/*
* libcucul Canvas for ultrafast compositing of Unicode letters
* Copyright (c) 2002-2006 Sam Hocevar <sam@zoy.org>
* All Rights Reserved
*
* $Id$
*
* This library is free software. It comes without any warranty, to
* the extent permitted by applicable law. You can redistribute it
* and/or modify it under the terms of the Do What The Fuck You Want
* To Public License, Version 2, as published by Sam Hocevar. See
* http://sam.zoy.org/wtfpl/COPYING for more details.
*/
/*
* This file contains various import functions.
*/
#include "config.h"
#include "common.h"
#if !defined __KERNEL__
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
#endif
#include "cucul.h"
#include "cucul_internals.h"
static inline uint32_t sscanu32(void const *s)
{
uint32_t x;
memcpy(&x, s, 4);
return hton32(x);
}
static inline uint16_t sscanu16(void const *s)
{
uint16_t x;
memcpy(&x, s, 2);
return hton16(x);
}
struct import
{
uint32_t clearattr;
/* ANSI Graphic Rendition Combination Mode */
uint8_t fg, bg; /* ANSI-context fg/bg */
uint8_t dfg, dbg; /* Default fg/bg */
uint8_t bold, blink, italics, negative, concealed, underline;
uint8_t faint, strike, proportional; /* unsupported */
};
static long int import_caca(cucul_canvas_t *, void const *, unsigned int);
static long int import_text(cucul_canvas_t *, void const *, unsigned int);
static long int import_ansi(cucul_canvas_t *, void const *, unsigned int, int);
static void ansi_parse_grcm(cucul_canvas_t *, struct import *,
unsigned int, unsigned int const *);
/** \brief Import a memory buffer into a canvas
*
* Import a memory buffer into the given libcucul canvas's current
* frame. The current frame is resized accordingly and its contents are
* replaced with the imported data.
*
* Valid values for \c format are:
* - \c "": attempt to autodetect the file format.
* - \c "caca": import native libcaca files.
* - \c "text": import ASCII text files.
* - \c "ansi": import ANSI files.
* - \c "utf8": import UTF-8 files with ANSI colour codes.
*
* The number of bytes read is returned. If the file format is valid, but
* not enough data was available, 0 is returned.
*
* If an error occurs, -1 is returned and \b errno is set accordingly:
* - \c ENOMEM Not enough memory to allocate canvas.
* - \c EINVAL Invalid format requested.
*
* \param cv A libcucul canvas in which to import the file.
* \param data A memory area containing the data to be loaded into the canvas.
* \param len The size in bytes of the memory area.
* \param format A string describing the input format.
* \return The number of bytes read, or 0 if there was not enough data,
* or -1 if an error occurred.
*/
long int cucul_import_memory(cucul_canvas_t *cv, void const *data,
unsigned long int len, char const *format)
{
if(!strcasecmp("caca", format))
return import_caca(cv, data, len);
if(!strcasecmp("utf8", format))
return import_ansi(cv, data, len, 1);
if(!strcasecmp("text", format))
return import_text(cv, data, len);
if(!strcasecmp("ansi", format))
return import_ansi(cv, data, len, 0);
/* Autodetection */
if(!strcasecmp("", format))
{
unsigned char const *str = data;
unsigned int i;
/* If 4 first bytes are 0xcaca + 'CV' */
if(len >= 4 && str[0] == 0xca &&
str[1] == 0xca && str[2] == 'C' && str[3] == 'V')
return import_caca(cv, data, len);
/* If we find ESC[ argv, we guess it's an ANSI file */
for(i = 0; i + 1 < len; i++)
if((str[i] == 0x1b) && (str[i + 1] == '['))
return import_ansi(cv, data, len, 0);
/* Otherwise, import it as text */
return import_text(cv, data, len);
}
seterrno(EINVAL);
return -1;
}
/** \brief Import a file into a canvas
*
* Import a file into the given libcucul canvas's current frame. The
* current frame is resized accordingly and its contents are replaced
* with the imported data.
*
* Valid values for \c format are:
* - \c "": attempt to autodetect the file format.
