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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Josh Roy <10731363+JRoy@users.noreply.github.com>
Date: Sat, 20 Feb 2021 13:09:59 -0500
Subject: [PATCH] Add support for hex color codes in console
Converts upstream's hex color code legacy format into actual hex color codes in the console.
diff --git a/build.gradle.kts b/build.gradle.kts
index ecd2a9cd422e67d5aeebf9abf2998452515fad80..03521590dfcbb09416097e793fae5951c1ae3cc0 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -30,6 +30,7 @@ dependencies {
Scanning takes about 1-2 seconds so adding this speeds up the server start.
*/
implementation("org.apache.logging.log4j:log4j-core:2.14.1") // Paper - implementation
+ annotationProcessor("org.apache.logging.log4j:log4j-core:2.14.1") // Paper - Needed to generate meta for out hex color converter plugin
// Paper end
implementation("org.apache.logging.log4j:log4j-iostreams:2.14.1") // Paper
implementation("org.apache.logging.log4j:log4j-api:2.14.1") // Paper
diff --git a/src/main/java/io/papermc/paper/console/HexFormattingConverter.java b/src/main/java/io/papermc/paper/console/HexFormattingConverter.java
new file mode 100644
index 0000000000000000000000000000000000000000..a4315961b7a465fb4872a4d67e7c26d4b4ed1fb9
--- /dev/null
+++ b/src/main/java/io/papermc/paper/console/HexFormattingConverter.java
@@ -0,0 +1,178 @@
+package io.papermc.paper.console;
+
+import net.minecrell.terminalconsole.TerminalConsoleAppender;
+import org.apache.logging.log4j.core.LogEvent;
+import org.apache.logging.log4j.core.config.Configuration;
+import org.apache.logging.log4j.core.config.plugins.Plugin;
+import org.apache.logging.log4j.core.layout.PatternLayout;
+import org.apache.logging.log4j.core.pattern.*;
+import org.apache.logging.log4j.util.PerformanceSensitive;
+import org.apache.logging.log4j.util.PropertiesUtil;
+
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import static net.minecrell.terminalconsole.MinecraftFormattingConverter.KEEP_FORMATTING_PROPERTY;
+
+/**
+ * Modified version of <a href="https://github.com/Minecrell/TerminalConsoleAppender/blob/master/src/main/java/net/minecrell/terminalconsole/MinecraftFormattingConverter.java">
+ * TerminalConsoleAppender's MinecraftFormattingConverter</a> to support hex color codes using the md_5 &x&r&r&g&g&b&b format.
+ */
+@Plugin(name = "paperMinecraftFormatting", category = PatternConverter.CATEGORY)
+@ConverterKeys({ "paperMinecraftFormatting" })
+@PerformanceSensitive("allocation")
+public final class HexFormattingConverter extends LogEventPatternConverter {
+
+ private static final boolean KEEP_FORMATTING = PropertiesUtil.getProperties().getBooleanProperty(KEEP_FORMATTING_PROPERTY);
+
+ private static final String ANSI_RESET = "\u001B[m";
+
+ private static final char COLOR_CHAR = '§';
+ private static final String LOOKUP = "0123456789abcdefklmnor";
+
+ private static final String RGB_ANSI = "\u001B[38;2;%d;%d;%dm";
+ private static final Pattern NAMED_PATTERN = Pattern.compile(COLOR_CHAR + "[0-9a-fk-orA-FK-OR]");
+ private static final Pattern RGB_PATTERN = Pattern.compile(COLOR_CHAR + "x(" + COLOR_CHAR + "[0-9a-fA-F]){6}");
+
+ private static final String[] ansiCodes = new String[] {
+ "\u001B[0;30m", // Black §0
+ "\u001B[0;34m", // Dark Blue §1
+ "\u001B[0;32m", // Dark Green §2
+ "\u001B[0;36m", // Dark Aqua §3
+ "\u001B[0;31m", // Dark Red §4
+ "\u001B[0;35m", // Dark Purple §5
+ "\u001B[0;33m", // Gold §6
+ "\u001B[0;37m", // Gray §7
+ "\u001B[0;30;1m", // Dark Gray §8
+ "\u001B[0;34;1m", // Blue §9
+ "\u001B[0;32;1m", // Green §a
+ "\u001B[0;36;1m", // Aqua §b
+ "\u001B[0;31;1m", // Red §c
+ "\u001B[0;35;1m", // Light Purple §d
+ "\u001B[0;33;1m", // Yellow §e
+ "\u001B[0;37;1m", // White §f
+ "\u001B[5m", // Obfuscated §k
+ "\u001B[21m", // Bold §l
+ "\u001B[9m", // Strikethrough §m
+ "\u001B[4m", // Underline §n
+ "\u001B[3m", // Italic §o
+ ANSI_RESET, // Reset §r
+ };
+
+ private final boolean ansi;
+ private final List<PatternFormatter> formatters;
+
+ /**
+ * Construct the converter.
