From d329e2def0cabf5cdc52719aa49c7cf63e00fbae Mon Sep 17 00:00:00 2001
From: Solderpunk <solderpunk@sdf.org>
Date: Sat, 8 Dec 2018 16:51:25 +0000
Subject: Have main command loop and the type command 'subshell' share the same
 dispatch loop.

---
 telem.lua | 51 +++++++++++++++++++++++----------------------------
 1 file changed, 23 insertions(+), 28 deletions(-)

(limited to 'telem.lua')

diff --git a/telem.lua b/telem.lua
index d4d5b5f..9646d84 100755
--- a/telem.lua
+++ b/telem.lua
@@ -36,6 +36,23 @@ function getchar()
 	return char
 end
 
+function dispatch_loop(dispatch_table, quit_char, prompt_func, err_str)
+	repeat
+		-- Show prompt and read 1 char from keyboard
+		io.write(prompt_func())
+		local c = getchar()
+		if c ~= "\n" then io.write("\n") end
+		-- Use char as index into dispatch table
+		if c == "\n" then
+			-- pass
+		elseif dispatch_table[c] == nil then
+			print(err_str)
+		else
+			dispatch_table[c]()
+		end
+	until c == quit_char
+end
+
 -- Internals
 
 function update_boards()
@@ -276,20 +293,9 @@ function do_type()
 	current_thread_posts = get_posts(current_thread)
 	current_post_index = #current_thread_posts
 	do_type_show_post()
-	repeat
-		-- Show prompt and read one char
-		io.write("[f]irst, [n]ext, [p]rev, [l]last, [r]eply, [d]one > ")
-		c = getchar()
-		if c ~= "\n" then io.write("\n") end
-		-- Dispatch to sub-command
-		if c == "\n" then
-			-- pass
-		elseif type_dispatch[c] == nil then
-			print("Invalid command!")
-		elseif c ~= "\n" then
-			type_dispatch[c]()
-		end
-	until c == "d"
+	dispatch_loop(type_dispatch, "d",
+		function() return "[f]irst, [n]ext, [p]rev, [l]last, [r]eply, [d]one > " end,
+		"Unrecognised command!")
 end
 
 -- end of "type" command implementation
@@ -353,17 +359,6 @@ dispatch["b"] = do_board
 dispatch["c"] = do_unimplemented
 
 -- Infinite loop of command dispatch
-repeat
-	-- Show prompt and read 1 char from keyboard
-	io.write("["..current_board.."] COMMAND :> ")
-	c = getchar()
-	if c ~= "\n" then io.write("\n") end
-	-- Use char as index into dispatch table
-	if c == "\n" then
-		-- pass
-	elseif dispatch[c] == nil then
-		print("Unrecognised command, hit `h` for help.")
-	else
-		dispatch[c]()
-	end
-until c == "q"
+dispatch_loop(dispatch, "q",
+	function() return "["..current_board.."] COMMAND :> " end,
+	"Unrecognised command, hit `h` for help.")
-- 
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