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weechat/src/gui/gui-color.c
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Sebastien Helleu 600ee3ddf3 core: add search of regular expression in buffer, don't reset search type on a new search, select where to search (messages/prefixes) 
Key changed in search context:
- ctrl+"r": switch search type: string/regex

New keys in search context:
- alt+"c": case (in)sensitive search
- tab: search in messages/prefixes/both
2013-08-17 11:51:50 +02:00

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/*
* gui-color.c - color functions (used by all GUI)
*
* Copyright (C) 2003-2013 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/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
#include <time.h>
#include <ctype.h>
#include "../core/weechat.h"
#include "../core/wee-config.h"
#include "../core/wee-hashtable.h"
#include "../core/wee-list.h"
#include "../core/wee-string.h"
#include "../core/wee-utf8.h"
#include "../plugins/plugin.h"
#include "gui-color.h"
#include "gui-chat.h"
#include "gui-window.h"
struct t_gui_color *gui_color[GUI_COLOR_NUM_COLORS]; /* GUI colors */
/* palette colors and aliases */
struct t_hashtable *gui_color_hash_palette_color = NULL;
struct t_hashtable *gui_color_hash_palette_alias = NULL;
struct t_weelist *gui_color_list_with_alias = NULL;
/*
* Searches for a color with configuration option name.
*
* Returns color string, NULL if not found.
*/
const char *
gui_color_search_config (const char *color_name)
{
struct t_config_option *ptr_option;
if (color_name)
{
for (ptr_option = weechat_config_section_color->options;
ptr_option; ptr_option = ptr_option->next_option)
{
if (string_strcasecmp (ptr_option->name, color_name) == 0)
{
if (ptr_option->min < 0)
{
return gui_color_get_custom (
gui_color_get_name (CONFIG_COLOR(ptr_option)));
}
return GUI_COLOR(ptr_option->min);
}
}
}
/* color not found */
return NULL;
}
/*
* Returns flag for attribute char of a color.
*
* Returns 0 if char is unknown.
*/
int
gui_color_attr_get_flag (char c)
{
if (c == GUI_COLOR_EXTENDED_BOLD_CHAR)
return GUI_COLOR_EXTENDED_BOLD_FLAG;
if (c == GUI_COLOR_EXTENDED_REVERSE_CHAR)
return GUI_COLOR_EXTENDED_REVERSE_FLAG;
if (c == GUI_COLOR_EXTENDED_ITALIC_CHAR)
return GUI_COLOR_EXTENDED_ITALIC_FLAG;
if (c == GUI_COLOR_EXTENDED_UNDERLINE_CHAR)
return GUI_COLOR_EXTENDED_UNDERLINE_FLAG;
if (c == GUI_COLOR_EXTENDED_KEEPATTR_CHAR)
return GUI_COLOR_EXTENDED_KEEPATTR_FLAG;
return 0;
}
/*
* Builds string with attributes of color.
*
* The str_attr must be at least 6 bytes long (5 for attributes + final '\0').
*/
void
gui_color_attr_build_string (int color, char *str_attr)
{
int i;
i = 0;
if (color & GUI_COLOR_EXTENDED_BOLD_FLAG)
str_attr[i++] = GUI_COLOR_EXTENDED_BOLD_CHAR;
if (color & GUI_COLOR_EXTENDED_REVERSE_FLAG)
str_attr[i++] = GUI_COLOR_EXTENDED_REVERSE_CHAR;
if (color & GUI_COLOR_EXTENDED_ITALIC_FLAG)
str_attr[i++] = GUI_COLOR_EXTENDED_ITALIC_CHAR;
if (color & GUI_COLOR_EXTENDED_UNDERLINE_FLAG)
str_attr[i++] = GUI_COLOR_EXTENDED_UNDERLINE_CHAR;
if (color & GUI_COLOR_EXTENDED_KEEPATTR_FLAG)
str_attr[i++] = GUI_COLOR_EXTENDED_KEEPATTR_CHAR;
str_attr[i] = '\0';
}
/*
* Gets a custom color with a name.
