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-rw-r--r--src/java/com/sun/gluegen/ant/StaticGLGenTask.java303
1 files changed, 303 insertions, 0 deletions
diff --git a/src/java/com/sun/gluegen/ant/StaticGLGenTask.java b/src/java/com/sun/gluegen/ant/StaticGLGenTask.java
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+++ b/src/java/com/sun/gluegen/ant/StaticGLGenTask.java
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+package com.sun.gluegen.ant;
+
+/*
+ * StaticGLGenTask.java
+ * Copyright (C) 2003 Rob Grzywinski (rgrzywinski@realityinteractive.com)
+ *
+ * Copying, distribution and use of this software in source and binary
+ * forms, with or without modification, is permitted provided that the
+ * following conditions are met:
+ *
+ * Distributions of source code must reproduce the copyright notice,
+ * this list of conditions and the following disclaimer in the source
+ * code header files; and Distributions of binary code must reproduce
+ * the copyright notice, this list of conditions and the following
+ * disclaimer in the documentation, Read me file, license file and/or
+ * other materials provided with the software distribution.
+ *
+ * The names of Sun Microsystems, Inc. ("Sun") and/or the copyright
+ * holder may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS," WITHOUT A WARRANTY OF ANY
+ * KIND. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, NON-INTERFERENCE, ACCURACY OF
+ * INFORMATIONAL CONTENT OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. THE
+ * COPYRIGHT HOLDER, SUN AND SUN'S LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL THE
+ * COPYRIGHT HOLDER, SUN OR SUN'S LICENSORS BE LIABLE FOR ANY LOST
+ * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGES. YOU ACKNOWLEDGE THAT THIS SOFTWARE IS NOT
+ * DESIGNED, LICENSED OR INTENDED FOR USE IN THE DESIGN, CONSTRUCTION,
+ * OPERATION OR MAINTENANCE OF ANY NUCLEAR FACILITY. THE COPYRIGHT
+ * HOLDER, SUN AND SUN'S LICENSORS DISCLAIM ANY EXPRESS OR IMPLIED
+ * WARRANTY OF FITNESS FOR SUCH USES.
+ */
+
+import java.io.IOException;
+
+import org.apache.tools.ant.BuildException;
+import org.apache.tools.ant.DirectoryScanner;
+import org.apache.tools.ant.Project;
+import org.apache.tools.ant.Task;
+import org.apache.tools.ant.taskdefs.Execute;
+import org.apache.tools.ant.taskdefs.LogStreamHandler;
+import org.apache.tools.ant.types.CommandlineJava;
+import org.apache.tools.ant.types.FileSet;
+import org.apache.tools.ant.types.Path;
+import org.apache.tools.ant.types.PatternSet;
+import org.apache.tools.ant.util.JavaEnvUtils;
+
+/**
+ * <p>An <a href="http://ant.apache.org">ANT</a> {@link org.apache.tools.ant.Task}
+ * for using {@link com.sun.gluegen.opengl.BuildStaticGLInfo}.</p>
+ *
+ * <p>Usage:</p>
+ * <pre>
+ &lt;staticglgen package="[generated files package]"
+ headers="[file pattern of GL headers]"
+ outputdir="[directory to output the generated files]" /&gt;
+ * </pre>
+ *
+ * @author Rob Grzywinski <a href="mailto:rgrzywinski@realityinteractive.com">rgrzywinski@yahoo.com</a>
+ */
+// FIXME: blow out javadoc
+public class StaticGLGenTask extends Task
+{
+ /**
+ * <p>The {@link com.sun.gluegen.opengl.BuildStaticGLInfo} classname.</p>
+ */
+ private static final String GL_GEN = "com.sun.gluegen.opengl.BuildStaticGLInfo";
+
+ // =========================================================================
+ /**
+ * <p>The {@link org.apache.tools.ant.types.CommandlineJava} that is used
+ * to execute {@link com.sun.gluegen.opengl.BuildStaticGLInfo}.</p>
+ */
+ private CommandlineJava glgenCommandline;
+
+ // =========================================================================
+ /**
+ * <p>The package name for the generated files.</p>
+ */
+ private String packageName;
+
+ /**
+ * <p>The output directory.</p>
+ */
+ private String outputDirectory;
+
+ /**
+ * <p>The {@link org.apache.tools.ant.types.FileSet} of GL headers.</p>
+ */
+ private FileSet headerSet = new FileSet();
+
+ // =========================================================================
+ /**
+ * <p>Create and add the VM and classname to {@link org.apache.tools.ant.types.CommandlineJava}.</p>
+ */
+ public StaticGLGenTask()
+ {
+ // create the CommandlineJava that will be used to call BuildStaticGLInfo
+ glgenCommandline = new CommandlineJava();
+
+ // set the VM and classname in the commandline
+ glgenCommandline.setVm(JavaEnvUtils.getJreExecutable("java"));
+ glgenCommandline.setClassname(GL_GEN);
+ }
+
+ // =========================================================================
+ // ANT getters and setters
+ /**
+ * <p>Set the package name for the generated files. This is called by ANT.</p>
+ *
+ * @param packageName the name of the package for the generated files
+ */
+ public void setPackage(String packageName)
+ {
+ log( ("Setting package name to: " + packageName), Project.MSG_VERBOSE);
+ this.packageName = packageName;
