core: move nick coloring from irc plugin to core (closes #262)

Options moved from irc.conf to weechat.conf:

* "irc.look.nick_color_force" moved to "weechat.look.nick_color_force"
* "irc.look.nick_color_hash" moved to "weechat.look.nick_color_hash"
* "irc.look.nick_color_stop_chars" moved to
  "weechat.look.nick_color_stop_chars"

New info (for API function "info_get"):

* "nick_color" (replaces "irc_nick_color")
* "nick_color_name" (replaced "irc_nick_color_name")

Info "irc_nick_color" and "irc_nick_color_name" are now deprecated.

And a bug has been fixed in nick coloring: stop chars are removed before
looking at a forced color.

5 files changed, 63 insertions, 341 deletions

diff --git a/src/plugins/irc/irc-config.c b/src/plugins/irc/irc-config.c
index 5365bfe9e..a488936b0 100644
--- a/src/plugins/irc/irc-config.c
+++ b/src/plugins/irc/irc-config.c
@@ -83,9 +83,6 @@ struct t_config_option *irc_config_look_join_auto_add_chantype;
 struct t_config_option *irc_config_look_msgbuffer_fallback;
 struct t_config_option *irc_config_look_new_channel_position;
 struct t_config_option *irc_config_look_new_pv_position;
-struct t_config_option *irc_config_look_nick_color_force;
-struct t_config_option *irc_config_look_nick_color_hash;
-struct t_config_option *irc_config_look_nick_color_stop_chars;
 struct t_config_option *irc_config_look_nick_completion_smart;
 struct t_config_option *irc_config_look_nick_mode;
 struct t_config_option *irc_config_look_nick_mode_empty;
@@ -150,11 +147,9 @@ struct t_config_option *irc_config_network_whois_double_nick;
 
 struct t_config_option *irc_config_server_default[IRC_SERVER_NUM_OPTIONS];
 
-struct t_hook *irc_config_hook_config_nick_colors = NULL;
-char **irc_config_nick_colors = NULL;
-int irc_config_num_nick_colors = 0;
+struct t_hook *irc_config_hook_config_nick_color_options = NULL;
+struct t_hook *irc_config_hook_config_chat_nick_colors = NULL;
 struct t_hashtable *irc_config_hashtable_display_join_message = NULL;
-struct t_hashtable *irc_config_hashtable_nick_color_force = NULL;
 struct t_hashtable *irc_config_hashtable_nick_prefixes = NULL;
 struct t_hashtable *irc_config_hashtable_color_mirc_remap = NULL;
 char **irc_config_nicks_hide_password = NULL;
@@ -234,28 +229,6 @@ irc_config_compute_nick_colors ()
 }
 
 /*
- * Sets nick colors using option "weechat.color.chat_nick_colors".
- */
-
-void
-irc_config_set_nick_colors ()
-{
-    if (irc_config_nick_colors)
-    {
-        weechat_string_free_split (irc_config_nick_colors);
-        irc_config_nick_colors = NULL;
-        irc_config_num_nick_colors = 0;
-    }
-
-    irc_config_nick_colors =
-        weechat_string_split (
-            weechat_config_string (
-                weechat_config_get ("weechat.color.chat_nick_colors")),
-            ",", 0, 0,
-            &irc_config_num_nick_colors);
-}
-
-/*
  * Checks if channel modes arguments must be displayed or hidden
  * (according to option irc.look.item_channel_modes_hide_args).
  *
@@ -295,7 +268,7 @@ irc_config_display_channel_modes_arguments (const char *modes)
 }
 
 /*
- * Callback for changes on option "weechat.color.chat_nick_colors".
+ * Callback for changes on options changing nick colors.
  */
 
 int
@@ -308,7 +281,6 @@ irc_config_change_nick_colors_cb (const void *pointer, void *data,
     (void) option;
     (void) value;
 
-    irc_config_set_nick_colors ();
     irc_config_compute_nick_colors ();
 
     return WEECHAT_RC_OK;
@@ -566,71 +538,6 @@ irc_config_change_look_highlight_tags_restrict (const void *pointer, void *data,
 }
 