*/
const char *
gui_color_get_custom (const char *color_name)
{
int fg, bg, fg_term, bg_term, term_color;
static char color[32][32];
static int index_color = 0;
char color_fg[32], color_bg[32];
char *pos_delim, *str_fg, *pos_bg, *error, *color_attr;
const char *ptr_color_name;
/* attribute or other color name (GUI dependent) */
index_color = (index_color + 1) % 32;
color[index_color][0] = '\0';
if (!color_name || !color_name[0])
return color[index_color];
if (string_strcasecmp (color_name, "reset") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c",
GUI_COLOR_RESET_CHAR);
}
else if (string_strcasecmp (color_name, "resetcolor") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c",
GUI_COLOR_COLOR_CHAR,
GUI_COLOR_RESET_CHAR);
}
else if (string_strcasecmp (color_name, "emphasis") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c",
GUI_COLOR_COLOR_CHAR,
GUI_COLOR_EMPHASIS_CHAR);
}
else if (string_strcasecmp (color_name, "bold") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c",
GUI_COLOR_SET_ATTR_CHAR,
GUI_COLOR_ATTR_BOLD_CHAR);
}
else if (string_strcasecmp (color_name, "-bold") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c",
GUI_COLOR_REMOVE_ATTR_CHAR,
GUI_COLOR_ATTR_BOLD_CHAR);
}
else if (string_strcasecmp (color_name, "reverse") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c",
GUI_COLOR_SET_ATTR_CHAR,
GUI_COLOR_ATTR_REVERSE_CHAR);
}
else if (string_strcasecmp (color_name, "-reverse") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c",
GUI_COLOR_REMOVE_ATTR_CHAR,
GUI_COLOR_ATTR_REVERSE_CHAR);
}
else if (string_strcasecmp (color_name, "italic") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c",
GUI_COLOR_SET_ATTR_CHAR,
GUI_COLOR_ATTR_ITALIC_CHAR);
}
else if (string_strcasecmp (color_name, "-italic") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c",
GUI_COLOR_REMOVE_ATTR_CHAR,
GUI_COLOR_ATTR_ITALIC_CHAR);
}
else if (string_strcasecmp (color_name, "underline") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c",
GUI_COLOR_SET_ATTR_CHAR,
GUI_COLOR_ATTR_UNDERLINE_CHAR);
}
else if (string_strcasecmp (color_name, "-underline") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c",
GUI_COLOR_REMOVE_ATTR_CHAR,
GUI_COLOR_ATTR_UNDERLINE_CHAR);
}
else if (string_strcasecmp (color_name, "bar_fg") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c%c",
GUI_COLOR_COLOR_CHAR,
GUI_COLOR_BAR_CHAR,
GUI_COLOR_BAR_FG_CHAR);
}
else if (string_strcasecmp (color_name, "bar_delim") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c%c",
GUI_COLOR_COLOR_CHAR,
GUI_COLOR_BAR_CHAR,
GUI_COLOR_BAR_DELIM_CHAR);
}
else if (string_strcasecmp (color_name, "bar_bg") == 0)
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c%c",
GUI_COLOR_COLOR_CHAR,
GUI_COLOR_BAR_CHAR,
GUI_COLOR_BAR_BG_CHAR);
}
else
{
/* custom color name (GUI dependent) */
fg_term = -1;
bg_term = -1;
fg = -1;
bg = -1;
color_attr = NULL;
color_fg[0] = '\0';
color_bg[0] = '\0';
/* read extra attributes (bold, ..) */
ptr_color_name = color_name;
while (gui_color_attr_get_flag (ptr_color_name[0]) > 0)
{
ptr_color_name++;
}
if (ptr_color_name != color_name)
{
color_attr = string_strndup (color_name,
ptr_color_name - color_name);
}
pos_delim = strchr (ptr_color_name, ',');
if (!pos_delim)
pos_delim = strchr (ptr_color_name, ':');
if (pos_delim)
{
if (pos_delim == ptr_color_name)
str_fg = NULL;
else
str_fg = string_strndup (ptr_color_name,
pos_delim - ptr_color_name);
pos_bg = pos_delim + 1;
}
else
{
str_fg = strdup (ptr_color_name);
pos_bg = NULL;
}
if (str_fg)
{
fg_term = gui_color_palette_get_alias (str_fg);
if (fg_term < 0)
{
error = NULL;
term_color = (int)strtol (str_fg, &error, 10);
if (error && !error[0])
{
fg_term = term_color;
if (fg_term < 0)
fg_term = 0;
else if (fg_term > GUI_COLOR_EXTENDED_MAX)
fg_term = GUI_COLOR_EXTENDED_MAX;
}
else
fg = gui_color_search (str_fg);
}
}
if (pos_bg)
{
bg_term = gui_color_palette_get_alias (pos_bg);
if (bg_term < 0)
{
error = NULL;
term_color = (int)strtol (pos_bg, &error, 10);
if (error && !error[0])
{
bg_term = term_color;
