2 * Sone - L10nFilter.java - Copyright © 2010–2019 David Roden
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package net.pterodactylus.sone.freenet
21 import net.pterodactylus.util.template.*
26 * [Filter] implementation replaces [String] values with their
27 * translated equivalents.
29 class L10nFilter(private val l10n: BaseL10n) : Filter {
31 override fun format(templateContext: TemplateContext?, data: Any?, parameters: Map<String, Any>?): String {
32 val parameterValues = getParameters(data, parameters)
33 val text = getText(data)
34 return if (parameterValues.isEmpty()) {
37 MessageFormat(l10n.getString(text), Locale(l10n.selectedLanguage.shortCode)).format(parameterValues.toTypedArray())
40 private fun getText(data: Any?) = (data as? L10nText)?.text ?: data.toString()
42 private fun getParameters(data: Any?, parameters: Map<String, Any>?) =
46 (parameters ?: emptyMap()).let { params ->
47 generateSequence(0) { it + 1 }
48 .takeWhile { it.toString() in params }
49 .map { params[it.toString()] }