Twidere-App-Android-Twitter.../twidere/src/main/kotlin/org/mariotaku/twidere/extension/atto/DOMExtensions.kt

58 lines
1.8 KiB
Kotlin

/*
* Twidere - Twitter client for Android
*
* Copyright (C) 2012-2017 Mariotaku Lee <mariotaku.lee@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.mariotaku.twidere.extension.atto
import org.attoparser.dom.Document
import org.attoparser.dom.Element
/**
* Created by mariotaku on 2017/4/29.
*/
fun Document.firstElementOrNull(match: (Element) -> Boolean): Element? {
getChildrenOfType(Element::class.java).forEach { child ->
val element = child.firstElementOrNull(match)
if (element != null) return element
}
return null
}
fun Element.firstElementOrNull(match: (Element) -> Boolean): Element? {
if (match(this)) return this
getChildrenOfType(Element::class.java).forEach { child ->
val element = child.firstElementOrNull(match)
if (element != null) return element
}
return null
}
fun Element.filter(match: (Element) -> Boolean): List<Element> {
return filterTo(ArrayList(), match)
}
fun <C : MutableCollection<Element>> Element.filterTo(to: C, match: (Element) -> Boolean): C {
if (match(this)) {
to.add(this)
}
getChildrenOfType(Element::class.java).forEach { child ->
child.filterTo(to, match)
}
return to
}