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// Copyright 2018 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.lcovmerger;
import com.google.auto.value.AutoValue;
import com.google.common.collect.ImmutableList;
import java.util.List;
import javax.annotation.Nullable;
@AutoValue
abstract class LcovMergerFlags {
@Nullable
abstract String coverageDir();
@Nullable
abstract String reportsFile();
abstract String outputFile();
abstract List<String> filterSources();
/** Parse flags in the form of "--coverage_dir=... -output_file=..." */
static LcovMergerFlags parseFlags(String[] args) {
ImmutableList.Builder<String> filterSources = new ImmutableList.Builder<>();
String coverageDir = null;
String reportsFile = null;
String outputFile = null;
for (String arg : args) {
if (!arg.startsWith("--")) {
throw new IllegalArgumentException("Argument (" + arg + ") should start with --");
}
String[] parts = arg.substring(2).split("=", 2);
if (parts.length != 2) {
throw new IllegalArgumentException("There should be = in argument (" + arg + ")");
}
switch (parts[0]) {
case "coverage_dir":
coverageDir = parts[1];
break;
case "reports_file":
reportsFile = parts[1];
break;
case "output_file":
outputFile = parts[1];
break;
case "filter_sources":
filterSources.add(parts[1]);
break;
default:
throw new IllegalArgumentException("Unknown flag " + arg);
}
}
if (coverageDir == null && reportsFile == null) {
throw new IllegalArgumentException(
"At least one of --coverage_dir or --reports_file should be specified.");
}
if (coverageDir != null && reportsFile != null) {
throw new IllegalArgumentException(
"Only one of --coverage_dir or --reports_file must be specified.");
}
if (outputFile == null) {
throw new IllegalArgumentException("--output_file was not specified.");
}
return new AutoValue_LcovMergerFlags(
coverageDir, reportsFile, outputFile, filterSources.build());
}
}
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