if (bg_term < 0)
bg_term = 0;
else if (bg_term > GUI_COLOR_EXTENDED_MAX)
bg_term = GUI_COLOR_EXTENDED_MAX;
}
else
bg = gui_color_search (pos_bg);
}
}
if (fg_term >= 0)
{
snprintf (color_fg, sizeof (color_fg), "%c%s%05d",
GUI_COLOR_EXTENDED_CHAR,
(color_attr) ? color_attr : "",
fg_term);
}
else if (fg >= 0)
{
snprintf (color_fg, sizeof (color_fg), "%s%02d",
(color_attr) ? color_attr : "",
fg);
}
if (bg_term >= 0)
{
snprintf (color_bg, sizeof (color_bg), "%c%05d",
GUI_COLOR_EXTENDED_CHAR,
bg_term);
}
else if (bg >= 0)
{
snprintf (color_bg, sizeof (color_bg), "%02d",
bg);
}
if (color_fg[0] && color_bg[0])
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c%s,%s",
GUI_COLOR_COLOR_CHAR,
GUI_COLOR_FG_BG_CHAR,
color_fg,
color_bg);
}
else if (color_fg[0])
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c%s",
GUI_COLOR_COLOR_CHAR,
GUI_COLOR_FG_CHAR,
color_fg);
}
else if (color_bg[0])
{
snprintf (color[index_color], sizeof (color[index_color]),
"%c%c%s",
GUI_COLOR_COLOR_CHAR,
GUI_COLOR_BG_CHAR,
color_bg);
}
if (color_attr)
free (color_attr);
if (str_fg)
free (str_fg);
}
return color[index_color];
}
/*
* Removes WeeChat color codes from a message.
*
* If replacement is not NULL and not empty, it is used to replace color codes
* by first char of replacement (and next chars in string are NOT removed).
* If replacement is NULL or empty, color codes are removed, with following
* chars if they are related to color code.
*
* Note: result must be freed after use.
*/
char *
gui_color_decode (const char *string, const char *replacement)
{
const unsigned char *ptr_string;
unsigned char *out;
int out_length, out_pos, length;
if (!string)
return NULL;
out_length = (strlen ((char *)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 GUI_COLOR_COLOR_CHAR:
ptr_string++;
switch (ptr_string[0])
{
case GUI_COLOR_FG_CHAR:
ptr_string++;
if (ptr_string[0] == GUI_COLOR_EXTENDED_CHAR)
{
ptr_string++;
while (gui_color_attr_get_flag (ptr_string[0]) > 0)
{
ptr_string++;
}
if (ptr_string[0] && ptr_string[1] && ptr_string[2]
&& ptr_string[3] && ptr_string[4])
{
ptr_string += 5;
}
}
else
{
while (gui_color_attr_get_flag (ptr_string[0]) > 0)
{
ptr_string++;
}
if (ptr_string[0] && ptr_string[1])
ptr_string += 2;
}
break;
case GUI_COLOR_BG_CHAR:
ptr_string++;
if (ptr_string[0] == GUI_COLOR_EXTENDED_CHAR)
{
ptr_string++;
if (ptr_string[0] && ptr_string[1] && ptr_string[2]
&& ptr_string[3] && ptr_string[4])
{
ptr_string += 5;
}
}
else
{
if (ptr_string[0] && ptr_string[1])
ptr_string += 2;
}
break;
case GUI_COLOR_FG_BG_CHAR:
ptr_string++;
if (ptr_string[0] == GUI_COLOR_EXTENDED_CHAR)
{
ptr_string++;
while (gui_color_attr_get_flag (ptr_string[0]) > 0)
{
ptr_string++;
}
if (ptr_string[0] && ptr_string[1] && ptr_string[2]
&& ptr_string[3] && ptr_string[4])
{
ptr_string += 5;
}
}
else
{
while (gui_color_attr_get_flag (ptr_string[0]) > 0)
{
ptr_string++;
}
if (ptr_string[0] && ptr_string[1])
ptr_string += 2;
}
if (ptr_string[0] == ',')
{
if (ptr_string[1] == GUI_COLOR_EXTENDED_CHAR)
{
if (ptr_string[2] && ptr_string[3]
&& ptr_string[4] && ptr_string[5]
&& ptr_string[6])
{
ptr_string += 7;
}
}
else
{
if (ptr_string[1] && ptr_string[2])
ptr_string += 3;
}
}
break;
case GUI_COLOR_EXTENDED_CHAR:
if ((isdigit (ptr_string[1])) && (isdigit (ptr_string[2]))
&& (isdigit (ptr_string[3])) && (isdigit (ptr_string[4]))
&& (isdigit (ptr_string[5])))
ptr_string += 6;
break;
case GUI_COLOR_EMPHASIS_CHAR:
ptr_string++;
break;
case GUI_COLOR_BAR_CHAR:
ptr_string++;
switch (ptr_string[0])
{
case GUI_COLOR_BAR_FG_CHAR:
case GUI_COLOR_BAR_BG_CHAR:
case GUI_COLOR_BAR_DELIM_CHAR:
case GUI_COLOR_BAR_START_INPUT_CHAR:
case GUI_COLOR_BAR_START_INPUT_HIDDEN_CHAR:
case GUI_COLOR_BAR_MOVE_CURSOR_CHAR:
case GUI_COLOR_BAR_START_ITEM:
case GUI_COLOR_BAR_START_LINE_ITEM:
ptr_string++;
break;
}
break;
case GUI_COLOR_RESET_CHAR:
ptr_string++;
break;
default:
if (isdigit (ptr_string[0]) && isdigit (ptr_string[1]))
ptr_string += 2;
break;
}
if (replacement && replacement[0])
{
out[out_pos] = replacement[0];
out_pos++;
}
