scummvm/engines/avalanche/filing.cpp

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

/*
 * This code is based on the original source code of Lord Avalot d'Argent version 1.3.
 * Copyright (c) 1994-1995 Mike, Mark and Thomas Thurman.
 */

/*
  ÛßÜ ÛßÜ ÜßßÜ  ßÛß Ûßß  Üß ßÛß      ÜßÛßÜ  ßÛß ÛÜ  Û ÜÛßß  ßÛß ÛßÜ Ûßß Û
  Ûß  ÛÛ  Û  Û Ü Û  Ûßß ßÜ   Û      Û  Û  Û  Û  Û ÛÜÛ  ßßßÜ  Û  ÛÛ  Ûßß Û
  ß   ß ß  ßß   ßß  ßßß   ß  ß      ß  ß  ß ßßß ß  ßß  ßßß   ß  ß ß ßßß ßßß

                 FILING           The saving and loading handler. */


/*$R+*/

/*interface*/

/*#include "Gyro.h"*/

namespace Avalanche {

const array<1, 12, varying_string<6> > months = {
	{
		"Jan*", "Feb*", "March", "April", "May", "June", "July", "August",
		"Sept&", "Oct&", "Nov&", "Dec&"
	}
};
const string ednaid = string("TT") + '\261' + '\36' + '\1' + '\113' + '\261' + '\231' + '\261';
const array<1, 6, varying_string<7> > systems =
{{"DOS", "Windows", "OS/2", "Mac", "Amiga", "ST"}};

struct edhead { /* Edna header */
	/* This header starts at byte offset 177 in the .ASG file. */
	array<1, 9, char> id;   /* signature */
	word revision; /* EDNA revision, here 2 (1=dna256) */
	varying_string<50> game; /* Long name, eg Lord Avalot D'Argent */
	varying_string<15> shortname; /* Short name, eg Avalot */
	word number; /* Game's code number, here 2 */
	word ver; /* Version number as integer (eg 1.00 = 100) */
	varying_string<5> verstr; /* Vernum as string (eg 1.00 = "1.00" */
	varying_string<12> filename; /* Filename, eg AVALOT.EXE */
	byte os; /* Saving OS (here 1=DOS). See below for others.*/

	/* Info on this particular game */

	varying_string<8> fn; /* Filename (not extension ('cos that's .ASG)) */
	byte d, m; /* D, M, Y are the Day, Month & Year this game was... */
	word y;  /* ...saved on. */
	varying_string<40> desc; /* Description of game (same as in Avaricius!) */
	word len; /* Length of DNA (it's not going to be above 65535!) */

	/* Quick reference & miscellaneous */

	word saves; /* no. of times this game has been saved */
	integer cash; /* contents of your wallet in numerical form */
	varying_string<20> money; /* ditto in string form (eg 5/-, or 1 denarius)*/
	word points; /* your score */

	/* DNA values follow, then footer (which is ignored) */
};
/* Possible values of edhead.os:
   1 = DOS        4 = Mac
   2 = Windows    5 = Amiga
   3 = OS/2       6 = ST */

/*implementation*/

untyped_file f;
byte fv;
array<1, 255, word> dna256;
boolean ok;
edhead e;

void info256(string x) {     /* info on dna256 *.ASG files */
	varying_string<40> describe;
	assign(f, x);
	/*$I-*/ reset(f, 1);
	seek(f, 47);
	blockread(f, describe, 40);
	blockread(f, dna256, sizeof(dna256));
	close(f); /*$I+*/
	{
		e.revision = 1;
		e.game = "Denarius Avaricius Sextus";
		e.shortname = "Avaricius";
		e.number = 1;
		e.verstr = "[?]";
		e.filename = "AVVY.EXE";
		e.os = 1; /* Dos */
		e.fn = x;
		e.d = dna256[7];
		e.m = dna256[8];
		e.y = dna256[9];
		e.desc = describe;
		e.len = 512;
		e.saves = dna256[6];
		e.cash = dna256[30];
		e.money = strf(e.cash) + " denari";
		if (e.cash == 1)  e.money = e.money + "us";
		else e.money = e.money + 'i';
		e.points = dna256[36];
	}
}

string enlarge(string x) {
	string enlarge_result;
	switch (x[length(x)]) {
	case '*': {
		x[0] -= 1;
		x = x + "uary";
	}
	break;
	case '&': {
		x[0] -= 1;
		x = x + "ember";
	}
	break;
	}
	enlarge_result = x;
	return enlarge_result;
}

string th(byte x) {
	varying_string<4> n;
	string th_result;
	n = strf(x);
	switch (x) {
	case 1:
	case 21:
	case 31:
		n = n + "st";
		break;
	case 2:
	case 22:
		n = n + "nd";
		break;
	case 3:
	case 23:
		n = n + "rd";
		break;
	default:
		n = n + "th";
	}
	th_result = n;
	return th_result;
}

int main(int argc, const char *argv[]) {
	pio_initialize(argc, argv);
	info256("t:justb4.asg");

	{
		output << "DNA coding: ";
		switch (e.revision) {
		case 1:
			output << "dna256" << NL;
			break;
		case 2:
			output << "E.D.N.A." << NL;
			break;
		default:
			output << "Unknown!" << NL;
		}
		output << "Filename: " << e.game << " (version " << e.verstr << ')' << NL;
		output << "Description: " << e.desc << NL;
		output << "Cash: " << e.money << NL;
		output << "Score: " << e.points << NL;
		output << "Date: " << th(e.d) << ' ' << enlarge(months[e.m]) << ' ' << e.y << NL;
		output << "Number of saves: " << e.saves << NL;
	}
	return EXIT_SUCCESS;
}

} // End of namespace Avalanche.