_char(cv, x, y, ch);
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x++;
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}
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if (y > height)
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{
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if (caca_set_canvas_size(cv, width, height = y) < 0)
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return -1;
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}
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return (ssize_t)size;
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}
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ssize_t _import_ansi(caca_canvas_t *cv, void const *data, size_t size, int utf8)
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{
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struct import im;
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unsigned char const *buffer = (unsigned char const*)data;
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unsigned int i, j, skip, growx = 0, growy = 0, dummy = 0;
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unsigned int width, height;
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uint32_t savedattr;
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int x = 0, y = 0, save_x = 0, save_y = 0;
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if(utf8)
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{
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width = cv->width;
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height = cv->height;
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growx = !width;
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growy = !height;
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x = cv->frames[cv->frame].x;
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y = cv->frames[cv->frame].y;
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}
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else
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{
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caca_set_canvas_size(cv, width = 80, height = 0);
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growx = 0;
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growy = 1;
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}
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if(utf8)
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{
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im.dfg = CACA_DEFAULT;
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im.dbg = CACA_TRANSPARENT;
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}
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else
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{
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im.dfg = CACA_LIGHTGRAY;
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im.dbg = CACA_BLACK;
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}
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caca_set_color_ansi(cv, im.dfg, im.dbg);
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im.clearattr = caca_get_attr(cv, -1, -1);
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ansi_parse_grcm(cv, &im, 1, &dummy);
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for(i = 0; i < size; i += skip)
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{
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uint32_t ch = 0;
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int wch = 0;
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skip = 1;
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if(!utf8 && buffer[i] == '\x1a' && i + 7 < size
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&& !memcmp(buffer + i + 1, "SAUCE00", 7))
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break; /* End before SAUCE data */
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else if(buffer[i] == '\r')
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{
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x = 0;
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}
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else if(buffer[i] == '\n')
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{
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x = 0;
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y++;
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}
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else if(buffer[i] == '\t')
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{
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x = (x + 8) & ~7;
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}
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else if(buffer[i] == '\x08')
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{
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if(x > 0)
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x--;
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}
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/* If there are not enough characters to parse the escape sequence,
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* wait until the next try. We require 3. */
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else if(buffer[i] == '\033' && i + 2 >= size)
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break;
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/* XXX: What the fuck is this shit? */
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else if(buffer[i] == '\033' && buffer[i + 1] == '('
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&& buffer[i + 2] == 'B')
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{
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skip += 2;
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}
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/* Interpret escape commands, as per Standard ECMA-48 "Control
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* Functions for Coded Character Sets", 5.4. Control sequences. */
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else if(buffer[i] == '\033' && buffer[i + 1] == '[')
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{
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unsigned int argc = 0, argv[101];
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unsigned int param, inter, final;
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/* Compute offsets to parameter bytes, intermediate bytes and
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* to the final byte. Only the final byte is mandatory, there
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* can be zero of the others.
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* 0 param=2 inter final final+1
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* +-----+------------------+---------------------+-----------------+
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* | CSI | parameter bytes | intermediate bytes | final byte |
