/*
* Copyright 2014 The Closure Compiler 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 com.google.javascript.refactoring;
import com.google.common.base.Preconditions;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;
import com.google.javascript.jscomp.CommandLineRunner;
import com.google.javascript.jscomp.SourceFile;
import org.kohsuke.args4j.CmdLineParser;
import org.kohsuke.args4j.Option;
import org.kohsuke.args4j.spi.BooleanOptionHandler;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
* Main binary that drives a RefasterJS refactoring.
*
* @author mknichel@google.com (Mark Knichel)
*/
final class RefasterJs {
@Option(name = "--help",
hidden = true,
handler = BooleanOptionHandler.class,
usage = "Show instructions for how to use RefasterJS")
private boolean displayHelp = false;
@Option(name = "--inputs", usage = "List of input files for the refactoring.")
private List<String> inputs = new ArrayList<>();
@Option(name = "--externs", usage = "List of externs files to use in the compilation.")
private List<String> externs = new ArrayList<>();
@Option(
name = "--refasterjs_template",
usage = "Location of the JS file to use as the RefasterJS template.")
private String refasterJsTemplate = null;
@Option(name = "--include_default_externs",
usage = "Whether to include the standard JavaScript externs. Defaults to true.")
private boolean includeDefaultExterns = true;
@Option(name = "--dry_run",
usage = "Use this to display what changes would be made without applying the changes.")
private boolean dryRun = false;
private void doMain(String[] args) throws Exception {
CmdLineParser parser = new CmdLineParser(this);
parser.parseArgument(args);
if (displayHelp) {
CmdLineParser p = new CmdLineParser(this);
p.printUsage(System.out);
return;
}
Preconditions.checkArgument(
!inputs.isEmpty(), "At least one input must be provided in the --inputs flag.");
Preconditions.checkArgument(
!Strings.isNullOrEmpty(refasterJsTemplate), "--refasterjs_template must be provided");
for (String input : inputs) {
Preconditions.checkArgument(
new File(input).exists(), "Input file %s does not exist.", input);
}
RefasterJsScanner scanner = new RefasterJsScanner();
scanner.loadRefasterJsTemplate(refasterJsTemplate);
RefactoringDriver driver = new RefactoringDriver.Builder(scanner)
.addExterns(includeDefaultExterns
? CommandLineRunner.getDefaultExterns() : ImmutableList.<SourceFile>of())
.addExternsFromFile(externs)
.addInputsFromFile(inputs)
.build();
List<SuggestedFix> fixes = driver.drive();
if (dryRun) {
System.out.println("SuggestedFixes: " + fixes);
} else {
ApplySuggestedFixes.applySuggestedFixesToFiles(fixes);
}
}
public static void main(String[] args) throws Exception {
new RefasterJs().doMain(args);
}
}