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