support regex file patterns

Resolves #191

CHANGELOG.md

@@ -3,6 +3,9 @@
 # easy-i18n Changelog
 
 ## [Unreleased]
+### Added
+- Regex support for translation file patterns
+
 ### Fixed
 - Parsing for <kbd>.properties</kbd> files
 

src/main/java/de/marhali/easyi18n/io/folder/FolderStrategy.java

@@ -7,8 +7,8 @@ import de.marhali.easyi18n.io.parser.ParserStrategyType;
 import de.marhali.easyi18n.model.TranslationData;
 import de.marhali.easyi18n.model.TranslationFile;
 import de.marhali.easyi18n.settings.ProjectSettings;
+import de.marhali.easyi18n.util.WildcardRegexMatcher;
 
-import org.apache.commons.io.FilenameUtils;
 import org.jetbrains.annotations.NotNull;
 
 import java.io.File;
@@ -51,7 +51,8 @@ public abstract class FolderStrategy {
      * @return true if file matches and should be processed
      */
     protected boolean isFileRelevant(@NotNull VirtualFile file) {
-        return !file.isDirectory() && FilenameUtils.wildcardMatch(file.getName(), this.settings.getFilePattern());
+        return !file.isDirectory()
+                && WildcardRegexMatcher.matchWildcardRegex(file.getName(), settings.getFilePattern());
     }
 
     /**

src/main/java/de/marhali/easyi18n/util/WildcardRegexMatcher.java

@@ -0,0 +1,23 @@
+package de.marhali.easyi18n.util;
+
+import org.apache.commons.io.FilenameUtils;
+
+/**
+ * Utilities for wildcard / regex matching.
+ * @author marhali
+ */
+public class WildcardRegexMatcher {
+    public static boolean matchWildcardRegex(String string, String pattern) {
+        boolean wildcardMatch = FilenameUtils.wildcardMatchOnSystem(string, pattern);
+
+        if(wildcardMatch) {
+            return true;
+        }
+
+        try {
+            return string.matches(pattern);
+        } catch (Exception e) {
+            return false;
+        }
+    }
+}

src/main/resources/messages.properties

@@ -31,7 +31,7 @@ settings.resource.folder.items=Single Directory;Modularized: Locale / Namespace;
 settings.resource.folder.tooltip=What is the folder structure of your translation files?
 settings.resource.parser.items=JSON;JSON5;YAML;YML;Properties;ARB
 settings.resource.parser.tooltip=Which file parser should be used to process your translation files?
-settings.resource.file-pattern.tooltip=Defines a wildcard matcher to filter relevant translation files. For example *.json, *.??? or *.*.
+settings.resource.file-pattern.tooltip=Defines a wildcard matcher or regex pattern to filter relevant translation files. For example *.json, *.??? or *.*.
 settings.resource.nesting.title=Consider subdirectories for modularized translation files
 settings.resource.nesting.tooltip=Validates directories within a module and passes them as a submodule.
 settings.resource.sorting.title=Sort translation keys alphabetically

src/test/java/de/marhali/easyi18n/WildcardRegexMatcherTest.java

@@ -0,0 +1,34 @@
+package de.marhali.easyi18n;
+
+import de.marhali.easyi18n.util.WildcardRegexMatcher;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * Unit tests for {@link WildcardRegexMatcher}.
+ * @author marhali
+ */
+public class WildcardRegexMatcherTest extends WildcardRegexMatcher {
+    @Test
+    public void testWildcard() {
+        Assert.assertTrue(matchWildcardRegex("en.json", "*.json"));
+        Assert.assertTrue(matchWildcardRegex("de.json", "*.json"));
+        Assert.assertFalse(matchWildcardRegex("index.html", "*.json"));
+
+        Assert.assertTrue(matchWildcardRegex("en.json", "*.*"));
+        Assert.assertFalse(matchWildcardRegex("file", "*.*"));
+
+        Assert.assertTrue(matchWildcardRegex("en.txt", "*.???"));
+        Assert.assertFalse(matchWildcardRegex("en.json", "*.???"));
+    }
+
+    @Test
+    public void testRegex() {
+        Assert.assertTrue(matchWildcardRegex("en.json", "^(en|de)\\.json"));
+        Assert.assertFalse(matchWildcardRegex("gb.json", "^(en|de)\\.json"));
+
+        Assert.assertTrue(matchWildcardRegex("en.jpg", "^.*\\.(jpg|JPG|gif|GIF)$"));
+        Assert.assertFalse(matchWildcardRegex("en.json", "^.*\\.(jpg|JPG|gif|GIF)$"));
+    }
+}