157 lines
2.8 KiB
C++
Executable File
157 lines
2.8 KiB
C++
Executable File
/*
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* (C) 2011 Dirk W. Hoffmann. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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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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*
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "C64.h"
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FileArchive::FileArchive()
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{
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data = NULL;
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dealloc();
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}
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FileArchive::~FileArchive()
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{
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dealloc();
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}
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bool
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FileArchive::isAcceptableFile(const char *filename)
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{
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assert (filename != NULL);
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// we accept every file that fits into a standard C64 disk (approx. 170 kB)
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// TODO: Determine, how much data really fits on a disk.
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if (!checkFileSize(filename, 0x1A, 120000))
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return false;
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return true;
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}
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FileArchive *
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FileArchive::archiveFromRawFiledata(const char *filename)
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{
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FileArchive *archive;
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fprintf(stderr, "Loading file archive from file...\n");
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archive = new FileArchive();
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if (!archive->readFromFile(filename)) {
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fprintf(stderr, "Failed to load archive\n");
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delete archive;
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archive = NULL;
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}
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return archive;
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}
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void
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FileArchive::dealloc()
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{
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if (data) free(data);
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data = NULL;
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size = 0;
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fp = -1;
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}
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bool
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FileArchive::fileIsValid(const char *filename)
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{
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return isAcceptableFile(filename);
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}
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bool
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FileArchive::readFromBuffer(const uint8_t *buffer, unsigned length)
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{
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if ((data = (uint8_t *)malloc(length)) == NULL)
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return false;
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memcpy(data, buffer, length);
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fprintf(stderr, "length = %d %x\n", length, length);
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size = length;
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return true;
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}
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int
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FileArchive::getNumberOfItems()
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{
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return 1;
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}
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const char *
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FileArchive::getNameOfItem(int n)
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{
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strncpy(name, getName(), 17);
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for (unsigned i = 0; i < 17; i++) {
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name[i] = toupper(name[i]);
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}
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return name;
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}
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int
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FileArchive::getSizeOfItem(int n)
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{
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return size - 2;
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}
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const char *
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FileArchive::getTypeOfItem(int n)
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{
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return "PRG";
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}
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uint16_t
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FileArchive::getDestinationAddrOfItem(int n)
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{
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uint16_t result = data[0x00] + (data[0x01] << 8);
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printf("Will load to location %X\n", result);
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return result;
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}
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void
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FileArchive::selectItem(int n)
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{
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fp = 0x02;
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if (fp >= size || n != 0)
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fp = -1;
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}
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int
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FileArchive::getByte()
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{
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int result;
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if (fp < 0)
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return -1;
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// get byte
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result = data[fp];
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// check for end of file
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if (fp == (size-1)) {
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fp = -1;
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} else {
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// advance file pointer
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fp++;
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}
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return result;
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}
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