std::experimental fix for android

data/File.h

@@ -0,0 +1,115 @@
+#ifndef FS_FILE_H
+#define FS_FILE_H
+
+#include <string>
+#include <vector>
+
+
+
+
+#if __cplusplus > 201103L
+
+	// use new cross-platform std::experimental stuff
+	#include <experimental/filesystem>
+
+namespace FS {
+
+	class File {
+
+		std::experimental::filesystem::path path;
+
+	public:
+
+		File(const std::string& fileOrFolder) : path(fileOrFolder) {
+
+		}
+
+		bool exists() const {
+			return std::experimental::filesystem::exists(path);
+		}
+
+		std::vector<File> listFiles() const {
+			std::vector<File> res;
+			for (std::experimental::filesystem::directory_entry entry : std::experimental::filesystem::directory_iterator(path)) {
+				const std::string abs = entry.path().string();
+				res.push_back(File(abs));
+			}
+			return res;
+		}
+
+		std::string getPath() const {
+			return path.string();
+		}
+
+		std::string getFilename() const {
+			return path.filename().string();
+		}
+
+	};
+
+}
+
+#else
+
+	// use linux-only fallback
+
+	#include <dirent.h>
+	#include <sys/stat.h>
+
+namespace FS {
+
+	class File {
+
+		std::string path;
+
+	public:
+
+		File(const std::string& fileOrFolder) : path(fileOrFolder) {
+
+		}
+
+		bool exists() const {
+			struct stat st;
+			int res = stat(path.c_str(), &st );
+			return res == 0;
+		}
+
+		/** list of all files/folders within the current folder */
+		std::vector<File> listFiles() const {
+
+			std::vector<File> res;
+
+			DIR* dir;
+
+			dir = opendir(path.c_str());
+			if (!dir) {throw Exception("failed to open folder " + path);}
+
+			// fetch all entries
+			while(true) {
+				dirent* entry = readdir(dir);
+				if (!entry) {break;}
+				const std::string abs = path + "/" + entry->d_name;
+				res.push_back(File(abs));
+			}
+
+			return res;
+
+		}
+
+		const std::string& getPath() const {
+			return path;
+		}
+
+		const std::string getFilename() const {
+			const size_t lastSlash = path.find_last_of("/");
+			if (std::string::npos == lastSlash) {return path;}
+			std::string name = path.substr(lastSlash+1);
+			return name;
+		}
+
+	};
+
+}
+#endif
+
+#endif // FS_FILE_H