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* | | 0x30 - 0x3f | 0x20 - 0x2f | 0x40 - 0x7e |
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* | ^[[ | 0123456789:;<=>? | SPC !"#$%&'()*+,-./ | azAZ@[\]^_`{|}~ |
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* +-----+------------------+---------------------+-----------------+
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*/
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param = 2;
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for(inter = param; i + inter < size; inter++)
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if(buffer[i + inter] < 0x30 || buffer[i + inter] > 0x3f)
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break;
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for(final = inter; i + final < size; final++)
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if(buffer[i + final] < 0x20 || buffer[i + final] > 0x2f)
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break;
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if(i + final >= size
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|| buffer[i + final] < 0x40 || buffer[i + final] > 0x7e)
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break; /* Invalid Final Byte */
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skip += final;
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/* Sanity checks */
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if(param < inter && buffer[i + param] >= 0x3c)
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{
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/* Private sequence, only parse what we know */
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debug("ansi import: private sequence \"^[[%.*s\"",
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final - param + 1, buffer + i + param);
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continue; /* Private sequence, skip it entirely */
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}
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if(final - param > 100)
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continue; /* Suspiciously long sequence, skip it */
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/* Parse parameter bytes as per ECMA-48 5.4.2: Parameter string
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* format */
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if(param < inter)
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{
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argv[0] = 0;
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for(j = param; j < inter; j++)
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{
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if(buffer[i + j] == ';')
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argv[++argc] = 0;
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else if(buffer[i + j] >= '0' && buffer[i + j] <= '9')
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argv[argc] = 10 * argv[argc] + (buffer[i + j] - '0');
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}
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argc++;
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}
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/* Interpret final byte. The code representations are given in
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* ECMA-48 5.4: Control sequences, and the code definitions are
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* given in ECMA-48 8.3: Definition of control functions. */
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switch(buffer[i + final])
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{
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case 'H': /* CUP (0x48) - Cursor Position */
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x = (argc > 1 && argv[1] > 0) ? argv[1] - 1 : 0;
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y = (argc > 0 && argv[0] > 0) ? argv[0] - 1 : 0;
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break;
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case 'A': /* CUU (0x41) - Cursor Up */
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y -= argc ? argv[0] : 1;
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if(y < 0)
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y = 0;
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break;
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case 'B': /* CUD (0x42) - Cursor Down */
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y += argc ? argv[0] : 1;
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break;
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case 'C': /* CUF (0x43) - Cursor Right */
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x += argc ? argv[0] : 1;
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break;
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case 'D': /* CUB (0x44) - Cursor Left */
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x -= argc ? argv[0] : 1;
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if(x < 0)
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x = 0;
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break;
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case 'G': /* CHA (0x47) - Cursor Character Absolute */
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x = (argc && argv[0] > 0) ? argv[0] - 1 : 0;
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break;
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case 'J': /* ED (0x4a) - Erase In Page */
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savedattr = caca_get_attr(cv, -1, -1);
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caca_set_attr(cv, im.clearattr);
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if(!argc || argv[0] == 0)
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{
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caca_draw_line(cv, x, y, width, y, ' ');
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caca_fill_box(cv, 0, y + 1, width - 1, height - 1, ' ');
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}
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else if(argv[0] == 1)
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{
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caca_fill_box(cv, 0, 0, width - 1, y - 1, ' ');
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caca_draw_line(cv, 0, y, x, y, ' ');
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}
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else if(argv[0] == 2)
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//x = y = 0;
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caca_fill_box(cv, 0, 0, width - 1, height - 1, ' ');
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caca_set_attr(cv, savedattr);
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break;
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case 'K': /* EL (0x4b) - Erase In Line */
