private void copySiteDir()

in src/main/java/org/apache/maven/plugins/pdf/PdfMojo.java [519:563]
40 lines of code
13 McCabe index (conditional complexity)

    private void copySiteDir(final File from, final File to) throws IOException {
        if (from == null || !from.exists()) {
            return;
        }

        // copy generated-site
        for (final Locale locale : getAvailableLocales()) {
            String excludes = getDefaultExcludesWithLocales(getAvailableLocales(), getDefaultLocale());
            List<String> siteFiles = siteDirectory.exists()
                    ? FileUtils.getFileNames(siteDirectory, "**/*", excludes, false)
                    : new ArrayList<>();
            File siteDirectoryLocale = new File(siteDirectory, locale.getLanguage());
            if (!locale.getLanguage().equals(getDefaultLocale().getLanguage()) && siteDirectoryLocale.exists()) {
                siteFiles = FileUtils.getFileNames(siteDirectoryLocale, "**/*", excludes, false);
            }

            List<String> generatedSiteFiles = FileUtils.getFileNames(from, "**/*", excludes, false);
            File fromLocale = new File(from, locale.getLanguage());
            if (!locale.getLanguage().equals(getDefaultLocale().getLanguage()) && fromLocale.exists()) {
                generatedSiteFiles = FileUtils.getFileNames(fromLocale, "**/*", excludes, false);
            }

            for (final String generatedSiteFile : generatedSiteFiles) {
                if (siteFiles.contains(generatedSiteFile)) {
                    getLog().warn("Generated-site already contains a file in site: " + generatedSiteFile
                            + ". Ignoring copying it!");
                    continue;
                }

                if (!locale.getLanguage().equals(getDefaultLocale().getLanguage())) {
                    if (fromLocale.exists()) {
                        File in = new File(fromLocale, generatedSiteFile);
                        File out = new File(new File(to, locale.getLanguage()), generatedSiteFile);
                        out.getParentFile().mkdirs();
                        FileUtils.copyFile(in, out);
                    }
                } else {
                    File in = new File(from, generatedSiteFile);
                    File out = new File(to, generatedSiteFile);
                    out.getParentFile().mkdirs();
                    FileUtils.copyFile(in, out);
                }
            }
        }
    }