mirror of
https://github.com/koreader/koreader
synced 2024-10-31 21:20:20 +00:00
117 lines
3.6 KiB
Lua
117 lines
3.6 KiB
Lua
local InputContainer = require("ui/widget/container/inputcontainer")
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local UIManager = require("ui/uimanager")
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local JSON = require("json")
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local InfoMessage = require("ui/widget/infomessage")
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local T = require("ffi/util").template
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local _ = require("gettext")
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local util = require("util")
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local ReaderHyphenation = InputContainer:new{
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hyph_menu_title = _("Hyphenation"),
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hyph_table = nil,
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}
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function ReaderHyphenation:init()
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self.lang_table = {}
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self.hyph_table = {}
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self.hyph_alg = cre.getSelectedHyphDict()
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local lang_data_file = assert(io.open("./data/hyph/languages.json"), "r")
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local ok, lang_data = pcall(JSON.decode, lang_data_file:read("*all"))
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if ok and lang_data then
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for k,v in ipairs(lang_data) do
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table.insert(self.hyph_table, {
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text = v.name,
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callback = function()
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self.hyph_alg = v.filename
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UIManager:show(InfoMessage:new{
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text = T(_("Changed hyphenation to %1."), v.name),
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})
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self.ui.document:setHyphDictionary(v.filename)
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self.ui.toc:onUpdateToc()
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end,
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checked_func = function()
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return v.filename == self.hyph_alg
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end
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})
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self.lang_table[v.language] = v.filename
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if v.aliases then
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for i,alias in ipairs(v.aliases) do
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self.lang_table[alias] = v.filename
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end
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end
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end
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end
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self.ui.menu:registerToMainMenu(self)
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end
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function ReaderHyphenation:parseLanguageTag(lang_tag)
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-- Parse an RFC 5646 language tag, like "en-US" or "en".
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-- https://tools.ietf.org/html/rfc5646
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-- We are only interested in the language and region parts.
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local language = nil
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local region = nil
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for part in util.gsplit(lang_tag, "-", false) do
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if not language then
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language = string.lower(part)
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elseif string.len(part) == 2 and not string.match(part, "[^%a]") then
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region = string.upper(part)
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end
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end
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return language, region
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end
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function ReaderHyphenation:getDictForLanguage(lang_tag)
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-- EPUB language is an RFC 5646 language tag.
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-- http://www.idpf.org/epub/301/spec/epub-publications.html#sec-opf-dclanguage
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--
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-- FB2 language is a two-letter language code
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-- (which is also a valid RFC 5646 language tag).
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-- http://fictionbook.org/index.php/%D0%AD%D0%BB%D0%B5%D0%BC%D0%B5%D0%BD%D1%82_lang (in Russian)
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local language, region = self:parseLanguageTag(lang_tag)
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if not language then
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return
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end
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local dict
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if region then
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dict = self.lang_table[language .. '-' .. region]
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end
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if not dict then
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dict = self.lang_table[language]
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end
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return dict
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end
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function ReaderHyphenation:onPreRenderDocument(config)
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-- This is called after the document has been loaded
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-- so we can use the document language.
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local hyph_alg = config:readSetting("hyph_alg")
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if not hyph_alg then
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hyph_alg = self:getDictForLanguage(self.ui.document:getProps().language)
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end
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if hyph_alg then
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self.ui.document:setHyphDictionary(hyph_alg)
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end
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self.hyph_alg = cre.getSelectedHyphDict()
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end
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function ReaderHyphenation:onSaveSettings()
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self.ui.doc_settings:saveSetting("hyph_alg", self.hyph_alg)
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end
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function ReaderHyphenation:addToMainMenu(tab_item_table)
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-- insert table to main reader menu
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table.insert(tab_item_table.typeset, {
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text = self.hyph_menu_title,
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sub_item_table = self.hyph_table,
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})
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end
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return ReaderHyphenation
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