local BD = require("ui/bidi") local DataStorage = require("datastorage") --local DownloadBackend = require("internaldownloadbackend") --local DownloadBackend = require("luahttpdownloadbackend") local DownloadBackend = require("epubdownloadbackend") local ReadHistory = require("readhistory") local FFIUtil = require("ffi/util") local FeedView = require("feed_view") local InfoMessage = require("ui/widget/infomessage") local LuaSettings = require("frontend/luasettings") local UIManager = require("ui/uimanager") local KeyValuePage = require("ui/widget/keyvaluepage") local InputDialog = require("ui/widget/inputdialog") local MultiConfirmBox = require("ui/widget/multiconfirmbox") local NetworkMgr = require("ui/network/manager") local Persist = require("persist") local WidgetContainer = require("ui/widget/container/widgetcontainer") local dateparser = require("lib.dateparser") local logger = require("logger") local util = require("util") local _ = require("gettext") local T = FFIUtil.template local NewsDownloader = WidgetContainer:new{ name = "news_downloader", initialized = false, feed_config_file = "feed_config.lua", feed_config_path = nil, news_config_file = "news_settings.lua", settings = nil, download_dir_name = "news", download_dir = nil, file_extension = ".epub", config_key_custom_dl_dir = "custom_dl_dir", empty_feed = { [1] = "https://", limit = 5, download_full_article = true, include_images = true, enable_filter = false, filter_element = "" }, kv = {} } local FEED_TYPE_RSS = "rss" local FEED_TYPE_ATOM = "atom" --local initialized = false --local feed_config_file_name = "feed_config.lua" --local news_downloader_config_file = "news_downloader_settings.lua -- If a title looks like blabla it'll just be feed.title. -- If a title looks like blabla then we get a table -- where [1] is the title string and the attributes are also available. local function getFeedTitle(possible_title) if type(possible_title) == "string" then return util.htmlEntitiesToUtf8(possible_title) elseif possible_title[1] and type(possible_title[1]) == "string" then return util.htmlEntitiesToUtf8(possible_title[1]) end end -- There can be multiple links. -- For now we just assume the first link is probably the right one. --- @todo Write unit tests. -- Some feeds that can be used for unit test. -- http://fransdejonge.com/feed/ for multiple links. -- https://github.com/koreader/koreader/commits/master.atom for single link with attributes. local function getFeedLink(possible_link) local E = {} if type(possible_link) == "string" then return possible_link elseif (possible_link._attr or E).href then return possible_link._attr.href elseif ((possible_link[1] or E)._attr or E).href then return possible_link[1]._attr.href end end function NewsDownloader:init() self.ui.menu:registerToMainMenu(self) end function NewsDownloader:addToMainMenu(menu_items) menu_items.news_downloader = { text = _("News downloader (RSS/Atom)"), sub_item_table_func = function() return self:getSubMenuItems() end, } end function NewsDownloader:getSubMenuItems() self:lazyInitialization() local sub_item_table sub_item_table = { { text = _("Go to news folder"), callback = function() self:openDownloadsFolder() end, }, { text = _("Sync news feeds"), keep_menu_open = true, callback = function(touchmenu_instance) NetworkMgr:runWhenOnline(function() self:loadConfigAndProcessFeedsWithUI(touchmenu_instance) end) end, }, { text = _("Edit news feeds"), keep_menu_open = true, callback = function() local Trapper = require("ui/trapper") Trapper:wrap(function() self:viewFeedList() end) end, }, { text = _("Settings"), sub_item_table = { { text = _("Set download folder"), keep_menu_open = true, callback = function() self:setCustomDownloadDirectory() end, }, { text = _("Never download images"), keep_menu_open = true, checked_func = function() return self.settings:isTrue("never_download_images") end, callback = function() self.settings:toggle("never_download_images") self.settings:flush() end, }, { text = _("Delete all downloaded items"), keep_menu_open = true, callback = function() local Trapper = require("ui/trapper") Trapper:wrap(function() local should_delete = Trapper:confirm( _("Are you sure you want to delete all downloaded items?"), _("Cancel"), _("Delete") ) if should_delete then self:removeNewsButKeepFeedConfig() Trapper:reset() else Trapper:reset() end end) end, }, }, }, { text = _("About"), keep_menu_open = true, callback = function() UIManager:show(InfoMessage:new{ text = T(_("News downloader retrieves RSS and Atom news entries and stores them to:\n%1\n\nEach entry is a separate EPUB file that can be browsed by KOReader.