+++ /dev/null
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.log4j.helpers;
-
-import org.apache.log4j.Layout;
-import org.apache.log4j.spi.LoggingEvent;
-import org.apache.log4j.spi.LocationInfo;
-import java.text.DateFormat;
-import java.text.SimpleDateFormat;
-import java.util.Date;
-import java.util.Map;
-import java.util.Arrays;
-
-// Contributors: Nelson Minar <(nelson@monkey.org>
-// Igor E. Poteryaev <jah@mail.ru>
-// Reinhard Deschler <reinhard.deschler@web.de>
-
-/**
- Most of the work of the {@link org.apache.log4j.PatternLayout} class
- is delegated to the PatternParser class.
-
- <p>It is this class that parses conversion patterns and creates
- a chained list of {@link OptionConverter OptionConverters}.
-
- @author <a href=mailto:"cakalijp@Maritz.com">James P. Cakalic</a>
- @author Ceki Gülcü
- @author Anders Kristensen
-
- @since 0.8.2
-*/
-public class PatternParser {
-
- private static final char ESCAPE_CHAR = '%';
-
- private static final int LITERAL_STATE = 0;
- private static final int CONVERTER_STATE = 1;
- private static final int DOT_STATE = 3;
- private static final int MIN_STATE = 4;
- private static final int MAX_STATE = 5;
-
- static final int FULL_LOCATION_CONVERTER = 1000;
- static final int METHOD_LOCATION_CONVERTER = 1001;
- static final int CLASS_LOCATION_CONVERTER = 1002;
- static final int LINE_LOCATION_CONVERTER = 1003;
- static final int FILE_LOCATION_CONVERTER = 1004;
-
- static final int RELATIVE_TIME_CONVERTER = 2000;
- static final int THREAD_CONVERTER = 2001;
- static final int LEVEL_CONVERTER = 2002;
- static final int NDC_CONVERTER = 2003;
- static final int MESSAGE_CONVERTER = 2004;
-
- int state;
- protected StringBuffer currentLiteral = new StringBuffer(32);
- protected int patternLength;
- protected int i;
- PatternConverter head;
- PatternConverter tail;
- protected FormattingInfo formattingInfo = new FormattingInfo();
- protected String pattern;
-
- public
- PatternParser(String pattern) {
- this.pattern = pattern;
- patternLength = pattern.length();
- state = LITERAL_STATE;
- }
-
- private
- void addToList(PatternConverter pc) {
- if(head == null) {
- head = tail = pc;
- } else {
- tail.next = pc;
- tail = pc;
- }
- }
-
- protected
- String extractOption() {
- if((i < patternLength) && (pattern.charAt(i) == '{')) {
- int end = pattern.indexOf('}', i);
- if (end > i) {
- String r = pattern.substring(i + 1, end);
- i = end+1;
- return r;
- }
- }
- return null;
- }
-
-
- /**
- The option is expected to be in decimal and positive. In case of
- error, zero is returned. */
- protected
- int extractPrecisionOption() {
- String opt = extractOption();
- int r = 0;
- if(opt != null) {
- try {
- r = Integer.parseInt(opt);
- if(r <= 0) {
- LogLog.error(
- "Precision option (" + opt + ") isn't a positive integer.");
- r = 0;
- }
- }
- catch (NumberFormatException e) {
- LogLog.error("Category option \""+opt+"\" not a decimal integer.", e);
- }
- }
- return r;
- }
-
- public
- PatternConverter parse() {
- char c;
- i = 0;
- while(i < patternLength) {
- c = pattern.charAt(i++);
- switch(state) {
- case LITERAL_STATE:
- // In literal state, the last char is always a literal.
- if(i == patternLength) {
- currentLiteral.append(c);
- continue;
- }
- if(c == ESCAPE_CHAR) {
- // peek at the next char.