 /*
- * Callback for changes on option "irc.look.nick_color_force".
- */
-
-void
-irc_config_change_look_nick_color_force (const void *pointer, void *data,
-                                         struct t_config_option *option)
-{
-    char **items, *pos;
-    int num_items, i;
-
-    /* make C compiler happy */
-    (void) pointer;
-    (void) data;
-    (void) option;
-
-    if (!irc_config_hashtable_nick_color_force)
-    {
-        irc_config_hashtable_nick_color_force = weechat_hashtable_new (
-            32,
-            WEECHAT_HASHTABLE_STRING,
-            WEECHAT_HASHTABLE_STRING,
-            NULL, NULL);
-    }
-    else
-        weechat_hashtable_remove_all (irc_config_hashtable_nick_color_force);
-
-    items = weechat_string_split (
-        weechat_config_string (irc_config_look_nick_color_force),
-        ";", 0, 0, &num_items);
-    if (items)
-    {
-        for (i = 0; i < num_items; i++)
-        {
-            pos = strchr (items[i], ':');
-            if (pos)
-            {
-                pos[0] = '\0';
-                weechat_hashtable_set (irc_config_hashtable_nick_color_force,
-                                       items[i],
-                                       pos + 1);
-            }
-        }
-        weechat_string_free_split (items);
-    }
-
-    irc_config_compute_nick_colors ();
-}
-
-/*
- * Callback for changes on options that change nick colors.
- */
-
-void
-irc_config_change_look_nick_colors (const void *pointer, void *data,
-                                    struct t_config_option *option)
-{
-    /* make C compiler happy */
-    (void) pointer;
-    (void) data;
-    (void) option;
-
-    irc_config_compute_nick_colors ();
-}
-
-/*
  * Callback for changes on option "irc.look.item_display_server".
  */
 
@@ -2530,11 +2437,6 @@ irc_config_init ()
         WEECHAT_HASHTABLE_STRING,
         WEECHAT_HASHTABLE_STRING,
         NULL, NULL);
-    irc_config_hashtable_nick_color_force = weechat_hashtable_new (
-        32,
-        WEECHAT_HASHTABLE_STRING,
-        WEECHAT_HASHTABLE_STRING,
-        NULL, NULL);
     irc_config_hashtable_nick_prefixes = weechat_hashtable_new (
         32,
         WEECHAT_HASHTABLE_STRING,
@@ -2821,39 +2723,6 @@ irc_config_init ()
            "of server)"),
         "none|next|near_server", 0, 0, "none", NULL, 0,
         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
-    irc_config_look_nick_color_force = weechat_config_new_option (
-        irc_config_file, ptr_section,
-        "nick_color_force", "string",
-        N_("force color for some nicks: hash computed with nickname "
-           "to find color will not be used for these nicks (format is: "
-           "\"nick1:color1;nick2:color2\"); look up for nicks is with "
-           "exact case then lower case, so it's possible to use only lower "
-           "case for nicks in this option"),
-        NULL, 0, 0, "", NULL, 0,
-        NULL, NULL, NULL,
-        &irc_config_change_look_nick_color_force, NULL, NULL,
-        NULL, NULL, NULL);
-    irc_config_look_nick_color_hash = weechat_config_new_option (
-        irc_config_file, ptr_section,
-        "nick_color_hash", "integer",
-        N_("hash algorithm used to find the color for a nick: djb2 = variant "
-           "of djb2 (position of letters matters: anagrams of a nick have "
-           "different color), sum = sum of letters"),
-        "djb2|sum", 0, 0, "sum", NULL, 0,
-        NULL, NULL, NULL,
-        &irc_config_change_look_nick_colors, NULL, NULL,
-        NULL, NULL, NULL);
-    irc_config_look_nick_color_stop_chars = weechat_config_new_option (
-        irc_config_file, ptr_section,
-        "nick_color_stop_chars", "string",
-        N_("chars used to stop in nick when computing color with letters of "
-           "nick (at least one char outside this list must be in string before "
-           "stopping) (example: nick \"|nick|away\" with \"|\" in chars will "
-           "return color of nick \"|nick\")"),
-        NULL, 0, 0, "_|[", NULL, 0,
-        NULL, NULL, NULL,
-        &irc_config_change_look_nick_colors, NULL, NULL,
-        NULL, NULL, NULL);
     irc_config_look_nick_completion_smart = weechat_config_new_option (
         irc_config_file, ptr_section,
         "nick_completion_smart", "integer",
@@ -3396,7 +3265,10 @@ irc_config_init ()
     }
     irc_config_section_server = ptr_section;
 
-    irc_config_hook_config_nick_colors = weechat_hook_config (
+    irc_config_hook_config_nick_color_options = weechat_hook_config (
+        "weechat.look.nick_color_*",
+        &irc_config_change_nick_colors_cb, NULL, NULL);
+    irc_config_hook_config_chat_nick_colors = weechat_hook_config (
         "weechat.color.chat_nick_colors",
         &irc_config_change_nick_colors_cb, NULL, NULL);
 
