Don't assume a max length in fs::ShortName

TypesettingTools · Dec 3, 2023 · d8910f5 · d8910f5
1 parent 9076a8b
commit d8910f5
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/libaegisub/windows/fs.cpp b/libaegisub/windows/fs.cpp
@@ -32,7 +32,11 @@ using agi::charset::ConvertLocal;
 
 namespace agi { namespace fs {
 std::string ShortName(path const& p) {
-	std::wstring out(MAX_PATH + 1, 0);
+	DWORD length = GetShortPathName(p.c_str(), NULL, 0);
+	if (!length)
+		return p.string();
+
+	std::wstring out(length, 0);
 	DWORD len = GetShortPathName(p.c_str(), &out[0], out.size());
 	if (!len)
 		return p.string();