skinny.task.AssetsPrecompileTask.scala Maven / Gradle / Ivy

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skinny-assets
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package skinny.task

import java.io.File
import java.nio.charset.Charset

import org.apache.commons.io.FileUtils

import scala.collection.JavaConverters._
import skinny.assets._
import skinny.exception._

/**
 * assets:precompile task runner.
 */
object AssetsPrecompileTask {

  private[this] val coffeeScriptCompiler = CoffeeScriptCompiler()
  private[this] val lessCompiler = LessCompiler
  private[this] val sassCompiler = SassCompiler

  /**
   * skinny.task.AssetsPrecompileTask.main(Array("basedir"))
   */
  def main(args: Array[String]) {
    val baseDir = args.headOption.getOrElse(".") + "/src/main/webapp/WEB-INF/assets"
    val outputDir = args.headOption.getOrElse(".") + "/src/main/webapp/assets"

    FileUtils.forceMkdir(new File(baseDir))
    FileUtils.forceMkdir(new File(baseDir + "/js"))
    FileUtils.forceMkdir(new File(baseDir + "/css"))
    FileUtils.forceMkdir(new File(baseDir + "/coffee"))
    FileUtils.forceMkdir(new File(baseDir + "/less"))
    FileUtils.forceMkdir(new File(baseDir + "/sass"))
    FileUtils.forceMkdir(new File(baseDir + "/scss"))

    FileUtils.forceMkdir(new File(outputDir))

    FileUtils.copyDirectory(new File(baseDir + "/js"), new File(outputDir + "/js"))
    FileUtils.copyDirectory(new File(baseDir + "/css"), new File(outputDir + "/css"))

    // CoffeeScript
    FileUtils.listFiles(new File(baseDir + "/coffee"), Array("coffee"), true).asScala.foreach { file =>
      val code = FileUtils.readFileToString(file, Charset.defaultCharset())
      val compiledCode = coffeeScriptCompiler.compile(file.getAbsolutePath, code)
      val output = new File(outputDir + "/js/" + file.getName.replaceFirst("\\.coffee$", ".js"))
      FileUtils.forceMkdir(output.getParentFile)
      if (output.exists()) {
        throw new AssetsPrecompileFailureException("[ERROR] assets:precompile task failed! Reason: \"" + output.getPath + "\" already exists.")
      } else {
        FileUtils.write(output, compiledCode, Charset.defaultCharset())
      }
    }

    // LESS
    FileUtils.listFiles(new File(baseDir + "/less"), Array("less"), true).asScala.foreach { file =>
      val code = FileUtils.readFileToString(file, Charset.defaultCharset())
      val compiledCode = lessCompiler.compile(file.getAbsolutePath, code)
      val output = new File(outputDir + "/css/" + file.getName.replaceFirst("\\.less$", ".css"))
      FileUtils.forceMkdir(output.getParentFile)
      if (output.exists()) {
        throw new AssetsPrecompileFailureException("[ERROR] assets:precompile task failed! Reason: \"" + output.getPath + "\" already exists.")
      } else {
        FileUtils.write(output, compiledCode, Charset.defaultCharset())
      }
    }

    // Sass: scss
    val inScssDir = FileUtils.listFiles(new File(baseDir + "/scss"), Array("scss"), true).asScala
    val inSassDir = FileUtils.listFiles(new File(baseDir + "/sass"), Array("scss"), true).asScala
    (inScssDir ++ inSassDir).foreach { file =>
      val code = FileUtils.readFileToString(file, Charset.defaultCharset())
      val compiledCode = sassCompiler.compile(file.getAbsolutePath, code)
      val output = new File(outputDir + "/css/" + file.getName.replaceFirst("\\.scss$", ".css"))
      FileUtils.forceMkdir(output.getParentFile)
      if (output.exists()) {
        throw new AssetsPrecompileFailureException("[ERROR] assets:precompile task failed! Reason: \"" + output.getPath + "\" already exists.")
      } else {
        FileUtils.write(output, compiledCode, Charset.defaultCharset())
      }
    }

    // Sass: old-style sass
    FileUtils.listFiles(new File(baseDir + "/sass"), Array("sass"), true).asScala.foreach { file =>
      val code = FileUtils.readFileToString(file, Charset.defaultCharset())
      val compiledCode = sassCompiler.compileIndented(file.getAbsolutePath, code)
      val output = new File(outputDir + "/css/" + file.getName.replaceFirst("\\.sass$", ".css"))
      FileUtils.forceMkdir(output.getParentFile)
      if (output.exists()) {
        throw new AssetsPrecompileFailureException("[ERROR] assets:precompile task failed! Reason: \"" + output.getPath + "\" already exists.")
      } else {
        FileUtils.write(output, compiledCode, Charset.defaultCharset())
      }
    }
  }

}