Index: rts/System/FileSystem/ArchiveScanner.cpp
===================================================================
--- rts/System/FileSystem/ArchiveScanner.cpp	(revision 4371)
+++ rts/System/FileSystem/ArchiveScanner.cpp	(working copy)
@@ -536,6 +536,27 @@
 	return aii->second.checksum;
 }
 
+std::string CArchiveScanner::GetArchivePath(const string& name)
+{
+	string lcname = name;
+
+	// Strip path-info if present
+	if (lcname.find_last_of('\\') != string::npos)
+		lcname = lcname.substr(lcname.find_last_of('\\') + 1);
+	if (lcname.find_last_of('/') != string::npos)
+		lcname = lcname.substr(lcname.find_last_of('/') + 1);
+
+	StringToLowerInPlace(lcname);
+
+	map<string, ArchiveInfo>::iterator aii = archiveInfo.find(lcname);
+	if (aii == archiveInfo.end()) {
+		logOutput.Print("GetArchivePath: Could not find archive \"%s\"", name.c_str());
+		return 0;
+	}
+
+	return aii->second.path;
+}
+
 /** Get checksum of all required archives depending on selected mod. */
 unsigned int CArchiveScanner::GetModChecksum(const string& root)
 {
Index: rts/System/FileSystem/ArchiveScanner.h
===================================================================
--- rts/System/FileSystem/ArchiveScanner.h	(revision 4371)
+++ rts/System/FileSystem/ArchiveScanner.h	(working copy)
@@ -49,6 +49,7 @@
 	vector<string> GetMaps();
 	vector<string> GetArchivesForMap(const string& mapName);
 	unsigned int GetArchiveChecksum(const string& name);
+	std::string GetArchivePath(const string& name);
 	unsigned int GetModChecksum(const string& root);
 	unsigned int GetMapChecksum(const string& mapName);
 	void CheckMod(const string& root, unsigned checksum); // these throw a content_error if checksum doesn't match
Index: tools/unitsync/unitsync.cpp
===================================================================
--- tools/unitsync/unitsync.cpp	(revision 4371)
+++ tools/unitsync/unitsync.cpp	(working copy)
@@ -280,6 +280,13 @@
 	return archiveScanner->GetArchiveChecksum(arname);
 }
 
+DLL_EXPORT const char* __stdcall GetArchivePath(const char* arname)
+{
+	ASSERT(archiveScanner && hpiHandler, "Call InitArchiveScanner before GetArchivePath.");
+	ASSERT(arname && *arname, "Don't pass a NULL pointer or an empty string to GetArchivePath.");
+	return archiveScanner->GetArchivePath(arname).c_str();
+}
+
 // Updated on every call to getmapcount
 static vector<string> mapNames;