* - \c "caca": import native libcaca files.
* - \c "text": import ASCII text files.
* - \c "ansi": import ANSI files.
* - \c "utf8": import UTF-8 files with ANSI colour codes.
*
* The number of bytes read is returned. If the file format is valid, but
* not enough data was available, 0 is returned.
*
* If an error occurs, -1 is returned and \b errno is set accordingly:
* - \c ENOSYS File access is not implemented on this system.
* - \c ENOMEM Not enough memory to allocate canvas.
* - \c EINVAL Invalid format requested.
* cucul_import_file() may also fail and set \b errno for any of the
* errors specified for the routine fopen().
*
* \param cv A libcucul canvas in which to import the file.
* \param filename The name of the file to load.
* \param format A string describing the input format.
* \return The number of bytes read, or 0 if there was not enough data,
* or -1 if an error occurred.
*/
long int cucul_import_file(cucul_canvas_t *cv, char const *filename,
char const *format)
{
#if defined __KERNEL__
seterrno(ENOSYS);
return -1;
#else
FILE *fp;
void *data;
long int size;
int ret;
fp = fopen(filename, "rb");
if(!fp)
return -1; /* fopen already set errno */
fseek(fp, 0, SEEK_END);
size = ftell(fp);
data = malloc(size);
if(!data)
{
fclose(fp);
seterrno(ENOMEM);
return -1;
}
fseek(fp, 0, SEEK_SET);
fread(data, size, 1, fp);
fclose(fp);
ret = cucul_import_memory(cv, data, size, format);
free(data);
return ret;
#endif
}
/** \brief Get available import formats
*
* Return a list of available import formats. The list is a NULL-terminated
* array of strings, interleaving a string containing the internal value for
* the import format, to be used with cucul_import_canvas(), and a string
* containing the natural language description for that import format.
*
* This function never fails.
*
* \return An array of strings.
*/
char const * const * cucul_get_import_list(void)
{
static char const * const list[] =
{
"", "autodetect",
"caca", "native libcaca format",
"text", "plain text",
"ansi", "ANSI coloured text",
"utf8", "UTF-8 files with ANSI colour codes",
NULL, NULL
};
return list;
}
/*
* XXX: the following functions are local.
*/
static long int import_caca(cucul_canvas_t *cv,
void const *data, unsigned int size)
{
uint8_t const *buf = (uint8_t const *)data;
unsigned int control_size, data_size, expected_size, frames, f, n;
uint16_t version, flags;
unsigned int offset;
int32_t xmin = 0, ymin = 0, xmax = 0, ymax = 0;
if(size < 20)
return 0;
if(buf[0] != 0xca || buf[1] != 0xca || buf[2] != 'C' || buf[3] != 'V')
{
debug("caca import error: expected \\xca\\xcaCV header");
goto invalid_caca;
}
control_size = sscanu32(buf + 4);
data_size = sscanu32(buf + 8);
version = sscanu16(buf + 12);
frames = sscanu32(buf + 14);
flags = sscanu16(buf + 18);
if(size < 4 + control_size + data_size)
return 0;
if(control_size < 16 + frames * 32)
{
debug("caca import error: control size %lu < expected %lu",
(unsigned long int)control_size, 16 + frames * 32);
goto invalid_caca;
}
for(expected_size = 0, f = 0; f < frames; f++)
{
unsigned int width, height, duration;
uint32_t attr;
int x, y, handlex, handley;
