Add example for a Lua file handler

test/filehandler.lua

@@ -0,0 +1,93 @@
+function send_ok()
+	mg.write("HTTP/1.0 200 OK\r\n")
+	mg.write("Connection: close\r\n")
+	mg.write("Date: " .. os.date("%a, %d %b %Y %H:%M:%S GMT") .. "\r\n")
+end
+
+
+function send_not_found()
+	mg.write("HTTP/1.0 404 Not Found\r\n")
+	mg.write("Connection: close\r\n")
+	mg.write("Date: " .. os.date("%a, %d %b %Y %H:%M:%S GMT") .. "\r\n")
+end
+
+
+handler = "filehandler.lua"
+sub_uri = mg.request_info.uri:sub(#handler+2)
+filename = "D:\\civetweb\\civetweb" .. sub_uri
+attr = lfs.attributes(filename)
+
+--[[
+if not attr then
+	send_not_found()
+	mg.write("\r\n")
+	mg.write("File " .. sub_uri .. " not available")
+	return
+end
+]]
+
+if mg.request_info.request_method == "GET" then
+	-- send_file will handle 404 internally
+	mg.send_file(filename)
+	return
+
+elseif mg.request_info.request_method == "HEAD" then
+	-- send_file can handle "GET" and "HEAD"
+	mg.send_file(filename)
+	return
+
+elseif mg.request_info.request_method == "PUT" then
+	local f = io.open(filename, "w")
+	if (not f) then
+		mg.write("HTTP/1.0 500 Internal Server Error\r\n")
+		mg.write("Connection: close\r\n")
+		mg.write("Date: " .. os.date("%a, %d %b %Y %H:%M:%S GMT") .. "\r\n")
+		mg.write("\r\n")
+		return
+	end
+
+	mg.write("HTTP/1.0 201 Created\r\n")
+	mg.write("Connection: close\r\n")
+	mg.write("Date: " .. os.date("%a, %d %b %Y %H:%M:%S GMT") .. "\r\n")
+	mg.write("\r\n")
+	repeat
+		local buf = mg.read();
+		if (buf) then
+			f:write(buf)
+		end
+	until (not buf);
+	f:close()
+
+	mg.write("HTTP/1.0 201 Created\r\n")
+	mg.write("Connection: close\r\n")
+	mg.write("Date: " .. os.date("%a, %d %b %Y %H:%M:%S GMT") .. "\r\n")
+	mg.write("\r\n")
+	return
+
+elseif mg.request_info.request_method == "DELETE" then
+	if not attr then
+		send_not_found()
+		mg.write("\r\n")
+		mg.write("File " .. sub_uri .. " not available")
+		return
+	end
+	os.remove(filename)
+	mg.write("HTTP/1.0 204 No Content\r\n")
+	mg.write("Connection: close\r\n")
+	mg.write("Date: " .. os.date("%a, %d %b %Y %H:%M:%S GMT") .. "\r\n")
+	mg.write("\r\n")
+	return
+
+elseif mg.request_info.request_method == "OPTIONS" then
+	send_ok()
+	mg.write("Allow: GET, HEAD, PUT, DELETE, OPTIONS\r\n")
+	mg.write("\r\n")
+	return
+
+else
+	mg.write("HTTP/1.0 405 Method Not Allowed\r\n")
+	mg.write("Connection: close\r\n")
+	mg.write("Date: " .. os.date("%a, %d %b %Y %H:%M:%S GMT") .. "\r\n")
+	mg.write("\r\n")
+	return
+end