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17 package org.apache.logging.log4j.core.pattern;
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19 import org.apache.logging.log4j.core.LogEvent;
20 import org.apache.logging.log4j.core.config.plugins.Plugin;
21 import org.apache.logging.log4j.core.impl.Log4jLogEvent;
22 import org.apache.logging.log4j.core.impl.ThrowableProxy;
23 import org.apache.logging.log4j.core.util.Constants;
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33 @Plugin(name = "ExtendedThrowablePatternConverter", category = PatternConverter.CATEGORY)
34 @ConverterKeys({ "xEx", "xThrowable", "xException" })
35 public final class ExtendedThrowablePatternConverter extends ThrowablePatternConverter {
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42 private ExtendedThrowablePatternConverter(final String[] options) {
43 super("ExtendedThrowable", "throwable", options);
44 }
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53 public static ExtendedThrowablePatternConverter newInstance(final String[] options) {
54 return new ExtendedThrowablePatternConverter(options);
55 }
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60 @Override
61 public void format(final LogEvent event, final StringBuilder toAppendTo) {
62 ThrowableProxy proxy = null;
63 if (event instanceof Log4jLogEvent) {
64 proxy = ((Log4jLogEvent) event).getThrownProxy();
65 }
66 final Throwable throwable = event.getThrown();
67 if (throwable != null && options.anyLines()) {
68 if (proxy == null) {
69 super.format(event, toAppendTo);
70 return;
71 }
72 final String trace = proxy.getExtendedStackTraceAsString(options.getPackages());
73 final int len = toAppendTo.length();
74 if (len > 0 && !Character.isWhitespace(toAppendTo.charAt(len - 1))) {
75 toAppendTo.append(' ');
76 }
77 if (!options.allLines() || !Constants.LINE_SEPARATOR.equals(options.getSeparator())) {
78 final StringBuilder sb = new StringBuilder();
79 final String[] array = trace.split(Constants.LINE_SEPARATOR);
80 final int limit = options.minLines(array.length) - 1;
81 for (int i = 0; i <= limit; ++i) {
82 sb.append(array[i]);
83 if (i < limit) {
84 sb.append(options.getSeparator());
85 }
86 }
87 toAppendTo.append(sb.toString());
88
89 } else {
90 toAppendTo.append(trace);
91 }
92 }
93 }
94 }