width = sscanu32(buf + 4 + 16 + f * 32);
height = sscanu32(buf + 4 + 16 + f * 32 + 4);
duration = sscanu32(buf + 4 + 16 + f * 32 + 8);
attr = sscanu32(buf + 4 + 16 + f * 32 + 12);
x = (int32_t)sscanu32(buf + 4 + 16 + f * 32 + 16);
y = (int32_t)sscanu32(buf + 4 + 16 + f * 32 + 20);
handlex = (int32_t)sscanu32(buf + 4 + 16 + f * 32 + 24);
handley = (int32_t)sscanu32(buf + 4 + 16 + f * 32 + 28);
expected_size += width * height * 8;
if(-handlex < xmin)
xmin = -handlex;
if(-handley < ymin)
ymin = -handley;
if((((int32_t) width) - handlex) > xmax)
xmax = ((int32_t) width) - handlex;
if((((int32_t) height) - handley) > ymax)
ymax = ((int32_t) height) - handley;
}
if(expected_size != data_size)
{
debug("caca import error: data size %lu < expected %lu",
(unsigned long int)data_size, (unsigned long int)expected_size);
goto invalid_caca;
}
cucul_set_canvas_size(cv, 0, 0);
cucul_set_canvas_size(cv, xmax - xmin, ymax - ymin);
for (f = cucul_get_frame_count(cv); f--; )
{
cucul_free_frame(cv, f);
}
for (offset = 0, f = 0; f < frames; f ++)
{
unsigned int width, height;
width = sscanu32(buf + 4 + 16 + f * 32);
height = sscanu32(buf + 4 + 16 + f * 32 + 4);
cucul_create_frame(cv, f);
cucul_set_frame(cv, f);
cv->curattr = sscanu32(buf + 4 + 16 + f * 32 + 12);
cv->frames[f].x = (int32_t)sscanu32(buf + 4 + 16 + f * 32 + 16);
cv->frames[f].y = (int32_t)sscanu32(buf + 4 + 16 + f * 32 + 20);
cv->frames[f].handlex = (int32_t)sscanu32(buf + 4 + 16 + f * 32 + 24);
cv->frames[f].handley = (int32_t)sscanu32(buf + 4 + 16 + f * 32 + 28);
/* FIXME: check for return value */
for(n = width * height; n--; )
{
int x = (n % width) - cv->frames[f].handlex - xmin;
int y = (n / width) - cv->frames[f].handley - ymin;
cucul_put_char(cv, x, y, sscanu32(buf + 4 + control_size
+ offset + 8 * n));
cucul_put_attr(cv, x, y, sscanu32(buf + 4 + control_size
+ offset + 8 * n + 4));
}
offset += width * height * 8;
cv->frames[f].x -= cv->frames[f].handlex;
cv->frames[f].y -= cv->frames[f].handley;
cv->frames[f].handlex = -xmin;
cv->frames[f].handley = -ymin;
}
cucul_set_frame(cv, 0);
return 4 + control_size + data_size;
invalid_caca:
seterrno(EINVAL);
return -1;
}
static long int import_text(cucul_canvas_t *cv,
void const *data, unsigned int size)
{
char const *text = (char const *)data;
unsigned int width = 0, height = 0, x = 0, y = 0, i;
cucul_set_canvas_size(cv, width, height);
for(i = 0; i < size; i++)
{
unsigned char ch = *text++;
if(ch == '\r')
continue;
if(ch == '\n')
{
x = 0;
y++;
continue;
}
if(x >= width || y >= height)
{
if(x >= width)
width = x + 1;
if(y >= height)
height = y + 1;
cucul_set_canvas_size(cv, width, height);
}
cucul_put_char(cv, x, y, ch);
x++;
}
if(y > height)
cucul_set_canvas_size(cv, width, height = y);
return size;
}
static long int import_ansi(cucul_canvas_t *cv,
void const *data, unsigned int size, int utf8)
{
struct import im;
unsigned char const *buffer = (unsigned char const*)data;
unsigned int i, j, skip, growx = 0, growy = 0, dummy = 0;
unsigned int width, height;
uint32_t savedattr;
int x = 0, y = 0, save_x = 0, save_y = 0;
if(utf8)
{
width = cv->width;
height = cv->height;
