Added a directory class to the core. It's directly using tinydir for now.

core/os/directory.cpp

@@ -0,0 +1,121 @@
+#include "directory.h"
+
+Error Directory::open(const String &path, bool skip_specials) {
+	if (_open) {
+		return ERR_CANT_ACQUIRE_RESOURCE;
+	}
+
+	_skip_specials = skip_specials;
+
+	if (tinydir_open(&_dir, path.c_str()) == -1) {
+		return FAILED;
+	}
+
+	_open = true;
+
+	return OK;
+}
+
+void Directory::close() {
+	if (!_open) {
+		return;
+	}
+
+	tinydir_close(&_dir);
+
+	_open = false;
+}
+
+bool Directory::has_next() {
+	return _dir.has_next;
+}
+void Directory::next() {
+	tinydir_next(&_dir);
+
+	_read_file_result = tinydir_readfile(&_dir, &_file);
+
+	if (_skip_specials && current_is_ok()) {
+		if ((_file.name[0] == '.' && _file.name[1] == '\0') || (_file.name[0] == '.' && _file.name[1] == '.' && _file.name[1] == '\0')) {
+			next();
+		}
+	}
+}
+
+bool Directory::current_is_ok() {
+	return _read_file_result == 01;
+}
+String Directory::current_get_name() {
+	return _file.name;
+}
+String Directory::current_get_path() {
+	return _file.path;
+}
+String Directory::current_get_extension() {
+	return _file.extension;
+}
+char *Directory::current_get_name_cstr() {
+	return _file.name;
+}
+char *Directory::current_get_path_cstr() {
+	return _file.path;
+}
+char *Directory::current_get_extension_cstr() {
+	return _file.extension;
+}
+bool Directory::current_is_file() {
+	return !_file.is_dir;
+}
+bool Directory::current_is_directory() {
+	return _file.is_dir;
+}
+
+String Directory::read_file(const String &path) {
+	FILE *f = fopen(path.c_str(), "r");
+
+	String fd;
+
+	ERR_FAIL_COND_V_MSG(!f, fd, "Error opening file! " + path);
+
+	fseek(f, 0, SEEK_END);
+	long fsize = ftell(f);
+	fseek(f, 0, SEEK_SET); /* same as rewind(f); */
+
+	fread(fd.dataw(), 1, fsize, f);
+	fclose(f);
+
+	return fd;
+}
+void Directory::read_file_into(const String &path, String *str) {
+	ERR_FAIL_COND(!str);
+
+	FILE *f = fopen(path.c_str(), "r");
+
+	ERR_FAIL_COND_MSG(!f, "Error opening file! " + path);
+
+	fseek(f, 0, SEEK_END);
+	long fsize = ftell(f);
+	fseek(f, 0, SEEK_SET); /* same as rewind(f); */
+
+	str->resize(fsize);
+
+	fread(str->dataw(), 1, fsize, f);
+	fclose(f);
+}
+
+bool Directory::is_open() {
+	return _open;
+}
+bool Directory::is_closed() {
+	return !_open;
+}
+
+Directory::Directory() {
+	_skip_specials = false;
+	_read_file_result = 0;
+	_open = false;
+}
+Directory::~Directory() {
+	if (is_open()) {
+		close();
+	}
+}

core/os/directory.h

@@ -0,0 +1,47 @@
+#ifndef DIRECTORY_H
+#define DIRECTORY_H
+
+#include "core/string.h"
+#include "core/error_list.h"
+#include <tinydir/tinydir.h>
+
+#include "core/reference.h"
+
+class Directory : public Reference {
+	RCPP_OBJECT(Directory, Reference);
+public:
+	Error open(const String &path, bool skip_specials = false);
+	void close();
+
+	bool has_next();
+	void next();
+
+	bool current_is_ok();
+	String current_get_name();
+	String current_get_path();
+	String current_get_extension();
+	char *current_get_name_cstr();
+	char *current_get_path_cstr();
+	char *current_get_extension_cstr();
+	bool current_is_file();
+	bool current_is_directory();
+
+	String read_file(const String &path);
+	void read_file_into(const String &path, String *str);
+
+	bool is_open();
+	bool is_closed();
+
+	Directory();
+	virtual ~Directory();
+
+private:
+	bool _skip_specials;
+	int _read_file_result;
+	tinydir_dir _dir;
+	tinydir_file _file;
+
+	bool _open;
+};
+
+#endif