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if(!argc || argv[0] == 0)
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caca_draw_line(cv, x, y, width, y, ' ');
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else if(argv[0] == 1)
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caca_draw_line(cv, 0, y, x, y, ' ');
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else if(argv[0] == 2)
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if((unsigned int)x < width)
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caca_draw_line(cv, x, y, width - 1, y, ' ');
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//x = width;
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break;
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case 'P': /* DCH (0x50) - Delete Character */
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if(!argc || argv[0] == 0)
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argv[0] = 1; /* echo -ne 'foobar\r\e[0P\n' */
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for(j = 0; (unsigned int)(j + argv[0]) < width; j++)
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{
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caca_put_char(cv, j, y,
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caca_get_char(cv, j + argv[0], y));
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caca_put_attr(cv, j, y,
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caca_get_attr(cv, j + argv[0], y));
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}
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#if 0
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savedattr = caca_get_attr(cv, -1, -1);
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caca_set_attr(cv, im.clearattr);
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for( ; (unsigned int)j < width; j++)
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caca_put_char(cv, j, y, ' ');
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caca_set_attr(cv, savedattr);
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#endif
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break;
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case 'X': /* ECH (0x58) - Erase Character */
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if(argc && argv[0])
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{
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savedattr = caca_get_attr(cv, -1, -1);
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caca_set_attr(cv, im.clearattr);
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caca_draw_line(cv, x, y, x + argv[0] - 1, y, ' ');
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caca_set_attr(cv, savedattr);
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}
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break;
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case 'd': /* VPA (0x64) - Line Position Absolute */
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y = (argc && argv[0] > 0) ? argv[0] - 1 : 0;
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break;
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case 'f': /* HVP (0x66) - Character And Line Position */
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x = (argc > 1 && argv[1] > 0) ? argv[1] - 1 : 0;
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y = (argc > 0 && argv[0] > 0) ? argv[0] - 1 : 0;
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break;
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case 'h': /* SM (0x68) - FIXME */
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debug("ansi import: set mode %i", argc ? (int)argv[0] : -1);
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break;
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case 'l': /* RM (0x6c) - FIXME */
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debug("ansi import: reset mode %i", argc ? (int)argv[0] : -1);
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break;
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case 'm': /* SGR (0x6d) - Select Graphic Rendition */
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if(argc)
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ansi_parse_grcm(cv, &im, argc, argv);
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else
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ansi_parse_grcm(cv, &im, 1, &dummy);
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break;
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case 's': /* Private (save cursor position) */
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save_x = x;
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save_y = y;
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break;
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case 'u': /* Private (reload cursor position) */
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x = save_x;
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y = save_y;
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break;
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default:
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debug("ansi import: unknown command \"^[[%.*s\"",
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final - param + 1, buffer + i + param);
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break;
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}
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}
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/* Parse OSC stuff. */
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else if(buffer[i] == '\033' && buffer[i + 1] == ']')
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{
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char *string;
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unsigned int command = 0;
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unsigned int mode = 2, semicolon, final;
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for(semicolon = mode; i + semicolon < size; semicolon++)
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{
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if(buffer[i + semicolon] < '0' || buffer[i + semicolon] > '9')
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break;
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command = 10 * command + (buffer[i + semicolon] - '0');
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}
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if(i + semicolon >= size || buffer[i + semicolon] != ';')
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break; /* Invalid Mode */
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for(final = semicolon + 1; i + final < size; final++)
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if(buffer[i + final] < 0x20)
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break;
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if(i + final >= size || buffer[i + final] != '\a')
