1 files changed, 50 insertions, 0 deletions
diff --git a/llvm/lib/ObjCopy/CommonConfig.cpp b/llvm/lib/ObjCopy/CommonConfig.cpp
new file mode 100644
index 000000000000..e85715d0c44c
--- /dev/null
+++ b/llvm/lib/ObjCopy/CommonConfig.cpp
@@ -0,0 +1,50 @@
+//===- CommonConfig.cpp ---------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ObjCopy/CommonConfig.h"
+
+namespace llvm {
+namespace objcopy {
+
+Expected<NameOrPattern>
+NameOrPattern::create(StringRef Pattern, MatchStyle MS,
+                      function_ref<Error(Error)> ErrorCallback) {
+  switch (MS) {
+  case MatchStyle::Literal:
+    return NameOrPattern(Pattern);
+  case MatchStyle::Wildcard: {
+    SmallVector<char, 32> Data;
+    bool IsPositiveMatch = true;
+    if (Pattern[0] == '!') {
+      IsPositiveMatch = false;
+      Pattern = Pattern.drop_front();
+    }
+    Expected<GlobPattern> GlobOrErr = GlobPattern::create(Pattern);
+
+    // If we couldn't create it as a glob, report the error, but try again
+    // with a literal if the error reporting is non-fatal.
+    if (!GlobOrErr) {
+      if (Error E = ErrorCallback(GlobOrErr.takeError()))
+        return std::move(E);
+      return create(Pattern, MatchStyle::Literal, ErrorCallback);
+    }
+
+    return NameOrPattern(std::make_shared<GlobPattern>(*GlobOrErr),
+                         IsPositiveMatch);
+  }
+  case MatchStyle::Regex: {
+    SmallVector<char, 32> Data;
+    return NameOrPattern(std::make_shared<Regex>(
+        ("^" + Pattern.ltrim('^').rtrim('$') + "$").toStringRef(Data)));
+  }
+  }
+  llvm_unreachable("Unhandled llvm.objcopy.MatchStyle enum");
+}
+
+} // end namespace objcopy
+} // end namespace llvm