- switch(pattern.charAt(i)) {
- case ESCAPE_CHAR:
- currentLiteral.append(c);
- i++; // move pointer
- break;
- case 'n':
- currentLiteral.append(Layout.LINE_SEP);
- i++; // move pointer
- break;
- default:
- if(currentLiteral.length() != 0) {
- addToList(new LiteralPatternConverter(
- currentLiteral.toString()));
- //LogLog.debug("Parsed LITERAL converter: \""
- // +currentLiteral+"\".");
- }
- currentLiteral.setLength(0);
- currentLiteral.append(c); // append %
- state = CONVERTER_STATE;
- formattingInfo.reset();
- }
- }
- else {
- currentLiteral.append(c);
- }
- break;
- case CONVERTER_STATE:
- currentLiteral.append(c);
- switch(c) {
- case '-':
- formattingInfo.leftAlign = true;
- break;
- case '.':
- state = DOT_STATE;
- break;
- default:
- if(c >= '0' && c <= '9') {
- formattingInfo.min = c - '0';
- state = MIN_STATE;
- } else {
- finalizeConverter(c);
- }
- } // switch
- break;
- case MIN_STATE:
- currentLiteral.append(c);
- if(c >= '0' && c <= '9') {
- formattingInfo.min = formattingInfo.min*10 + (c - '0');
- } else if(c == '.') {
- state = DOT_STATE;
- } else {
- finalizeConverter(c);
- }
- break;
- case DOT_STATE:
- currentLiteral.append(c);
- if(c >= '0' && c <= '9') {
- formattingInfo.max = c - '0';
- state = MAX_STATE;
- }
- else {
- LogLog.error("Error occured in position "+i
- +".\n Was expecting digit, instead got char \""+c+"\".");
- state = LITERAL_STATE;
- }
- break;
- case MAX_STATE:
- currentLiteral.append(c);
- if(c >= '0' && c <= '9') {
- formattingInfo.max = formattingInfo.max*10 + (c - '0');
- } else {
- finalizeConverter(c);
- state = LITERAL_STATE;
- }
- break;
- } // switch
- } // while
- if(currentLiteral.length() != 0) {
- addToList(new LiteralPatternConverter(currentLiteral.toString()));
- //LogLog.debug("Parsed LITERAL converter: \""+currentLiteral+"\".");
- }
- return head;
- }
-
- protected
- void finalizeConverter(char c) {
- PatternConverter pc = null;
- switch(c) {
- case 'c':
- pc = new CategoryPatternConverter(formattingInfo,
- extractPrecisionOption());
- //LogLog.debug("CATEGORY converter.");
- //formattingInfo.dump();
- currentLiteral.setLength(0);
- break;
- case 'C':
- pc = new ClassNamePatternConverter(formattingInfo,
- extractPrecisionOption());
- //LogLog.debug("CLASS_NAME converter.");
- //formattingInfo.dump();
- currentLiteral.setLength(0);
- break;
- case 'd':
- String dateFormatStr = AbsoluteTimeDateFormat.ISO8601_DATE_FORMAT;
- DateFormat df;
- String dOpt = extractOption();
- if(dOpt != null) {
- dateFormatStr = dOpt;
- }
-
- if(dateFormatStr.equalsIgnoreCase(
- AbsoluteTimeDateFormat.ISO8601_DATE_FORMAT)) {
- df = new ISO8601DateFormat();
- } else if(dateFormatStr.equalsIgnoreCase(
- AbsoluteTimeDateFormat.ABS_TIME_DATE_FORMAT)) {
- df = new AbsoluteTimeDateFormat();
- } else if(dateFormatStr.equalsIgnoreCase(
- AbsoluteTimeDateFormat.DATE_AND_TIME_DATE_FORMAT)) {
- df = new DateTimeDateFormat();
- } else {
- try {
- df = new SimpleDateFormat(dateFormatStr);
- }
- catch (IllegalArgumentException e) {
