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d24f6e9e172c2917841b1e4cf02a84cacd2bd482
weechat/src/plugins/irc/irc-color.c
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Sebastien Helleu d24f6e9e17 Update copyright dates
2011-01-01 18:06:29 +01:00

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/*
* Copyright (C) 2003-2011 Sebastien Helleu <flashcode@flashtux.org>
*
* This file is part of WeeChat, the extensible chat client.
*
* WeeChat is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* WeeChat is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WeeChat. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* irc-color.c: IRC color decoding/encoding in messages
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "../weechat-plugin.h"
#include "irc.h"
#include "irc-color.h"
#include "irc-config.h"
char *irc_color_to_weechat[IRC_NUM_COLORS] =
{ /* 0 */ "white",
/* 1 */ "black",
/* 2 */ "blue",
/* 3 */ "green",
/* 4 */ "lightred",
/* 5 */ "red",
/* 6 */ "magenta",
/* 7 */ "brown",
/* 8 */ "yellow",
/* 9 */ "lightgreen",
/* 10 */ "cyan",
/* 11 */ "lightcyan",
/* 12 */ "lightblue",
/* 13 */ "lightmagenta",
/* 14 */ "default",
/* 15 */ "white"
};
/*
* irc_color_decode: replace IRC colors by WeeChat colors
* if keep_colors == 0: remove any color/style in message
* otherwise: keep colors
* Note: after use, string returned has to be free()
*/
char *
irc_color_decode (const char *string, int keep_colors)
{
unsigned char *out, *ptr_string;
int out_length, length, out_pos;
char str_fg[3], str_bg[3], str_color[128];
int fg, bg, bold, reverse, italic, underline;
out_length = (strlen (string) * 2) + 1;
out = malloc (out_length);
if (!out)
return NULL;
bold = 0;
reverse = 0;
italic = 0;
underline = 0;
ptr_string = (unsigned char *)string;
out[0] = '\0';
while (ptr_string && ptr_string[0])
{
switch (ptr_string[0])
{
case IRC_COLOR_BOLD_CHAR:
if (keep_colors)
strcat ((char *)out,
weechat_color((bold) ? "-bold" : "bold"));
bold ^= 1;
ptr_string++;
break;
case IRC_COLOR_RESET_CHAR:
if (keep_colors)
strcat ((char *)out, weechat_color("reset"));
bold = 0;
reverse = 0;
italic = 0;
underline = 0;
ptr_string++;
break;
case IRC_COLOR_FIXED_CHAR:
ptr_string++;
break;
case IRC_COLOR_REVERSE_CHAR:
case IRC_COLOR_REVERSE2_CHAR:
if (keep_colors)
strcat ((char *)out,
weechat_color((reverse) ? "-reverse" : "reverse"));
reverse ^= 1;
ptr_string++;
break;
case IRC_COLOR_ITALIC_CHAR:
if (keep_colors)
strcat ((char *)out,
weechat_color((italic) ? "-italic" : "italic"));
italic ^= 1;
ptr_string++;
break;
case IRC_COLOR_UNDERLINE_CHAR:
if (keep_colors)
strcat ((char *)out,
weechat_color((underline) ? "-underline" : "underline"));
underline ^= 1;
ptr_string++;
break;
case IRC_COLOR_COLOR_CHAR:
ptr_string++;
str_fg[0] = '\0';
str_bg[0] = '\0';
if (isdigit (ptr_string[0]))
{
str_fg[0] = ptr_string[0];
str_fg[1] = '\0';
ptr_string++;
if (isdigit (ptr_string[0]))
{
str_fg[1] = ptr_string[0];
str_fg[2] = '\0';
ptr_string++;
}
}
if (ptr_string[0] == ',')
{
ptr_string++;
if (isdigit (ptr_string[0]))
{
str_bg[0] = ptr_string[0];
str_bg[1] = '\0';
ptr_string++;
if (isdigit (ptr_string[0]))
{
str_bg[1] = ptr_string[0];
str_bg[2] = '\0';
ptr_string++;
}
}
}
if (keep_colors)
{
if (str_fg[0] || str_bg[0])
{
fg = -1;
bg = -1;
if (str_fg[0])
{
sscanf (str_fg, "%d", &fg);
fg %= IRC_NUM_COLORS;
}
if (str_bg[0])
{
sscanf (str_bg, "%d", &bg);
bg %= IRC_NUM_COLORS;
}
snprintf (str_color, sizeof (str_color),
"%s%s%s",
(fg >= 0) ? irc_color_to_weechat[fg] : "",
(bg >= 0) ? "," : "",
(bg >= 0) ? irc_color_to_weechat[bg] : "");
strcat ((char *)out, weechat_color(str_color));
}
else
strcat ((char *)out, weechat_color("reset"));
}
break;
default:
length = weechat_utf8_char_size ((char *)ptr_string);
if (length == 0)
length = 1;
out_pos = strlen ((char *)out);
memcpy (out + out_pos, ptr_string, length);
out[out_pos + length] = '\0';
ptr_string += length;
break;
}
}
return (char *)out;
}
/*
* irc_color_decode_for_user_entry: parses a message (coming from IRC server),
* and replaces colors/bold/.. by ^C, ^B, ..
