Destroy all settings and commands used by modules when they're unloaded.

git-svn-id: http://svn.irssi.org/repos/irssi/trunk@1001 dbcabf3a-b0e7-0310-adc4-f8d773084564

5 files changed, 261 insertions, 32 deletions

diff --git a/src/core/commands.c b/src/core/commands.c
index 042f26b6..200dc3d0 100644
--- a/src/core/commands.c
+++ b/src/core/commands.c
@@ -53,6 +53,42 @@ COMMAND_REC *command_find(const char *cmd)
 	return NULL;
 }
 
+static COMMAND_MODULE_REC *command_module_find(COMMAND_REC *rec,
+					       const char *module)
+{
+	GSList *tmp;
+
+	g_return_val_if_fail(rec != NULL, NULL);
+	g_return_val_if_fail(module != NULL, NULL);
+
+	for (tmp = rec->modules; tmp != NULL; tmp = tmp->next) {
+		COMMAND_MODULE_REC *rec = tmp->data;
+
+		if (g_strcasecmp(rec->name, module) == 0)
+			return rec;
+	}
+
+	return NULL;
+}
+
+static COMMAND_MODULE_REC *command_module_find_func(COMMAND_REC *rec,
+						    SIGNAL_FUNC func)
+{
+	GSList *tmp;
+
+	g_return_val_if_fail(rec != NULL, NULL);
+	g_return_val_if_fail(func != NULL, NULL);
+
+	for (tmp = rec->modules; tmp != NULL; tmp = tmp->next) {
+		COMMAND_MODULE_REC *rec = tmp->data;
+
+                if (g_slist_find(rec->signals, func) != NULL)
+			return rec;
+	}
+
+	return NULL;
+}
+
 int command_have_sub(const char *command)
 {
 	GSList *tmp;
@@ -73,12 +109,31 @@ int command_have_sub(const char *command)
 	return FALSE;
 }
 
-void command_bind_to(int pos, const char *cmd,
+static COMMAND_MODULE_REC *command_module_get(COMMAND_REC *rec,
+					      const char *module)
+{
+        COMMAND_MODULE_REC *modrec;
+
+	g_return_val_if_fail(rec != NULL, NULL);
+
+	modrec = command_module_find(rec, module);
+	if (modrec == NULL) {
+		modrec = g_new0(COMMAND_MODULE_REC, 1);
+		modrec->name = g_strdup(module);
+		rec->modules = g_slist_append(rec->modules, modrec);
+	}
+
+        return modrec;
+}
+
+void command_bind_to(const char *module, int pos, const char *cmd,
 		     const char *category, SIGNAL_FUNC func)
 {
 	COMMAND_REC *rec;
+        COMMAND_MODULE_REC *modrec;
 	char *str;
 
+	g_return_if_fail(module != NULL);
 	g_return_if_fail(cmd != NULL);
 
 	rec = command_find(cmd);
@@ -88,18 +143,20 @@ void command_bind_to(int pos, const char *cmd,
 		rec->category = category == NULL ? NULL : g_strdup(category);
 		commands = g_slist_append(commands, rec);
 	}
-	rec->count++;
+        modrec = command_module_get(rec, module);
+
+        modrec->signals = g_slist_append(modrec->signals, func);
 
 	if (func != NULL) {
 		str = g_strconcat("command ", cmd, NULL);
-		signal_add_to(MODULE_NAME, pos, str, func);
+		signal_add_to(module, pos, str, func);
 		g_free(str);
 	}
 
 	signal_emit("commandlist new", 1, rec);
 }
 
-void command_free(COMMAND_REC *rec)
+static void command_free(COMMAND_REC *rec)
 {
 	commands = g_slist_remove(commands, rec);
 	signal_emit("commandlist remove", 1, rec);
@@ -110,22 +167,66 @@ void command_free(COMMAND_REC *rec)
 	g_free(rec);
 }
 
