Author: ceki Date: Tue Nov 14 17:58:17 2006 New Revision: 917 Added: logback/trunk/logback-core/src/main/java/ch/qos/logback/core/util/FileSize.java logback/trunk/logback-core/src/test/java/ch/qos/logback/core/util/FileSizeTest.java Log: adding support for filesize Added: logback/trunk/logback-core/src/main/java/ch/qos/logback/core/util/FileSize.java ============================================================================== --- (empty file) +++ logback/trunk/logback-core/src/main/java/ch/qos/logback/core/util/FileSize.java Tue Nov 14 17:58:17 2006 @@ -0,0 +1,68 @@ +/** + * Logback: the generic, reliable, fast and flexible logging framework for Java. + * + * Copyright (C) 2000-2006, QOS.ch + * + * This library is free software, you can redistribute it and/or modify it under + * the terms of the GNU Lesser General Public License as published by the Free + * Software Foundation. + */ +package ch.qos.logback.core.util; + +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +public class FileSize { + + private final static String LENGTH_PART = "([0-9]+)"; + private final static int DOUBLE_GROUP = 1; + + private final static String UNIT_PART = "(|kb|mb|gb)s?"; + private final static int UNIT_GROUP = 2; + + private static final Pattern FILE_SIZE_PATTERN = Pattern.compile(LENGTH_PART + + "\\s*" + UNIT_PART, Pattern.CASE_INSENSITIVE); + + static final long KB_COEFFICIENT = 1024; + static final long MB_COEFFICIENT = 1024 * KB_COEFFICIENT; + static final long GB_COEFFICIENT = 1024 * MB_COEFFICIENT; + + + final long size; + + FileSize(long size) { + this.size = size; + } + + long getSize() { + return size; + } + + static FileSize valueOf(String fileSizeStr) { + Matcher matcher = FILE_SIZE_PATTERN.matcher(fileSizeStr); + + long coefficient; + if (matcher.matches()) { + String lenStr = matcher.group(DOUBLE_GROUP); + String unitStr = matcher.group(UNIT_GROUP); + + long lenValue = Long.valueOf(lenStr); + if (unitStr.equalsIgnoreCase("")) { + coefficient = 1; + } else if (unitStr.equalsIgnoreCase("kb")) { + coefficient = KB_COEFFICIENT; + } else if (unitStr.equalsIgnoreCase("mb")) { + coefficient = MB_COEFFICIENT; + } else if (unitStr.equalsIgnoreCase("gb")) { + coefficient = GB_COEFFICIENT; + } else { + throw new IllegalStateException("Unexpected " + unitStr); + } + return new FileSize(lenValue * coefficient); + } else { + throw new IllegalArgumentException("String value [" + fileSizeStr + + "] is not in the expected format."); + } + + } +} Added: logback/trunk/logback-core/src/test/java/ch/qos/logback/core/util/FileSizeTest.java ============================================================================== --- (empty file) +++ logback/trunk/logback-core/src/test/java/ch/qos/logback/core/util/FileSizeTest.java Tue Nov 14 17:58:17 2006 @@ -0,0 +1,60 @@ +/** + * Logback: the generic, reliable, fast and flexible logging framework for Java. + * + * Copyright (C) 2000-2006, QOS.ch + * + * This library is free software, you can redistribute it and/or modify it under + * the terms of the GNU Lesser General Public License as published by the Free + * Software Foundation. + */ + +package ch.qos.logback.core.util; + +import junit.framework.TestCase; + +public class FileSizeTest extends TestCase { + + static long KB_CO = 1024; + static long MB_CO = 1024*1024; + static long GB_CO = 1024*MB_CO; + + public FileSizeTest(String name) { + super(name); + } + + protected void setUp() throws Exception { + super.setUp(); + } + + protected void tearDown() throws Exception { + super.tearDown(); + } + + public void test() { + { + FileSize fs = FileSize.valueOf("8"); + assertEquals(8, fs.getSize()); + } + + { + FileSize fs = FileSize.valueOf("8 kbs"); + assertEquals(8*KB_CO, fs.getSize()); + } + + { + FileSize fs = FileSize.valueOf("8 kb"); + assertEquals(8*KB_CO, fs.getSize()); + } + + { + FileSize fs = FileSize.valueOf("12 mb"); + assertEquals(12*MB_CO, fs.getSize()); + } + + { + FileSize fs = FileSize.valueOf("5 GBs"); + assertEquals(5*GB_CO, fs.getSize()); + } + + } +}