mirror of
https://github.com/weechat/weechat.git
synced 2026-06-26 12:56:37 +02:00
Sebastien Helleu
467 lines
14 KiB
C
467 lines
14 KiB
C
/*
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* irc-color.c - IRC color decoding/encoding in messages
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*
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* Copyright (C) 2003-2012 Sebastien Helleu <flashcode@flashtux.org>
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*
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* This file is part of WeeChat, the extensible chat client.
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*
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* WeeChat is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* WeeChat is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with WeeChat. If not, see <http://www.gnu.org/licenses/>.
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*/
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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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#include <ctype.h>
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#include "../weechat-plugin.h"
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#include "irc.h"
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#include "irc-color.h"
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#include "irc-config.h"
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char *irc_color_to_weechat[IRC_NUM_COLORS] =
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{ /* 0 */ "white",
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/* 1 */ "black",
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/* 2 */ "blue",
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/* 3 */ "green",
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/* 4 */ "lightred",
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/* 5 */ "red",
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/* 6 */ "magenta",
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/* 7 */ "brown",
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/* 8 */ "yellow",
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/* 9 */ "lightgreen",
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/* 10 */ "cyan",
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/* 11 */ "lightcyan",
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/* 12 */ "lightblue",
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/* 13 */ "lightmagenta",
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/* 14 */ "gray",
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/* 15 */ "white"
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};
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/*
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* Replaces IRC colors by WeeChat colors.
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*
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* If keep_colors == 0: removes any color/style in message otherwise keeps
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* colors.
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*
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* Note: result must be freed after use.
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*/
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char *
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irc_color_decode (const char *string, int keep_colors)
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{
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unsigned char *out, *out2, *ptr_string;
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int out_length, length, out_pos, length_to_add;
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char str_fg[3], str_bg[3], str_color[128], str_key[128], str_to_add[128];
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const char *remapped_color;
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int fg, bg, bold, reverse, italic, underline, rc;
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/*
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* create output string with size of length*2 (with min 128 bytes),
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* this string will be realloc() later with a larger size if needed
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*/
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out_length = (strlen (string) * 2) + 1;
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if (out_length < 128)
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out_length = 128;
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out = malloc (out_length);
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if (!out)
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return NULL;
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/* initialize attributes */
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bold = 0;
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reverse = 0;
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italic = 0;
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underline = 0;
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ptr_string = (unsigned char *)string;
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out[0] = '\0';
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out_pos = 0;
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while (ptr_string && ptr_string[0])
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{
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str_to_add[0] = '\0';
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switch (ptr_string[0])
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{
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case IRC_COLOR_BOLD_CHAR:
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if (keep_colors)
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{
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snprintf (str_to_add, sizeof (str_to_add), "%s",
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weechat_color ((bold) ? "-bold" : "bold"));
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}
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bold ^= 1;
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ptr_string++;
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break;
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case IRC_COLOR_RESET_CHAR:
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if (keep_colors)
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{
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snprintf (str_to_add, sizeof (str_to_add), "%s",
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weechat_color ("reset"));
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}
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bold = 0;
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reverse = 0;
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italic = 0;
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underline = 0;
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ptr_string++;
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break;
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case IRC_COLOR_FIXED_CHAR:
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ptr_string++;
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break;
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case IRC_COLOR_REVERSE_CHAR:
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case IRC_COLOR_REVERSE2_CHAR:
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if (keep_colors)
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{
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snprintf (str_to_add, sizeof (str_to_add), "%s",
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weechat_color ((reverse) ? "-reverse" : "reverse"));
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}
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reverse ^= 1;
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ptr_string++;
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break;
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case IRC_COLOR_ITALIC_CHAR:
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if (keep_colors)
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{
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snprintf (str_to_add, sizeof (str_to_add), "%s",
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weechat_color ((italic) ? "-italic" : "italic"));
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}
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italic ^= 1;
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ptr_string++;
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break;
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case IRC_COLOR_UNDERLINE_CHAR:
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if (keep_colors)
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{
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snprintf (str_to_add, sizeof (str_to_add), "%s",
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weechat_color ((underline) ? "-underline" : "underline"));
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}
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underline ^= 1;
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ptr_string++;
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break;
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case IRC_COLOR_COLOR_CHAR:
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ptr_string++;
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str_fg[0] = '\0';
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str_bg[0] = '\0';
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if (isdigit (ptr_string[0]))
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{
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str_fg[0] = ptr_string[0];
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str_fg[1] = '\0';
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ptr_string++;
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if (isdigit (ptr_string[0]))
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{
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str_fg[1] = ptr_string[0];
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str_fg[2] = '\0';
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ptr_string++;
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}
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}
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if ((ptr_string[0] == ',') && (isdigit (ptr_string[1])))
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{
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ptr_string++;
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str_bg[0] = ptr_string[0];
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str_bg[1] = '\0';
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ptr_string++;
