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Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/TimeComparison.java')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/TimeComparison.java | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/TimeComparison.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/TimeComparison.java new file mode 100644 index 00000000..15c136e6 --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/TimeComparison.java @@ -0,0 +1,122 @@ +/* + * 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.tools.ant.types; + +import org.apache.tools.ant.BuildException; +import org.apache.tools.ant.util.FileUtils; + +/** + * EnumeratedAttribute for time comparisons. Accepts values + * "before", "after", "equal". + * @since Ant 1.7 + */ +public class TimeComparison extends EnumeratedAttribute { + private static final String[] VALUES + = new String[] {"before", "after", "equal"}; + + private static final FileUtils FILE_UTILS = FileUtils.getFileUtils(); + + /** Before Comparison. */ + public static final TimeComparison BEFORE = new TimeComparison("before"); + + /** After Comparison. */ + public static final TimeComparison AFTER = new TimeComparison("after"); + + /** Equal Comparison. */ + public static final TimeComparison EQUAL = new TimeComparison("equal"); + + /** + * Default constructor. + */ + public TimeComparison() { + } + + /** + * Construct a new TimeComparison with the specified value. + * @param value the EnumeratedAttribute value. + */ + public TimeComparison(String value) { + setValue(value); + } + + /** + * Return the possible values. + * @return String[] of EnumeratedAttribute values. + */ + public String[] getValues() { + return VALUES; + } + + /** + * Evaluate two times against this TimeComparison. + * @param t1 the first time to compare. + * @param t2 the second time to compare. + * @return true if the comparison result fell within the parameters of this TimeComparison. + */ + public boolean evaluate(long t1, long t2) { + return evaluate(t1, t2, FILE_UTILS.getFileTimestampGranularity()); + } + + /** + * Evaluate two times against this TimeComparison. + * @param t1 the first time to compare. + * @param t2 the second time to compare. + * @param g the timestamp granularity. + * @return true if the comparison result fell within the parameters of this TimeComparison. + */ + public boolean evaluate(long t1, long t2, long g) { + int cmp = getIndex(); + if (cmp == -1) { + throw new BuildException("TimeComparison value not set."); + } + if (cmp == 0) { + return t1 - g < t2; + } + if (cmp == 1) { + return t1 + g > t2; + } + return Math.abs(t1 - t2) <= g; + } + + /** + * Compare two times. + * @param t1 the first time to compare. + * @param t2 the second time to compare. + * @return a negative integer, a positive integer, or zero as t1 is + * before, after, or equal to t2 accounting for the default granularity. + */ + public static int compare(long t1, long t2) { + return compare(t1, t2, FILE_UTILS.getFileTimestampGranularity()); + } + + /** + * Compare two times. + * @param t1 the first time to compare. + * @param t2 the second time to compare. + * @param g the timestamp granularity. + * @return a negative integer, a positive integer, or zero as t1 is + * before, after, or equal to t2 accounting for the specified granularity. + */ + public static int compare(long t1, long t2, long g) { + long diff = t1 - t2; + long abs = Math.abs(diff); + return abs > Math.abs(g) ? (int) (diff / abs) : 0; + } + +} + |