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Fix #4240: 旧版MC日志把每一条都给算成error #6304

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Fix #4240: 旧版MC日志把每一条都给算成error #6304

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52af83d
Fix #4240: MC版本为1.6.4时，日志把每一条都给算成error
Wulian233 Jul 4, 2026
2105650
update
Wulian233 Jul 5, 2026
c398402
update
Wulian233 Jul 5, 2026
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4 changes: 3 additions & 1 deletion HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java
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Original file line number Diff line number Diff line change
Expand Up @@ -929,7 +929,9 @@ public void onLog(String log, boolean isErrorStream) {
if (forbiddenAccessToken != null)
log = log.replace(forbiddenAccessToken, "<access token>");

Log4jLevel level = isErrorStream && !log.startsWith("[authlib-injector]") ? Log4jLevel.ERROR : null;
Log4jLevel level = log.startsWith("[authlib-injector]")
? Log4jLevel.guessLevel(log)
: Log4jLevel.guessLevel(log, isErrorStream);
if (showLogs) {
if (level == null)
level = Lang.requireNonNullElse(Log4jLevel.guessLevel(log), Log4jLevel.INFO);
Expand Down
130 changes: 77 additions & 53 deletions HMCLCore/src/main/java/org/jackhuang/hmcl/util/Log4jLevel.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
*/
package org.jackhuang.hmcl.util;

import java.util.logging.Level;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

Expand Down Expand Up @@ -50,66 +51,54 @@ public boolean lessOrEqual(Log4jLevel level) {
public static final Pattern MINECRAFT_LOGGER = Pattern.compile("\\[(?<timestamp>[0-9:]+)] \\[[^/]+/(?<level>[^]]+)]");
public static final Pattern MINECRAFT_LOGGER_CATEGORY = Pattern.compile("\\[(?<timestamp>[0-9:]+)] \\[[^/]+/(?<level>[^]]+)] \\[(?<category>[^]]+)]");
public static final String JAVA_SYMBOL = "([a-zA-Z_$][a-zA-Z\\d_$]*\\.)+[a-zA-Z_$][a-zA-Z\\d_$]*";
private static final String WRAPPED_PRINT_STREAM = "[java.lang.Throwable$WrappedPrintStream:println";

private static final String[] INFO_MARKERS = markers(
Level.INFO,
Level.CONFIG,
Level.FINE,
Level.FINER,
Level.FINEST
);
private static final String[] ERROR_MARKERS = markers(Level.SEVERE);
private static final String[] WARN_MARKERS = markers(Level.WARNING);

public static Log4jLevel guessLevel(String line) {
Log4jLevel level = null;
Matcher m = MINECRAFT_LOGGER.matcher(line);
if (m.find()) {
// New style logs from log4j
String levelStr = m.group("level");
if (null != levelStr)
switch (levelStr) {
case "INFO":
level = INFO;
break;
case "WARN":
level = WARN;
break;
case "ERROR":
level = ERROR;
break;
case "FATAL":
level = FATAL;
break;
case "TRACE":
level = TRACE;
break;
case "DEBUG":
level = DEBUG;
break;
default:
break;
}
level = parseLevel(m.group("level"));
Matcher m2 = MINECRAFT_LOGGER_CATEGORY.matcher(line);
if (m2.find()) {
String level2Str = m2.group("category");
if (null != level2Str)
switch (level2Str) {
case "STDOUT":
level = INFO;
break;
case "STDERR":
level = ERROR;
break;
}
}

if (line.contains("STDERR]") || line.contains("[STDERR/]")) {
level = ERROR;
if (level2Str != null) {
level = switch (level2Str) {
case "STDOUT" -> INFO;
case "STDERR" -> guessStderrLevel(line, level);
default -> level;
};
}
} else if (line.contains("STDERR]") || line.contains("[STDERR/]")) {
level = guessStderrLevel(line, level);
}
} else {
if (line.contains("[INFO]") || line.contains("[CONFIG]") || line.contains("[FINE]")
|| line.contains("[FINER]") || line.contains("[FINEST]"))
if (containsAny(line, INFO_MARKERS)) {
level = INFO;
if (line.contains("[SEVERE]") || line.contains("[STDERR]"))
}
if (containsAny(line, ERROR_MARKERS)) {
level = ERROR;
if (line.contains("[WARNING]"))
}
if (containsAny(line, WARN_MARKERS)) {
level = WARN;
if (line.contains("[DEBUG]"))
}
if (line.contains("[DEBUG]")) {
level = DEBUG;
}
}
if (line.contains("overwriting existing"))

if (line.contains("overwriting existing")) {
level = FATAL;
}

/*if (line.contains("Exception in thread")
|| line.matches("\\s+at " + JAVA_SYMBOL)
Expand All @@ -120,17 +109,52 @@ public static Log4jLevel guessLevel(String line) {
return level;
}

public static boolean isError(Log4jLevel a) {
return a != null && a.lessOrEqual(Log4jLevel.ERROR);
public static Log4jLevel guessLevel(String line, boolean isErrorStream) {
Log4jLevel level = guessLevel(line);
return level != null || !isErrorStream ? level : ERROR;
}

public static Log4jLevel mergeLevel(Log4jLevel a, Log4jLevel b) {
if (a == null)
return b;
else if (b == null)
return a;
else
return a.level < b.level ? a : b;
private static Log4jLevel parseLevel(String level) {
return switch (level) {
case "FATAL" -> FATAL;
case "ERROR" -> ERROR;
case "WARN" -> WARN;
case "INFO" -> INFO;
case "DEBUG" -> DEBUG;
case "TRACE" -> TRACE;
case "ALL" -> ALL;
default -> null;
};
}

private static Log4jLevel guessStderrLevel(String line, Log4jLevel fallback) {
if (line.contains(WRAPPED_PRINT_STREAM) && fallback != null) {
return fallback;
}
return ERROR;
}

private static String[] markers(Level... levels) {
String[] markers = new String[levels.length * 2];
int i = 0;
for (Level level : levels) {
markers[i++] = '[' + level.getName() + ']';
markers[i++] = '[' + level.getLocalizedName() + ']';
}
return markers;
}

private static boolean containsAny(String line, String[] markers) {
for (String marker : markers) {
if (line.contains(marker)) {
return true;
}
}
return false;
}

public static boolean isError(Log4jLevel a) {
return a != null && a.lessOrEqual(Log4jLevel.ERROR);
}

public static boolean guessLogLineError(String log) {
Expand Down