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break; /* Not enough data or no bell found */
|
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/* FIXME: XTerm also reacts to <ESC><backslash> and <ST> */
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/* FIXME: differenciate between not enough data (try again)
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* and invalid data (print shit) */
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skip += final;
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string = malloc(final - (semicolon + 1) + 1);
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memcpy(string, buffer + (semicolon + 1), final - (semicolon + 1));
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string[final - (semicolon + 1)] = '\0';
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debug("ansi import: got OSC command %i string '%s'", command,
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string);
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free(string);
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}
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|
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/* Form feed means a new frame */
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else if (i + 1 < size && buffer[i] == '\f' && buffer[i + 1] == '\n')
|
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{
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int f = caca_get_frame_count(cv);
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caca_create_frame(cv, f);
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caca_set_frame(cv, f);
|
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x = y = 0;
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skip++;
|
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}
|
||
|
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/* Get the character we’re going to paste */
|
||
else if(utf8)
|
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{
|
||
size_t bytes;
|
||
|
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if(i + 6 < size)
|
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ch = caca_utf8_to_utf32((char const *)(buffer + i), &bytes);
|
||
else
|
||
{
|
||
/* Add a trailing zero to what we're going to read */
|
||
char tmp[7];
|
||
memcpy(tmp, buffer + i, size - i);
|
||
tmp[size - i] = '\0';
|
||
ch = caca_utf8_to_utf32(tmp, &bytes);
|
||
}
|
||
|
||
if(!bytes)
|
||
{
|
||
/* If the Unicode is invalid, assume it was latin1. */
|
||
ch = buffer[i];
|
||
bytes = 1;
|
||
}
|
||
wch = caca_utf32_is_fullwidth(ch) ? 2 : 1;
|
||
skip += (int)(bytes - 1);
|
||
}
|
||
else
|
||
{
|
||
ch = caca_cp437_to_utf32(buffer[i]);
|
||
wch = 1;
|
||
}
|
||
|
||
/* Wrap long lines or grow horizontally */
|
||
while((unsigned int)x + wch > width)
|
||
{
|
||
if(growx)
|
||
{
|
||
savedattr = caca_get_attr(cv, -1, -1);
|
||
caca_set_attr(cv, im.clearattr);
|
||
if (caca_set_canvas_size(cv, width = x + wch, height) < 0)
|
||
return -1;
|
||
caca_set_attr(cv, savedattr);
|
||
}
|
||
else
|
||
{
|
||
x -= width;
|
||
y++;
|
||
}
|
||
}
|
||
|
||
/* Scroll or grow vertically */
|
||
if((unsigned int)y >= height)
|
||
{
|
||
savedattr = caca_get_attr(cv, -1, -1);
|
||
caca_set_attr(cv, im.clearattr);
|
||
if(growy)
|
||
{
|
||
if (caca_set_canvas_size(cv, width, height = y + 1) < 0)
|
||
return -1;
|
||
}
|
||
else
|
||
{
|
||
int lines = (y - height) + 1;
|
||
|
||
for(j = 0; j + lines < height; j++)
|
||
{
|
||
memcpy(cv->attrs + j * cv->width,
|
||
cv->attrs + (j + lines) * cv->width, cv->width * 4);
|
||
memcpy(cv->chars + j * cv->width,
|
||
cv->chars + (j + lines) * cv->width, cv->width * 4);
|
||
}
|
||
caca_fill_box(cv, 0, height - lines,
|
||
cv->width - 1, height - 1, ' ');
|
||
y -= lines;
|
||
}
|
||
caca_set_attr(cv, savedattr);
|
||
}
|
||
|
||
/* Now paste our character, if any */
|
||
if(wch)
|
||
{
|
||
caca_put_char(cv, x, y, ch);
|
||
x += wch;
|
||
}
|
||
}
|
||
|
||
if(growy && (unsigned int)y > height)
|
||
{
|
||
savedattr = caca_get_attr(cv, -1, -1);
|
||
caca_set_attr(cv, im.clearattr);
|
||
if (caca_set_canvas_size(cv, width, height = y))
|
||
return -1;
|
||
caca_set_attr(cv, savedattr);
|
||
}
|
||
|
||
cv->frames[cv->frame].x = x;
|
||
cv->frames[cv->frame].y = y;
|
||
|
||
// if(utf8)
|
||
// caca_set_attr(cv, savedattr);
|
||
|
||
return i;
|
||
}
|
||
|
||
/* Generate UTF-8 representation of current canvas. */
|
||
void *_export_utf8(caca_canvas_t const *cv, size_t *bytes, int cr)
|
||
{
|
||
static uint8_t const palette[] =
|
||
{
|
||
0, 4, 2, 6, 1, 5, 3, 7,
|
||
8, 12, 10, 14, 9, 13, 11, 15
|
||
};
|
||
|
||
char *data, *cur;
|
||
int x, y;
|
||
|
||
/* 23 bytes assumed for max length per pixel ('\e[5;1;3x;4y;9x;10ym' plus
|
||
* 4 max bytes for a UTF-8 character).
|
||
* Add height*9 to that (zeroes color at the end and jump to next line) */
|
||
*bytes = (cv->height * 9) + (cv->width * cv->height * 23);
|
||
cur = data = malloc(*bytes);
|
||
|
||
for(y = 0; y < cv->height; y++)
|
||
{
|
||
uint32_t *lineattr = cv->attrs + y * cv->width;
|
||
uint32_t *linechar = cv->chars + y * cv->width;
|
||
|
||
uint8_t prevfg = 0x10;
|
||
uint8_t prevbg = 0x10;
|
||
|
||
for(x = 0; x < cv->width; x++)
|
||
{
|
||
uint32_t attr = lineattr[x];
|
||
uint32_t ch = linechar[x];
|
||
uint8_t ansifg, ansibg, fg, bg;
|
||
|
||
if(ch == CACA_MAGIC_FULLWIDTH)
|
||
continue;
|
||
|
||
ansifg = caca_attr_to_ansi_fg(attr);
|
||
ansibg = caca_attr_to_ansi_bg(attr);
|
||
|
||
fg = ansifg < 0x10 ? palette[ansifg] : 0x10;
|
||
bg = ansibg < 0x10 ? palette[ansibg] : 0x10;
|
||
|
||
/* TODO: the [0 could be omitted in some cases */
|
||
if(fg != prevfg || bg != prevbg)
|
||
{
|
||
cur += sprintf(cur, "\033[0");
|
||
|
||
if(fg < 8)
|
||
cur += sprintf(cur, ";3%d", fg);
|
||
else if(fg < 16)
|
||
cur += sprintf(cur, ";1;3%d;9%d", fg - 8, fg - 8);
|
||
|
||
if(bg < 8)
|
||
cur += sprintf(cur, ";4%d", bg);
|
||
else if(bg < 16)
|
||
cur += sprintf(cur, ";5;4%d;10%d", bg - 8, bg - 8);
|
||
|
||
cur += sprintf(cur, "m");
|
||
}
|
||
|
||
cur += caca_utf32_to_utf8(cur, ch);
|
||
|
||
prevfg = fg;
|
||
prevbg = bg;
|
||
}
|
||
|
||
if(prevfg != 0x10 || prevbg != 0x10)
|
||
cur += sprintf(cur, "\033[0m");
|
||
|
||
cur += sprintf(cur, cr ? "\r\n" : "\n");
|
||
}
|
||
|
||
/* Crop to really used size */
|
||
debug("utf8 export: alloc %lu bytes, realloc %lu",
|
||
(unsigned long int)*bytes, (unsigned long int)(cur - data));
|
||
*bytes = (uintptr_t)(cur - data);
|
||
data = realloc(data, *bytes);
|
||
|
||
return data;
|
||
}
|
||
|
||
/* Generate ANSI representation of current canvas. */
|
||
void *_export_ansi(caca_canvas_t const *cv, size_t *bytes)
|
||
{
|
||
static uint8_t const palette[] =
|
||
{
|
||
0, 4, 2, 6, 1, 5, 3, 7,
|
||
8, 12, 10, 14, 9, 13, 11, 15
|
||
};
|
||
|
||
char *data, *cur;
|
||
int x, y;
|
||
|
||
uint8_t prevfg = -1;
|
||
uint8_t prevbg = -1;
|
||
|
||
/* 16 bytes assumed for max length per pixel ('\e[5;1;3x;4ym' plus
|
||
* 1 byte for a CP437 character).
