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// Copyright 2014 Google Inc. All rights reserved.
//
// Licensed 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 com.google.devtools.build.lib.analysis.config;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.util.RegexFilter;
import com.google.devtools.build.lib.util.RegexFilter.RegexFilterConverter;
import com.google.devtools.common.options.Converter;
import com.google.devtools.common.options.OptionsParsingException;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
/**
* Models options that can be added to a command line when a label matches a
* given {@link RegexFilter}.
*/
public class PerLabelOptions implements Serializable {
/** The filter used to match labels */
private final RegexFilter regexFilter;
/** The list of options to add when the filter matches a label */
private final List<String> optionsList;
/**
* Converts a String to a {@link PerLabelOptions} object. The syntax of the
* string is {@code regex_filter@option_1,option_2,...,option_n}. Where
* regex_filter stands for the String representation of a {@link RegexFilter},
* and {@code option_1} to {@code option_n} stand for arbitrary command line
* options. If an option contains a comma it has to be quoted with a
* backslash. Options can contain @. Only the first @ is used to split the
* string.
*/
public static class PerLabelOptionsConverter implements Converter<PerLabelOptions> {
@Override
public PerLabelOptions convert(String input) throws OptionsParsingException {
int atIndex = input.indexOf('@');
RegexFilterConverter converter = new RegexFilter.RegexFilterConverter();
if (atIndex < 0) {
return new PerLabelOptions(converter.convert(input), ImmutableList.<String> of());
} else {
String filterPiece = input.substring(0, atIndex);
String optionsPiece = input.substring(atIndex + 1);
List<String> optionsList = new ArrayList<>();
for (String option : optionsPiece.split("(?<!\\\\),")) { // Split on ',' but not on '\,'
if (option != null && !option.trim().isEmpty()) {
optionsList.add(option.replace("\\,", ","));
}
}
return new PerLabelOptions(converter.convert(filterPiece), optionsList);
}
}
@Override
public String getTypeDescription() {
return "a comma-separated list of regex expressions with prefix '-' specifying"
+ " excluded paths followed by an @ and a comma separated list of options";
}
}
public PerLabelOptions(RegexFilter regexFilter, List<String> optionsList) {
this.regexFilter = regexFilter;
this.optionsList = optionsList;
}
/**
* @return true if the given label is matched by the {@link RegexFilter}.
*/
public boolean isIncluded(Label label) {
return regexFilter.isIncluded(label.toString());
}
/**
* @return true if the execution path (which includes the base name of the file)
* of the given file is matched by the {@link RegexFilter}.
*/
public boolean isIncluded(Artifact artifact) {
return regexFilter.isIncluded(artifact.getExecPathString());
}
/**
* Returns the list of options to add to a command line.
*/
public List<String> getOptions() {
return optionsList;
}
RegexFilter getRegexFilter() {
return regexFilter;
}
@Override
public String toString() {
return regexFilter + " Options: " + optionsList;
}
@Override
public boolean equals(Object other) {
PerLabelOptions otherOptions =
other instanceof PerLabelOptions ? (PerLabelOptions) other : null;
return this == other || (otherOptions != null &&
this.regexFilter.equals(otherOptions.regexFilter) &&
this.optionsList.equals(otherOptions.optionsList));
}
@Override
public int hashCode() {
return Objects.hash(regexFilter, optionsList);
}
}
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