+static void command_module_free(COMMAND_MODULE_REC *modrec, COMMAND_REC *rec)
+{
+	rec->modules = g_slist_remove(rec->modules, modrec);
+
+	g_slist_free(modrec->signals);
+        g_free(modrec->name);
+        g_free_not_null(modrec->options);
+        g_free(modrec);
+}
+
+static void command_module_destroy(COMMAND_REC *rec,
+				   COMMAND_MODULE_REC *modrec)
+{
+	GSList *tmp, *freelist;
+
+        command_module_free(modrec, rec);
+
+	/* command_set_options() might have added module declaration of it's
+	   own without any signals .. check if they're the only ones left
+	   and if so, destroy them. */
+        freelist = NULL;
+	for (tmp = rec->modules; tmp != NULL; tmp = tmp->next) {
+		COMMAND_MODULE_REC *rec = tmp->data;
+
+		if (rec->signals == NULL)
+			freelist = g_slist_append(freelist, rec);
+		else {
+                        g_slist_free(freelist);
+                        freelist = NULL;
+			break;
+		}
+	}
+
+	g_slist_foreach(freelist, (GFunc) command_module_free, rec);
+	g_slist_free(freelist);
+
+	if (rec->modules == NULL)
+		command_free(rec);
+}
+
 void command_unbind(const char *cmd, SIGNAL_FUNC func)
 {
 	COMMAND_REC *rec;
+        COMMAND_MODULE_REC *modrec;
 	char *str;
 
 	g_return_if_fail(cmd != NULL);
+	g_return_if_fail(func != NULL);
 
 	rec = command_find(cmd);
-	if (rec != NULL && --rec->count == 0)
-		command_free(rec);
-
-	if (func != NULL) {
-		str = g_strconcat("command ", cmd, NULL);
-		signal_remove(str, func);
-		g_free(str);
+	if (rec != NULL) {
+		modrec = command_module_find_func(rec, func);
+		modrec->signals = g_slist_remove(modrec->signals, func);
+		if (modrec->signals == NULL)
+			command_module_destroy(rec, modrec);
 	}
+
+	str = g_strconcat("command ", cmd, NULL);
+	signal_remove(str, func);
+	g_free(str);
 }
 
 /* Expand `cmd' - returns `cmd' if not found, NULL if more than one
@@ -256,18 +357,11 @@ int command_have_option(const char *cmd, const char *option)
 	return FALSE;
 }
 
-void command_set_options(const char *cmd, const char *options)
+static void command_calc_options(COMMAND_REC *rec, const char *options)
 {
-	COMMAND_REC *rec;
 	char **optlist, **tmp, *name, *str;
 	GSList *list, *oldopt;
 
-	g_return_if_fail(cmd != NULL);
-	g_return_if_fail(options != NULL);
-
-        rec = command_find(cmd);
-	g_return_if_fail(rec != NULL);
-
 	optlist = g_strsplit(options, " ", -1);
 
 	if (rec->options == NULL) {
@@ -307,6 +401,52 @@ void command_set_options(const char *cmd, const char *options)
 	g_slist_free(list);
 }
 
+/* recalculate options to command from options in all modules */
+static void command_update_options(COMMAND_REC *rec)
+{
+	GSList *tmp;
+
+	g_strfreev(rec->options);
+	rec->options = NULL;
+
+	for (tmp = rec->modules; tmp != NULL; tmp = tmp->next) {
+		COMMAND_MODULE_REC *modrec = tmp->data;
+
+		if (modrec->options != NULL)
+			command_calc_options(rec, modrec->options);
+	}
+}
+
+void command_set_options_module(const char *module,
+				const char *cmd, const char *options)
+{
+	COMMAND_REC *rec;
+	COMMAND_MODULE_REC *modrec;
+        int reload;
+
+	g_return_if_fail(module != NULL);
+	g_return_if_fail(cmd != NULL);
+	g_return_if_fail(options != NULL);
+
+        rec = command_find(cmd);
+	g_return_if_fail(rec != NULL);
+        modrec = command_module_get(rec, module);
+
+	reload = modrec->options != NULL;
+        if (reload) {
+		/* options already set for the module ..
+		   we need to recalculate everything */
+		g_free(modrec->options);
+	}
+
+	modrec->options = g_strdup(options);
+
+        if (reload)
+		command_update_options(rec);
+        else
+		command_calc_options(rec, options);
+}
+
 char *cmd_get_param(char **data)
 {
 	char *pos;
@@ -600,6 +740,40 @@ void cmd_get_remove_func(CMD_GET_FUNC func)
         cmdget_funcs = g_slist_prepend(cmdget_funcs, (void *) func);
 }
 
