Correctly check a file for exclusion.

The filename is relative to the project root (e.g
`tm/auto/test.*`\\.tmx`), and all the file separators are converted to
forward slashes to be consistent across all platforms.

Author: briacp

src/main/java/net/briac/omegat/plugin/omt/DirectoryFilter.java

@@ -8,21 +8,26 @@
 import java.util.logging.Level;
 import java.util.regex.Pattern;
 
+import org.apache.commons.io.FilenameUtils;
+
 public class DirectoryFilter implements DirectoryStream.Filter<Path> {
 
-    private List<Pattern> excludePatterns = new ArrayList<>();
+    private final List<Pattern> excludePatterns = new ArrayList<>();
+    private final Path projectRoot;
 
-    public DirectoryFilter(List<String> excludePatterns) {
+    public DirectoryFilter(Path projectRoot, List<String> excludePatterns) {
+        this.projectRoot = projectRoot;
         for (String e : excludePatterns) {
             this.excludePatterns.add(Pattern.compile(e));
         }
     }
 
     @Override
     public boolean accept(Path entry) throws IOException {
-        //Log.log(String.format("filter\tentry:[%s]", entry));
+        String matchEntry = FilenameUtils.normalizeNoEndSeparator(projectRoot.relativize(entry).toString(), true);
+        //org.omegat.util.Log.log(String.format("filter\tentry:[%s]", matchEntry));
         for (Pattern excludePattern : excludePatterns) {
-            if (excludePattern.matcher(entry.toString()).find()) {
+            if (excludePattern.matcher(matchEntry).find()) {
                 ManageOMTPackage.LOGGER.log(Level.FINE, String.format("Excluded\t%s", entry));
                 return false;
             }

src/main/java/net/briac/omegat/plugin/omt/ManageOMTPackage.java

@@ -555,7 +555,7 @@ public static void createOmt(final File omtZip, final ProjectProperties props) t
 
         List<String> listExcludes = Arrays.asList(pluginProps.getProperty(PROPERTY_EXCLUDE, DEFAULT_EXCLUDE).split(";"));
 
-        DirectoryStream.Filter<Path> filter = new DirectoryFilter(listExcludes);
+        DirectoryStream.Filter<Path> filter = new DirectoryFilter(path, listExcludes);
 
         BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(omtZip));
         Log.log(String.format("Zipping project [%s] to file [%s]", path, omtZip.getAbsolutePath()));