GroovyでJavaのpackage-info.javaを一括生成するスクリプト

README

RubyでJavaのpackage-info.javaを一括生成するスクリプト
http://d.hatena.ne.jp/tbpg/20120808/1344447924

をGroovyにしてみた。

generatePackageInfo.groovy

import java.nio.file.*
import java.nio.file.attribute.*
import static java.nio.file.FileVisitResult.CONTINUE
import static groovy.io.FileType.FILES

def PACKAGE_INFO = 'package-info.java'
def SOURCE_DIR = './src'
def package_detail = '// TODO パッケージ内容の詳細を記述してください'

def generate_package_info_code = { package_name ->
"""\
/**
 * ${package_name}パッケージ。
 *
 * <pre>
 * ${package_detail}
 * </pre>
 *
 */
package ${package_name};
"""
}

def generate_package_info_file = {file, code ->
    Files.write(file.resolve(PACKAGE_INFO), code.getBytes())
}

Path root = Paths.get(SOURCE_DIR)
Files.walkFileTree(root, new SimpleFileVisitor<Path>() {
  public FileVisitResult preVisitDirectory(Path file, BasicFileAttributes attrs) {
    if (root == file) return CONTINUE
    def name = root.relativize(file).toString().replaceAll('/', '.')
    def package_info_code = generate_package_info_code(name)
    generate_package_info_file(file, package_info_code) 
    CONTINUE
  }
}
);

println "出力完了。出力結果"
root.toFile().eachFileRecurse(FILES) {
  if (it.name == PACKAGE_INFO) println it
}