cvs commit: xml-xalan/java/src/synthetic JavaUtils.java

[jkesselm]

jkesselm    00/10/05 13:19:43

  Added:       java/src/synthetic JavaUtils.java
  Log:
  Adopt the javac-invoking code into synthetic.*. (Break BSF
  dependency, prepare for some generalizations.)
  
  Revision  Changes    Path
  1.1                  xml-xalan/java/src/synthetic/JavaUtils.java
  
  Index: JavaUtils.java
  ===================================================================
  /* $Id: JavaUtils.java,v 1.1 2000/10/05 20:19:32 jkesselm Exp $ */
  
  package synthetic;
  
  import java.io.IOException;
  
  public class JavaUtils
  {
    // Debug flag - generates debug stuff if true.
    private static boolean debug = false;
  
    // Temporarily copied from JavaEngine...
    private static boolean cantLoadCompiler=false; // One-time flag for 
following
  
    // ADDED BY JKESS; callers want control over the -g option.
    public static void setDebug(boolean newDebug)
    {
      debug=newDebug;
    }
  
    public static boolean JDKcompile(String fileName, String classPath)
    {
      if (debug)
      {
        System.err.println ("JavaEngine: Compiling " + fileName);
        System.err.println ("JavaEngine: Classpath is " + classPath);
      }
      
      String option = debug ? "-g" : "-O";
  
      if(!cantLoadCompiler)
        {
    String args[] = {
      option,
      "-classpath",
      classPath,
      fileName
    };
    try
      {
        return new sun.tools.javac.Main(System.err, "javac").compile(args);
      }
    catch (Throwable th)
      {
        System.err.println("WARNING: Unable to load Java 1.1 compiler.");
        System.err.println("\tSwitching to command-line invocation.");
        cantLoadCompiler=true;
      }
        }
      
      // Can't load javac; try exec'ing it.
      String args[] = {
        "javac",
        option,
        "-classpath",
        classPath,
        fileName
      };
      try
        {
    Process p=java.lang.Runtime.getRuntime().exec(args);
    p.waitFor();
    return(p.exitValue()!=0);
        }
      catch(IOException e)
        {
    System.err.println("ERROR: IO exception during exec(javac).");
        }
      catch(SecurityException e)
        {
    System.err.println("ERROR: Unable to create subprocess to exec(javac).");
        }
      catch(InterruptedException e)
        {
    System.err.println("ERROR: Wait for exec(javac) was interrupted.");
        }
      return false;
    }
  }