CommandListBuilder: use std::list instead of GSList

src/ClientProcess.cxx

@@ -29,13 +29,14 @@
 #define CLIENT_LIST_MODE_END "command_list_end"
 
 static enum command_return
-client_process_command_list(Client *client, bool list_ok, GSList *list)
+client_process_command_list(Client *client, bool list_ok,
+			    std::list<std::string> &&list)
 {
 	enum command_return ret = COMMAND_RETURN_OK;
 	unsigned num = 0;
 
-	for (GSList *cur = list; cur != NULL; cur = g_slist_next(cur)) {
-		char *cmd = (char *)cur->data;
+	for (auto &&i : list) {
+		char *cmd = &*i.begin();
 
 		g_debug("command_process_list: process command \"%s\"",
 			cmd);
@@ -81,11 +82,11 @@ client_process_line(Client *client, char *line)
 			g_debug("[%u] process command list",
 				client->num);
 
-			auto cmd_list = client->cmd_list.Commit();
+			auto &&cmd_list = client->cmd_list.Commit();
 
 			ret = client_process_command_list(client,
 							  client->cmd_list.IsOKMode(),
-							  cmd_list);
+							  std::move(cmd_list));
 			g_debug("[%u] process command "
 				"list returned %i", client->num, ret);
 

src/CommandListBuilder.cxx

@@ -25,12 +25,7 @@
 void
 CommandListBuilder::Reset()
 {
-	for (GSList *tmp = list; tmp != NULL; tmp = g_slist_next(tmp))
-		g_free(tmp->data);
-
-	g_slist_free(list);
-
-	list = nullptr;
+	list.clear();
 	mode = Mode::DISABLED;
 }
 
@@ -42,6 +37,6 @@ CommandListBuilder::Add(const char *cmd)
 	if (size > client_max_command_list_size)
 		return false;
 
-	list = g_slist_prepend(list, g_strdup(cmd));
+	list.emplace_back(cmd);
 	return true;
 }

src/CommandListBuilder.hxx

@@ -20,7 +20,9 @@
 #ifndef MPD_COMMAND_LIST_BUILDER_HXX
 #define MPD_COMMAND_LIST_BUILDER_HXX
 
-#include <glib.h>
+#include <list>
+#include <string>
+
 #include <assert.h>
 
 class CommandListBuilder {
@@ -47,7 +49,7 @@ class CommandListBuilder {
 	/**
 	 * for when in list mode
 	 */
-	GSList *list;
+	std::list<std::string> list;
 
 	/**
 	 * Memory consumed by the list.
@@ -56,10 +58,7 @@ class CommandListBuilder {
 
 public:
 	CommandListBuilder()
-		:mode(Mode::DISABLED), list(nullptr), size(0) {}
-	~CommandListBuilder() {
-		Reset();
-	}
+		:mode(Mode::DISABLED), size(0) {}
 
 	/**
 	 * Is a command list currently being built?
@@ -86,7 +85,7 @@ public:
 	 * Begin building a command list.
 	 */
 	void Begin(bool ok) {
-		assert(list == nullptr);
+		assert(list.empty());
 		assert(mode == Mode::DISABLED);
 
 		mode = (Mode)ok;
@@ -100,13 +99,10 @@ public:
 	/**
 	 * Finishes the list and returns it.
 	 */
-	GSList *Commit() {
+	std::list<std::string> &&Commit() {
 		assert(IsActive());
 
-		/* for scalability reasons, we have prepended each new
-		   command; now we have to reverse it to restore the
-		   correct order */
-		return list = g_slist_reverse(list);
+		return std::move(list);
 	}
 };