growx = !width;
growy = !height;
x = cv->frames[cv->frame].x;
y = cv->frames[cv->frame].y;
}
else
{
cucul_set_canvas_size(cv, width = 80, height = 0);
growx = 0;
growy = 1;
}
if(utf8)
{
im.dfg = CUCUL_DEFAULT;
im.dbg = CUCUL_TRANSPARENT;
}
else
{
im.dfg = CUCUL_LIGHTGRAY;
im.dbg = CUCUL_BLACK;
}
cucul_set_color_ansi(cv, im.dfg, im.dbg);
im.clearattr = cucul_get_attr(cv, -1, -1);
ansi_parse_grcm(cv, &im, 1, &dummy);
for(i = 0; i < size; i += skip)
{
uint32_t ch = 0;
int wch = 0;
skip = 1;
if(!utf8 && buffer[i] == '\x1a' && i + 7 < size
&& !memcmp(buffer + i + 1, "SAUCE00", 7))
break; /* End before SAUCE data */
else if(buffer[i] == '\r')
{
x = 0;
}
else if(buffer[i] == '\n')
{
x = 0;
y++;
}
else if(buffer[i] == '\t')
{
x = (x + 7) & ~7;
}
else if(buffer[i] == '\x08')
{
if(x > 0)
x--;
}
/* If there are not enough characters to parse the escape sequence,
* wait until the next try. We require 3. */
else if(buffer[i] == '\x1b' && i + 2 >= size)
break;
/* XXX: What the fuck is this shit? */
else if(buffer[i] == '\x1b' && buffer[i + 1] == '('
&& buffer[i + 2] == 'B')
{
skip += 2;
}
/* Interpret escape commands, as per Standard ECMA-48 "Control
* Functions for Coded Character Sets", 5.4. Control sequences. */
else if(buffer[i] == '\x1b' && buffer[i + 1] == '[')
{
unsigned int argc = 0, argv[101];
unsigned int param, inter, final;
/* Compute offsets to parameter bytes, intermediate bytes and
* to the final byte. Only the final byte is mandatory, there
* can be zero of the others.
* 0 param=2 inter final final+1
* +-----+------------------+---------------------+-----------------+
* | CSI | parameter bytes | intermediate bytes | final byte |
* | | 0x30 - 0x3f | 0x20 - 0x2f | 0x40 - 0x7e |
* | ^[[ | 0123456789:;<=>? | SPC !"#$%&'()*+,-./ | azAZ@[\]^_`{|}~ |
* +-----+------------------+---------------------+-----------------+
*/
param = 2;
for(inter = param; i + inter < size; inter++)
if(buffer[i + inter] < 0x30 || buffer[i + inter] > 0x3f)
break;
for(final = inter; i + final < size; final++)
if(buffer[i + final] < 0x20 || buffer[i + final] > 0x2f)
break;
if(i + final >= size
|| buffer[i + final] < 0x40 || buffer[i + final] > 0x7e)
break; /* Invalid Final Byte */
skip += final;
/* Sanity checks */
if(param < inter && buffer[i + param] >= 0x3c)
{
/* Private sequence, only parse what we know */
debug("ansi import: private sequence \"^[[%.*s\"",
final - param + 1, buffer + i + param);
continue; /* Private sequence, skip it entirely */
}
if(final - param > 100)
continue; /* Suspiciously long sequence, skip it */
/* Parse parameter bytes as per ECMA-48 5.4.2: Parameter string
* format */
if(param < inter)
{
argv[0] = 0;
for(j = param; j < inter; j++)
{
if(buffer[i + j] == ';')
argv[++argc] = 0;
else if(buffer[i + j] >= '0' && buffer[i + j] <= '9')
argv[argc] = 10 * argv[argc] + (buffer[i + j] - '0');
}
argc++;
}
/* Interpret final byte. The code representations are given in
* ECMA-48 5.4: Control sequences, and the code definitions are
* given in ECMA-48 8.3: Definition of control functions. */
switch(buffer[i + final])
{
case 'H': /* CUP (0x48) - Cursor Position */
