90 lines
3.5 KiB
Kotlin
90 lines
3.5 KiB
Kotlin
/*
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* WorldEdit, a Minecraft world manipulation toolkit
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* Copyright (C) sk89q <http://www.sk89q.com>
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* Copyright (C) WorldEdit team and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package com.sk89q.worldedit.internal.util
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import com.sk89q.worldedit.util.formatting.WorldEditText
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import com.sk89q.worldedit.util.formatting.text.Component
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import com.sk89q.worldedit.util.formatting.text.TextComponent
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import com.sk89q.worldedit.util.formatting.text.TranslatableComponent
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import com.sk89q.worldedit.util.formatting.text.event.ClickEvent
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import com.sk89q.worldedit.util.formatting.text.format.TextDecoration
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import org.enginehub.piston.util.TextHelper
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import java.util.Locale
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fun reduceToRst(component: Component): String {
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val formatted = WorldEditText.format(component, Locale.US)
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return formatAsRst(formatted).toString()
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}
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private fun formatAsRst(component: Component, currentDeco: String? = null): CharSequence {
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return when (component) {
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is TextComponent -> {
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val content = StringBuilder(component.content())
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val deco = when {
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// Actions that suggest themselves as commands are marked as code
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component.isSuggestingAsCommand(content.toString()) -> "``"
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component.decorations().any { it == TextDecoration.BOLD } -> "**"
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component.decorations().any { it == TextDecoration.ITALIC } -> "*"
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else -> null
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}
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component.children().joinTo(content, separator = "") {
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formatAsRst(it, deco ?: currentDeco)
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}
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deco?.let {
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require(currentDeco == null) {
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"Nested decorations are hell in RST. \n" +
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"Existing: $currentDeco; New: $deco\n" +
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"Offender: ${TextHelper.reduceToText(component)}"
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}
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content.rstDeco(deco)
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}
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content
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}
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is TranslatableComponent -> {
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val content = StringBuilder(component.key())
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component.children().joinTo(content, separator = "") { formatAsRst(it, currentDeco) }
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content
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}
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else -> component.children().joinToString(separator = "") { formatAsRst(it, currentDeco) }
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}
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}
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private fun Component.isSuggestingAsCommand(text: String): Boolean {
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val ce = clickEvent()
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return when (ce?.action()) {
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ClickEvent.Action.RUN_COMMAND,
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ClickEvent.Action.SUGGEST_COMMAND ->
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ce.value() == text
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else -> false
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}
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}
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private fun StringBuilder.rstDeco(deco: String): StringBuilder = apply {
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ensureCapacity(length + deco.length * 2)
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val insertionPoint = indexOfFirst { !it.isWhitespace() }.coerceAtLeast(0)
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insert(insertionPoint, deco)
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val insertionPointEnd = (indexOfLast { !it.isWhitespace() } + 1).takeUnless { it < 1 } ?: length
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insert(insertionPointEnd, deco)
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}
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