@@ -3420,7 +3292,6 @@ irc_config_read ()
     {
         irc_notify_new_for_all_servers ();
         irc_config_change_look_display_join_message (NULL, NULL, NULL);
-        irc_config_change_look_nick_color_force (NULL, NULL, NULL);
         irc_config_change_look_nicks_hide_password (NULL, NULL, NULL);
         irc_config_change_color_nick_prefixes (NULL, NULL, NULL);
         irc_config_change_color_mirc_remap (NULL, NULL, NULL);
@@ -3452,16 +3323,16 @@ irc_config_free ()
 {
     weechat_config_free (irc_config_file);
 
-    if (irc_config_hook_config_nick_colors)
+    if (irc_config_hook_config_nick_color_options)
     {
-        weechat_unhook (irc_config_hook_config_nick_colors);
-        irc_config_hook_config_nick_colors = NULL;
+        weechat_unhook (irc_config_hook_config_nick_color_options);
+        irc_config_hook_config_nick_color_options = NULL;
     }
-    if (irc_config_nick_colors)
+
+    if (irc_config_hook_config_chat_nick_colors)
     {
-        weechat_string_free_split (irc_config_nick_colors);
-        irc_config_nick_colors = NULL;
-        irc_config_num_nick_colors = 0;
+        weechat_unhook (irc_config_hook_config_chat_nick_colors);
+        irc_config_hook_config_chat_nick_colors = NULL;
     }
 
     if (irc_config_nicks_hide_password)
@@ -3477,12 +3348,6 @@ irc_config_free ()
         irc_config_hashtable_display_join_message = NULL;
     }
 
-    if (irc_config_hashtable_nick_color_force)
-    {
-        weechat_hashtable_free (irc_config_hashtable_nick_color_force);
-        irc_config_hashtable_nick_color_force = NULL;
-    }
-
     if (irc_config_hashtable_nick_prefixes)
     {
         weechat_hashtable_free (irc_config_hashtable_nick_prefixes);
diff --git a/src/plugins/irc/irc-config.h b/src/plugins/irc/irc-config.h
index dc75af49e..ca1f5b531 100644
--- a/src/plugins/irc/irc-config.h
+++ b/src/plugins/irc/irc-config.h
@@ -62,12 +62,6 @@ enum t_irc_config_look_notice_as_pv
     IRC_CONFIG_LOOK_NOTICE_AS_PV_ALWAYS,
 };
 
-enum t_irc_config_look_nick_color_hash
-{
-    IRC_CONFIG_LOOK_NICK_COLOR_HASH_DJB2 = 0,
-    IRC_CONFIG_LOOK_NICK_COLOR_HASH_SUM,
-};
-
 enum t_irc_config_look_nick_mode
 {
     IRC_CONFIG_LOOK_NICK_MODE_NONE = 0,
@@ -128,9 +122,6 @@ extern struct t_config_option *irc_config_look_join_auto_add_chantype;
 extern struct t_config_option *irc_config_look_msgbuffer_fallback;
 extern struct t_config_option *irc_config_look_new_channel_position;
 extern struct t_config_option *irc_config_look_new_pv_position;
-extern struct t_config_option *irc_config_look_nick_color_force;
-extern struct t_config_option *irc_config_look_nick_color_hash;
-extern struct t_config_option *irc_config_look_nick_color_stop_chars;
 extern struct t_config_option *irc_config_look_nick_completion_smart;
 extern struct t_config_option *irc_config_look_nick_mode;
 extern struct t_config_option *irc_config_look_nick_mode_empty;
@@ -189,17 +180,12 @@ extern struct t_config_option *irc_config_network_whois_double_nick;
 
 extern struct t_config_option *irc_config_server_default[];
 
-extern char **irc_config_nick_colors;
-extern int irc_config_num_nick_colors;
-
 extern struct t_hashtable *irc_config_hashtable_display_join_message;
-extern struct t_hashtable *irc_config_hashtable_nick_color_force;
 extern struct t_hashtable *irc_config_hashtable_nick_prefixes;
 extern struct t_hashtable *irc_config_hashtable_color_mirc_remap;
 extern char **irc_config_nicks_hide_password;
 extern int irc_config_num_nicks_hide_password;
 