\nFeeds can be configured with download limits and other customization through the Edit Feeds menu item."), BD.dirpath(self.download_dir)) }) end, }, } return sub_item_table end -- lazyInitialization sets up variables that point to the -- Downloads folder and the feeds configuration file. function NewsDownloader:lazyInitialization() if not self.initialized then logger.dbg("NewsDownloader: obtaining news folder") self.settings = LuaSettings:open(("%s/%s"):format(DataStorage:getSettingsDir(), self.news_config_file)) -- Check to see if a custom download directory has been set. if self.settings:has(self.config_key_custom_dl_dir) then self.download_dir = self.settings:readSetting(self.config_key_custom_dl_dir) else self.download_dir = ("%s/%s/"):format( DataStorage:getFullDataDir(), self.download_dir_name) end logger.dbg("NewsDownloader: Custom directory set to:", self.download_dir) -- If the directory doesn't exist we will create it. if not lfs.attributes(self.download_dir, "mode") then logger.dbg("NewsDownloader: Creating initial directory") lfs.mkdir(self.download_dir) end -- Now set the path to the feed configuration file. self.feed_config_path = self.download_dir .. self.feed_config_file -- If the configuration file doesn't exist create it. if not lfs.attributes(self.feed_config_path, "mode") then logger.dbg("NewsDownloader: Creating initial feed config.") FFIUtil.copyFile(FFIUtil.joinPath(self.path, self.feed_config_file), self.feed_config_path) end self.initialized = true end end function NewsDownloader:loadConfigAndProcessFeeds(touchmenu_instance) local UI = require("ui/trapper") logger.dbg("force repaint due to upcoming blocking calls") local ok, feed_config = pcall(dofile, self.feed_config_path) if not ok or not feed_config then UI:info(T(_("Invalid configuration file. Detailed error message:\n%1"), feed_config)) return end -- If the file contains no table elements, then the user hasn't set any feeds. if #feed_config <= 0 then logger.err("NewsDownloader: empty feed list.", self.feed_config_path) local should_edit_feed_list = UI:confirm( T(_("Feed list is empty. If you want to download news, you'll have to add a feed first.")), _("Close"), _("Edit feed list") ) if should_edit_feed_list then -- Show the user a blank feed view so they can -- add a feed to their list. local feed_item_vc = FeedView:getItem( 1, self.empty_feed, function(id, edit_key, value) self:editFeedAttribute(id, edit_key, value) end ) self:viewFeedItem( feed_item_vc ) end return end local never_download_images = self.settings:isTrue("never_download_images") local unsupported_feeds_urls = {} local total_feed_entries = #feed_config local feed_message for idx, feed in ipairs(feed_config) do local url = feed[1] local limit = feed.limit local download_full_article = feed.download_full_article == nil or feed.download_full_article local include_images = not never_download_images and feed.include_images local enable_filter = feed.enable_filter or feed.enable_filter == nil local filter_element = feed.filter_element or feed.filter_element == nil -- Check if the two required attributes are set. if url and limit then feed_message = T(_("Processing %1/%2:\n%3"), idx, total_feed_entries, BD.url(url)) UI:info(feed_message) -- Process the feed source. self:processFeedSource( url, tonumber(limit), unsupported_feeds_urls, download_full_article, include_images, feed_message, enable_filter, filter_element) else logger.warn("NewsDownloader: invalid feed config entry.", feed) end end if #unsupported_feeds_urls <= 0 then -- When no errors are present, we get a happy message. feed_message = _("Downloading news finished.") else -- When some errors are present, we get a sour message