+static void command_module_unbind_all(COMMAND_REC *rec,
+				      COMMAND_MODULE_REC *modrec)
+{
+	GSList *tmp, *next;
+
+	for (tmp = modrec->signals; tmp != NULL; tmp = next) {
+		next = tmp->next;
+
+		command_unbind(rec->cmd, tmp->data);
+	}
+
+	if (g_slist_find(commands, rec) != NULL) {
+		/* this module might have removed some options
+		   from command, update them. */
+		command_update_options(rec);
+	}
+}
+
+void commands_remove_module(const char *module)
+{
+	GSList *tmp, *next, *modlist;
+
+	g_return_if_fail(module != NULL);
+
+	for (tmp = commands; tmp != NULL; tmp = next) {
+		COMMAND_REC *rec = tmp->data;
+
+                next = tmp->next;
+		modlist = gslist_find_string(rec->modules, module);
+		if (modlist != NULL)
+			command_module_unbind_all(rec, modlist->data);
+	}
+}
+
 #define alias_runstack_push(alias) \
 	alias_runstack = g_slist_append(alias_runstack, alias)
 
diff --git a/src/core/commands.h b/src/core/commands.h
index 6a9d9be4..6acf11f3 100644
--- a/src/core/commands.h
+++ b/src/core/commands.h
@@ -4,10 +4,16 @@
 #include "signals.h"
 
 typedef struct {
-        int count;
+	char *name;
+	char *options;
+        GSList *signals;
+} COMMAND_MODULE_REC;
+
+typedef struct {
+        GSList *modules;
 	char *category;
 	char *cmd;
-	char **options;
+	char **options; /* combined from modules[..]->options */
 } COMMAND_REC;
 
 enum {
@@ -49,11 +55,12 @@ extern GSList *commands;
 extern char *current_command; /* the command we're right now. */
 
 /* Bind command to specified function. */
-void command_bind_to(int pos, const char *cmd,
+void command_bind_to(const char *module, int pos, const char *cmd,
 		     const char *category, SIGNAL_FUNC func);
-#define command_bind(a, b, c) command_bind_to(1, a, b, c)
-#define command_bind_first(a, b, c) command_bind_to(0, a, b, c)
-#define command_bind_last(a, b, c) command_bind_to(2, a, b, c)
+#define command_bind(a, b, c) command_bind_to(MODULE_NAME, 1, a, b, c)
+#define command_bind_first(a, b, c) command_bind_to(MODULE_NAME, 0, a, b, c)
+#define command_bind_last(a, b, c) command_bind_to(MODULE_NAME, 2, a, b, c)
+
 void command_unbind(const char *cmd, SIGNAL_FUNC func);
 
 /* Run subcommand, `cmd' contains the base command, first word in `data'
@@ -81,7 +88,10 @@ int command_have_sub(const char *command);
    call will override the previous */
 #define iscmdtype(c) \
         ((c) == '!' || (c) == '-' || (c) == '+' || (c) == '@')
-void command_set_options(const char *cmd, const char *options);
+void command_set_options_module(const char *module,
+				const char *cmd, const char *options);
+#define command_set_options(cmd, options) \
+	command_set_options_module(MODULE_NAME, cmd, options)
 
 /* Returns TRUE if command has specified option. */
 int command_have_option(const char *cmd, const char *option);
@@ -131,6 +141,8 @@ typedef char* (*CMD_GET_FUNC) (const char *data, int *count, va_list *args);
 void cmd_get_add_func(CMD_GET_FUNC func);
 void cmd_get_remove_func(CMD_GET_FUNC func);
 
+void commands_remove_module(const char *module);
+
 void commands_init(void);
 void commands_deinit(void);
 
diff --git a/src/core/modules.c b/src/core/modules.c
index 85bbf587..e45a05b5 100644
--- a/src/core/modules.c
+++ b/src/core/modules.c
@@ -22,6 +22,9 @@
 #include "modules.h"
 #include "signals.h"
 
+#include "commands.h"
+#include "settings.h"
+
 GSList *modules;
 
 static GHashTable *uniqids, *uniqstrids;
@@ -342,7 +345,10 @@ void module_unload(MODULE_REC *module)
 		module_deinit();
 	g_free(deinitfunc);
 
+        settings_remove_module(module->name);
+	commands_remove_module(module->name);
 	signals_remove_module(module->name);
+
 	g_module_close(module->gmodule);
 	g_free(module->name);
 	g_free(module);
diff --git a/src/core/settings.c b/src/core/settings.c
index 926b1120..fbf46164 100644
--- a/src/core/settings.c
+++ b/src/core/settings.c
@@ -88,7 +88,8 @@ int settings_get_bool(const char *key)
 				settings_get_default_int(key));
 }
 
-void settings_add_str(const char *section, const char *key, const char *def)
+void settings_add_str_module(const char *module, const char *section,
+			     const char *key, const char *def)
 {
 	SETTINGS_REC *rec;
 
