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// Copyright 2014 The Bazel Authors. 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.util;
import com.google.devtools.build.lib.vfs.PathFragment;
import com.google.devtools.common.options.Converter;
import com.google.devtools.common.options.Converters;
import com.google.devtools.common.options.OptionsParser.UnparsedOptionValueDescription;
import com.google.devtools.common.options.OptionsParsingException;
import com.google.devtools.common.options.OptionsProvider;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* Blaze-specific option utilities.
*/
public final class OptionsUtils {
/**
* Returns a string representation of the non-hidden specified options; option values are
* shell-escaped.
*/
public static String asShellEscapedString(Iterable<UnparsedOptionValueDescription> optionsList) {
StringBuilder result = new StringBuilder();
for (UnparsedOptionValueDescription option : optionsList) {
if (option.isHidden()) {
continue;
}
if (result.length() != 0) {
result.append(' ');
}
String value = option.getUnparsedValue();
if (option.isBooleanOption()) {
boolean isEnabled = false;
try {
isEnabled = new Converters.BooleanConverter().convert(value);
} catch (OptionsParsingException e) {
throw new RuntimeException("Unexpected parsing exception", e);
}
result.append(isEnabled ? "--" : "--no").append(option.getName());
} else {
result.append("--").append(option.getName());
if (value != null) { // Can be null for Void options.
result.append("=").append(ShellEscaper.escapeString(value));
}
}
}
return result.toString();
}
/**
* Returns a string representation of the non-hidden explicitly or implicitly
* specified options; option values are shell-escaped.
*/
public static String asShellEscapedString(OptionsProvider options) {
return asShellEscapedString(options.asListOfUnparsedOptions());
}
/**
* Returns a string representation of the non-hidden explicitly or implicitly
* specified options, filtering out any sensitive options; option values are
* shell-escaped.
*/
public static String asFilteredShellEscapedString(OptionsProvider options,
Iterable<UnparsedOptionValueDescription> optionsList) {
return asShellEscapedString(optionsList);
}
/**
* Returns a string representation of the non-hidden explicitly or implicitly
* specified options, filtering out any sensitive options; option values are
* shell-escaped.
*/
public static String asFilteredShellEscapedString(OptionsProvider options) {
return asFilteredShellEscapedString(options, options.asListOfUnparsedOptions());
}
/**
* Converter from String to PathFragment.
*/
public static class PathFragmentConverter
implements Converter<PathFragment> {
@Override
public PathFragment convert(String input) {
return new PathFragment(input);
}
@Override
public String getTypeDescription() {
return "a path";
}
}
/**
* Converter from String to PathFragment.
*
* <p>Complains if the path is not absolute.
*/
public static class AbsolutePathFragmentConverter
implements Converter<PathFragment> {
@Override
public PathFragment convert(String input) throws OptionsParsingException {
PathFragment pathFragment = new PathFragment(input);
if (!pathFragment.isAbsolute()) {
throw new OptionsParsingException("Expected absolute path, found " + input);
}
return pathFragment;
}
@Override
public String getTypeDescription() {
return "an absolute path";
}
}
/**
* Converts from a colon-separated list of strings into a list of PathFragment instances.
*/
public static class PathFragmentListConverter
implements Converter<List<PathFragment>> {
@Override
public List<PathFragment> convert(String input) {
List<PathFragment> list = new ArrayList<>();
for (String piece : input.split(":")) {
if (!piece.isEmpty()) {
list.add(new PathFragment(piece));
}
}
return Collections.unmodifiableList(list);
}
@Override
public String getTypeDescription() {
return "a colon-separated list of paths";
}
}
}
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