x = (argc > 1 && argv[1] > 0) ? argv[1] - 1 : 0;
y = (argc > 0 && argv[0] > 0) ? argv[0] - 1 : 0;
break;
case 'A': /* CUU (0x41) - Cursor Up */
y -= argc ? argv[0] : 1;
if(y < 0)
y = 0;
break;
case 'B': /* CUD (0x42) - Cursor Down */
y += argc ? argv[0] : 1;
break;
case 'C': /* CUF (0x43) - Cursor Right */
x += argc ? argv[0] : 1;
break;
case 'D': /* CUB (0x44) - Cursor Left */
x -= argc ? argv[0] : 1;
if(x < 0)
x = 0;
break;
case 'G': /* CHA (0x47) - Cursor Character Absolute */
x = (argc && argv[0] > 0) ? argv[0] - 1 : 0;
break;
case 'J': /* ED (0x4a) - Erase In Page */
savedattr = cucul_get_attr(cv, -1, -1);
cucul_set_attr(cv, im.clearattr);
if(!argc || argv[0] == 0)
{
cucul_draw_line(cv, x, y, width, y, ' ');
cucul_fill_box(cv, 0, y + 1, width - 1, height - 1, ' ');
}
else if(argv[0] == 1)
{
cucul_fill_box(cv, 0, 0, width - 1, y - 1, ' ');
cucul_draw_line(cv, 0, y, x, y, ' ');
}
else if(argv[0] == 2)
//x = y = 0;
cucul_fill_box(cv, 0, 0, width - 1, height - 1, ' ');
cucul_set_attr(cv, savedattr);
break;
case 'K': /* EL (0x4b) - Erase In Line */
if(!argc || argv[0] == 0)
cucul_draw_line(cv, x, y, width, y, ' ');
else if(argv[0] == 1)
cucul_draw_line(cv, 0, y, x, y, ' ');
else if(argv[0] == 2)
if((unsigned int)x < width)
cucul_draw_line(cv, x, y, width - 1, y, ' ');
//x = width;
break;
case 'P': /* DCH (0x50) - Delete Character */
if(!argc || argv[0] == 0)
argv[0] = 1; /* echo -ne 'foobar\r\e[0P\n' */
for(j = 0; (unsigned int)(j + argv[0]) < width; j++)
{
cucul_put_char(cv, j, y,
cucul_get_char(cv, j + argv[0], y));
cucul_put_attr(cv, j, y,
cucul_get_attr(cv, j + argv[0], y));
}
#if 0
savedattr = cucul_get_attr(cv, -1, -1);
cucul_set_attr(cv, im.clearattr);
for( ; (unsigned int)j < width; j++)
cucul_put_char(cv, j, y, ' ');
cucul_set_attr(cv, savedattr);
#endif
case 'X': /* ECH (0x58) - Erase Character */
if(argc && argv[0])
{
savedattr = cucul_get_attr(cv, -1, -1);
cucul_set_attr(cv, im.clearattr);
cucul_draw_line(cv, x, y, x + argv[0] - 1, y, ' ');
cucul_set_attr(cv, savedattr);
}
case 'd': /* VPA (0x64) - Line Position Absolute */
y = (argc && argv[0] > 0) ? argv[0] - 1 : 0;
break;
case 'f': /* HVP (0x66) - Character And Line Position */
x = (argc > 1 && argv[1] > 0) ? argv[1] - 1 : 0;
y = (argc > 0 && argv[0] > 0) ? argv[0] - 1 : 0;
break;
case 'h': /* SM (0x68) - FIXME */
debug("ansi import: set mode %i", argc ? (int)argv[0] : -1);
break;
case 'l': /* RM (0x6c) - FIXME */
debug("ansi import: reset mode %i", argc ? (int)argv[0] : -1);
break;
case 'm': /* SGR (0x6d) - Select Graphic Rendition */
if(argc)
ansi_parse_grcm(cv, &im, argc, argv);
else
ansi_parse_grcm(cv, &im, 1, &dummy);
break;
case 's': /* Private (save cursor position) */
save_x = x;
save_y = y;
break;
case 'u': /* Private (reload cursor position) */
x = save_x;
y = save_y;
break;
default:
debug("ansi import: unknown command \"^[[%.*s\"",
final - param + 1, buffer + i + param);
break;
}
}
/* Parse OSC stuff. */
else if(buffer[i] == '\x1b' && buffer[i + 1] == ']')
{
char *string;
unsigned int command = 0;
unsigned int mode = 2, semicolon, final;
for(semicolon = mode; i + semicolon < size; semicolon++)
{
