I have implemented a task(attached) to provide basic support for etags.
If you feel that this maybe useful, feel free to use/distribute it.
Regards, Damian ONeill
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Damian O'Neill Software Engineer AePONA Ltd, Interpoint Building, 20-24 York Street, Belfast, BT15 1AQ
+44 (0) 2890 275246
http://www.aepona.com
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package org.apache.tools.ant.taskdefs.optional; import org.apache.tools.ant.Task; import org.apache.tools.ant.BuildException; import org.apache.tools.ant.Project; import org.apache.tools.ant.DirectoryScanner; import org.apache.tools.ant.types.FileSet; import java.io.File; import java.io.IOException; import java.util.Vector; /** * Used to create a tag table file, in a format understood by emacs -- corresponds to the Unix etags command. * * <p>This task read the file(s) specified, and writes a tag table (defaults: `TAGS') in the current working directory.</p> * * * @author <a href="mailto:[EMAIL PROTECTED]">Damian ONeill</a> */ public class ETags extends Task { private File file; private Vector filesets = new Vector(); private int noOfFiles = 0; private boolean failOnError = false; /** * Sets a single source file to build a TAGS file. If the file does not exist * the task will be ignored. * @param file The absolute path to the file to be used to generate the TAGS file */ public void setFile(File file) { this.file = file; } /** * Sets fail on error to true or false. * If this is not set, fail on error will be false. * @param fail flag determining whether ant should stop on error or continue */ public void setFailonerror(boolean fail) { failOnError = fail; } /** * Adds a set of files (nested fileset attribute). * @param set group of files */ public void addFileset(FileSet set) { filesets.addElement(set); } /** * Execute the etags operation. * @throws BuildException thrown if there is a problem running the unix etags command */ public void execute() throws BuildException { if (file == null && filesets.size() == 0) { throw new BuildException("Specify at least one source - a file or a fileset."); } if (file != null && file.exists() && file.isDirectory()) { throw new BuildException("Use a fileset to build TAGS file from directories."); } etags(); log("Appended " + noOfFiles + ((noOfFiles != 1)?" files to ":" file to ") + System.getProperty("user.dir") + "/TAGS"); } /** * Does the actual work. * @throws BuildException thrown if there is a problem running the unix etags command */ protected void etags() throws BuildException { if (file != null) { if (!file.exists()) { throw new BuildException("Could not build TAGS file from " + file + ", this file does not exist"); } } if (file != null) { etags(file); } // deal with the filesets for (int i=0; i < filesets.size(); i++) { FileSet fs = (FileSet) filesets.elementAt(i); DirectoryScanner ds = fs.getDirectoryScanner(project); File fromDir = fs.getDir(project); String[] srcFiles = ds.getIncludedFiles(); String[] srcDirs = ds.getIncludedDirectories(); for(int j=0; j < srcFiles.length ; j++) { etags(new File(fromDir, srcFiles[j])); } for(int j=0; j < srcDirs.length ; j++) { etags(new File(fromDir, srcDirs[j])); } } } /** Used to append a single file to the TAGS file * @param file The absolute path to the file to be used to generate the TAGS file * @throws BuildException thrown if there is a problem running the unix etags command */ protected void etags(File file) throws BuildException { String cmd = "etags -a " + file.getAbsolutePath(); try { // start command running Process proc = Runtime.getRuntime().exec(cmd); // wait for command to terminate proc.waitFor(); // check its exit value if (proc.exitValue() != 0) { if (failOnError) { throw new BuildException("etags process did not complete correctly for file " + file.getAbsolutePath()); } else { log("Result: " + proc.exitValue(), Project.MSG_ERR); } } // update the no of files counter noOfFiles++; } catch (InterruptedException ex) { throw new BuildException("etags process was interrupted, for file " + file.getAbsolutePath()); } catch (IOException ex) { throw new BuildException("etags process encountered a problem with io for file " + file.getAbsolutePath()); } } }
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