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Diffstat (limited to 'src/net/java/games/gluegen/ant/GlueGenTask.java')
| -rw-r--r-- | src/net/java/games/gluegen/ant/GlueGenTask.java | 493 |
1 files changed, 493 insertions, 0 deletions
diff --git a/src/net/java/games/gluegen/ant/GlueGenTask.java b/src/net/java/games/gluegen/ant/GlueGenTask.java new file mode 100644 index 000000000..531f1198e --- /dev/null +++ b/src/net/java/games/gluegen/ant/GlueGenTask.java @@ -0,0 +1,493 @@ +package net.java.games.gluegen.ant; + +/* + * GlueGenTask.java + * Copyright (C) 2003 Rob Grzywinski ([email protected]) + * + * 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 java.util.Iterator; +import java.util.LinkedList; +import java.util.List; + +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.DirSet; +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.types.Reference; +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 net.java.games.gluegen.GlueGen}.</p> + * + * <p>Usage:</p> + * <pre> + <gluegen src="[source C file]" + includes="[optional directory pattern of include files to include]" + excludes="[optional directory pattern of include files to exclude]" + includeRefid="[optional FileSet or DirSet for include files]" + literalInclude="[optional hack to get around FileSet / DirSet issues with different drives]" + emitter="[emitter class name]" + config="[configuration file]" /> + * </pre> + * + * @author Rob Grzywinski <a href="mailto:[email protected]">[email protected]</a> + */ +// FIXME: blow out javadoc +// NOTE: this has not been exhaustively tested +public class GlueGenTask extends Task +{ + /** + * <p>The {@link net.java.games.gluegen.GlueGen} classname.</p> + */ + private static final String GLUE_GEN = "net.java.games.gluegen.GlueGen"; + + // ========================================================================= + /** + * <p>The {@link org.apache.tools.ant.types.CommandlineJava} that is used + * to execute {@link net.java.games.gluegen.GlueGen}.</p> + */ + private CommandlineJava gluegenCommandline; + + // ========================================================================= + /** + * <p>The name of the emitter class.</p> + */ + private String emitter; + + /** + * <p>The configuration file name.</p> + */ + private String configuration; + + /** + * <p>The name of the source C file that is to be parsed.</p> + */ + private String sourceFile; + + /** + * <p>The {@link org.apache.tools.ant.types.FileSet} of includes.</p> + */ + private FileSet includeSet = new FileSet(); + + /** + * <p>Because a {@link org.apache.tools.ant.types.FileSet} will include + * everything in its base directory if it is left untouched, the <code>includeSet</code> + * must only be added to the set of includes if it has been <i>explicitly</i> + * set.</p> + */ + private boolean usedIncludeSet = false; // by default it is not used + + /** + * <p>The set of include sets. This allows includes to be added in multiple + * fashions.</p> + */ + // FIXME: rename to listXXXX + private List setOfIncludeSets = new LinkedList(); + + /** + * <p>A single literal directory to include. This is to get around the + * fact that neither {@link org.apache.tools.ant.types.FileSet} nor + * {@link org.apache.tools.ant.types.DirSet} can handle multiple drives in + * a sane manner. If <code>null</code> then it has not been specified.</p> + */ + private String literalInclude; + + // ========================================================================= + /** + * <p>Create and add the VM and classname to {@link org.apache.tools.ant.types.CommandlineJava}.</p> + */ + public GlueGenTask() + { + // create the CommandlineJava that will be used to call GlueGen + gluegenCommandline = new CommandlineJava(); + + // set the VM and classname in the commandline + gluegenCommandline.setVm(JavaEnvUtils.getJreExecutable("java")); + gluegenCommandline.setClassname(GLUE_GEN); + } + + // ========================================================================= + // ANT getters and setters + /** + * <p>Set the emitter class name. This is called by ANT.</p> + * + * @param emitter the name of the emitter class + */ + public void setEmitter(String emitter) + { + log( ("Setting emitter class name to: " + emitter), Project.MSG_VERBOSE); + this.emitter = emitter; + } + + /** + * <p>Set the configuration file name. This is called by ANT.</p> + * + * @param configuration the name of the configuration file + */ + public void setConfig(String configuration) + { + log( ("Setting configuration file name to: " + configuration), + Project.MSG_VERBOSE); + this.configuration = configuration; + } + + /** + * <p>Set the source C file that is to be parsed. This is called by ANT.</p> + * + * @param sourceFile the name of the source file + */ + public void setSrc(String sourceFile) + { + log( ("Setting source file name to: " + sourceFile), Project.MSG_VERBOSE); + this.sourceFile = sourceFile; + } + + /** + * <p>Set a single literal include directory. See the <code>literalInclude</code> + * javadoc for more information.</p> + * + * @param directory the directory to include + */ + public void setLiteralInclude(String directory) + { + this.literalInclude = directory; + } + + /** + * <p>Add an include 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 createInclude() + { + usedIncludeSet = true; + return includeSet.createInclude(); + } + + /** + * <p>Add an include 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 createIncludesFile() + { + usedIncludeSet = true; + return includeSet.createIncludesFile(); + } + + /** + * <p>Set the set of include patterns. Patterns may be separated by a comma + * or a space. This is called by ANT.</p> + * + * @param includes the string containing the include patterns + */ + public void setIncludes(String includes) + { + usedIncludeSet = true; + includeSet.setIncludes(includes); + } + + /** + * <p>Add an include file to the list that is to be exluded. This is called + * by ANT for a nested element.