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17 package org.apache.logging.log4j.core.pattern;
18
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.ThrowableProxy;
22
23 import java.util.ArrayList;
24 import java.util.List;
25 import java.util.Scanner;
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35 @Plugin(name = "ExtendedThrowablePatternConverter", type = "Converter")
36 @ConverterKeys({"xEx", "xThrowable", "xException" })
37 public final class ExtendedThrowablePatternConverter extends ThrowablePatternConverter {
38
39 private static final String FILTERS = "filters(";
40
41 private final List<String> packages;
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48 private ExtendedThrowablePatternConverter(final String[] options) {
49 super("ExtendedThrowable", "throwable", options);
50 List<String> tempPackages = null;
51 if (options != null && options.length > 1) {
52 if (options[1].startsWith(FILTERS) && options[1].endsWith(")")) {
53 final String filterStr = options[1].substring(FILTERS.length(), options[1].length() - 1);
54 final String[] array = filterStr.split(",");
55 if (array.length > 0) {
56 tempPackages = new ArrayList<String>(array.length);
57 for (final String token : array) {
58 tempPackages.add(token.trim());
59 }
60 }
61 }
62 }
63 packages = tempPackages;
64 }
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73 public static ExtendedThrowablePatternConverter newInstance(final String[] options) {
74 String type = null;
75 String[] array = options;
76 if (options != null && options.length == 1 && options[0].length() > 0) {
77 final String[] opts = options[0].split(",", 2);
78 final String first = opts[0].trim();
79 String filter;
80 final Scanner scanner = new Scanner(first);
81 if (first.equalsIgnoreCase(FULL) || first.equalsIgnoreCase(SHORT) || scanner.hasNextInt()) {
82 type = first;
83 filter = opts[1].trim();
84 } else {
85 filter = options[0].trim();
86 }
87 array = new String[] {type, filter};
88 }
89
90 return new ExtendedThrowablePatternConverter(array);
91 }
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95
96 @Override
97 public void format(final LogEvent event, final StringBuilder toAppendTo) {
98 final Throwable throwable = event.getThrown();
99 if (throwable != null && lines > 0) {
100 if (!(throwable instanceof ThrowableProxy)) {
101 super.format(event, toAppendTo);
102 return;
103 }
104 final ThrowableProxy t = (ThrowableProxy) throwable;
105 final String trace = t.getExtendedStackTrace(packages);
106 final int len = toAppendTo.length();
107 if (len > 0 && !Character.isWhitespace(toAppendTo.charAt(len - 1))) {
108 toAppendTo.append(" ");
109 }
110 if (lines != Integer.MAX_VALUE) {
111 final StringBuilder sb = new StringBuilder();
112 final String[] array = trace.split("\n");
113 final int limit = lines > array.length ? array.length : lines;
114 for (int i = 0; i < limit; ++i) {
115 sb.append(array[i]).append("\n");
116 }
117 toAppendTo.append(sb.toString());
118
119 } else {
120 toAppendTo.append(trace);
121 }
122 }
123 }
124 }