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#include <stdint.h>
#include <stdlib.h>
#include <curses.h>
#include "chat.h"
int utf8_char_int (const char *string);
const char *utf8_next_char (const char *string);
void gui_nick_hash_djb2_64 (const char *nickname, uint64_t *color_64);
int gui_nick_hash_color (const char *nickname);
enum Color bx_weechat_nick_colors(const char *nick);
int
utf8_char_int (const char *string)
{
const unsigned char *ptr_string;
if (!string)
return 0;
ptr_string = (unsigned char *)string;
/* UTF-8, 2 bytes: 110vvvvv 10vvvvvv */
if ((ptr_string[0] & 0xE0) == 0xC0)
{
if (!ptr_string[1])
return (int)(ptr_string[0] & 0x1F);
return ((int)(ptr_string[0] & 0x1F) << 6) +
((int)(ptr_string[1] & 0x3F));
}
/* UTF-8, 3 bytes: 1110vvvv 10vvvvvv 10vvvvvv */
else if ((ptr_string[0] & 0xF0) == 0xE0)
{
if (!ptr_string[1])
return (int)(ptr_string[0] & 0x0F);
if (!ptr_string[2])
return (((int)(ptr_string[0] & 0x0F)) << 6) +
((int)(ptr_string[1] & 0x3F));
return (((int)(ptr_string[0] & 0x0F)) << 12) +
(((int)(ptr_string[1] & 0x3F)) << 6) +
((int)(ptr_string[2] & 0x3F));
}
/* UTF-8, 4 bytes: 11110vvv 10vvvvvv 10vvvvvv 10vvvvvv */
else if ((ptr_string[0] & 0xF8) == 0xF0)
{
if (!ptr_string[1])
return (int)(ptr_string[0] & 0x07);
if (!ptr_string[2])
return (((int)(ptr_string[0] & 0x07)) << 6) +
((int)(ptr_string[1] & 0x3F));
if (!ptr_string[3])
return (((int)(ptr_string[0] & 0x07)) << 12) +
(((int)(ptr_string[1] & 0x3F)) << 6) +
((int)(ptr_string[2] & 0x3F));
return (((int)(ptr_string[0] & 0x07)) << 18) +
(((int)(ptr_string[1] & 0x3F)) << 12) +
(((int)(ptr_string[2] & 0x3F)) << 6) +
((int)(ptr_string[3] & 0x3F));
}
/* UTF-8, 1 byte: 0vvvvvvv */
return (int)ptr_string[0];
}
const char *
utf8_next_char (const char *string)
{
if (!string)
return NULL;
/* UTF-8, 2 bytes: 110vvvvv 10vvvvvv */
if (((unsigned char)(string[0]) & 0xE0) == 0xC0)
{
if (!string[1])
return (char *)string + 1;
return (char *)string + 2;
}
/* UTF-8, 3 bytes: 1110vvvv 10vvvvvv 10vvvvvv */
else if (((unsigned char)(string[0]) & 0xF0) == 0xE0)
{
if (!string[1])
return (char *)string + 1;
if (!string[2])
return (char *)string + 2;
return (char *)string + 3;
}
/* UTF-8, 4 bytes: 11110vvv 10vvvvvv 10vvvvvv 10vvvvvv */
else if (((unsigned char)(string[0]) & 0xF8) == 0xF0)
{
if (!string[1])
return (char *)string + 1;
if (!string[2])
return (char *)string + 2;
if (!string[3])
return (char *)string + 3;
return (char *)string + 4;
}
/* UTF-8, 1 byte: 0vvvvvvv */
return (char *)string + 1;
}
void
gui_nick_hash_djb2_64 (const char *nickname, uint64_t *color_64)
{
while (nickname && nickname[0])
{
*color_64 ^= (*color_64 << 5) + (*color_64 >> 2) +
utf8_char_int (nickname);
nickname = utf8_next_char (nickname);
}
}
/* cyan, magenta, green, brown, lightblue,
default, lightcyan, lightmagenta, lightgreen, blue */
/*
* Hashes a nickname to find color.
*
* Returns a number which is the index of color in the nicks colors of option
* "weechat.color.chat_nick_colors".
*/
int
gui_nick_hash_color (const char *nickname)
{
const char *ptr_salt;
uint64_t color_64;
ptr_salt = "";
color_64 = 0;
switch (1)
{
default:
/* variant of djb2 hash */
color_64 = 5381;
gui_nick_hash_djb2_64 (ptr_salt, &color_64);
gui_nick_hash_djb2_64 (nickname, &color_64);
break;
}
return (color_64 % 10);
}
/*
cyan, magenta, green, brown, lightblue,
default, lightcyan, lightmagenta, lightgreen, blue
*/
/*
struct t_gui_color gui_weechat_colors_bold[GUI_CURSES_NUM_WEECHAT_COLORS + 1] =
{ { -1, -1, 0, "default" },
{ COLOR_BLACK, COLOR_BLACK, 0, "black" },
{ COLOR_BLACK, COLOR_BLACK + 8, A_BOLD, "darkgray" },
{ COLOR_RED, COLOR_RED, 0, "red" },
{ COLOR_RED, COLOR_RED + 8, A_BOLD, "lightred" },
{ COLOR_GREEN, COLOR_GREEN, 0, "green" },
{ COLOR_GREEN, COLOR_GREEN + 8, A_BOLD, "lightgreen" },
{ COLOR_YELLOW, COLOR_YELLOW, 0, "brown" },
{ COLOR_YELLOW, COLOR_YELLOW + 8, A_BOLD, "yellow" },
{ COLOR_BLUE, COLOR_BLUE, 0, "blue" },
{ COLOR_BLUE, COLOR_BLUE + 8, A_BOLD, "lightblue" },
{ COLOR_MAGENTA, COLOR_MAGENTA, 0, "magenta" },
{ COLOR_MAGENTA, COLOR_MAGENTA + 8, A_BOLD, "lightmagenta" },
{ COLOR_CYAN, COLOR_CYAN, 0, "cyan" },
{ COLOR_CYAN, COLOR_CYAN + 8, A_BOLD, "lightcyan" },
{ COLOR_WHITE, COLOR_WHITE, 0, "gray" },
{ COLOR_WHITE, COLOR_WHITE + 8, A_BOLD, "white" },
{ 0, 0, 0, NULL }
};
*/
/*
[Default] = -1,
[White] = 8 + COLOR_WHITE,
[Black] = 0 + COLOR_BLACK,
[Blue] = 0 + COLOR_BLUE,
[Green] = 0 + COLOR_GREEN,
[Red] = 8 + COLOR_RED,
[Brown] = 0 + COLOR_RED,
[Magenta] = 0 + COLOR_MAGENTA,
[Orange] = 0 + COLOR_YELLOW,
[Yellow] = 8 + COLOR_YELLOW,
[LightGreen] = 8 + COLOR_GREEN,
[Cyan] = 0 + COLOR_CYAN,
[LightCyan] = 8 + COLOR_CYAN,
[LightBlue] = 8 + COLOR_BLUE,
[Pink] = 8 + COLOR_MAGENTA,
[Gray] = 8 + COLOR_BLACK,
[LightGray] = 0 + COLOR_WHITE,
*/
// enum Color bx_weechat_nick_colors(const char *nick) {
uint32_t weechat_nick_colors(const char *nick) {
enum Color weechat_colors[] = {
Cyan, Magenta, Green, Orange, LightBlue,
Default, LightCyan, Pink, LightGreen, Blue,
};
int color = gui_nick_hash_color(nick);
return (uint32_t) weechat_colors[color];
}
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