add word lookup with stardict

frontend/ui/reader/readerdictionary.lua

@@ -7,33 +7,52 @@ function ReaderDictionary:init()
 	local dev_mod = Device:getModel()
 	if dev_mod == "KindlePaperWhite" or dev_mod == "KindleTouch" then
 		require("liblipclua")
-		JSON = require("JSON")
 		DEBUG("init lipc handler com.github.koreader.dictionary")
 		self.lipc_handle = lipc.init("com.github.koreader.dictionary")
 	end
+	JSON = require("JSON")
 end
 
 function ReaderDictionary:onLookupWord(word)
+	self:stardictLookup(word)
+end
+
+function ReaderDictionary:nativeDictLookup(word)
 	DEBUG("lookup word:", word)
 	--self:quickLookup()
-	if self.lipc_handle and JSON and word then
+	if self.lipc_handle and word then
 		self.lipc_handle:set_string_property(
 			"com.github.koreader.kpvbooklet.dict", "lookup", word)
 		local results_str = self.lipc_handle:get_string_property(
 			"com.github.koreader.kpvbooklet.word", word)
 		if results_str then
-			--DEBUG("def str:", word, definitions)
+			--DEBUG("result str:", word, results_str)
+			local ok, results_tab = pcall(JSON.decode, JSON, results_str)
+			--DEBUG("lookup result table:", word, results_tab)
+			if results_tab and results_tab[1] then
+				self:showDict(results_tab[1])
+			end
+		end
+	end
+end
+
+function ReaderDictionary:stardictLookup(word)
+	DEBUG("lookup word:", word)
+	if word then
+		local std_out = io.popen("./sdcv -nj "..'\"'..word..'\"', "r")
+		local results_str = std_out:read("*all")
+		if results_str then
+			--DEBUG("result str:", word, results_str)
 			local ok, results_tab = pcall(JSON.decode, JSON, results_str)
-			DEBUG("lookup result table:", word, results_tab)
-			if results_tab[1] then
-				self:quickLookup(results_tab[1])
+			--DEBUG("lookup result table:", word, results_tab)
+			if results_tab and results_tab[1] then
+				self:showDict(results_tab[1])
 			end
 		end
 	end
-	return true
 end
 
-function ReaderDictionary:quickLookup(result)
+function ReaderDictionary:showDict(result)
 --	UIManager:show(DictQuickLookup:new{
 --		dict = "Oxford Dictionary of English",
 --		definition = "coordination n. [mass noun] 1 the organization of the different elements of a \