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if (isdigit (ptr_string[0]))
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{
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str_bg[1] = ptr_string[0];
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str_bg[2] = '\0';
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ptr_string++;
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}
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}
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if (keep_colors)
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{
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if (str_fg[0] || str_bg[0])
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{
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fg = -1;
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bg = -1;
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if (str_fg[0])
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{
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rc = sscanf (str_fg, "%d", &fg);
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if ((rc != EOF) && (rc >= 1))
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{
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fg %= IRC_NUM_COLORS;
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}
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}
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if (str_bg[0])
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{
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rc = sscanf (str_bg, "%d", &bg);
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if ((rc != EOF) && (rc >= 1))
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{
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bg %= IRC_NUM_COLORS;
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}
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}
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/* search "fg,bg" in hashtable of remapped colors */
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snprintf (str_key, sizeof (str_key), "%d,%d", fg, bg);
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remapped_color = weechat_hashtable_get (
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irc_config_hashtable_color_mirc_remap,
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str_key);
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if (remapped_color)
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{
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snprintf (str_color, sizeof (str_color),
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"|%s", remapped_color);
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}
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else
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{
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snprintf (str_color, sizeof (str_color),
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"|%s%s%s",
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(fg >= 0) ? irc_color_to_weechat[fg] : "",
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(bg >= 0) ? "," : "",
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(bg >= 0) ? irc_color_to_weechat[bg] : "");
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}
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snprintf (str_to_add, sizeof (str_to_add), "%s",
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weechat_color (str_color));
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}
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else
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{
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snprintf (str_to_add, sizeof (str_to_add), "%s",
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weechat_color ("resetcolor"));
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}
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}
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break;
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default:
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/*
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* we are not on an IRC color code, just copy the UTF-8 char
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* into "str_to_add"
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*/
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length = weechat_utf8_char_size ((char *)ptr_string);
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if (length == 0)
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length = 1;
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memcpy (str_to_add, ptr_string, length);
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str_to_add[length] = '\0';
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ptr_string += length;
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break;
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}
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/* add "str_to_add" (if not empty) to "out" */
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if (str_to_add[0])
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{
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/* if "out" is too small for adding "str_to_add", do a realloc() */
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length_to_add = strlen (str_to_add);
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if (out_pos + length_to_add + 1 > out_length)
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{
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/* try to double the size of "out" */
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out_length *= 2;
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out2 = realloc (out, out_length);
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if (!out2)
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return (char *)out;
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out = out2;
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}
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/* add "str_to_add" to "out" */
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memcpy (out + out_pos, str_to_add, length_to_add + 1);
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out_pos += length_to_add;
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}
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}
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return (char *)out;
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}
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/*
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* Replaces IRC color codes by codes for command line.
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*
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* Note: result must be freed after use.
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*/
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char *
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irc_color_decode_for_user_entry (const char *string)
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{
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unsigned char *out, *ptr_string;
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int out_length, out_pos, length;
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out_length = (strlen (string) * 2) + 1;
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out = malloc (out_length);
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if (!out)
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return NULL;
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ptr_string = (unsigned char *)string;
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out_pos = 0;
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while (ptr_string && ptr_string[0] && (out_pos < out_length - 1))
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{
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switch (ptr_string[0])
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{
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case IRC_COLOR_BOLD_CHAR:
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out[out_pos++] = 0x02;
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ptr_string++;
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break;
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case IRC_COLOR_FIXED_CHAR:
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ptr_string++;
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break;
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case IRC_COLOR_RESET_CHAR:
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out[out_pos++] = 0x0F;
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ptr_string++;
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break;
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case IRC_COLOR_REVERSE_CHAR:
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case IRC_COLOR_REVERSE2_CHAR:
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out[out_pos++] = 0x12;
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ptr_string++;
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break;
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case IRC_COLOR_ITALIC_CHAR:
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out[out_pos++] = 0x1D;
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ptr_string++;
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break;
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case IRC_COLOR_UNDERLINE_CHAR:
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out[out_pos++] = 0x15;
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ptr_string++;
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break;
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case IRC_COLOR_COLOR_CHAR:
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out[out_pos++] = 0x03;
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ptr_string++;
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break;
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default:
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length = weechat_utf8_char_size ((char *)ptr_string);
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if (length == 0)
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length = 1;
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memcpy (out + out_pos, ptr_string, length);
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out_pos += length;
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ptr_string += length;
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}
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}
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out[out_pos] = '\0';
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return (char *)out;
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}
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/*
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* Replaces color codes in command line by IRC color codes.