|
||
* Add height*9 to that (zeroes color at the end and jump to next line) */
|
||
*bytes = (cv->height * 9) + (cv->width * cv->height * 16);
|
||
cur = data = malloc(*bytes);
|
||
|
||
for(y = 0; y < cv->height; y++)
|
||
{
|
||
uint32_t *lineattr = cv->attrs + y * cv->width;
|
||
uint32_t *linechar = cv->chars + y * cv->width;
|
||
|
||
for(x = 0; x < cv->width; x++)
|
||
{
|
||
uint8_t ansifg = caca_attr_to_ansi_fg(lineattr[x]);
|
||
uint8_t ansibg = caca_attr_to_ansi_bg(lineattr[x]);
|
||
uint8_t fg = ansifg < 0x10 ? palette[ansifg] : CACA_LIGHTGRAY;
|
||
uint8_t bg = ansibg < 0x10 ? palette[ansibg] : CACA_BLACK;
|
||
uint32_t ch = linechar[x];
|
||
|
||
if(ch == CACA_MAGIC_FULLWIDTH)
|
||
ch = '?';
|
||
|
||
if(fg != prevfg || bg != prevbg)
|
||
{
|
||
cur += sprintf(cur, "\033[0;");
|
||
|
||
if(fg < 8)
|
||
if(bg < 8)
|
||
cur += sprintf(cur, "3%d;4%dm", fg, bg);
|
||
else
|
||
cur += sprintf(cur, "5;3%d;4%dm", fg, bg - 8);
|
||
else
|
||
if(bg < 8)
|
||
cur += sprintf(cur, "1;3%d;4%dm", fg - 8, bg);
|
||
else
|
||
cur += sprintf(cur, "5;1;3%d;4%dm", fg - 8, bg - 8);
|
||
}
|
||
|
||
*cur++ = caca_utf32_to_cp437(ch);
|
||
|
||
prevfg = fg;
|
||
prevbg = bg;
|
||
}
|
||
|
||
if(cv->width == 80)
|
||
{
|
||
cur += sprintf(cur, "\033[s\n\033[u");
|
||
}
|
||
else
|
||
{
|
||
cur += sprintf(cur, "\033[0m\r\n");
|
||
prevfg = -1;
|
||
prevbg = -1;
|
||
}
|
||
}
|
||
|
||
/* Crop to really used size */
|
||
debug("ansi export: alloc %lu bytes, realloc %lu",
|
||
(unsigned long int)*bytes, (unsigned long int)(cur - data));
|
||
*bytes = (uintptr_t)(cur - data);
|
||
data = realloc(data, *bytes);
|
||
|
||
return data;
|
||
}
|
||
|
||
/* Export a text file with IRC colours */
|
||
void *_export_irc(caca_canvas_t const *cv, size_t *bytes)
|
||
{
|
||
static uint8_t const palette[] =
|
||
{
|
||
1, 2, 3, 10, 5, 6, 7, 15, /* Dark */
|
||
14, 12, 9, 11, 4, 13, 8, 0, /* Light */
|
||
};
|
||
|
||
char *data, *cur;
|
||
int x, y;
|
||
|
||
/* 14 bytes assumed for max length per pixel. Worst case scenario:
|
||
* ^Cxx,yy 6 bytes
|
||
* ^B^B 2 bytes
|
||
* ch 6 bytes
|
||
* 3 bytes for max length per line. Worst case scenario:
|
||
* <spc> 1 byte (for empty lines)
|
||
* \r\n 2 bytes
|
||
* In real life, the average bytes per pixel value will be around 5.