</p> + * + * @return {@link org.apache.tools.ant.types.PatternSet.NameEntry} + */ + public PatternSet.NameEntry createExclude() + { + usedIncludeSet = true; + return includeSet.createExclude(); + } + + /** + * <p>Add an exclude 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 createExcludesFile() + { + usedIncludeSet = true; + return includeSet.createExcludesFile(); + } + + /** + * <p>Set the set of exclude patterns. Patterns may be separated by a comma + * or a space. This is called by ANT.</p> + * + * @param includes the string containing the exclude patterns + */ + public void setExcludes(String excludes) + { + usedIncludeSet = true; + includeSet.setExcludes(excludes); + } + + /** + * <p>Set a {@link org.apache.tools.ant.types.Reference} to simplify adding + * of complex sets of files to include. This is called by ANT.</p>? + * + * @param reference a <code>Reference</code> to a {@link org.apache.tools.ant.types.FileSet} + * or {@link org.apache.tools.ant.types.DirSet} + * @throws BuildException if the specified <code>Reference</code> is not + * either a <code>FileSet</code> or <code>DirSet</code> + */ + public void setIncludeRefid(Reference reference) + { + // ensure that the referenced object is either a FileSet or DirSet + final Object referencedObject = reference.getReferencedObject(getProject()); + if( !( (referencedObject instanceof FileSet) || + (referencedObject instanceof DirSet)) ) + { + throw new BuildException("Only FileSets or DirSets are allowed as an include refid."); + } + + // add the referenced object to the set of include sets + setOfIncludeSets.add(referencedObject); + } + + /** + * <p>Add a nested {@link org.apache.tools.ant.types.DirSet} to specify + * the files to include. This is called by ANT.</p> + * + * @param dirset the <code>DirSet</code> to be added + */ + public void addDirset(DirSet dirset) + { + setOfIncludeSets.add(dirset); + } + + /** + * <p>Add an optional classpath that defines the location of {@link net.java.games.gluegen.GlueGen} + * and <code>GlueGen</code>'s dependencies.</p> + * + * @returns {@link org.apache.tools.ant.types.Path} + */ + public Path createClasspath() + { + return gluegenCommandline.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(gluegenCommandline.describeCommand(), Project.MSG_VERBOSE); + + // execute the command and throw on error + final int error = execute(gluegenCommandline.getCommandline()); + if(error == 1) + throw new BuildException( ("GlueGen 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 emitter class is set + if(!isValid(emitter)) + throw new BuildException("Invalid emitter class name: " + emitter); + + // validate that the configuration file is set + if(!isValid(configuration)) + throw new BuildException("Invalid configuration file name: " + configuration); + + // validate that the source file is set + if(!isValid(sourceFile)) + throw new BuildException("Invalid source file name: " + sourceFile); + + // CHECK: do there need to be includes to be valid? + } + + /** + * <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() + throws BuildException + { + // NOTE: GlueGen uses concatenated flag / value rather than two + // separate arguments + + // add the emitter class name + gluegenCommandline.createArgument().setValue("-E" + emitter); + + // add the configuration file name + gluegenCommandline.createArgument().setValue("-C" + configuration); + + // add the includedSet to the setOfIncludeSets to simplify processing + // all types of include sets ONLY if it has been set. + // NOTE: see the usedIncludeSet member javadoc for more info + // NOTE: references and nested DirSets have already been added to the + // set of include sets + if(usedIncludeSet) + { + includeSet.setDir(getProject().getBaseDir()); // NOTE: the base dir must be set + setOfIncludeSets.add(includeSet); + } + + // iterate over all include sets and add their directories to the + // list of included directories. + final List includedDirectories = new LinkedList(); + for(Iterator includes=setOfIncludeSets.iterator(); includes.hasNext(); ) + { + // get the included set and based on its type add the directories + // to includedDirectories + Object include = (Object)includes.next(); + final String[] directoryDirs; + if(include instanceof FileSet) + { + final FileSet fileSet = (FileSet)include; + DirectoryScanner directoryScanner = fileSet.getDirectoryScanner(getProject()); + directoryDirs = directoryScanner.getIncludedDirectories(); + } else if(include instanceof DirSet) + { + final DirSet dirSet = (DirSet)include; + DirectoryScanner directoryScanner = dirSet.getDirectoryScanner(getProject()); + directoryDirs = directoryScanner.getIncludedDirectories(); + } else + { + // NOTE: this cannot occur as it is checked on setXXX() but + // just to be pedantic this is here + throw new BuildException("Invalid included construct."); + } + + // add the directoryDirs to the includedDirectories + // TODO: exclude any directory that is already in the list + for(int i=0; i<directoryDirs.length; i++) + { + includedDirectories.add(directoryDirs[i]); + } + } + + // if literalInclude is valid then add it to the list of included + // directories + if(isValid(literalInclude)) + includedDirectories.add(literalInclude); + + // add the included directories to the command + for(Iterator includes=includedDirectories.iterator(); includes.hasNext(); ) + { + String directory = (String)includes.next(); + gluegenCommandline.createArgument().setValue("-I" + directory); + } + + // finally, add the source file + gluegenCommandline.createArgument().setValue(sourceFile); + } + + /** + * <p>Execute {@link net.java.games.gluegen.GlueGen} 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); + } + } +} |