+ *
+ * @param formatters The pattern formatters to generate the text to manipulate
+ * @param strip If true, the converter will strip all formatting codes
+ */
+ protected HexFormattingConverter(List<PatternFormatter> formatters, boolean strip) {
+ super("paperMinecraftFormatting", null);
+ this.formatters = formatters;
+ this.ansi = !strip;
+ }
+
+ @Override
+ public void format(LogEvent event, StringBuilder toAppendTo) {
+ int start = toAppendTo.length();
+ //noinspection ForLoopReplaceableByForEach
+ for (int i = 0, size = formatters.size(); i < size; i++) {
+ formatters.get(i).format(event, toAppendTo);
+ }
+
+ if (KEEP_FORMATTING || toAppendTo.length() == start) {
+ // Skip replacement if disabled or if the content is empty
+ return;
+ }
+
+ boolean useAnsi = ansi && TerminalConsoleAppender.isAnsiSupported();
+ String content = toAppendTo.substring(start);
+ content = useAnsi ? convertRGBColors(content) : stripRGBColors(content);
+ format(content, toAppendTo, start, useAnsi);
+ }
+
+ private static String convertRGBColors(String input) {
+ Matcher matcher = RGB_PATTERN.matcher(input);
+ StringBuffer buffer = new StringBuffer();
+ while (matcher.find()) {
+ String s = matcher.group().replace(String.valueOf(COLOR_CHAR), "").replace('x', '#');
+ int hex = Integer.decode(s);
+ int red = (hex >> 16) & 0xFF;
+ int green = (hex >> 8) & 0xFF;
+ int blue = hex & 0xFF;
+ String replacement = String.format(RGB_ANSI, red, green, blue);
+ matcher.appendReplacement(buffer, replacement);
+ }
+ matcher.appendTail(buffer);
+ return buffer.toString();
+ }
+
+ private static String stripRGBColors(String input) {
+ Matcher matcher = RGB_PATTERN.matcher(input);
+ StringBuffer buffer = new StringBuffer();
+ while (matcher.find()) {
+ matcher.appendReplacement(buffer, "");
+ }
+ matcher.appendTail(buffer);
+ return buffer.toString();
+ }
+
+ static void format(String content, StringBuilder result, int start, boolean ansi) {
+ int next = content.indexOf(COLOR_CHAR);
+ int last = content.length() - 1;
+ if (next == -1 || next == last) {
+ result.setLength(start);
+ result.append(content);
+ if (ansi) {
+ result.append(ANSI_RESET);
+ }
+ return;
+ }
+
+ Matcher matcher = NAMED_PATTERN.matcher(content);
+ StringBuffer buffer = new StringBuffer();
+ while (matcher.find()) {
+ int format = LOOKUP.indexOf(Character.toLowerCase(matcher.group().charAt(1)));
+ if (format != -1) {
+ matcher.appendReplacement(buffer, ansi ? ansiCodes[format] : "");
+ }
+ }
+ matcher.appendTail(buffer);
+
+ result.setLength(start);
+ result.append(buffer.toString());
+ if (ansi) {
+ result.append(ANSI_RESET);
+ }
+ }
+
+ /**
+ * Gets a new instance of the {@link HexFormattingConverter} with the
+ * specified options.