|
||
*/
|
||
|
||
*bytes = 2 + cv->height * (3 + cv->width * 14);
|
||
cur = data = malloc(*bytes);
|
||
|
||
for(y = 0; y < cv->height; y++)
|
||
{
|
||
uint32_t *lineattr = cv->attrs + y * cv->width;
|
||
uint32_t *linechar = cv->chars + y * cv->width;
|
||
|
||
uint8_t prevfg = 0x10;
|
||
uint8_t prevbg = 0x10;
|
||
|
||
for(x = 0; x < cv->width; x++)
|
||
{
|
||
uint32_t attr = lineattr[x];
|
||
uint32_t ch = linechar[x];
|
||
uint8_t ansifg, ansibg, fg, bg;
|
||
|
||
if(ch == CACA_MAGIC_FULLWIDTH)
|
||
continue;
|
||
|
||
ansifg = caca_attr_to_ansi_fg(attr);
|
||
ansibg = caca_attr_to_ansi_bg(attr);
|
||
|
||
fg = ansifg < 0x10 ? palette[ansifg] : 0x10;
|
||
bg = ansibg < 0x10 ? palette[ansibg] : 0x10;
|
||
|
||
/* TODO: optimise series of same fg / same bg
|
||
* don't change fg value if ch == ' '
|
||
* make sure the \x03,%d trick works everywhere */
|
||
if(bg != prevbg || fg != prevfg)
|
||
{
|
||
int need_escape = 0;
|
||
|
||
if(bg == 0x10)
|
||
{
|
||
if(fg == 0x10)
|
||
cur += sprintf(cur, "\x0f");
|
||
else
|
||
{
|
||
if(prevbg == 0x10)
|
||
cur += sprintf(cur, "\x03%d", fg);
|
||
else
|
||
cur += sprintf(cur, "\x0f\x03%d", fg);
|
||
|
||
if(ch == (uint32_t)',')
|
||
need_escape = 1;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if(fg == 0x10)
|
||
cur += sprintf(cur, "\x0f\x03,%d", bg);
|
||
else
|
||
cur += sprintf(cur, "\x03%d,%d", fg, bg);
|
||
}
|
||
|
||
if(ch >= (uint32_t)'0' && ch <= (uint32_t)'9')
|
||
need_escape = 1;
|
||
|
||
if(need_escape)
|
||
cur += sprintf(cur, "\x02\x02");
|
||
}
|
||
|
||
cur += caca_utf32_to_utf8(cur, ch);
|
||
prevfg = fg;
|
||
prevbg = bg;
|
||
}
|
||
|
||
/* TODO: do the same the day we optimise whole lines above */
|
||
if(!cv->width)
|
||
*cur++ = ' ';
|
||
|
||
*cur++ = '\r';
|
||
*cur++ = '\n';
|
||
}
|
||
|
||
/* Crop to really used size */
|
||
debug("IRC export: alloc %lu bytes, realloc %lu",
|
||
(unsigned long int)*bytes, (unsigned long int)(cur - data));
|
||
*bytes = (uintptr_t)(cur - data);
|
||
data = realloc(data, *bytes);
|
||
|
||
return data;
|
||
}
|
||
|
||
/* XXX : ANSI loader helper */
|
||
|
||
static void ansi_parse_grcm(caca_canvas_t *cv, struct import *im,
|
||
unsigned int argc, unsigned int const *argv)
|
||
{
|
||
static uint8_t const ansi2caca[] =
|
||
{
|
||
CACA_BLACK, CACA_RED, CACA_GREEN, CACA_BROWN,
|
||
CACA_BLUE, CACA_MAGENTA, CACA_CYAN, CACA_LIGHTGRAY
|
||
};
|
||
|
||
unsigned int j;
|
||
uint8_t efg, ebg; /* Effective (libcaca) fg/bg */
|
||
|
||
for(j = 0; j < argc; j++)
|
||
{
|
||
/* Defined in ECMA-48 8.3.117: SGR - SELECT GRAPHIC RENDITION */
|
||
if(argv[j] >= 30 && argv[j] <= 37)
|
||
im->fg = ansi2caca[argv[j] - 30];
|
||
else if(argv[j] >= 40 && argv[j] <= 47)
|
||
im->bg = ansi2caca[argv[j] - 40];
|
||
else if(argv[j] >= 90 && argv[j] <= 97)
|
||
im->fg = ansi2caca[argv[j] - 90] + 8;
|
||
else if(argv[j] >= 100 && argv[j] <= 107)
|
||
im->bg = ansi2caca[argv[j] - 100] + 8;
|
||
else switch(argv[j])
|
||
{
|
||
