PathBrowser: Show simplified version of paths under the memstick dir.

Common/File/PathBrowser.cpp

@@ -2,6 +2,8 @@
 #include <cstring>
 #include <set>
 
+#include "ppsspp_config.h"
+
 #include "Common/Net/HTTPClient.h"
 #include "Common/Net/URL.h"
 
@@ -11,6 +13,8 @@
 #include "Common/Log.h"
 #include "Common/Thread/ThreadUtil.h"
 
+#include "Core/System.h"
+
 bool LoadRemoteFileList(const std::string &url, bool *cancel, std::vector<FileInfo> &files) {
 	http::Client http;
 	Buffer result;
@@ -201,6 +205,28 @@ bool PathBrowser::IsListingReady() {
 	return ready_;
 }
 
+std::string PathBrowser::GetFriendlyPath() const {
+	std::string str = GetPath();
+	// Show relative to memstick root if there.
+	std::string root = GetSysDirectory(DIRECTORY_MEMSTICK_ROOT);
+	for (size_t i = 0; i < root.size(); i++) {
+		if (root[i] == '\\')
+			root[i] = '/';
+	}
+
+	if (startsWith(str, root)) {
+		return std::string("ms:/") + str.substr(root.size());
+	}
+
+#if PPSSPP_PLATFORM(LINUX) || PPSSPP_PLATFORM(MAC)
+	char *home = getenv("HOME");
+	if (home != nullptr && !strncmp(str.c_str(), home, strlen(home))) {
+		str = std::string("~") + str.substr(strlen(home));
+	}
+#endif
+	return str;
+}
+
 bool PathBrowser::GetListing(std::vector<FileInfo> &fileInfo, const char *filter, bool *cancel) {
 	std::unique_lock<std::mutex> guard(pendingLock_);
 	while (!IsListingReady() && (!cancel || !*cancel)) {

Common/File/PathBrowser.h

@@ -32,19 +32,7 @@ public:
 		else
 			return "";
 	}
-	std::string GetFriendlyPath() const {
-		std::string str = GetPath();
-#if defined(__ANDROID__)
-		// Do nothing
-#elif defined(__linux)
-		char *home = getenv("HOME");
-		if (home != nullptr && !strncmp(str.c_str(), home, strlen(home))) {
-			str = str.substr(strlen(home));
-			str.insert(0, 1, '~');
-		}
-#endif
-		return str;
-	}
+	std::string GetFriendlyPath() const;
 
 private:
 	void HandlePath();