+ *
+ * @param config The current configuration
+ * @param options The pattern options
+ * @return The new instance
+ *
+ * @see HexFormattingConverter
+ */
+ public static HexFormattingConverter newInstance(Configuration config, String[] options) {
+ if (options.length < 1 || options.length > 2) {
+ LOGGER.error("Incorrect number of options on paperMinecraftFormatting. Expected at least 1, max 2 received " + options.length);
+ return null;
+ }
+ if (options[0] == null) {
+ LOGGER.error("No pattern supplied on paperMinecraftFormatting");
+ return null;
+ }
+
+ PatternParser parser = PatternLayout.createPatternParser(config);
+ List<PatternFormatter> formatters = parser.parse(options[0]);
+ boolean strip = options.length > 1 && "strip".equals(options[1]);
+ return new HexFormattingConverter(formatters, strip);
+ }
+
+}
diff --git a/src/main/resources/log4j2.xml b/src/main/resources/log4j2.xml
index 8af159abd3d0cc94cf155fec5b384c42f69551bf..67da1aa7a21622fb231d19dede3775a282a4a12e 100644
--- a/src/main/resources/log4j2.xml
+++ b/src/main/resources/log4j2.xml
@@ -6,21 +6,21 @@
</Queue>
<TerminalConsole name="TerminalConsole">
<PatternLayout>
- <LoggerNamePatternSelector defaultPattern="%highlightError{[%d{HH:mm:ss} %level]: [%logger] %minecraftFormatting{%msg}%n%xEx{full}}">
+ <LoggerNamePatternSelector defaultPattern="%highlightError{[%d{HH:mm:ss} %level]: [%logger] %paperMinecraftFormatting{%msg}%n%xEx{full}}">
<!-- Log root, Minecraft, Mojang and Bukkit loggers without prefix -->
<!-- Disable prefix for various plugins that bypass the plugin logger -->
<PatternMatch key=",net.minecraft.,Minecraft,com.mojang.,com.sk89q.,ru.tehkode.,Minecraft.AWE"
- pattern="%highlightError{[%d{HH:mm:ss} %level]: %minecraftFormatting{%msg}%n%xEx{full}}" />
+ pattern="%highlightError{[%d{HH:mm:ss} %level]: %paperMinecraftFormatting{%msg}%n%xEx{full}}" />
</LoggerNamePatternSelector>
</PatternLayout>
</TerminalConsole>
<RollingRandomAccessFile name="File" fileName="logs/latest.log" filePattern="logs/%d{yyyy-MM-dd}-%i.log.gz">
<PatternLayout>
- <LoggerNamePatternSelector defaultPattern="[%d{HH:mm:ss}] [%t/%level]: [%logger] %minecraftFormatting{%msg}{strip}%n%xEx{full}">
+ <LoggerNamePatternSelector defaultPattern="[%d{HH:mm:ss}] [%t/%level]: [%logger] %paperMinecraftFormatting{%msg}{strip}%n%xEx{full}">
<!-- Log root, Minecraft, Mojang and Bukkit loggers without prefix -->
<!-- Disable prefix for various plugins that bypass the plugin logger -->
<PatternMatch key=",net.minecraft.,Minecraft,com.mojang.,com.sk89q.,ru.tehkode.,Minecraft.AWE"
- pattern="[%d{HH:mm:ss}] [%t/%level]: %minecraftFormatting{%msg}{strip}%n%xEx{full}" />
+ pattern="[%d{HH:mm:ss}] [%t/%level]: %paperMinecraftFormatting{%msg}{strip}%n%xEx{full}" />
</LoggerNamePatternSelector>
</PatternLayout>
<Policies>
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