that includes -- information about the source of the error. local unsupported_urls = "" for key, value in pairs(unsupported_feeds_urls) do -- Create the error message. unsupported_urls = unsupported_urls .. " " .. value[1] .. " " .. value[2] -- Not sure what this does. if key ~= #unsupported_feeds_urls then unsupported_urls = BD.url(unsupported_urls) .. ", " end end -- Tell the user there were problems. feed_message = _("Downloading news finished with errors.") -- Display a dialogue that requires the user to acknowledge -- that errors occured. UI:confirm( T(_([[ Could not process some feeds. Unsupported format in: %1. Please review your feed configuration file.]]) , unsupported_urls), _("Continue"), "" ) end -- Clear the info widgets before displaying the next ui widget. UI:clear() -- Check to see if this method was called from the menu. If it was, -- we will have gotten a touchmenu_instance. This will context gives the user -- two options about what to do next, which are handled by this block. if touchmenu_instance then -- Ask the user if they want to go to their downloads folder -- or if they'd rather remain at the menu. feed_message = feed_message .. _("Go to download folder?") local should_go_to_downloads = UI:confirm( feed_message, _("Close"), _("Go to downloads") ) if should_go_to_downloads then -- Go to downloads folder. UI:clear() self:openDownloadsFolder() touchmenu_instance:closeMenu() NetworkMgr:afterWifiAction() return else -- Return to the menu. NetworkMgr:afterWifiAction() return end end return end function NewsDownloader:loadConfigAndProcessFeedsWithUI(touchmenu_instance) local Trapper = require("ui/trapper") Trapper:wrap(function() self:loadConfigAndProcessFeeds(touchmenu_instance) end) end function NewsDownloader:processFeedSource(url, limit, unsupported_feeds_urls, download_full_article, include_images, message, enable_filter, filter_element) local ok, response = pcall(function() return DownloadBackend:getResponseAsString(url) end) local feeds -- Check to see if a response is available to deserialize. if ok then feeds = self:deserializeXMLString(response) end -- If the response is not available (for a reason that we don't know), -- add the URL to the unsupported feeds list. if not ok or not feeds then local error_message if not ok then error_message = _("(Reason: Failed to download content)") else error_message = _("(Reason: Error during feed deserialization)") end table.insert( unsupported_feeds_urls, { url, error_message } ) return end -- Check to see if the feed uses RSS. local is_rss = feeds.rss and feeds.rss.channel and feeds.rss.channel.title and feeds.rss.channel.item and feeds.rss.channel.item[1] and feeds.rss.channel.item[1].title and feeds.rss.channel.item[1].link -- Check to see if the feed uses Atom. local is_atom = feeds.feed and feeds.feed.title and feeds.feed.entry[1] and feeds.feed.entry[1].title and feeds.feed.entry[1].link -- Process the feeds accordingly. if is_atom then ok = pcall(function() return self:processFeed( FEED_TYPE_ATOM, feeds, limit, download_full_article, include_images, message, enable_filter, filter_element ) end) elseif is_rss then ok = pcall(function() return self:processFeed( FEED_TYPE_RSS, feeds, limit, download_full_article, include_images, message, enable_filter, filter_element ) end) end -- If the feed can't be processed, or it is neither -- Atom or RSS, then add it to the unsupported feeds list -- and return an error message. if not ok or (not is_rss and not is_atom) then local error_message if not ok then error_message = _("(Reason: Failed to download content)") elseif not is_rss then error_message = _("(Reason: Couldn't process RSS)") elseif not is_atom then error_message = _("(Reason: Couldn't process Atom)") end table.insert( unsupported_feeds_urls, { url, error_message } ) end end function NewsDownloader:deserializeXMLString(xml_str) -- uses LuaXML https://github.com/manoelcampos/LuaXML -- The MIT License (MIT) -- Copyright (c) 2016 Manoel Campos da Silva Filho -- see: koreader/plugins/newsdownloader.koplugin/lib/LICENSE_LuaXML local treehdl = require("lib/handler") local libxml = require("lib/xml") -- Instantiate the