mirror of
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137 lines
4.4 KiB
Lua
137 lines
4.4 KiB
Lua
--[[--
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This module is responsible for converting files.
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]]
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local ButtonDialog = require("ui/widget/buttondialog")
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local ConfirmBox = require("ui/widget/confirmbox")
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local UIManager = require("ui/uimanager")
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local lfs = require("libs/libkoreader-lfs")
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local logger = require("logger")
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local util = require("util")
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local _ = require("gettext")
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local T = require("ffi/util").template
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local FileConverter = {
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formats_from = {
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md = {
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-- @translators See <https://en.wikipedia.org/wiki/Markdown>. In languages written in the Latin alphabet this is unlikely to change.
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name = _("Markdown"),
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from = "markdown",
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},
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},
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formats_to = {
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epub = {
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to = "epub",
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},
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html = {
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to = "html",
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},
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pdf = {
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to = "pdf",
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},
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},
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--curl --form input_files[]=@README.md --form from=markdown --form to=pdf http://c.docverter.com/convert
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docverter_url = "http://c.docverter.com/convert",
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}
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--- Converts a markdown fragment to a full HTML document.
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---- @string markdown the markdown fragment
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---- @string title an optional title for the HTML document
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---- @treturn string an HTML document
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function FileConverter:mdToHtml(markdown, title, stylesheet)
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local MD = require("apps/filemanager/lib/md")
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stylesheet = stylesheet and string.format("<style>\n%s\n</style>\n", stylesheet) or ""
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local md_options = {
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prependHead = "<!DOCTYPE html>\n<html>\n<head>\n",
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insertHead = string.format("<title>%s</title>\n%s</head>\n<body>\n", title, stylesheet),
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appendTail = "\n</body>\n</html>",
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}
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local html, err = MD(markdown, md_options)
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if err then
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logger.warn("FileManagerConverter: could not generate HTML", err)
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end
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return html
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end
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function FileConverter:_mdFileToHtml(file, title)
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local f = io.open(file, "rb")
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if f == nil then
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return
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end
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local content = f:read("*all")
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f:close()
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local html = self:mdToHtml(content, title)
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return html
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end
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function FileConverter:isSupported(file)
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return self.formats_from[util.getFileNameSuffix(file)] and true or false
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end
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function FileConverter:showConvertButtons(file, caller_post_callback)
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local function writeData(data, target_file)
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UIManager:close(self.convert_dialog)
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util.writeToFile(data, target_file)
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if caller_post_callback then
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caller_post_callback()
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end
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end
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local __, filename_pure = util.splitFilePathName(file)
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local filename_suffix = util.getFileNameSuffix(file)
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local filetype_name = self.formats_from[filename_suffix].name
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self.convert_dialog = ButtonDialog:new{
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title = T(_("Convert %1 to:"), filetype_name),
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buttons = {
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{
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{
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text = _("HTML"),
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callback = function()
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local html = self:_mdFileToHtml(file, filename_pure)
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if not html then return end
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local filename_html = file..".html"
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if lfs.attributes(filename_html, "mode") == "file" then
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UIManager:show(ConfirmBox:new{
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text = _("Overwrite existing HTML file?"),
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ok_text = _("Overwrite"),
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ok_callback = function()
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writeData(html, filename_html)
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end,
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})
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else
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writeData(html, filename_html)
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end
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end,
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},
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},
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},
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}
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self.convert_dialog.onCloseWidget = function(this)
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local super = getmetatable(this)
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if super.onCloseWidget then
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-- Call our super's method, if any
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super.onCloseWidget(this)
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end
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-- And then do our own cleanup
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self:cleanup()
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end
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UIManager:show(self.convert_dialog)
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end
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function FileConverter:cleanup()
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self.convert_dialog = nil
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end
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function FileConverter:genConvertButton(file, caller_pre_callback, caller_post_callback)
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return {
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text = _("Convert"),
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callback = function()
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if caller_pre_callback then
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caller_pre_callback()
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end
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self:showConvertButtons(file, caller_post_callback)
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end,
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}
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end
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return FileConverter
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