public void run()

in fop-core/src/main/java/org/apache/fop/tools/anttasks/Fop.java [506:634]
105 lines of code
41 McCabe index (conditional complexity)

    public void run() throws FOPException {
        task.log("Using base URI: " + baseUri, Project.MSG_DEBUG);

        String outputFormat = normalizeOutputFormat(task.getFormat());
        String newExtension = determineExtension(outputFormat);

        // actioncount = # of fofiles actually processed through FOP
        int actioncount = 0;
        // skippedcount = # of fofiles which haven't changed (force = "false")
        int skippedcount = 0;

        // deal with single source file
        if (task.getFofile() != null) {
            if (task.getFofile().exists()) {
                File outf = task.getOutfile();
                if (outf == null) {
                    throw new BuildException("outfile is required when fofile is used");
                }
                if (task.getOutdir() != null) {
                    outf = new File(task.getOutdir(), outf.getName());
                }
                // Render if "force" flag is set OR
                // OR output file doesn't exist OR
                // output file is older than input file
                if (task.getForce() || !outf.exists()
                    || (task.getFofile().lastModified() > outf.lastModified())) {
                    render(task.getFofile(), outf, outputFormat);
                    actioncount++;
                } else if (outf.exists()
                        && (task.getFofile().lastModified() <= outf.lastModified())) {
                    skippedcount++;
                }
            }
        } else if (task.getXmlFile() != null && task.getXsltFile() != null) {
            if (task.getXmlFile().exists() && task.getXsltFile().exists()) {
                File outf = task.getOutfile();
                if (outf == null) {
                    throw new BuildException("outfile is required when fofile is used");
                }
                if (task.getOutdir() != null) {
                    outf = new File(task.getOutdir(), outf.getName());
                }
                // Render if "force" flag is set OR
                // OR output file doesn't exist OR
                // output file is older than input file
                if (task.getForce() || !outf.exists()
                        || (task.getXmlFile().lastModified() > outf.lastModified()
                        || task.getXsltFile().lastModified() > outf.lastModified())) {
                    render(task.getXmlFile(), task.getXsltFile(), outf, outputFormat);
                    actioncount++;
                } else if (outf.exists()
                        && (task.getXmlFile().lastModified() <= outf.lastModified()
                            || task.getXsltFile().lastModified() <= outf.lastModified())) {
                    skippedcount++;
                }
            }
        }

        GlobPatternMapper mapper = new GlobPatternMapper();

        String inputExtension = ".fo";
        File xsltFile = task.getXsltFile();
        if (xsltFile != null) {
            inputExtension = ".xml";
        }
        mapper.setFrom("*" + inputExtension);
        mapper.setTo("*" + newExtension);

        // deal with the filesets
        for (int i = 0; i < task.getFilesets().size(); i++) {
            FileSet fs = (FileSet) task.getFilesets().get(i);
            DirectoryScanner ds = fs.getDirectoryScanner(task.getProject());
            String[] files = ds.getIncludedFiles();

            for (String file : files) {
                File f = new File(fs.getDir(task.getProject()), file);

                File outf = null;
                if (task.getOutdir() != null && file.endsWith(inputExtension)) {
                    String[] sa = mapper.mapFileName(file);
                    outf = new File(task.getOutdir(), sa[0]);
                } else {
                    outf = replaceExtension(f, inputExtension, newExtension);
                    if (task.getOutdir() != null) {
                        outf = new File(task.getOutdir(), outf.getName());
                    }
                }
                File dir = outf.getParentFile();
                if (!dir.exists()) {
                    dir.mkdirs();
                }
                try {
                    if (task.getRelativebase()) {
                        this.baseUri = f.getParentFile().toURI();
                    }
                    if (this.baseUri == null) {
                        this.baseUri = fs.getDir(task.getProject()).toURI();
                    }

                } catch (Exception e) {
                    task.log("Error setting base URL", Project.MSG_DEBUG);
                }

                // Render if "force" flag is set OR
                // OR output file doesn't exist OR
                // output file is older than input file
                if (task.getForce() || !outf.exists()
                        || (f.lastModified() > outf.lastModified())) {
                    if (xsltFile != null) {
                        render(f, xsltFile, outf, outputFormat);
                    } else {
                        render(f, outf, outputFormat);
                    }
                    actioncount++;
                } else if (outf.exists() && (f.lastModified() <= outf.lastModified())) {
                    skippedcount++;
                }
            }
        }

        if (actioncount + skippedcount == 0) {
            task.log("No files processed. No files were selected by the filesets "
                + "and no fofile was set." , Project.MSG_WARN);
        } else if (skippedcount > 0) {
            task.log(skippedcount + " xslfo file(s) skipped (no change found"
                + " since last generation; set force=\"true\" to override)."
                , Project.MSG_INFO);
        }
    }