- LogLog.error("Could not instantiate SimpleDateFormat with " +
- dateFormatStr, e);
- df = (DateFormat) OptionConverter.instantiateByClassName(
- "org.apache.log4j.helpers.ISO8601DateFormat",
- DateFormat.class, null);
- }
- }
- pc = new DatePatternConverter(formattingInfo, df);
- //LogLog.debug("DATE converter {"+dateFormatStr+"}.");
- //formattingInfo.dump();
- currentLiteral.setLength(0);
- break;
- case 'F':
- pc = new LocationPatternConverter(formattingInfo,
- FILE_LOCATION_CONVERTER);
- //LogLog.debug("File name converter.");
- //formattingInfo.dump();
- currentLiteral.setLength(0);
- break;
- case 'l':
- pc = new LocationPatternConverter(formattingInfo,
- FULL_LOCATION_CONVERTER);
- //LogLog.debug("Location converter.");
- //formattingInfo.dump();
- currentLiteral.setLength(0);
- break;
- case 'L':
- pc = new LocationPatternConverter(formattingInfo,
- LINE_LOCATION_CONVERTER);
- //LogLog.debug("LINE NUMBER converter.");
- //formattingInfo.dump();
- currentLiteral.setLength(0);
- break;
- case 'm':
- pc = new BasicPatternConverter(formattingInfo, MESSAGE_CONVERTER);
- //LogLog.debug("MESSAGE converter.");
- //formattingInfo.dump();
- currentLiteral.setLength(0);
- break;
- case 'M':
- pc = new LocationPatternConverter(formattingInfo,
- METHOD_LOCATION_CONVERTER);
- //LogLog.debug("METHOD converter.");
- //formattingInfo.dump();
- currentLiteral.setLength(0);
- break;
- case 'p':
- pc = new BasicPatternConverter(formattingInfo, LEVEL_CONVERTER);
- //LogLog.debug("LEVEL converter.");
- //formattingInfo.dump();
- currentLiteral.setLength(0);
- break;
- case 'r':
- pc = new BasicPatternConverter(formattingInfo,
- RELATIVE_TIME_CONVERTER);
- //LogLog.debug("RELATIVE time converter.");
- //formattingInfo.dump();
- currentLiteral.setLength(0);
- break;
- case 't':
- pc = new BasicPatternConverter(formattingInfo, THREAD_CONVERTER);
- //LogLog.debug("THREAD converter.");
- //formattingInfo.dump();
- currentLiteral.setLength(0);
- break;
- /*case 'u':
- if(i < patternLength) {
- char cNext = pattern.charAt(i);
- if(cNext >= '0' && cNext <= '9') {
- pc = new UserFieldPatternConverter(formattingInfo, cNext - '0');
- LogLog.debug("USER converter ["+cNext+"].");
- formattingInfo.dump();
- currentLiteral.setLength(0);
- i++;
- }
- else
- LogLog.error("Unexpected char" +cNext+" at position "+i);
- }
- break;*/
- case 'x':
- pc = new BasicPatternConverter(formattingInfo, NDC_CONVERTER);
- //LogLog.debug("NDC converter.");
- currentLiteral.setLength(0);
- break;
- case 'X':
- String xOpt = extractOption();
- pc = new MDCPatternConverter(formattingInfo, xOpt);
- currentLiteral.setLength(0);
- break;
- default:
- LogLog.error("Unexpected char [" +c+"] at position "+i
- +" in conversion patterrn.");
- pc = new LiteralPatternConverter(currentLiteral.toString());
- currentLiteral.setLength(0);
- }
-
- addConverter(pc);
- }
-
- protected
- void addConverter(PatternConverter pc) {
- currentLiteral.setLength(0);
- // Add the pattern converter to the list.
- addToList(pc);
- // Next pattern is assumed to be a literal.