if(buffer[i + semicolon] < '0' || buffer[i + semicolon] > '9')
break;
command = 10 * command + (buffer[i + semicolon] - '0');
}
if(i + semicolon >= size || buffer[i + semicolon] != ';')
break; /* Invalid Mode */
for(final = semicolon + 1; i + final < size; final++)
if(buffer[i + final] < 0x20)
break;
if(i + final >= size || buffer[i + final] != '\a')
break; /* Not enough data or no bell found */
/* FIXME: XTerm also reacts to <ESC><backslash> and <ST> */
/* FIXME: differenciate between not enough data (try again)
* and invalid data (print shit) */
skip += final;
string = malloc(final - (semicolon + 1) + 1);
memcpy(string, buffer + (semicolon + 1), final - (semicolon + 1));
string[final - (semicolon + 1)] = '\0';
debug("ansi import: got OSC command %i string '%s'", command,
string);
free(string);
}
/* Get the character we’re going to paste */
else if(utf8)
{
unsigned int bytes;
if(i + 6 < size)
ch = cucul_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 = cucul_utf8_to_utf32(tmp, &bytes);
}
if(!bytes)
{
/* If the Unicode is invalid, assume it was latin1. */
ch = buffer[i];
bytes = 1;
}
wch = cucul_utf32_is_fullwidth(ch) ? 2 : 1;
skip += bytes - 1;
}
else
{
ch = cucul_cp437_to_utf32(buffer[i]);
wch = 1;
}
/* Wrap long lines or grow horizontally */
while((unsigned int)x + wch > width)
{
if(growx)
{
savedattr = cucul_get_attr(cv, -1, -1);
cucul_set_attr(cv, im.clearattr);
cucul_set_canvas_size(cv, width = x + wch, height);
cucul_set_attr(cv, savedattr);
}
else
{
x -= width;
y++;
}
}
/* Scroll or grow vertically */
if((unsigned int)y >= height)
{
savedattr = cucul_get_attr(cv, -1, -1);
cucul_set_attr(cv, im.clearattr);
if(growy)
{
cucul_set_canvas_size(cv, width, height = y + 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);
}
cucul_fill_box(cv, 0, height - lines,
cv->width - 1, height - 1, ' ');
y -= lines;
}
cucul_set_attr(cv, savedattr);
}
/* Now paste our character, if any */
if(wch)
{
cucul_put_char(cv, x, y, ch);
x += wch;
}
}
if(growy && (unsigned int)y > height)
{
savedattr = cucul_get_attr(cv, -1, -1);
cucul_set_attr(cv, im.clearattr);
cucul_set_canvas_size(cv, width, height = y);
cucul_set_attr(cv, savedattr);
}
cv->frames[cv->frame].x = x;
cv->frames[cv->frame].y = y;
// if(utf8)
// cucul_set_attr(cv, savedattr);
return i;
}
/* XXX : ANSI loader helper */
static void ansi_parse_grcm(cucul_canvas_t *cv, struct import *im,
unsigned int argc, unsigned int const *argv)
{
static uint8_t const ansi2cucul[] =
{
CUCUL_BLACK, CUCUL_RED, CUCUL_GREEN, CUCUL_BROWN,
CUCUL_BLUE, CUCUL_MAGENTA, CUCUL_CYAN, CUCUL_LIGHTGRAY
};
unsigned int j;
uint8_t efg, ebg; /* Effective (libcucul) 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 = ansi2cucul[argv[j] - 30];
else if(argv[j] >= 40 && argv[j] <= 47)
im->bg = ansi2cucul[argv[j] - 40];
else if(argv[j] >= 90 && argv[j] <= 97)
im->fg = ansi2cucul[argv[j] - 90] + 8;
else if(argv[j] >= 100 && argv[j] <= 107)
im->bg = ansi2cucul[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 = CUCUL_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 == CUCUL_DEFAULT)
efg = CUCUL_WHITE;
}
}
cucul_set_color_ansi(cv, efg, ebg);
}