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18 package org.apache.log4j.pattern;
19
20
21 /***
22 *
23 * Base class for other pattern converters which can return only parts of their name.
24 *
25 * @author Ceki Gülcü
26 * @author Curt Arnold
27 *
28 */
29 public abstract class NamePatternConverter
30 extends LoggingEventPatternConverter {
31 /***
32 * Abbreviator.
33 */
34 private final NameAbbreviator abbreviator;
35
36 /***
37 * Constructor.
38 * @param name name of converter.
39 * @param style style name for associated output.
40 * @param options options, may be null, first element will be interpreted as an abbreviation pattern.
41 */
42 protected NamePatternConverter(
43 final String name, final String style, final String[] options) {
44 super(name, style);
45
46 if ((options != null) && (options.length > 0)) {
47 abbreviator = NameAbbreviator.getAbbreviator(options[0]);
48 } else {
49 abbreviator = NameAbbreviator.getDefaultAbbreviator();
50 }
51 }
52
53 /***
54 * Abbreviate name in string buffer.
55 * @param nameStart starting position of name to abbreviate.
56 * @param buf string buffer containing name.
57 */
58 protected final void abbreviate(final int nameStart, final StringBuffer buf) {
59 abbreviator.abbreviate(nameStart, buf);
60 }
61 }