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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.pkgcache;
import com.google.devtools.build.lib.cmdline.ResolvedTargets;
import com.google.devtools.build.lib.cmdline.TargetParsingException;
import com.google.devtools.build.lib.packages.Package;
import com.google.devtools.build.lib.packages.Target;
import com.google.devtools.build.lib.syntax.Label;
import com.google.devtools.build.lib.util.StringUtilities;
/**
* Common utility methods for target pattern resolution.
*/
public final class TargetPatternResolverUtil {
private TargetPatternResolverUtil() {
// Utility class.
}
// Parse 'label' as a Label, mapping Label.SyntaxException into
// TargetParsingException.
public static Label label(String label) throws TargetParsingException {
try {
return Label.parseAbsolute(label);
} catch (Label.SyntaxException e) {
throw invalidTarget(label, e.getMessage());
}
}
/**
* Returns a new exception indicating that a command-line target is invalid.
*/
private static TargetParsingException invalidTarget(String packageName,
String additionalMessage) {
return new TargetParsingException("invalid target format: '" +
StringUtilities.sanitizeControlChars(packageName) + "'; " +
StringUtilities.sanitizeControlChars(additionalMessage));
}
public static String getParsingErrorMessage(String message, String originalPattern) {
if (originalPattern == null) {
return message;
} else {
return String.format("while parsing '%s': %s", originalPattern, message);
}
}
public static ResolvedTargets<Target> resolvePackageTargets(Package pkg,
FilteringPolicy policy) {
ResolvedTargets.Builder<Target> builder = ResolvedTargets.builder();
for (Target target : pkg.getTargets()) {
if (policy.shouldRetain(target, false)) {
builder.add(target);
}
}
return builder.build();
}
}
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