159 lines
3.2 KiB
C++
Executable File
159 lines
3.2 KiB
C++
Executable File
/*
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* (C) 2015 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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TAPArchive::TAPArchive()
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{
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data = NULL;
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dealloc();
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}
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TAPArchive::~TAPArchive()
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{
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dealloc();
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}
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bool
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TAPArchive::isTAPFile(const char *filename)
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{
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int magic_bytes[] = {0x43, 0x36, 0x34, 0x2D, 0x54, 0x41, 0x50, 0x45, 0x2D, 0x52, 0x41, 0x57, EOF};
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assert (filename != NULL);
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if (!checkFileSuffix(filename, ".TAP") && !checkFileSuffix(filename, ".tap"))
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return false;
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if (!checkFileSize(filename, 0x15, -1))
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return false;
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if (!checkFileHeader(filename, magic_bytes))
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return false;
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return true;
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}
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TAPArchive *
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TAPArchive::archiveFromTAPFile(const char *filename)
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{
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TAPArchive *archive;
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fprintf(stderr, "Loading TAP archive from TAP file...\n");
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archive = new TAPArchive();
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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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TAPArchive::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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const char *
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TAPArchive::getName()
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{
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unsigned i;
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for (i = 0; i < 17; i++) {
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name[i] = pet2ascii(data[0x08+i]);
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}
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name[i] = 0x00;
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return name;
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}
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bool
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TAPArchive::fileIsValid(const char *filename)
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{
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return isTAPFile(filename);
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}
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bool
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TAPArchive::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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size = length;
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for (unsigned i = 16; i > 0; i--) {
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fprintf(stderr, "%02X ", data[size - i]);
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}
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fprintf(stderr, "\n");
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int l = LO_LO_HI_HI(data[0x10], data[0x11], data[0x12], data[0x13]);
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if (l + 0x14 /* Header */ != size) {
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fprintf(stderr, "Size mismatch! Archive should have %d data bytes, found %d\n", l, size - 0x14);
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}
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return true;
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}
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unsigned
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TAPArchive::writeToBuffer(uint8_t *buffer)
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{
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assert(data != NULL);
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if (buffer) {
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memcpy(buffer, data, size);
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}
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return size;
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}
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#if 0
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void
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TAPArchive::selectItem(int n)
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{
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if (n == 0)
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fp = 0x0014; // Rewind
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else
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fp = -1; // No such item
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}
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int
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TAPArchive::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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#endif
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