Добавлена возможность делать паттерны регулярками

src/main/java/ru/serega6531/packmate/model/Pattern.java

@@ -30,6 +30,8 @@ public class Pattern {
 
     private String color;  // для вставки в css
 
+    private boolean isRegex;
+
     @ManyToMany(mappedBy = "foundPatterns", cascade = CascadeType.ALL)
     @JsonIgnore
     private List<Stream> matchedStreams;

src/main/java/ru/serega6531/packmate/service/PatternService.java

@@ -7,8 +7,9 @@ import org.springframework.stereotype.Service;
 import ru.serega6531.packmate.model.Pattern;
 import ru.serega6531.packmate.repository.PatternRepository;
 
-import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 import java.util.stream.Collectors;
 
 @Service
@@ -17,6 +18,8 @@ public class PatternService {
 
     private final PatternRepository repository;
 
+    private Map<String, java.util.regex.Pattern> compiledPatterns = new HashMap<>();
+
     @Autowired
     public PatternService(PatternRepository repository) {
         this.repository = repository;
@@ -30,10 +33,19 @@ public class PatternService {
         String content = new String(bytes);
 
         return findAll().stream()
-                .filter(pattern -> StringUtils.containsIgnoreCase(content, pattern.getValue()))
+                .filter(pattern -> matches(pattern, content))
                 .collect(Collectors.toList());
     }
 
+    private boolean matches(Pattern pattern, String content) {
+        if(pattern.isRegex()) {
+            final java.util.regex.Pattern regex = compilePattern(pattern);
+            return regex.matcher(content).find();
+        } else {
+            return StringUtils.containsIgnoreCase(content, pattern.getValue());
+        }
+    }
+
     public void deleteById(int id) {
         repository.deleteById(id);
     }
@@ -43,4 +55,8 @@ public class PatternService {
         return repository.save(pattern);
     }
 
+    public java.util.regex.Pattern compilePattern(Pattern pattern) {
+        return compiledPatterns.computeIfAbsent(pattern.getValue(), java.util.regex.Pattern::compile);
+    }
+
 }