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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.Configuration;
21 import org.apache.logging.log4j.core.config.plugins.Plugin;
22 import org.apache.logging.log4j.core.impl.ThrowableProxy;
23 import org.apache.logging.log4j.util.Strings;
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33 @Plugin(name = "RootThrowablePatternConverter", category = PatternConverter.CATEGORY)
34 @ConverterKeys({ "rEx", "rThrowable", "rException" })
35 public final class RootThrowablePatternConverter extends ThrowablePatternConverter {
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43 private RootThrowablePatternConverter(final Configuration config, final String[] options) {
44 super("RootThrowable", "throwable", options, config);
45 }
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55 public static RootThrowablePatternConverter newInstance(final Configuration config, final String[] options) {
56 return new RootThrowablePatternConverter(config, options);
57 }
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62 @Override
63 public void format(final LogEvent event, final StringBuilder toAppendTo) {
64 final ThrowableProxy proxy = event.getThrownProxy();
65 final Throwable throwable = event.getThrown();
66 if (throwable != null && options.anyLines()) {
67 if (proxy == null) {
68 super.format(event, toAppendTo);
69 return;
70 }
71 final String trace = proxy.getCauseStackTraceAsString(options.getIgnorePackages(), options.getTextRenderer(), getSuffix(event), options.getSeparator());
72 final int len = toAppendTo.length();
73 if (len > 0 && !Character.isWhitespace(toAppendTo.charAt(len - 1))) {
74 toAppendTo.append(' ');
75 }
76 if (!options.allLines() || !Strings.LINE_SEPARATOR.equals(options.getSeparator())) {
77 final StringBuilder sb = new StringBuilder();
78 final String[] array = trace.split(Strings.LINE_SEPARATOR);
79 final int limit = options.minLines(array.length) - 1;
80 for (int i = 0; i <= limit; ++i) {
81 sb.append(array[i]);
82 if (i < limit) {
83 sb.append(options.getSeparator());
84 }
85 }
86 toAppendTo.append(sb.toString());
87
88 } else {
89 toAppendTo.append(trace);
90 }
91 }
92 }
93 }