Consolidate all code checking that user is at a board into a function.

1 files changed, 14 insertions, 18 deletions

diff --git a/telem.lua b/telem.lua
index d16ee24..d4d5b5f 100755
--- a/telem.lua
+++ b/telem.lua
@@ -48,6 +48,13 @@ function update_boards()
 	table.sort(boards)
 end
 
+function check_at_board()
+	if current_board == "" then
+		print("Not at any board!  Hit `l` to list boards, `g` to go to one.")
+	end
+	return current_board ~= ""
+end
+
 function get_threads(board)
 	local threads = {}
 	for threaddir in lfs.dir(path.join(_BBS_ROOT, "boards", board)) do
@@ -156,21 +163,15 @@ function do_list()
 end
 
 function do_messages()
-	if current_board == "" then
-		print("Not at any board!  Hit `l` to list boards, `g` to go to one.")
-	else
-		current_board_threads = get_threads(current_board)
-		for i, thread in ipairs(current_board_threads) do
-			print(tostring(i), os.date("%x %H:%M", thread.timestamp), thread.author, thread.subject, "("..tostring(thread.post_count).." posts)")
-		end
+	if not check_at_board() then return end
+	current_board_threads = get_threads(current_board)
+	for i, thread in ipairs(current_board_threads) do
+		print(tostring(i), os.date("%x %H:%M", thread.timestamp), thread.author, thread.subject, "("..tostring(thread.post_count).." posts)")
 	end
 end
 
 function do_new()
-	if current_board == "" then
-		print("Not at any board!")
-		return
-	end
+	if not check_at_board() then return end
 	-- Get subject for new thread
 	io.write("Subject? ")
 	local subject = io.read()
@@ -264,9 +265,7 @@ type_dispatch["r"] = do_type_reply
 type_dispatch["d"] = function() return end
 
 function do_type()
-	if current_board == "" then
-		print("Not at any board!  Hit `l` to list boards, `g` to go to one.")
-	end
+	if not check_at_board() then return end
 	io.write("Read which thread? ")
 	local thread_id = tonumber(io.read())
 	if not thread_id or thread_id < 0 or thread_id > #current_board_threads then
@@ -300,10 +299,7 @@ function do_quit()
 end
 
 function do_reply()
-	if current_board == "" then
-		print("Not at any board!")
-		return
-	end
+	if not check_at_board() then return end
 	io.write("Reply to which thread? ")
 	local thread_id = tonumber(io.read())
 	if not thread_id or thread_id < 0 or thread_id > #current_board_threads then