+ }
+
+ /**
+ * <p>Set the output directory. This is called by ANT.</p>
+ *
+ * @param directory the output directory
+ */
+ public void setOutputDir(String directory)
+ {
+ log( ("Setting output directory to: " + directory),
+ Project.MSG_VERBOSE);
+ this.outputDirectory = directory;
+ }
+
+ /**
+ * <p>Add a header file to the list. This is called by ANT for a nested
+ * element.</p>
+ *
+ * @return {@link org.apache.tools.ant.types.PatternSet.NameEntry}
+ */
+ public PatternSet.NameEntry createHeader()
+ {
+ return headerSet.createInclude();
+ }
+
+ /**
+ * <p>Add a header file to the list. This is called by ANT for a nested
+ * element.</p>
+ *
+ * @return {@link org.apache.tools.ant.types.PatternSet.NameEntry}
+ */
+ public PatternSet.NameEntry createHeadersFile()
+ {
+ return headerSet.createIncludesFile();
+ }
+
+ /**
+ * <p>Set the set of header patterns. Patterns may be separated by a comma
+ * or a space. This is called by ANT.</p>
+ *
+ * @param headers the string containing the header patterns
+ */
+ public void setHeaders(String headers)
+ {
+ headerSet.setIncludes(headers);
+ }
+
+ /**
+ * <p>Add an optional classpath that defines the location of {@link com.sun.gluegen.opengl.BuildStaticGLInfo}
+ * and <code>BuildStaticGLInfo</code>'s dependencies.</p>
+ *
+ * @returns {@link org.apache.tools.ant.types.Path}
+ */
+ public Path createClasspath()
+ {
+ return glgenCommandline.createClasspath(project).createPath();
+ }
+
+ // =========================================================================
+ /**
+ * <p>Run the task. This involves validating the set attributes, creating
+ * the command line to be executed and finally executing the command.</p>
+ *
+ * @see org.apache.tools.ant.Task#execute()
+ */
+ public void execute()
+ throws BuildException
+ {
+ // validate that all of the required attributes have been set
+ validateAttributes();
+
+ // TODO: add logic to determine if the generated file needs to be
+ // regenerated
+
+ // add the attributes to the CommandlineJava
+ addAttributes();
+
+ log(glgenCommandline.describeCommand(), Project.MSG_VERBOSE);
+
+ // execute the command and throw on error
+ final int error = execute(glgenCommandline.getCommandline());
+ if(error == 1)
+ throw new BuildException( ("BuildStaticGLInfo returned: " + error), location);
+ }
+
+ /**
+ * <p>Ensure that the user specified all required arguments.</p>
+ *
+ * @throws BuildException if there are required arguments that are not
+ * present or not valid
+ */
+ private void validateAttributes()
+ throws BuildException
+ {
+ // validate that the package name is set
+ if(!isValid(packageName))
+ throw new BuildException("Invalid package name: " + packageName);
+
+ // validate that the output directory is set
+ // TODO: switch to file and ensure that it exists
+ if(!isValid(outputDirectory))
+ throw new BuildException("Invalid output directory name: " + outputDirectory);
+
+ // TODO: validate that there are headers set
+ }
+
+ /**
+ * <p>Is the specified string valid? A valid string is non-<code>null</code>
+ * and has a non-zero length.</p>
+ *
+ * @param string the string to be tested for validity
+ * @return <code>true</code> if the string is valid. <code>false</code>
+ * otherwise.
+ */
+ private boolean isValid(String string)
+ {
+ // check for null
+ if(string == null)
+ return false;
+
+ // ensure that the string has a non-zero length
+ // NOTE: must trim() to remove leading and trailing whitespace
+ if(string.trim().length() < 1)
+ return false;
+
+ // the string is valid
+ return true;
+ }
+
+ /**
+ * <p>Add all of the attributes to the command line. They have already
+ * been validated.</p>
+ */
+ private void addAttributes()
+ {
+ // add the package name
+ glgenCommandline.createArgument().setValue(packageName);
+
+ // add the output directory name
+ glgenCommandline.createArgument().setValue(outputDirectory);
+
+ // add the header -files- from the FileSet
+ headerSet.setDir(getProject().getBaseDir());
+ DirectoryScanner directoryScanner = headerSet.getDirectoryScanner(getProject());
+ String[] directoryFiles = directoryScanner.getIncludedFiles();
+ for(int i=0; i<directoryFiles.length; i++)
+ {
+ glgenCommandline.createArgument().setValue(directoryFiles[i]);
+ }
+ }
+
+ /**
+ * <p>Execute {@link com.sun.gluegen.opengl.BuildStaticGLInfo} in a
+ * forked JVM.</p>
+ *
+ * @throws BuildException
+ */
+ private int execute(String[] command)
+ throws BuildException
+ {
+ // create the object that will perform the command execution
+ Execute execute = new Execute(new LogStreamHandler(this, Project.MSG_INFO,
+ Project.MSG_WARN),
+ null);
+
+ // set the project and command line
+ execute.setAntRun(project);
+ execute.setCommandline(command);
+
+ // execute the command
+ try
+ {
+ return execute.execute();
+ } catch(IOException ioe)
+ {
+ throw new BuildException(ioe, location);
+ }
+ }
+}