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JMockit is a Java toolkit for automated developer testing. It contains mocking/faking APIs and a code coverage tool, supporting both JUnit and TestNG. The mocking APIs allow all kinds of Java code, without testability restrictions, to be tested in isolation from selected dependencies.

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/*
 * Copyright (c) 2006 JMockit developers
 * This file is subject to the terms of the MIT license (see LICENSE.txt).
 */
package mockit.coverage.reporting;

import java.io.*;
import java.util.regex.*;
import javax.annotation.*;

public final class OutputFile extends PrintWriter
{
   private static final Pattern PATH_SEPARATOR = Pattern.compile("/");

   @Nonnull private final String relPathToOutDir;
   private final boolean withPrettyPrint;

   public OutputFile(@Nonnull File file) throws IOException {
      super(file, "UTF-8");
      relPathToOutDir = "";
      withPrettyPrint = false;
   }

   public OutputFile(@Nonnull String outputDir, @Nonnull String sourceFilePath) throws IOException {
      super(getOutputFileCreatingDirIfNeeded(outputDir, sourceFilePath));
      relPathToOutDir = getRelativeSubPathToOutputDir(sourceFilePath);
      withPrettyPrint = true;
   }

   @Nonnull
   private static File getOutputFileCreatingDirIfNeeded(@Nonnull String outputDir, @Nonnull String sourceFilePath) {
      File outputFile = getOutputFile(outputDir, sourceFilePath);
      File parentDir = outputFile.getParentFile();

      if (!parentDir.exists()) {
         boolean outputDirCreated = parentDir.mkdirs();
         assert outputDirCreated : "Failed to create output dir: " + outputDir;
      }

      return outputFile;
   }

   @Nonnull
   static File getOutputFile(@Nonnull String outputDir, @Nonnull String sourceFilePath) {
      int p = sourceFilePath.lastIndexOf('.');
      String outputFileName = sourceFilePath.substring(0, p) + ".html";
      File outputFile = new File(outputDir, outputFileName);
      return outputFile;
   }

   @Nonnull
   private static String getRelativeSubPathToOutputDir(@Nonnull String filePath) {
      StringBuilder cssRelPath = new StringBuilder();
      int n = PATH_SEPARATOR.split(filePath).length;

      for (int i = 1; i < n; i++) {
         cssRelPath.append("../");
      }

      return cssRelPath.toString();
   }

   public void writeCommonHeader(@Nonnull String pageTitle) {
      println("");
      println("");
      println("");
      println("  " + pageTitle + "");
      println("  ");
      println("  ");
      println("  ");
      println("  ");

      if (withPrettyPrint) {
         println("  ");
      }

      println("");
      println(withPrettyPrint ? "" : "");
   }

   public void writeCommonFooter() {
      println("");
      println("");
   }
}