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Add combined expression evaluator to file activation property
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43 changes: 43 additions & 0 deletions
43
...-model-builder/src/main/java/org/apache/maven/model/condition/CombinedValueEvaluator.java
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| package org.apache.maven.model.condition; | ||
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| /* | ||
| * 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. | ||
| */ | ||
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| /** | ||
| * @author Loïc B. | ||
| */ | ||
| public interface CombinedValueEvaluator | ||
| { | ||
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| /** | ||
| * Parses a string representing a condition, and evaluates its result using simple boolean logic. | ||
| * | ||
| * @param expression Boolean expression to be evaluated. Format : <br/> | ||
| * all(condition1,condition2,...) or and(condition1,condition2,...) : will be true if all conditions are | ||
| * true<br/> | ||
| * any(condition1,condition2,...) or or(condition1,condition2,...) : will be true if at least one of the | ||
| * conditions is true Nested operators are not supported.<br/> | ||
| * If there is no condition expressed, the string is simply passed to the evaluator as-is. | ||
| * @param evaluator Actual evaluator for a single condition. Will be called once for each condition found in the | ||
| * expression | ||
| * @return result of evaluation, depending on expression contents | ||
| */ | ||
| boolean evaluate( String expression, SingleValueEvaluator evaluator ); | ||
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| } |
69 changes: 69 additions & 0 deletions
69
...builder/src/main/java/org/apache/maven/model/condition/DefaultCombinedValueEvaluator.java
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| package org.apache.maven.model.condition; | ||
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| /* | ||
| * 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. | ||
| */ | ||
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| import java.util.regex.Matcher; | ||
| import java.util.regex.Pattern; | ||
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| import org.codehaus.plexus.component.annotations.Component; | ||
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| /** | ||
| * @author Loïc B. | ||
| */ | ||
| @Component( role = CombinedValueEvaluator.class ) | ||
| public class DefaultCombinedValueEvaluator | ||
| implements CombinedValueEvaluator | ||
| { | ||
| private static final Pattern PATTERN_AND = Pattern.compile( "^(?:all|and)\\((?:([^,]*),)*([^,]*)\\)$" ); | ||
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| private static final Pattern PATTERN_OR = Pattern.compile( "^(?:any|or)\\((?:([^,]*),)*([^,]*)\\)$" ); | ||
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| /* | ||
| * (non-Javadoc) | ||
| * @see org.apache.maven.model.profile.activation.CombinedValueEvaluator#evaluate(java.lang.String, | ||
| * org.apache.maven.model.profile.activation.SingleValueEvaluator) | ||
| */ | ||
| @Override | ||
| public boolean evaluate( String expression, SingleValueEvaluator evaluator ) | ||
| { | ||
| Matcher andMatcher = PATTERN_AND.matcher( expression ); | ||
| if ( andMatcher.matches() ) | ||
| { | ||
| boolean result = true; | ||
| for ( int i = 1; i <= andMatcher.groupCount(); i++ ) | ||
| { | ||
| result &= evaluator.evaluate( andMatcher.group( i ) ); | ||
| } | ||
| return result; | ||
| } | ||
| Matcher orMatcher = PATTERN_OR.matcher( expression ); | ||
| if ( orMatcher.matches() ) | ||
| { | ||
| boolean result = false; | ||
| for ( int i = 1; i <= andMatcher.groupCount(); i++ ) | ||
| { | ||
| result |= evaluator.evaluate( orMatcher.group( i ) ); | ||
| } | ||
| return result; | ||
| } | ||
| // Default | ||
| return evaluator.evaluate( expression ); | ||
| } | ||
| } |
32 changes: 32 additions & 0 deletions
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maven-model-builder/src/main/java/org/apache/maven/model/condition/SingleValueEvaluator.java
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| package org.apache.maven.model.condition; | ||
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| /* | ||
| * 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. | ||
| */ | ||
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| /** | ||
| * @author Loïc B. | ||
| */ | ||
| public interface SingleValueEvaluator | ||
| { | ||
| /** | ||
| * Evaluiates the expression and returns a boolean result. Expression evaluation and intended result is | ||
| * implementation-dependent. | ||
| */ | ||
| boolean evaluate( String expression ); | ||
| } |
78 changes: 78 additions & 0 deletions
78
...ilder/src/main/java/org/apache/maven/model/profile/activation/FileExistenceEvaluator.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,78 @@ | ||
| package org.apache.maven.model.profile.activation; | ||
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| /* | ||
| * 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. | ||
| */ | ||
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| import java.io.File; | ||
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| import org.apache.maven.model.condition.SingleValueEvaluator; | ||
| import org.apache.maven.model.path.PathTranslator; | ||
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| /** | ||
| * @author Loïc B. | ||
| */ | ||
| public class FileExistenceEvaluator | ||
| implements SingleValueEvaluator | ||
| { | ||
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| private final boolean missing; | ||
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| private final PathTranslator pathTranslator; | ||
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| private final File basedir; | ||
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| /** | ||
| * Creates the FileExistenceEvaluator for missing or existing files. | ||
| * | ||
| * @param missing true if the file should be missing, false if it should be existing | ||
| * @param pathTranslator path translator implementation to be used | ||
| */ | ||
| public FileExistenceEvaluator( boolean missing, PathTranslator pathTranslator, File basedir ) | ||
| { | ||
| this.missing = missing; | ||
| this.pathTranslator = pathTranslator; | ||
| this.basedir = basedir; | ||
| } | ||
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| /* (non-Javadoc) | ||
| * @see org.apache.maven.model.profile.activation.SingleValueEvaluator#evaluate(java.lang.String) | ||
| */ | ||
| @Override | ||
| public boolean evaluate( String path ) | ||
| { | ||
| boolean reversed = false; | ||
| if ( path.startsWith( "!" ) ) | ||
| { | ||
| reversed = true; | ||
| path = path.substring( 1 ); | ||
| } | ||
| path = pathTranslator.alignToBaseDirectory( path, basedir ); | ||
| File f = new File( path ); | ||
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| if ( !f.isAbsolute() ) | ||
| { | ||
| return false; | ||
| } | ||
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| boolean fileExists = f.exists(); | ||
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| return missing ^ reversed ? !fileExists : fileExists; | ||
| } | ||
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| } |
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