moved logging into fs_log.lua and logged in extra npc log files

config.lua

@@ -112,6 +112,9 @@ yl_speak_up.inventory_path = "yl_speak_up_inventories"
 -- Where shall player-specific varialbes (usually quest states) be stored?
 yl_speak_up.player_vars_save_file = "yl_speak_up_player_vars"
 
+-- Where to store the logfiles for the individual NPC
+yl_speak_up.log_path = "yl_speak_up_log"
+
 -- amount of time in seconds that has to have passed before the above file will be saved again
 -- (more time can pass if no variable is changed)
 yl_speak_up.player_vars_min_save_time = 60
@@ -246,4 +249,3 @@ local function read_skins_and_capes_from_folders(races)
     end
 end
 read_skins_and_capes_from_folders({"dwarf","elf","goblin","human","npc","orc"})
-

fs_log.lua

@@ -0,0 +1,36 @@
+-- handle logging
+
+
+-- log changes done by players or admins to NPCs
+yl_speak_up.log_change = function(pname, n_id, text)
+	-- make sure all variables are defined
+	if(not(pname)) then
+		pname = "- unkown player -"
+	end
+	if(not(n_id)) then
+		n_id = "- unknown NPC -"
+	end
+	if(not(text)) then
+		text = "- no text given -"
+	end
+	-- we don't want newlines in the texts
+	text = string.gsub(text, "\n", "\\n")
+
+	-- log in debug.txt
+	local log_text = "<"..tostring(n_id).."> ["..tostring(pname).."]: "..text
+	minetest.log("yl_speak_up "..log_text)
+
+	-- log in a file for each npc so that it can be shown when needed
+	-- date needs to be inserted manually (minetest.log does it automaticly);
+	-- each file logs just one npc, so n_id is not important
+	log_text = tostring(os.date("%Y-%m-%d %H:%M:%S ")..tostring(pname).." "..text.."\n")
+	-- actually append to the logfile
+	local file, err = io.open(yl_speak_up.worldpath..yl_speak_up.log_path..DIR_DELIM..
+					"log_"..n_id..".txt", "a")
+	if err then
+		minetest.log("[yl_speak_up] Error saving NPC logfile: "..minetest.serialize(err))
+		return
+	end
+	file:write(log_text)
+	file:close()
+end

functions.lua

@@ -528,27 +528,3 @@ yl_speak_up.may_edit_npc = function(player, n_id)
 	  or (yl_speak_up.speak_to[pname]
 	  and yl_speak_up.speak_to[pname].may_edit_this_npc))
 end
-
-
--- log changes done by players or admins to NPCs
-yl_speak_up.log_change = function(pname, n_id, text)
-	-- make sure all variables are defined
-	if(not(pname)) then
-		pname = "- unkown player -"
-	end
-	if(not(n_id)) then
-		n_id = "- unknown NPC -"
-	end
-	if(not(text)) then
-		text = "- no text given -"
-	end
-	-- we don't want newlines in the texts
-	text = string.gsub(text, "\n", "\\n")
-
-	local log_text = "<"..tostring(n_id).."> ["..tostring(pname).."]: "..text
-	-- log in general logfile
-	minetest.log("yl_speak_up "..log_text)
-	-- log with timestamp
-	local log_text = tostring(os.time())..log_text
-	-- TODO: log in a file for each npc and show it on demand?
-end

init.lua

@@ -28,6 +28,8 @@ yl_speak_up.custom_server_functions = {}
 
 -- the server-specific configuration
 dofile(modpath .. "config.lua")
+-- logging and showing the log
+dofile(modpath .. "fs_log.lua")
 -- players *and* npc need privs for certain things
 dofile(modpath .. "privs.lua")
 -- contains the command to hand out privs to NPC
@@ -127,6 +129,7 @@ end
 
 minetest.mkdir(yl_speak_up.worldpath..yl_speak_up.path)
 minetest.mkdir(yl_speak_up.worldpath..yl_speak_up.inventory_path)
+minetest.mkdir(yl_speak_up.worldpath..yl_speak_up.log_path)
 
 yl_speak_up.mob_table = yl_speak_up.init_mob_table() or {}