object that parses the XML file as a Lua table. local xmlhandler = treehdl.simpleTreeHandler() -- Instantiate the object that parses the XML to a Lua table. local ok = pcall(function() libxml.xmlParser(xmlhandler):parse(xml_str) end) if not ok then return end return xmlhandler.root end function NewsDownloader:processFeed(feed_type, feeds, limit, download_full_article, include_images, message, enable_filter, filter_element) local feed_title local feed_item local total_items -- Setup the above vars based on feed type. if feed_type == FEED_TYPE_RSS then feed_title = util.htmlEntitiesToUtf8(feeds.rss.channel.title) feed_item = feeds.rss.channel.item total_items = (limit == 0) and #feeds.rss.channel.item or limit else feed_title = getFeedTitle(feeds.feed.title) feed_item = feeds.feed.entry total_items = (limit == 0) and #feeds.feed.entry or limit end -- Get the path to the output directory. local feed_output_dir = ("%s%s/"):format( self.download_dir, util.getSafeFilename(util.htmlEntitiesToUtf8(feed_title))) -- Create the output directory if it doesn't exist. if not lfs.attributes(feed_output_dir, "mode") then lfs.mkdir(feed_output_dir) end -- Download the feed for index, feed in pairs(feed_item) do -- If limit has been met, stop downloading feed. if limit ~= 0 and index - 1 == limit then break end -- Create a message to display during processing. local article_message = T( _("%1\n\nFetching article %2/%3:"), message, index, total_items ) -- Get the feed description. local feed_description if feed_type == FEED_TYPE_RSS then feed_description = feed.description else feed_description = feed.summary end -- Download the article. if download_full_article then self:downloadFeed( feed, feed_output_dir, include_images, article_message, enable_filter, filter_element ) else self:createFromDescription( feed, feed_description, feed_output_dir, include_images, article_message ) end end end local function parseDate(dateTime) -- Uses lua-feedparser https://github.com/slact/lua-feedparser -- feedparser is available under the (new) BSD license. -- see: koreader/plugins/newsdownloader.koplugin/lib/LICENCE_lua-feedparser local date = dateparser.parse(dateTime) return os.date("%y-%m-%d_%H-%M_", date) end -- This appears to be used by Atom feeds in processFeed. local function getTitleWithDate(feed) local title = util.getSafeFilename(getFeedTitle(feed.title)) if feed.updated then title = parseDate(feed.updated) .. title elseif feed.pubDate then title = parseDate(feed.pubDate) .. title elseif feed.published then title = parseDate(feed.published) .. title end return title end function NewsDownloader:downloadFeed(feed, feed_output_dir, include_images, message, enable_filter, filter_element) local title_with_date = getTitleWithDate(feed) local news_file_path = ("%s%s%s"):format(feed_output_dir, title_with_date, self.file_extension) local file_mode = lfs.attributes(news_file_path, "mode") if file_mode == "file" then logger.dbg("NewsDownloader:", news_file_path, "already exists. Skipping") else logger.dbg("NewsDownloader: News file will be stored to :", news_file_path) local article_message = T(_("%1\n%2"), message, title_with_date) local link = getFeedLink(feed.link) local html = DownloadBackend:loadPage(link) DownloadBackend:createEpub(news_file_path, html, link, include_images, article_message, enable_filter, filter_element) end end function NewsDownloader:createFromDescription(feed, content, feed_output_dir, include_images, message) local title_with_date = getTitleWithDate(feed) local news_file_path = ("%s%s%s"):format(feed_output_dir, title_with_date, self.file_extension) local file_mode = lfs.attributes(news_file_path, "mode") if file_mode == "file" then logger.dbg("NewsDownloader:", news_file_path, "already exists. Skipping") else logger.dbg("NewsDownloader: News file will be stored to :", news_file_path) local article_message = T(_("%1\n%2"), message, title_with_date) local footer = _("This is just a description of the feed. To download the full article instead, go to the News Downloader settings and change 'download_full_article' to 'true'.") local html = string.format([[ %s

%s

%s