-extern void irc_config_set_nick_colors ();
 extern int irc_config_display_channel_modes_arguments (const char *modes);
 extern int irc_config_server_check_value_cb (const void *pointer, void *data,
                                              struct t_config_option *option,
diff --git a/src/plugins/irc/irc-info.c b/src/plugins/irc/irc-info.c
index 7133b21a1..d4f75439d 100644
--- a/src/plugins/irc/irc-info.c
+++ b/src/plugins/irc/irc-info.c
@@ -847,12 +847,14 @@ irc_info_init ()
         &irc_info_info_irc_nick_from_host_cb, NULL, NULL);
     weechat_hook_info (
         "irc_nick_color",
-        N_("get nick color code"),
+        N_("get nick color code "
+           "(*deprecated* since version 1.5, replaced by \"nick_color\")"),
         N_("nickname"),
         &irc_info_info_irc_nick_color_cb, NULL, NULL);
     weechat_hook_info (
         "irc_nick_color_name",
-        N_("get nick color name"),
+        N_("get nick color name "
+           "(*deprecated* since version 1.5, replaced by \"nick_color_name\")"),
         N_("nickname"),
         &irc_info_info_irc_nick_color_name_cb, NULL, NULL);
     weechat_hook_info (
diff --git a/src/plugins/irc/irc-nick.c b/src/plugins/irc/irc-nick.c
index 308181c76..6f01f48d8 100644
--- a/src/plugins/irc/irc-nick.c
+++ b/src/plugins/irc/irc-nick.c
@@ -93,130 +93,6 @@ irc_nick_is_nick (const char *string)
 }
 
 /*
- * Duplicates a nick and stops at first char in list (using option
- * irc.look.nick_color_stop_chars).
- *
- * Note: result must be freed after use.
- */
-
-char *
-irc_nick_strdup_for_color (const char *nickname)
-{
-    int char_size, other_char_seen;
-    char *result, *pos, utf_char[16];
-
-    result = malloc (strlen (nickname) + 1);
-    pos = result;
-    other_char_seen = 0;
-    while (nickname[0])
-    {
-        char_size = weechat_utf8_char_size (nickname);
-        memcpy (utf_char, nickname, char_size);
-        utf_char[char_size] = '\0';
-
-        if (strstr (weechat_config_string (irc_config_look_nick_color_stop_chars),
-                    utf_char))
-        {
-            if (other_char_seen)
-            {
-                pos[0] = '\0';
-                return result;
-            }
-        }
-        else
-        {
-            other_char_seen = 1;
-        }
-        memcpy (pos, utf_char, char_size);
-        pos += char_size;
-
-        nickname += char_size;
-    }
-    pos[0] = '\0';
-    return result;
-}
-
-/*
- * 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
-irc_nick_hash_color (const char *nickname)
-{
-    unsigned long color;
-    const char *ptr_nick;
-
-    if (!irc_config_nick_colors)
-        irc_config_set_nick_colors ();
-
-    if (irc_config_num_nick_colors == 0)
-        return 0;
-
-    ptr_nick = nickname;
-    color = 0;
-
-    switch (weechat_config_integer (irc_config_look_nick_color_hash))
-    {
-        case IRC_CONFIG_LOOK_NICK_COLOR_HASH_DJB2:
-            /* variant of djb2 hash */
-            color = 5381;
-            while (ptr_nick && ptr_nick[0])
-            {
-                color ^= (color << 5) + (color >> 2) + weechat_utf8_char_int (ptr_nick);
-                ptr_nick = weechat_utf8_next_char (ptr_nick);
-            }
-            break;
-        case IRC_CONFIG_LOOK_NICK_COLOR_HASH_SUM:
-            /* sum of letters */
-            color = 0;
-            while (ptr_nick && ptr_nick[0])
-            {
-                color += weechat_utf8_char_int (ptr_nick);
-                ptr_nick = weechat_utf8_next_char (ptr_nick);
-            }
-            break;
-    }
-
-    return (color % irc_config_num_nick_colors);
-}
-
-/*
- * Gets forced color for a nick.
- *
- * Returns the name of color (for example: "green"), NULL if no color is forced
- * for nick.
- */
-
-const char *
-irc_nick_get_forced_color (const char *nickname)
-{
-    const char *forced_color;
-    char *nick_lower;
-
-    if (!nickname)
-        return NULL;
-
-    forced_color = weechat_hashtable_get (irc_config_hashtable_nick_color_force,
-                                          nickname);
-    if (forced_color)
-        return forced_color;
-
-    nick_lower = strdup (nickname);
-    if (nick_lower)
-    {
-        weechat_string_tolower (nick_lower);
-        forced_color = weechat_hashtable_get (irc_config_hashtable_nick_color_force,
-                                              nick_lower);
-        free (nick_lower);
-    }
-
-    return forced_color;
-}
-
-/*
  * Finds a color code for a nick (according to nick letters).
  *
  * Returns a WeeChat color code (that can be used for display).
@@ -225,34 +101,7 @@ irc_nick_get_forced_color (const char *nickname)
 const char *
 irc_nick_find_color (const char *nickname)
 {
-    int color;
-    char *nickname2;
-    const char *forced_color, *str_color;
-
-    if (!irc_config_nick_colors)
-        irc_config_set_nick_colors ();
-
-    if (irc_config_num_nick_colors == 0)
-        return weechat_color ("default");
-
-    /* look if color is forced */
-    forced_color = irc_nick_get_forced_color (nickname);
-    if (forced_color)
-    {
-        forced_color = weechat_color (forced_color);
-        if (forced_color && forced_color[0])
-            return forced_color;
-    }
-
-    /* hash nickname to get color */
-    nickname2 = irc_nick_strdup_for_color (nickname);
-    color = irc_nick_hash_color ((nickname2) ? nickname2 : nickname);
-    if (nickname2)
-        free (nickname2);
-
-    /* return color */
-    str_color = weechat_color (irc_config_nick_colors[color]);
-    return (str_color[0]) ? str_color : weechat_color("default");
+    return weechat_info_get ("nick_color", nickname);
 }
 
