foxiepaws
/
weechat
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

core: move each hash algorithm in a separate function (issue #635)

v2.8-utf8proc
Sébastien Helleu 2019-11-25 22:31:36 +01:00
parent 771b932dec
commit d66a02ca9d
1 changed files with 82 additions and 66 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

148
src/gui/gui-nick.c
View File

@ -36,6 +36,72 @@
#include "gui-color.h"
/*
* Hashes a string with a variant of djb2 hash, using 64-bit integer.
*
* Number pointed by *color_64 is updated by the function.
*/
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);
}
}
/*
* Hashes a string with a variant of djb2 hash, using 32-bit integer.
*
* Number pointed by *color_32 is updated by the function.
*/
void
gui_nick_hash_djb2_32 (const char *nickname, uint32_t *color_32)
{
while (nickname && nickname[0])
{
*color_32 ^= (*color_32 << 5) + (*color_32 >> 2) +
utf8_char_int (nickname);
nickname = utf8_next_char (nickname);
}
}
/*
* Hashes a string with sum of letters, using 64-bit integer.
*
* Number pointed by *color_64 is updated by the function.
*/
void
gui_nick_hash_sum_64 (const char *nickname, uint64_t *color_64)
{
while (nickname && nickname[0])
{
*color_64 += utf8_char_int (nickname);
nickname = utf8_next_char (nickname);
}
}
/*
* Hashes a string with sum of letters, using 32-bit integer.
*
* Number pointed by *color_32 is updated by the function.
*/
void
gui_nick_hash_sum_32 (const char *nickname, uint32_t *color_32)
{
while (nickname && nickname[0])
{
*color_32 += utf8_char_int (nickname);
nickname = utf8_next_char (nickname);
}
}
/*
* Hashes a nickname to find color.
*
@ -46,9 +112,9 @@
int
gui_nick_hash_color (const char *nickname)
{
uint64_t color;
const char *ptr_salt;
uint64_t color_64;
uint32_t color_32;
const char *ptr_salt, *ptr_nick;
if (!nickname || !nickname[0])
return 0;
@ -60,90 +126,40 @@ gui_nick_hash_color (const char *nickname)
return 0;
ptr_salt = CONFIG_STRING(config_look_nick_color_hash_salt);
if (ptr_salt && ptr_salt[0])
{
ptr_nick = ptr_salt;
}
else
{
ptr_salt = NULL;
ptr_nick = nickname;
}
color = 0;
color_64 = 0;
switch (CONFIG_INTEGER(config_look_nick_color_hash))
{
case CONFIG_LOOK_NICK_COLOR_HASH_DJB2:
/* variant of djb2 hash */
color = 5381;
while (1)
{
while (ptr_nick && ptr_nick[0])
{
color ^= (color << 5) + (color >> 2) + utf8_char_int (ptr_nick);
ptr_nick = utf8_next_char (ptr_nick);
}
if (!ptr_salt)
break;
ptr_salt = NULL;
ptr_nick = nickname;
}
color_64 = 5381;
gui_nick_hash_djb2_64 (ptr_salt, &color_64);
gui_nick_hash_djb2_64 (nickname, &color_64);
break;
case CONFIG_LOOK_NICK_COLOR_HASH_SUM:
/* sum of letters */
color = 0;
while (1)
{
while (ptr_nick && ptr_nick[0])
{
color += utf8_char_int (ptr_nick);
ptr_nick = utf8_next_char (ptr_nick);
}
if (!ptr_salt)
break;
ptr_salt = NULL;
ptr_nick = nickname;
}
color_64 = 0;
gui_nick_hash_sum_64 (ptr_salt, &color_64);
gui_nick_hash_sum_64 (nickname, &color_64);
break;
case CONFIG_LOOK_NICK_COLOR_HASH_DJB2_32:
/* variant of djb2 hash (using 32-bit integer) */
color_32 = 5381;
while (1)
{
while (ptr_nick && ptr_nick[0])
{
color_32 ^= (color_32 << 5) + (color_32 >> 2)
+ utf8_char_int (ptr_nick);
ptr_nick = utf8_next_char (ptr_nick);
}
if (!ptr_salt)
break;
ptr_salt = NULL;
ptr_nick = nickname;
}
color = color_32;
gui_nick_hash_djb2_32 (ptr_salt, &color_32);
gui_nick_hash_djb2_32 (nickname, &color_32);
color_64 = color_32;
break;
case CONFIG_LOOK_NICK_COLOR_HASH_SUM_32:
/* sum of letters (using 32-bit integer) */
color_32 = 0;
while (1)
{
while (ptr_nick && ptr_nick[0])
{
color_32 += utf8_char_int (ptr_nick);
ptr_nick = utf8_next_char (ptr_nick);
}
if (!ptr_salt)
break;
ptr_salt = NULL;
ptr_nick = nickname;
}
color = color_32;
gui_nick_hash_sum_32 (ptr_salt, &color_32);
gui_nick_hash_sum_32 (nickname, &color_32);
color_64 = color_32;
break;
}
return (color % config_num_nick_colors);
return (color_64 % config_num_nick_colors);
}
/*