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/*
* Copyright (C) 2013 The Android Open Source Project
*
* 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.android.sched.util.codec;
import com.android.sched.util.config.ConfigurationError;
import com.android.sched.util.file.FileOrDirectory.Existence;
import com.android.sched.util.file.FileOrDirectory.Permission;
import com.android.sched.util.file.InputStreamFile;
import com.android.sched.util.location.Location;
import com.android.sched.util.location.StandardInputLocation;
import java.io.IOException;
import javax.annotation.Nonnull;
/**
* This {@link InputStreamCodec} is used to create an instance of {@link InputStreamFile}.
*/
public class InputStreamCodec extends StreamCodec<InputStreamFile> {
public InputStreamCodec() {
super(Existence.MUST_EXIST, Permission.READ);
}
@Nonnull
public InputStreamCodec allowStandardInput() {
this.allowStandardIO = true;
return this;
}
@Override
@Nonnull
public String formatValue(@Nonnull InputStreamFile stream) {
if (stream.isStandard()) {
return STANDARD_IO_NAME;
} else {
return stream.getPath();
}
}
@Override
public void checkValue(@Nonnull CodecContext context, @Nonnull InputStreamFile stream)
throws CheckingException {
if (stream.isStandard() && !allowStandardIO) {
throw new CheckingException("Standard input is not allowed");
}
}
@Override
@Nonnull
public InputStreamFile parseString(@Nonnull CodecContext context, @Nonnull String string) {
try {
return checkString(context, string);
} catch (ParsingException e) {
throw new ConfigurationError(e);
}
}
@Nonnull
private static final Location STANDARD_INPUT_LOCATION = new StandardInputLocation();
@Override
@Nonnull
public InputStreamFile checkString(@Nonnull CodecContext context, @Nonnull String string)
throws ParsingException {
if (string.equals(STANDARD_IO_NAME)) {
if (!allowStandardIO) {
throw new ParsingException("Standard input can not be used");
}
return new InputStreamFile(context.getStandardInput(), STANDARD_INPUT_LOCATION);
} else {
try {
return new InputStreamFile(context.getWorkingDirectory(), string);
} catch (IOException e) {
throw new ParsingException(e.getMessage(), e);
}
}
}
}
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