Move demangle impl to cpp

1 files changed, 33 insertions, 0 deletions

diff --git a/src/common/demangle.cpp b/src/common/demangle.cpp
new file mode 100644
index 000000000..17abdb85e
--- /dev/null
+++ b/src/common/demangle.cpp
@@ -0,0 +1,33 @@
+// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/demangle.h"
+
+namespace llvm {
+char* itaniumDemangle(const char* mangled_name, char* buf, size_t* n, int* status);
+}
+
+namespace Common {
+
+std::string DemangleSymbol(const std::string& mangled) {
+    auto is_itanium = [](const std::string& name) -> bool {
+        // A valid Itanium encoding requires 1-4 leading underscores, followed by 'Z'.
+        auto pos = name.find_first_not_of('_');
+        return pos > 0 && pos <= 4 && name[pos] == 'Z';
+    };
+
+    char* demangled = nullptr;
+    if (is_itanium(mangled)) {
+        demangled = llvm::itaniumDemangle(mangled.c_str(), nullptr, nullptr, nullptr);
+    }
+
+    if (!demangled) {
+        return mangled;
+    }
+
+    std::string ret = demangled;
+    std::free(demangled);
+    return ret;
+}
+
+} // namespace Common