@@ -99,6 +100,7 @@ void settings_add_str(const char *section, const char *key, const char *def)
 	g_return_if_fail(rec == NULL);
 
 	rec = g_new0(SETTINGS_REC, 1);
+        rec->module = g_strdup(module);
 	rec->key = g_strdup(key);
 	rec->section = g_strdup(section);
 	rec->def = def == NULL ? NULL : g_strdup(def);
@@ -106,7 +108,8 @@ void settings_add_str(const char *section, const char *key, const char *def)
 	g_hash_table_insert(settings, rec->key, rec);
 }
 
-void settings_add_int(const char *section, const char *key, int def)
+void settings_add_int_module(const char *module, const char *section,
+			     const char *key, int def)
 {
 	SETTINGS_REC *rec;
 
@@ -117,6 +120,7 @@ void settings_add_int(const char *section, const char *key, int def)
 	g_return_if_fail(rec == NULL);
 
 	rec = g_new0(SETTINGS_REC, 1);
+        rec->module = g_strdup(module);
 	rec->type = SETTING_TYPE_INT;
 	rec->key = g_strdup(key);
 	rec->section = g_strdup(section);
@@ -125,7 +129,8 @@ void settings_add_int(const char *section, const char *key, int def)
 	g_hash_table_insert(settings, rec->key, rec);
 }
 
-void settings_add_bool(const char *section, const char *key, int def)
+void settings_add_bool_module(const char *module, const char *section,
+			      const char *key, int def)
 {
 	SETTINGS_REC *rec;
 
@@ -136,6 +141,7 @@ void settings_add_bool(const char *section, const char *key, int def)
 	g_return_if_fail(rec == NULL);
 
 	rec = g_new0(SETTINGS_REC, 1);
+        rec->module = g_strdup(module);
 	rec->type = SETTING_TYPE_BOOLEAN;
 	rec->key = g_strdup(key);
 	rec->section = g_strdup(section);
@@ -148,6 +154,7 @@ static void settings_destroy(SETTINGS_REC *rec)
 {
 	if (rec->type == SETTING_TYPE_STRING)
 		g_free_not_null(rec->def);
+        g_free(rec->module);
         g_free(rec->section);
         g_free(rec->key);
 	g_free(rec);
@@ -166,6 +173,24 @@ void settings_remove(const char *key)
 	settings_destroy(rec);
 }
 
+static int settings_remove_hash(const char *key, SETTINGS_REC *rec,
+				const char *module)
+{
+	if (strcmp(rec->module, module) == 0) {
+		settings_destroy(rec);
+                return TRUE;
+	}
+
+        return FALSE;
+}
+
+void settings_remove_module(const char *module)
+{
+	g_hash_table_foreach_remove(settings,
+				    (GHRFunc) settings_remove_hash,
+				    (void *) module);
+}
+
 int settings_get_type(const char *key)
 {
 	SETTINGS_REC *rec;
diff --git a/src/core/settings.h b/src/core/settings.h
index e56daefc..bd4c5b94 100644
--- a/src/core/settings.h
+++ b/src/core/settings.h
@@ -12,6 +12,7 @@ enum {
 };
 
 typedef struct {
+        char *module;
 	int type;
 	char *key;
 	char *section;
@@ -45,10 +46,21 @@ int settings_get_int(const char *key);
 int settings_get_bool(const char *key);
 
 /* Functions to add/remove settings */
-void settings_add_str(const char *section, const char *key, const char *def);
-void settings_add_int(const char *section, const char *key, int def);
-void settings_add_bool(const char *section, const char *key, int def);
+void settings_add_str_module(const char *module, const char *section,
+			     const char *key, const char *def);
+void settings_add_int_module(const char *module, const char *section,
+			     const char *key, int def);
+void settings_add_bool_module(const char *module, const char *section,
+			      const char *key, int def);
 void settings_remove(const char *key);
+void settings_remove_module(const char *module);
+
+#define settings_add_str(section, key, def) \
+	settings_add_str_module(MODULE_NAME, section, key, def)
+#define settings_add_int(section, key, def) \
+	settings_add_int_module(MODULE_NAME, section, key, def)
+#define settings_add_bool(section, key, def) \
+	settings_add_bool_module(MODULE_NAME, section, key, def)
 
 /* Get the type (SETTING_TYPE_xxx) of `key' */
 int settings_get_type(const char *key);