mirror of
https://github.com/libretro/scummvm.git
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139 lines
3.6 KiB
C++
139 lines
3.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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/*
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* This code is based on original Soltys source code
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* Copyright (c) 1994-1995 Janus B. Wisniewski and L.K. Avalon
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*/
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#ifndef __CGE_GENERAL__
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#define __CGE_GENERAL__
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#include "common/system.h"
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#include "common/file.h"
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#include "common/random.h"
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#include "common/textconsole.h"
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#include "common/str.h"
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#include "cge/jbw.h"
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namespace CGE {
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#define kCryptSeed 0xA5
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enum IOMode { kModeRead, kModeWrite, kModeUpdate };
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struct Dac {
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uint8 _r;
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uint8 _g;
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uint8 _b;
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};
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typedef uint16 CRYPT(void *buf, uint16 siz, uint16 seed);
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template <class T>
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void swap(T &A, T &B) {
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T a = A;
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A = B;
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B = a;
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}
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template <class T>
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T max(T A, T B) {
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return (A > B) ? A : B;
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}
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template <class T>
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T min(T A, T B) {
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return (A < B) ? A : B;
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}
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class XFile {
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public:
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IOMode _mode;
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uint16 _error;
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XFile() : _mode(kModeRead), _error(0) { }
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XFile(IOMode mode) : _mode(mode), _error(0) { }
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virtual ~XFile() { }
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virtual uint16 read(void *buf, uint16 len) = 0;
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virtual uint16 write(void *buf, uint16 len) = 0;
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virtual long mark() = 0;
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virtual long size() = 0;
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virtual long seek(long pos) = 0;
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};
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template <class T>
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inline uint16 XRead(XFile *xf, T *t) {
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return xf->read((uint8 *) t, sizeof(*t));
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}
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class IoHand : public XFile {
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protected:
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Common::File *_file;
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uint16 _seed;
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CRYPT *_crypt;
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public:
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IoHand(const char *name, IOMode mode = kModeRead, CRYPT crypt = NULL);
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IoHand(IOMode mode = kModeRead, CRYPT *crpt = NULL);
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virtual ~IoHand();
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static bool exist(const char *name);
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uint16 read(void *buf, uint16 len);
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uint16 write(void *buf, uint16 len);
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long mark();
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long size();
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long seek(long pos);
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};
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CRYPT XCrypt;
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CRYPT RCrypt;
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uint16 atow(const char *a);
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uint16 xtow(const char *x);
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char *wtom(uint16 val, char *str, int radix, int len);
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char *dwtom(uint32 val, char *str, int radix, int len);
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int takeEnum(const char **tab, const char *txt);
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uint16 chkSum(void *m, uint16 n);
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long timer();
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char *mergeExt(char *buf, const char *nam, const char *ext);
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char *forceExt(char *buf, const char *nam, const char *ext);
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int driveCD(unsigned drv);
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// MISSING FUNCTIONS
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void _fqsort(void *base, uint16 nelem, uint16 width, int (*fcmp)(const void *, const void *));
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const char *progName(const char *ext = NULL);
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char *mergeExt(char *buf, const char *nam, const char *ext);
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char *forceExt(char *buf, const char *nam, const char *ext);
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unsigned fastRand();
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unsigned fastRand(unsigned s);
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uint16 rCrypt(void *buf, uint16 siz, uint16 seed);
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uint16 atow(const char *a);
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uint16 xtow(const char *x);
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char *wtom(uint16 val, char *str, int radix, int len);
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char *dwtom(uint32 val, char * str, int radix, int len);
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int takeEnum(const char **tab, const char *txt);
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long timer();
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int new_random(int range);
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} // End of namespace CGE
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#endif
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