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*
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* If keep_colors == 0, remove any color/style in message, otherwise keeps
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* colors.
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*
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* Note: result must be freed after use.
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*/
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char *
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irc_color_encode (const char *string, int keep_colors)
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{
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unsigned char *out, *ptr_string;
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int out_length, out_pos, length;
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out_length = (strlen (string) * 2) + 1;
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out = malloc (out_length);
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if (!out)
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return NULL;
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ptr_string = (unsigned char *)string;
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out_pos = 0;
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while (ptr_string && ptr_string[0] && (out_pos < out_length - 1))
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{
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switch (ptr_string[0])
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{
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case 0x02: /* ^B */
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if (keep_colors)
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out[out_pos++] = IRC_COLOR_BOLD_CHAR;
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ptr_string++;
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break;
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case 0x03: /* ^C */
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if (keep_colors)
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out[out_pos++] = IRC_COLOR_COLOR_CHAR;
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ptr_string++;
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if (isdigit (ptr_string[0]))
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{
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if (keep_colors)
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out[out_pos++] = ptr_string[0];
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ptr_string++;
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if (isdigit (ptr_string[0]))
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{
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if (keep_colors)
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out[out_pos++] = ptr_string[0];
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ptr_string++;
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}
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}
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if (ptr_string[0] == ',')
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{
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if (keep_colors)
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out[out_pos++] = ',';
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ptr_string++;
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if (isdigit (ptr_string[0]))
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{
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if (keep_colors)
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out[out_pos++] = ptr_string[0];
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ptr_string++;
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if (isdigit (ptr_string[0]))
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{
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if (keep_colors)
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out[out_pos++] = ptr_string[0];
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ptr_string++;
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}
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}
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}
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break;
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case 0x0F: /* ^O */
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if (keep_colors)
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out[out_pos++] = IRC_COLOR_RESET_CHAR;
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ptr_string++;
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break;
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case 0x12: /* ^R */
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if (keep_colors)
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out[out_pos++] = IRC_COLOR_REVERSE_CHAR;
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ptr_string++;
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break;
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case 0x15: /* ^U */
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if (keep_colors)
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out[out_pos++] = IRC_COLOR_UNDERLINE_CHAR;
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ptr_string++;
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break;
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default:
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length = weechat_utf8_char_size ((char *)ptr_string);
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if (length == 0)
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length = 1;
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memcpy (out + out_pos, ptr_string, length);
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out_pos += length;
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ptr_string += length;
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}
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}
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out[out_pos] = '\0';
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return (char *)out;
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}
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/*
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* Callback for modifiers "irc_color_decode" and "irc_color_encode".
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*
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* This modifier can be used by other plugins to decode/encode IRC colors in
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* messages.
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*/
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char *
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irc_color_modifier_cb (void *data, const char *modifier,
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const char *modifier_data, const char *string)
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{
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int keep_colors;
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/* make C compiler happy */
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(void) data;
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keep_colors = (modifier_data && (strcmp (modifier_data, "1") == 0)) ? 1 : 0;
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if (strcmp (modifier, "irc_color_decode") == 0)
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return irc_color_decode (string, keep_colors);
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if (strcmp (modifier, "irc_color_encode") == 0)
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return irc_color_encode (string, keep_colors);
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/* unknown modifier */
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return NULL;
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}
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/*
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* Returns color name for tags (replace "," by ":").
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*
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* Note: result must be freed after use.
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*/
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char *
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irc_color_for_tags (const char *color)
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{
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if (!color)
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return NULL;
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return weechat_string_replace (color, ",", ":");
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}
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