]], feed.title, feed.title, content, footer) local link = getFeedLink(feed.link) DownloadBackend:createEpub(news_file_path, html, link, include_images, article_message) end end function NewsDownloader:removeNewsButKeepFeedConfig() logger.dbg("NewsDownloader: Removing news from :", self.download_dir) for entry in lfs.dir(self.download_dir) do if entry ~= "." and entry ~= ".." and entry ~= self.feed_config_file then local entry_path = self.download_dir .. "/" .. entry local entry_mode = lfs.attributes(entry_path, "mode") if entry_mode == "file" then os.remove(entry_path) elseif entry_mode == "directory" then FFIUtil.purgeDir(entry_path) end end end UIManager:show(InfoMessage:new{ text = _("All downloaded news feed items deleted.") }) end function NewsDownloader:setCustomDownloadDirectory() require("ui/downloadmgr"):new{ onConfirm = function(path) logger.dbg("NewsDownloader: set download directory to: ", path) self.settings:saveSetting(self.config_key_custom_dl_dir, ("%s/"):format(path)) self.settings:flush() logger.dbg("NewsDownloader: Coping to new download folder previous self.feed_config_file from: ", self.feed_config_path) FFIUtil.copyFile(self.feed_config_path, ("%s/%s"):format(path, self.feed_config_file)) self.initialized = false self:lazyInitialization() end, }:chooseDir() end function NewsDownloader:viewFeedList() local UI = require("ui/trapper") UI:info(_("Loading news feed list…")) -- Protected call to see if feed config path returns a file that can be opened. local ok, feed_config = pcall(dofile, self.feed_config_path) if not ok or not feed_config then local change_feed_config = UI:confirm( _("Could not open feed list. Feeds configuration file is invalid."), _("Close"), _("View file") ) if change_feed_config then self:changeFeedConfig() end return end UI:clear() -- See if the config file contains any feed items if #feed_config <= 0 then logger.err("NewsDownloader: empty feed list.", self.feed_config_path) -- Why not ask the user if they want to add one? -- Or, in future, move along to our list UI with an entry for new feeds --return end local view_content = FeedView:getList( feed_config, function(feed_item_vc) self:viewFeedItem( feed_item_vc ) end, function(id, edit_key, value) self:editFeedAttribute(id, edit_key, value) end, function(id) self:deleteFeed(id) end ) -- Add a "Add new feed" button with callback table.insert( view_content, { _("Add new feed"), "", callback = function() -- Prepare the view with all the callbacks for editing the attributes local feed_item_vc = FeedView:getItem( #feed_config + 1, self.empty_feed, function(id, edit_key, value) self:editFeedAttribute(id, edit_key, value) end ) self:viewFeedItem( feed_item_vc ) end } ) -- Show the list of feeds. if #self.kv ~= 0 then UIManager:close(self.kv) end self.kv = KeyValuePage:new{ title = _("RSS/Atom feeds"), value_overflow_align = "right", kv_pairs = view_content, callback_return = function() UIManager:close(self.kv) end } UIManager:show(self.kv) end function NewsDownloader:viewFeedItem(data) if #self.kv ~= 0 then UIManager:close(self.kv) end self.kv = KeyValuePage:new{ title = _("Edit Feed"), value_overflow_align = "left", kv_pairs = data, callback_return = function() self:viewFeedList() end } UIManager:show(self.kv) end function NewsDownloader:editFeedAttribute(id, key, value) local kv = self.kv -- There are basically two types of values: string (incl. numbers) -- and booleans. This block chooses what type of value our -- attribute will need and displays the corresponding dialog. if key == FeedView.URL or key == FeedView.LIMIT or key == FeedView.FILTER_ELEMENT then local title local input_type local description if key == FeedView.URL then title = _("Edit feed URL") input_type = "string" elseif key == FeedView.LIMIT then title = _("Edit feed limit") description = _("Set to 0 for no limit to how many items are downloaded") input_type = "number" elseif key == FeedView.FILTER_ELEMENT then title = _("Edit filter element.") description = _("Filter based on the given CSS selector. E.g.: name_of_css.element.class") input_type = "string" else return false end local input_dialog input_dialog = InputDialog:new{ title = title, input = value, input_type = input_type, description = description, buttons = { { { text = _("Cancel"), id = "close", callback = function() UIManager:close(input_dialog) UIManager:show(kv) end, }, { text = _("Save"), is_enter_default = true, callback = function() UIManager:close(input_dialog) self:updateFeedConfig(id, key, input_dialog:getInputValue()) end, }, } }, } UIManager:show(input_dialog) input_dialog:onShowKeyboard() return true else local text if key == FeedView.DOWNLOAD_FULL_ARTICLE then text = _("Download full article?") elseif key == FeedView.INCLUDE_IMAGES then text = _("Include images?") elseif key == FeedView.ENABLE_FILTER then text = _("Enable CSS filter?") end local multi_box multi_box= MultiConfirmBox:new{ text = text, choice1_text = _("Yes"), choice1_callback = function() UIManager:close(multi_box) self:updateFeedConfig(id, key, true) end, choice2_text = _("No"), choice2_callback = function() UIManager:close(multi_box) self:updateFeedConfig(id, key, false) end, cancel_callback = function() UIManager:close(multi_box) UIManager:show(kv) end, } UIManager:show(multi_box) end end function NewsDownloader:updateFeedConfig(id, key, value) local UI = require("ui/trapper") -- Because this method is called at the menu, -- we might not have an active view. So this conditional -- statement avoids closing a null reference. if #self.kv ~= 0 then UIManager:close(self.kv) end -- It's possible that we will get a null value. -- This block catches that possibility. if id ~= nil and key ~= nil and value ~= nil then -- This logger is a bit opaque because T() wasn't playing nice with booleans logger.dbg("Newsdownloader: attempting to update config:") else logger.dbg("Newsdownloader: null value supplied to update. Not updating config") return end local ok, feed_config = pcall(dofile, self.feed_config_path) if not ok or not feed_config then UI:info(T(_("Invalid configuration file. Detailed error message:\n%1"), feed_config)) return end -- If the file contains no table elements, then the user hasn't set any feeds. if #feed_config <= 0 then logger.dbg("NewsDownloader: empty feed list.", self.feed_config_path) end -- Check to see if the id is larger than the number of feeds. If it is, -- then we know this is a new add. Insert the base array. if id > #feed_config then table.insert( feed_config, self.empty_feed ) end local new_config = {} -- In this loop, we cycle through the feed items. A series of -- conditionals checks to see if we are at the right id -- and key (i.e.: the key that triggered this function. -- If we are at the right spot, we overrite (or create) the value for idx, feed in ipairs(feed_config) do -- Check to see if this is the correct feed to update. if idx == id then if key == FeedView.URL then if feed[1] then -- If the value exists, then it's been set. So all we do -- is overwrite the value. feed[1] = value else -- If the value doesn't exist, then we need to set it. -- So we insert it into the table. table.insert( feed, { value } ) end elseif key == FeedView.LIMIT then if feed.limit then feed.limit = value else table.insert( feed, { "limit", value } ) end elseif key == FeedView.DOWNLOAD_FULL_ARTICLE then if feed.download_full_article ~= nil then feed.download_full_article = value else table.insert( feed, { "download_full_article", value } ) end elseif key == FeedView.INCLUDE_IMAGES then if feed.include_images ~= nil then feed.include_images = value else table.insert( feed, { "include_images", value } ) end elseif key == FeedView.ENABLE_FILTER then if feed.enable_filter ~= nil then feed.enable_filter = value else table.insert( feed, { "enable_filter", value } ) end elseif key == FeedView.FILTER_ELEMENT then if feed.filter_element then feed.filter_element = value else table.insert( feed, { "filter_element", value } ) end end end -- Now we insert the updated (or newly created) feed into the -- new config feed that we're building in this loop. table.insert( new_config, feed ) end -- Save the config logger.dbg("NewsDownloader: config to save", new_config) self:saveConfig(new_config) -- Refresh the view local feed_item_vc = FeedView:getItem( id, new_config[id], function(cb_id, cb_edit_key, cb_value) self:editFeedAttribute(cb_id, cb_edit_key, cb_value) end ) self:viewFeedItem( feed_item_vc ) end function NewsDownloader:deleteFeed(id) local UI = require("ui/trapper") logger.dbg("Newsdownloader: attempting to delete feed") -- Check to see if we can get the config file. local ok, feed_config = pcall(dofile, self.feed_config_path) if not ok or not feed_config then UI:info(T(_("Invalid configuration file. Detailed error message:\n%1"), feed_config)) return end -- In this loop, we cycle through the feed items. A series of -- conditionals checks to see if we are at the right id -- and key (i.e.: the key that triggered this function. -- If we are at the right spot, we overrite (or create) the value local new_config = {} for idx, feed in ipairs(feed_config) do -- Check to see if this is the correct feed to update. if idx ~= id then table.insert( new_config, feed ) end end -- Save the config local Trapper = require("ui/trapper") Trapper:wrap(function() logger.dbg("NewsDownloader: config to save", new_config) self:saveConfig(new_config) end) -- Refresh the view self:viewFeedList() end function NewsDownloader:saveConfig(config) local UI = require("ui/trapper") UI:info(_("Saving news feed list…")) local persist = Persist:new{ path = self.feed_config_path } local ok = persist:save(config) if not ok then UI:info(_("Could not save news feed config.")) else UI:info(_("News feed config updated successfully.")) end UI:reset() end function NewsDownloader:changeFeedConfig() local feed_config_file = io.open(self.feed_config_path, "rb") local config = feed_config_file:read("*all") feed_config_file:close() local config_editor logger.info("NewsDownloader: opening configuration file", self.feed_config_path) config_editor = InputDialog:new{ title = T(_("Config: %1"), BD.filepath(self.feed_config_path)), input = config, input_type = "string", para_direction_rtl = false, -- force LTR fullscreen = true, condensed = true, allow_newline = true, cursor_at_end = false, add_nav_bar = true, reset_callback = function() return config end, save_callback = function(content) if content and #content > 0 then local parse_error = util.checkLuaSyntax(content) if not parse_error then local syntax_okay, syntax_error = pcall(loadstring(content)) if syntax_okay then feed_config_file = io.open(self.feed_config_path, "w") feed_config_file:write(content) feed_config_file:close() return true, _("Configuration saved") else return false, T(_("Configuration invalid: %1"), syntax_error) end else return false, T(_("Configuration invalid: %1"), parse_error) end end return false, _("Configuration empty") end, } UIManager:show(config_editor) config_editor:onShowKeyboard() end function NewsDownloader:openDownloadsFolder() local FileManager = require("apps/filemanager/filemanager") if self.ui.document then self.ui:onClose() end if FileManager.instance then FileManager.instance:reinit(self.download_dir) else FileManager:showFiles(self.download_dir) end end function NewsDownloader:onCloseDocument() local document_full_path = self.ui.document.file if document_full_path and self.download_dir and self.download_dir == string.sub(document_full_path, 1, string.len(self.download_dir)) then logger.dbg("NewsDownloader: document_full_path:", document_full_path) logger.dbg("NewsDownloader: self.download_dir:", self.download_dir) logger.dbg("NewsDownloader: removing NewsDownloader file from history.") ReadHistory:removeItemByPath(document_full_path) local doc_dir = util.splitFilePathName(document_full_path) self.ui:setLastDirForFileBrowser(doc_dir) end end -- -- KeyValuePage doesn't like to get a table with sub tables. -- This function flattens an array, moving all nested tables -- up the food chain, so to speak -- function NewsDownloader:flattenArray(base_array, source_array) for key, value in pairs(source_array) do if value[2] == nil then -- If the value is empty, then it's probably supposed to be a line table.insert( base_array, "---" ) else if value["callback"] then table.insert( base_array, { value[1], value[2], callback = value["callback"] } ) else table.insert( base_array, { value[1], value[2] } ) end end end return base_array end return NewsDownloader