add different match types to search

Sources/dpk-cli/RegexMatcher.swift

@@ -0,0 +1,29 @@
+/*
+ * darwin-apk © 2024 Gay Pizza Specifications
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import Foundation
+import ArgumentParser
+
+struct RegexMatcher: PatternMatcher {
+  private let _patterns: [Regex<_StringProcessing.AnyRegexOutput>]
+
+  init(patterns: [String], ignoreCase: Bool) throws(ExitCode) {
+    do {
+      self._patterns = try patterns.map(Regex.init)
+    } catch {
+      print("Bad pattern \(error.localizedDescription)")
+      throw .validationFailure
+    }
+  }
+
+  func match(_ field: String) -> Bool {
+    for pattern in self._patterns {
+      if (try? pattern.firstMatch(in: field)) != nil {
+        return true
+      }
+    }
+    return false
+  }
+}