Merge remote repo native into ext/native/.

ext/native/file/path.cpp

@@ -0,0 +1,62 @@
+#include "file/path.h"
+
+// Normalize slashes.
+void PathBrowser::SetPath(const std::string &path) {
+	if (path[0] == '!') {
+		path_ = path;
+		return;
+	}
+	path_ = path;
+	for (size_t i = 0; i < path_.size(); i++) {
+		if (path_[i] == '\\') path_[i] = '/';
+	}
+	if (!path_.size() || (path_[path_.size() - 1] != '/'))
+		path_ += "/";
+}
+
+void PathBrowser::GetListing(std::vector<FileInfo> &fileInfo, const char *filter) {
+#ifdef _WIN32
+	if (path_ == "/") {
+		// Special path that means root of file system.
+		std::vector<std::string> drives = getWindowsDrives();
+		for (auto drive = drives.begin(); drive != drives.end(); ++drive) {
+			if (*drive == "A:/" || *drive == "B:/")
+				continue;
+			FileInfo fake;
+			fake.fullName = *drive;
+			fake.name = *drive;
+			fake.isDirectory = true;
+			fake.exists = true;
+			fake.size = 0;
+			fake.isWritable = false;
+			fileInfo.push_back(fake);
+		}
+	}
+#endif
+
+	getFilesInDir(path_.c_str(), &fileInfo, filter);
+}
+
+// TODO: Support paths like "../../hello"
+void PathBrowser::Navigate(const std::string &path) {
+	if (path == ".")
+		return;
+	if (path == "..") {
+		// Upwards.
+		// Check for windows drives.
+		if (path_.size() == 3 && path_[1] == ':') {
+			path_ = "/";
+		} else {
+			size_t slash = path_.rfind('/', path_.size() - 2);
+			if (slash != std::string::npos)
+				path_ = path_.substr(0, slash + 1);
+		}
+	} else {
+		if (path[1] == ':' && path_ == "/")
+			path_ = path;
+		else
+			path_ = path_ + path;
+		if (path_[path_.size() - 1] != '/')
+			path_ += "/";
+	}
+}