// This file is a part of the Framsticks GDK.
// Copyright (C) 1999-2014  Maciej Komosinski and Szymon Ulatowski.  See LICENSE.txt for details.
// Refer to http://www.framsticks.com/ for further information.

#ifndef _STRINGFILE_H_
#define _STRINGFILE_H_

#include "virtfile.h"
#include <frams/util/sstring.h>

class StringFILE : public VirtFILE
{
protected:
	SString& str;
	long pos;
public:
	StringFILE(SString& s) :str(s), pos(0) {}
	size_t Vread(void *ptr, size_t size, size_t nmemb);
	size_t Vwrite(const void *ptr, size_t size, size_t nmemb) { str.append((const char*)ptr, (int)(size*nmemb)); return size*nmemb; }
	int Veof() { return pos >= str.len(); }
	int Vputc(int c) { str += (char)c; return c; }
	int Vputs(const char *s) { str.append(s, (int)strlen(s)); return 0; }
	int Vgetc();
	char *Vgets(char *s, int size);
	int Vseek(long offset, int whence);
	long Vtell() { return pos; }
	int Vflush() { return 0; }
};

/** this version owns the string object */
class StringFILE2 : public StringFILE
{
	SString string;
public:
	StringFILE2(const SString& s) :StringFILE(string), string(s) {}
	StringFILE2() :StringFILE(string) {}
	const SString& getString() { return string; }
};

class StringFileSystem : public VirtFileSystem
{
public:
	VirtFileSystem *chain;
	StringFileSystem(VirtFileSystem *_chain = NULL) :chain(_chain) {}
	VirtFILE *Vfopen(const char* path, const char*mode);
	int Vfexists(const char* path);
	VirtDIR *Vopendir(const char* path);
	static const char PREFIX[];
	static bool isStringPath(const char* path);
};

#endif