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/*
 * Copyright 2020 the original author or authors.
 *
 * 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 org.gradle.process.internal;

import org.gradle.internal.file.PathToFileResolver;
import org.gradle.process.BaseExecSpec;
import org.gradle.process.CommandLineArgumentProvider;
import org.gradle.process.ExecSpec;

import javax.inject.Inject;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;


public class DefaultExecSpec extends DefaultProcessForkOptions implements ExecSpec, ProcessArgumentsSpec.HasExecutable {

    private boolean ignoreExitValue;
    private final ProcessStreamsSpec streamsSpec = new ProcessStreamsSpec();
    private final ProcessArgumentsSpec argumentsSpec = new ProcessArgumentsSpec(this);

    @Inject
    public DefaultExecSpec(PathToFileResolver resolver) {
        super(resolver);
    }

    public void copyTo(ExecSpec targetSpec) {
        // Fork options
        super.copyTo(targetSpec);
        // BaseExecSpec
        copyBaseExecSpecTo(this, targetSpec);
        // ExecSpec
        targetSpec.setArgs(getArgs());
        targetSpec.getArgumentProviders().addAll(getArgumentProviders());
    }

    static void copyBaseExecSpecTo(BaseExecSpec source, BaseExecSpec target) {
        target.setIgnoreExitValue(source.isIgnoreExitValue());
        if (source.getStandardInput() != null) {
            target.setStandardInput(source.getStandardInput());
        }
        if (source.getStandardOutput() != null) {
            target.setStandardOutput(source.getStandardOutput());
        }
        if (source.getErrorOutput() != null) {
            target.setErrorOutput(source.getErrorOutput());
        }
    }

    @Override
    public List getCommandLine() {
        return argumentsSpec.getCommandLine();
    }

    @Override
    public ExecSpec commandLine(Object... arguments) {
        argumentsSpec.commandLine(arguments);
        return this;
    }

    @Override
    public ExecSpec commandLine(Iterable args) {
        argumentsSpec.commandLine(args);
        return this;
    }

    @Override
    public void setCommandLine(List args) {
        argumentsSpec.commandLine(args);
    }

    @Override
    public void setCommandLine(Object... args) {
        argumentsSpec.commandLine(args);
    }

    @Override
    public void setCommandLine(Iterable args) {
        argumentsSpec.commandLine(args);
    }

    @Override
    public ExecSpec args(Object... args) {
        argumentsSpec.args(args);
        return this;
    }

    @Override
    public ExecSpec args(Iterable args) {
        argumentsSpec.args(args);
        return this;
    }

    @Override
    public ExecSpec setArgs(List arguments) {
        argumentsSpec.setArgs(arguments);
        return this;
    }

    @Override
    public ExecSpec setArgs(Iterable arguments) {
        argumentsSpec.setArgs(arguments);
        return this;
    }

    @Override
    public List getArgs() {
        return argumentsSpec.getArgs();
    }

    @Override
    public List getArgumentProviders() {
        return argumentsSpec.getArgumentProviders();
    }

    @Override
    public ExecSpec setIgnoreExitValue(boolean ignoreExitValue) {
        this.ignoreExitValue = ignoreExitValue;
        return this;
    }

    @Override
    public boolean isIgnoreExitValue() {
        return ignoreExitValue;
    }

    @Override
    public BaseExecSpec setStandardInput(InputStream inputStream) {
        streamsSpec.setStandardInput(inputStream);
        return this;
    }

    @Override
    public InputStream getStandardInput() {
        return streamsSpec.getStandardInput();
    }

    @Override
    public BaseExecSpec setStandardOutput(OutputStream outputStream) {
        streamsSpec.setStandardOutput(outputStream);
        return this;
    }

    @Override
    public OutputStream getStandardOutput() {
        return streamsSpec.getStandardOutput();
    }

    @Override
    public BaseExecSpec setErrorOutput(OutputStream outputStream) {
        streamsSpec.setErrorOutput(outputStream);
        return this;
    }

    @Override
    public OutputStream getErrorOutput() {
        return streamsSpec.getErrorOutput();
    }
}