break;
case GUI_COLOR_SET_ATTR_CHAR:
case GUI_COLOR_REMOVE_ATTR_CHAR:
ptr_string++;
if (ptr_string[0])
ptr_string++;
if (replacement && replacement[0])
{
out[out_pos] = replacement[0];
out_pos++;
}
break;
case GUI_COLOR_RESET_CHAR:
ptr_string++;
if (replacement && replacement[0])
{
out[out_pos] = replacement[0];
out_pos++;
}
break;
default:
length = utf8_char_size ((char *)ptr_string);
if (length == 0)
length = 1;
memcpy (out + out_pos, ptr_string, length);
out_pos += length;
ptr_string += length;
break;
}
}
out[out_pos] = '\0';
return (char *)out;
}
/*
* Emphasizes a string or regular expression in a string (which can contain
* colors).
*
* Argument "case_sensitive" is used only for "search", if the "regex" is NULL.
*
* Returns string with the search string/regex emphasized, NULL if error.
*
* Note: result must be freed after use.
*/
char *
gui_color_emphasize (const char *string,
const char *search, int case_sensitive,
regex_t *regex)
{
regmatch_t regex_match;
char *result, *result2, *string_no_color, *pos;
const char *ptr_string, *ptr_no_color, *color_emphasis;
int rc, length_search, length_emphasis, length_result;
int pos1, pos2, real_pos1, real_pos2, count_emphasis;
if (!string && !regex)
return NULL;
color_emphasis = gui_color_get_custom ("emphasis");
if (!color_emphasis)
return NULL;
length_emphasis = strlen (color_emphasis);
/*
* allocate space for 8 emphasized strings (8 before + 8 after = 16);
* more space will be allocated later (if there are more than 8 emphasized
* strings)
*/
length_result = strlen (string) + (length_emphasis * 2 * 8) + 1;
result = malloc (length_result);
if (!result)
return NULL;
result[0] = '\0';
/*
* build a string without color codes to search in this one (then with the
* position of text found, we will retrieve position in original string,
* which can contain color codes)
*/
string_no_color = gui_color_decode (string, NULL);
if (!string_no_color)
{
free (result);
return NULL;
}
length_search = (search) ? strlen (search) : 0;
ptr_string = string;
ptr_no_color = string_no_color;
count_emphasis = 0;
while (ptr_no_color && ptr_no_color[0])
{
if (regex)
{
/* search next match using the regex */
regex_match.rm_so = -1;
rc = regexec (regex, ptr_no_color, 1, &regex_match, 0);
/*
* no match found: exit the loop (if rm_no == 0, it is an empty
* match at beginning of string: we consider there is no match, to
* prevent an infinite loop)
*/
if ((rc != 0) || (regex_match.rm_so < 0) || (regex_match.rm_eo <= 0))
{
strcat (result, ptr_string);
break;
}
pos1 = regex_match.rm_so;
pos2 = regex_match.rm_eo;
}
else
{
/* search next match in the string */
if (case_sensitive)
pos = strstr (ptr_no_color, search);
else
pos = string_strcasestr (ptr_no_color, search);
if (!pos)
{
strcat (result, ptr_string);
break;
}
pos1 = pos - ptr_no_color;
pos2 = pos1 + length_search;
if (pos2 <= 0)
{
strcat (result, ptr_string);
break;
}
}
/*
* find the position of match in the original string (which can contain
* color codes)
*/
real_pos1 = gui_chat_string_real_pos (ptr_string,
gui_chat_string_pos (ptr_no_color, pos1));
real_pos2 = gui_chat_string_real_pos (ptr_string,
gui_chat_string_pos (ptr_no_color, pos2));
/*
* concatenate following strings to the result:
* - beginning of string (before match)
* - emphasis color code
* - the matching string
* - emphasis color code
*/
if (real_pos1 > 0)
strncat (result, ptr_string, real_pos1);
strcat (result, color_emphasis);
strncat (result, ptr_string + real_pos1, real_pos2 - real_pos1);
strcat (result, color_emphasis);
/* restart next loop after the matching string */
ptr_string += real_pos2;
ptr_no_color += pos2;
/* check if we should allocate more space for emphasis color codes */
count_emphasis++;
if (count_emphasis == 8)
{
/* allocate more space for emphasis color codes */
length_result += (length_emphasis * 2 * 8);
result2 = realloc (result, length_result);
if (!result2)
{
free (result);
return NULL;
}
result = result2;
count_emphasis = 0;
}
}
free (string_no_color);
return result;
}
/*
* Frees a color.