- state = LITERAL_STATE;
- // Reset formatting info
- formattingInfo.reset();
- }
-
- // ---------------------------------------------------------------------
- // PatternConverters
- // ---------------------------------------------------------------------
-
- private static class BasicPatternConverter extends PatternConverter {
- int type;
-
- BasicPatternConverter(FormattingInfo formattingInfo, int type) {
- super(formattingInfo);
- this.type = type;
- }
-
- public
- String convert(LoggingEvent event) {
- switch(type) {
- case RELATIVE_TIME_CONVERTER:
- return (Long.toString(event.timeStamp - LoggingEvent.getStartTime()));
- case THREAD_CONVERTER:
- return event.getThreadName();
- case LEVEL_CONVERTER:
- return event.getLevel().toString();
- case NDC_CONVERTER:
- return event.getNDC();
- case MESSAGE_CONVERTER: {
- return event.getRenderedMessage();
- }
- default: return null;
- }
- }
- }
-
- private static class LiteralPatternConverter extends PatternConverter {
- private String literal;
-
- LiteralPatternConverter(String value) {
- literal = value;
- }
-
- public
- final
- void format(StringBuffer sbuf, LoggingEvent event) {
- sbuf.append(literal);
- }
-
- public
- String convert(LoggingEvent event) {
- return literal;
- }
- }
-
- private static class DatePatternConverter extends PatternConverter {
- private DateFormat df;
- private Date date;
-
- DatePatternConverter(FormattingInfo formattingInfo, DateFormat df) {
- super(formattingInfo);
- date = new Date();
- this.df = df;
- }
-
- public
- String convert(LoggingEvent event) {
- date.setTime(event.timeStamp);
- String converted = null;
- try {
- converted = df.format(date);
- }
- catch (Exception ex) {
- LogLog.error("Error occured while converting date.", ex);
- }
- return converted;
- }
- }
-
- private static class MDCPatternConverter extends PatternConverter {
- private String key;
-
- MDCPatternConverter(FormattingInfo formattingInfo, String key) {
- super(formattingInfo);
- this.key = key;
- }
-
- public
- String convert(LoggingEvent event) {
- if (key == null) {
- StringBuffer buf = new StringBuffer("{");
- Map properties = event.getProperties();
- if (properties.size() > 0) {
- Object[] keys = properties.keySet().toArray();
- Arrays.sort(keys);
- for (int i = 0; i < keys.length; i++) {
- buf.append('{');
- buf.append(keys[i]);
- buf.append(',');
- buf.append(properties.get(keys[i]));
- buf.append('}');
- }
- }
- buf.append('}');
- return buf.toString();
- } else {
- Object val = event.getMDC(key);
- if(val == null) {
- return null;
- } else {
- return val.toString();
- }
- }
- }
- }
-
-
- private class LocationPatternConverter extends PatternConverter {
- int type;
-
- LocationPatternConverter(FormattingInfo formattingInfo, int type) {
- super(formattingInfo);
- this.type = type;
- }
-
- public
- String convert(LoggingEvent event) {
- LocationInfo locationInfo = event.getLocationInformation();
- switch(type) {
- case FULL_LOCATION_CONVERTER:
- return locationInfo.fullInfo;
- case METHOD_LOCATION_CONVERTER:
- return locationInfo.getMethodName();
- case LINE_LOCATION_CONVERTER:
- return locationInfo.getLineNumber();
- case FILE_LOCATION_CONVERTER:
- return locationInfo.getFileName();
- default: return null;
- }
- }
- }
-
- private static abstract class NamedPatternConverter extends PatternConverter {
- int precision;
-
- NamedPatternConverter(FormattingInfo formattingInfo, int precision) {
- super(formattingInfo);
- this.precision = precision;
- }
-
- abstract
- String getFullyQualifiedName(LoggingEvent event);
-
- public
- String convert(LoggingEvent event) {
- String n = getFullyQualifiedName(event);
- if(precision <= 0) {
- return n;
- } else {
- int len = n.length();
-
- // We substract 1 from 'len' when assigning to 'end' to avoid out of
- // bounds exception in return r.substring(end+1, len). This can happen if
- // precision is 1 and the category name ends with a dot.
- int end = len -1 ;
- for(int i = precision; i > 0; i--) {
- end = n.lastIndexOf('.', end-1);
- if(end == -1) {
- return n;
- }
- }
- return n.substring(end+1, len);
- }
- }
- }
-
- private class ClassNamePatternConverter extends NamedPatternConverter {
-
- ClassNamePatternConverter(FormattingInfo formattingInfo, int precision) {
- super(formattingInfo, precision);
- }
-
- String getFullyQualifiedName(LoggingEvent event) {
- return event.getLocationInformation().getClassName();
- }
- }
-
- private class CategoryPatternConverter extends NamedPatternConverter {
-
- CategoryPatternConverter(FormattingInfo formattingInfo, int precision) {
- super(formattingInfo, precision);
- }
-
- String getFullyQualifiedName(LoggingEvent event) {
- return event.getLoggerName();
- }
- }
-}
-
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