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/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
* Copyright (C) 2011-2017 Dean Beeler, Jerome Fisher, Sergey V. Mikayev
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <cstring>
#include "internals.h"
#include "File.h"
#include "sha1/sha1.h"
namespace MT32Emu {
AbstractFile::AbstractFile() : sha1DigestCalculated(false) {
sha1Digest[0] = 0;
reserved = NULL;
}
AbstractFile::AbstractFile(const SHA1Digest &useSHA1Digest) : sha1DigestCalculated(true) {
memcpy(sha1Digest, useSHA1Digest, sizeof(SHA1Digest) - 1);
sha1Digest[sizeof(SHA1Digest) - 1] = 0; // Ensure terminator char.
reserved = NULL;
}
const File::SHA1Digest &AbstractFile::getSHA1() {
if (sha1DigestCalculated) {
return sha1Digest;
}
sha1DigestCalculated = true;
size_t size = getSize();
if (size == 0) {
return sha1Digest;
}
const Bit8u *data = getData();
if (data == NULL) {
return sha1Digest;
}
unsigned char fileDigest[20];
sha1::calc(data, int(size), fileDigest);
sha1::toHexString(fileDigest, sha1Digest);
return sha1Digest;
}
ArrayFile::ArrayFile(const Bit8u *useData, size_t useSize) : data(useData), size(useSize)
{}
ArrayFile::ArrayFile(const Bit8u *useData, size_t useSize, const SHA1Digest &useSHA1Digest) : AbstractFile(useSHA1Digest), data(useData), size(useSize)
{}
size_t ArrayFile::getSize() {
return size;
}
const Bit8u *ArrayFile::getData() {
return data;
}
} // namespace MT32Emu
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