*/
void
gui_color_free (struct t_gui_color *color)
{
if (color)
{
if (color->string)
free (color->string);
free (color);
}
}
/*
* Callback called to free value in hashtable when item in hashtable is removed.
*/
void
gui_color_palette_free_value_cb (struct t_hashtable *hashtable,
const void *key, void *value)
{
struct t_gui_color_palette *color_palette;
/* make C compiler happy */
(void) hashtable;
(void) key;
color_palette = (struct t_gui_color_palette *)value;
if (color_palette)
gui_color_palette_free (color_palette);
}
/*
* Allocates hashtables and lists for palette.
*/
void
gui_color_palette_alloc_structs ()
{
if (!gui_color_hash_palette_color)
{
gui_color_hash_palette_color = hashtable_new (32,
WEECHAT_HASHTABLE_STRING,
WEECHAT_HASHTABLE_POINTER,
NULL,
NULL);
gui_color_hash_palette_color->callback_free_value = &gui_color_palette_free_value_cb;
}
if (!gui_color_hash_palette_alias)
{
gui_color_hash_palette_alias = hashtable_new (32,
WEECHAT_HASHTABLE_STRING,
WEECHAT_HASHTABLE_INTEGER,
NULL,
NULL);
}
if (!gui_color_list_with_alias)
{
gui_color_list_with_alias = weelist_new ();
}
}
/*
* Gets color pair number with alias.
*
* Returns -1 if alias is not found.
*/
int
gui_color_palette_get_alias (const char *alias)
{
int *ptr_number;
if (gui_color_hash_palette_alias)
{
ptr_number = hashtable_get (gui_color_hash_palette_alias, alias);
if (ptr_number)
return *ptr_number;
}
/* alias not found */
return -1;
}
/*
* Gets a color palette with number.
*/
struct t_gui_color_palette *
gui_color_palette_get (int number)
{
char str_number[64];
snprintf (str_number, sizeof (str_number), "%d", number);
return hashtable_get (gui_color_hash_palette_color,
str_number);
}
/*
* Adds a color in palette.
*/
void
gui_color_palette_add (int number, const char *value)
{
struct t_gui_color_palette *new_color_palette;
char str_number[64];
gui_color_palette_alloc_structs ();
new_color_palette = gui_color_palette_new (number, value);
if (!new_color_palette)
return;
snprintf (str_number, sizeof (str_number), "%d", number);
hashtable_set (gui_color_hash_palette_color,
str_number, new_color_palette);
gui_color_palette_build_aliases ();
if (gui_init_ok)
gui_color_buffer_display ();
}
/*
* Removes a color in palette.
*/
void
gui_color_palette_remove (int number)
{
struct t_gui_color_palette *ptr_color_palette;
char str_number[64];
gui_color_palette_alloc_structs ();
snprintf (str_number, sizeof (str_number), "%d", number);
ptr_color_palette = hashtable_get (gui_color_hash_palette_color,
str_number);
if (ptr_color_palette)
{
hashtable_remove (gui_color_hash_palette_color, str_number);
gui_color_palette_build_aliases ();
if (gui_init_ok)
gui_color_buffer_display ();
}
}
/*
* Frees hashtables and lists for palette.
*/
void
gui_color_palette_free_structs ()
{
if (gui_color_hash_palette_color)
hashtable_free (gui_color_hash_palette_color);
if (gui_color_hash_palette_alias)
hashtable_free (gui_color_hash_palette_alias);
if (gui_color_list_with_alias)
weelist_free (gui_color_list_with_alias);
}
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