 /*
@@ -264,30 +113,7 @@ irc_nick_find_color (const char *nickname)
 const char *
 irc_nick_find_color_name (const char *nickname)
 {
-    int color;
-    char *nickname2;
-    const char *forced_color;
-    static char *default_color = "default";
-
-    if (!irc_config_nick_colors)
-        irc_config_set_nick_colors ();
-
-    if (irc_config_num_nick_colors == 0)
-        return default_color;
-
-    /* look if color is forced */
-    forced_color = irc_nick_get_forced_color (nickname);
-    if (forced_color)
-        return forced_color;
-
-    /* hash nickname to get color */
-    nickname2 = irc_nick_strdup_for_color (nickname);
-    color = irc_nick_hash_color ((nickname2) ? nickname2 : nickname);
-    if (nickname2)
-        free (nickname2);
-
-    /* return color name */
-    return irc_config_nick_colors[color];
+    return weechat_info_get ("nick_color_name", nickname);
 }
 
 /*
diff --git a/src/plugins/plugin-api.c b/src/plugins/plugin-api.c
index 4be88b077..cc4e4b0a9 100644
--- a/src/plugins/plugin-api.c
+++ b/src/plugins/plugin-api.c
@@ -59,6 +59,7 @@
 #include "../gui/gui-key.h"
 #include "../gui/gui-layout.h"
 #include "../gui/gui-line.h"
+#include "../gui/gui-nick.h"
 #include "../gui/gui-nicklist.h"
 #include "../gui/gui-window.h"
 #include "plugin.h"
@@ -786,6 +787,40 @@ plugin_api_info_color_rgb2term_cb (const void *pointer, void *data,
 }
 
 /*
+ * Returns nick color code for a nickname.
+ */
+
+const char *
+plugin_api_info_nick_color_cb (const void *pointer, void *data,
+                               const char *info_name,
+                               const char *arguments)
+{
+    /* make C compiler happy */
+    (void) pointer;
+    (void) data;
+    (void) info_name;
+
+    return gui_nick_find_color (arguments);
+}
+
+/*
+ * Returns nick color name for a nickname.
+ */
+
+const char *
+plugin_api_info_nick_color_name_cb (const void *pointer, void *data,
+                                    const char *info_name,
+                                    const char *arguments)
+{
+    /* make C compiler happy */
+    (void) pointer;
+    (void) data;
+    (void) info_name;
+
+    return gui_nick_find_color_name (arguments);
+}
+
+/*
  * Returns WeeChat infolist "bar".
  *
  * Note: result must be freed after use with function weechat_infolist_free().
@@ -1855,6 +1890,14 @@ plugin_api_init ()
                N_("RGB color converted to terminal color (0-255)"),
                N_("rgb,limit (limit is optional and is set to 256 by default)"),
                &plugin_api_info_color_rgb2term_cb, NULL, NULL);
+    hook_info (NULL, "nick_color",
+               N_("get nick color code"),
+               N_("nickname"),
+               &plugin_api_info_nick_color_cb, NULL, NULL);
+    hook_info (NULL, "nick_color_name",
+               N_("get nick color name"),
+               N_("nickname"),
+               &plugin_api_info_nick_color_name_cb, NULL, NULL);
 
     /* WeeChat core infolist hooks */
     hook_infolist (NULL, "bar",