private void parseLexFile(File lexFile) throws MojoFailureException, MojoExecutionException {
assert lexFile.isAbsolute() : lexFile;
getLog().debug("Generating Java code from " + lexFile.getName());
ClassInfo classInfo;
try {
classInfo = LexSimpleAnalyzer.guessPackageAndClass(lexFile);
} catch (FileNotFoundException e) {
throw new MojoFailureException(e.getMessage(), e);
} catch (IOException e) {
classInfo = new ClassInfo();
classInfo.className = LexSimpleAnalyzer.DEFAULT_NAME;
classInfo.packageName = null; // NOPMD
}
checkParameters(lexFile);
/* set destination directory */
File generatedFile = new File(outputDirectory, classInfo.getOutputFilename());
/* Generate only if needs to */
if (lexFile.lastModified() - generatedFile.lastModified() <= this.staleMillis) {
getLog().info(" " + generatedFile.getName() + " is up to date.");
getLog().debug("StaleMillis = " + staleMillis + "ms");
return;
}
/*
* set options. Very strange that JFlex expects this in a static way.
*/
Options.setDefaults();
Options.setDir(generatedFile.getParentFile());
Options.dump = dump;
Options.verbose = verbose;
Options.unused_warning = unusedWarning;
Options.dot = dot;
Options.legacy_dot = legacyDot;
Options.emitInputStreamCtor = inputStreamCtor;
if (skeleton != null) {
Options.setSkeleton(skeleton);
}
Options.jlex = jlex;
Options.no_minimize = !minimize; // NOPMD
Options.no_backup = !backup; // NOPMD
if ("pack".equals(generationMethod)) {
/* no-op - there is only one generation method */
} else {
throw new MojoExecutionException("Illegal generation method: " + generationMethod);
}
try {
Main.generate(lexFile);
getLog().info(" generated " + generatedFile);
} catch (Exception e) {
throw new MojoExecutionException(e.getMessage(), e);
}
}
public static void generarLexer(String path) {
File file = new File(path);
jflex.Main.generate(file);
}