case 0: /* default rendition */
|
||
im->fg = im->dfg;
|
||
im->bg = im->dbg;
|
||
im->bold = im->blink = im->italics = im->negative
|
||
= im->concealed = im->underline = im->faint = im->strike
|
||
= im->proportional = 0;
|
||
break;
|
||
case 1: /* bold or increased intensity */
|
||
im->bold = 1;
|
||
break;
|
||
case 2: /* faint, decreased intensity or second colour */
|
||
im->faint = 1;
|
||
break;
|
||
case 3: /* italicized */
|
||
im->italics = 1;
|
||
break;
|
||
case 4: /* singly underlined */
|
||
im->underline = 1;
|
||
break;
|
||
case 5: /* slowly blinking (less then 150 per minute) */
|
||
case 6: /* rapidly blinking (150 per minute or more) */
|
||
im->blink = 1;
|
||
break;
|
||
case 7: /* negative image */
|
||
im->negative = 1;
|
||
break;
|
||
case 8: /* concealed characters */
|
||
im->concealed = 1;
|
||
break;
|
||
case 9: /* crossed-out (characters still legible but marked as to be
|
||
* deleted */
|
||
im->strike = 1;
|
||
break;
|
||
case 21: /* doubly underlined */
|
||
im->underline = 1;
|
||
break;
|
||
case 22: /* normal colour or normal intensity (neither bold nor
|
||
* faint) */
|
||
im->bold = im->faint = 0;
|
||
break;
|
||
case 23: /* not italicized, not fraktur */
|
||
im->italics = 0;
|
||
break;
|
||
case 24: /* not underlined (neither singly nor doubly) */
|
||
im->underline = 0;
|
||
break;
|
||
case 25: /* steady (not blinking) */
|
||
im->blink = 0;
|
||
break;
|
||
case 26: /* (reserved for proportional spacing as specified in CCITT
|
||
* Recommendation T.61) */
|
||
im->proportional = 1;
|
||
break;
|
||
case 27: /* positive image */
|
||
im->negative = 0;
|
||
break;
|
||
case 28: /* revealed characters */
|
||
im->concealed = 0;
|
||
break;
|
||
case 29: /* not crossed out */
|
||
im->strike = 0;
|
||
break;
|
||
case 38: /* (reserved for future standardization, intended for setting
|
||
* character foreground colour as specified in ISO 8613-6
|
||
* [CCITT Recommendation T.416]) */
|
||
break;
|
||
case 39: /* default display colour (implementation-defined) */
|
||
im->fg = im->dfg;
|
||
break;
|
||
case 48: /* (reserved for future standardization, intended for setting
|
||
* character background colour as specified in ISO 8613-6
|
||
* [CCITT Recommendation T.416]) */
|
||
break;
|
||
case 49: /* default background colour (implementation-defined) */
|
||
im->bg = im->dbg;
|
||
break;
|
||
case 50: /* (reserved for cancelling the effect of the rendering
|
||
* aspect established by parameter value 26) */
|
||
im->proportional = 0;
|
||
break;
|
||
default:
|
||
debug("ansi import: unknown sgr %i", argv[j]);
|
||
break;
|
||
}
|
||
}
|
||
|
||
if(im->concealed)
|
||
{
|
||
efg = ebg = CACA_TRANSPARENT;
|
||
}
|
||
else
|
||
{
|
||
efg = im->negative ? im->bg : im->fg;
|
||
ebg = im->negative ? im->fg : im->bg;
|
||
|
||
if(im->bold)
|
||
{
|
||
if(efg < 8)
|
||
efg += 8;
|
||
else if(efg == CACA_DEFAULT)
|
||
efg = CACA_WHITE;
|
||
}
|
||
}
|
||
|
||
caca_set_color_ansi(cv, efg, ebg);
|
||
}
|
||
|