* Note: after use, string returned has to be free()
*/
char *
irc_color_decode_for_user_entry (const char *string)
{
unsigned char *out, *ptr_string;
int out_length, out_pos, length;
out_length = (strlen (string) * 2) + 1;
out = malloc (out_length);
if (!out)
return NULL;
ptr_string = (unsigned char *)string;
out_pos = 0;
while (ptr_string && ptr_string[0] && (out_pos < out_length - 1))
{
switch (ptr_string[0])
{
case IRC_COLOR_BOLD_CHAR:
out[out_pos++] = 0x02;
ptr_string++;
break;
case IRC_COLOR_FIXED_CHAR:
ptr_string++;
break;
case IRC_COLOR_RESET_CHAR:
out[out_pos++] = 0x0F;
ptr_string++;
break;
case IRC_COLOR_REVERSE_CHAR:
case IRC_COLOR_REVERSE2_CHAR:
out[out_pos++] = 0x12;
ptr_string++;
break;
case IRC_COLOR_ITALIC_CHAR:
out[out_pos++] = 0x1D;
ptr_string++;
break;
case IRC_COLOR_UNDERLINE_CHAR:
out[out_pos++] = 0x15;
ptr_string++;
break;
case IRC_COLOR_COLOR_CHAR:
out[out_pos++] = 0x03;
ptr_string++;
break;
default:
length = weechat_utf8_char_size ((char *)ptr_string);
if (length == 0)
length = 1;
memcpy (out + out_pos, ptr_string, length);
out_pos += length;
ptr_string += length;
}
}
out[out_pos] = '\0';
return (char *)out;
}
/*
* irc_color_encode: parses a message (entered by user), and
* encode special chars (^Cb, ^Cc, ..) in IRC colors
* if keep_colors == 0: remove any color/style in message
* otherwise: keep colors
* Note: after use, string returned has to be free()
*/
char *
irc_color_encode (const char *string, int keep_colors)
{
unsigned char *out, *ptr_string;
int out_length, out_pos, length;
out_length = (strlen (string) * 2) + 1;
out = malloc (out_length);
if (!out)
return NULL;
ptr_string = (unsigned char *)string;
out_pos = 0;
while (ptr_string && ptr_string[0] && (out_pos < out_length - 1))
{
switch (ptr_string[0])
{
case 0x02: /* ^B */
if (keep_colors)
out[out_pos++] = IRC_COLOR_BOLD_CHAR;
ptr_string++;
break;
case 0x03: /* ^C */
if (keep_colors)
out[out_pos++] = IRC_COLOR_COLOR_CHAR;
ptr_string++;
if (isdigit (ptr_string[0]))
{
if (keep_colors)
out[out_pos++] = ptr_string[0];
ptr_string++;
if (isdigit (ptr_string[0]))
{
if (keep_colors)
out[out_pos++] = ptr_string[0];
ptr_string++;
}
}
if (ptr_string[0] == ',')
{
if (keep_colors)
out[out_pos++] = ',';
ptr_string++;
if (isdigit (ptr_string[0]))
{
if (keep_colors)
out[out_pos++] = ptr_string[0];
ptr_string++;
if (isdigit (ptr_string[0]))
{
if (keep_colors)
out[out_pos++] = ptr_string[0];
ptr_string++;
}
}
}
break;
case 0x0F: /* ^O */
if (keep_colors)
out[out_pos++] = IRC_COLOR_RESET_CHAR;
ptr_string++;
break;
case 0x12: /* ^R */
if (keep_colors)
out[out_pos++] = IRC_COLOR_REVERSE_CHAR;
ptr_string++;
break;
case 0x15: /* ^U */
if (keep_colors)
out[out_pos++] = IRC_COLOR_UNDERLINE_CHAR;
ptr_string++;
break;
default:
length = weechat_utf8_char_size ((char *)ptr_string);
if (length == 0)
length = 1;
memcpy (out + out_pos, ptr_string, length);
out_pos += length;
ptr_string += length;
}
}
out[out_pos] = '\0';
return (char *)out;
}
/*
* irc_color_modifier_cb: callback for modifiers "irc_color_decode" and
* "irc_color_encode"
* This modifier can be used by other plugins to
* decode/encode IRC colors in messages
*/
char *
irc_color_modifier_cb (void *data, const char *modifier,
const char *modifier_data, const char *string)
{
int keep_colors;
/* make C compiler happy */
(void) data;
keep_colors = (modifier_data && (strcmp (modifier_data, "1") == 0)) ? 1 : 0;
if (strcmp (modifier, "irc_color_decode") == 0)
return irc_color_decode (string, keep_colors);
if (strcmp (modifier, "irc_color_encode") == 0)
return irc_color_encode (string, keep_colors);
/* unknown modifier */
return NULL;
}
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