From f22b2301fae33e0d0b38ec7ae2900e761a97f08c Mon Sep 17 00:00:00 2001
From: Qingping Hou <dave2008713@gmail.com>
Date: Tue, 12 Mar 2013 12:51:00 +0800
Subject: [PATCH] add last documents menu entry

---
 frontend/settings.lua | 15 +++++++++++++++
 reader.lua            | 31 ++++++++++++++++++++++++++++---
 2 files changed, 43 insertions(+), 3 deletions(-)

diff --git a/frontend/settings.lua b/frontend/settings.lua
index 638484488..7a691dd9c 100644
--- a/frontend/settings.lua
+++ b/frontend/settings.lua
@@ -15,6 +15,21 @@ function DocSettings:getHistoryPath(fullpath)
 	return "./history/["..basename:gsub("/","#").."] "..filename..".lua"
 end
 
+function DocSettings:getPathFromHistory(hist_name)
+	-- 1. select everything included in brackets
+	local s = string.match(hist_name,"%b[]")
+	-- 2. crop the bracket-sign from both sides
+	-- 3. and finally replace decorative signs '#' to dir-char '/'
+	return string.gsub(string.sub(s,2,-3),"#","/")
+end
+
+function DocSettings:getNameFromHistory(hist_name)
+	-- at first, search for path length
+	local s = string.len(string.match(hist_name,"%b[]"))
+	-- and return the rest of string without 4 last characters (".lua")
+	return string.sub(hist_name, s+2, -5)
+end
+
 function DocSettings:open(docfile)
 	local conf_path = nil
 	if docfile == ".reader" then
diff --git a/reader.lua b/reader.lua
index e93839a4a..a0e8c9dc6 100755
--- a/reader.lua
+++ b/reader.lua
@@ -27,6 +27,32 @@ HomeMenu = InputContainer:new{
 }
 
 function HomeMenu:setUpdateItemTable()
+	function readHistDir(order_arg, re)
+		local pipe_out = io.popen("ls "..order_arg.." -1 ./history")
+		for f in pipe_out:lines() do
+			table.insert(re, {
+				dir = DocSettings:getPathFromHistory(f),
+				name = DocSettings:getNameFromHistory(f),
+			})
+		end
+	end
+
+	local hist_sub_item_table = {}
+	local last_files = {}
+	readHistDir("-c", last_files)
+	for _,v in pairs(last_files) do
+		table.insert(hist_sub_item_table, {
+			text = v.name,
+			callback = function()
+				showReader(v.dir .. "/" .. v.name)
+			end
+		})
+	end
+	table.insert(self.item_table, {
+		text = "Last documents",
+		sub_item_table = hist_sub_item_table,
+	})
+
 	table.insert(self.item_table, {
 		text = "Exit",
 		callback = function()
@@ -36,9 +62,8 @@ function HomeMenu:setUpdateItemTable()
 end
 
 function HomeMenu:onTapShowMenu()
-	if #self.item_table == 0 then
-		self:setUpdateItemTable()
-	end
+	self.item_table = {}
+	self:setUpdateItemTable()
 
 	local home_menu = Menu:new{
 		title = "Home menu",