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--- a/Build/source/texk/dvisvgm/dvisvgm-src/src/HashFunction.cpp
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-/*************************************************************************
-** HashFunction.cpp **
-** **
-** This file is part of dvisvgm -- a fast DVI to SVG converter **
-** Copyright (C) 2005-2021 Martin Gieseking <martin.gieseking@uos.de> **
-** **
-** 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 3 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, see <http://www.gnu.org/licenses/>. **
-*************************************************************************/
-
-#include <algorithm>
-#include <iomanip>
-#include <sstream>
-#include "HashFunction.hpp"
-#include "utility.hpp"
-#include "MD5HashFunction.hpp"
-#include "XXHashFunction.hpp"
-
-using namespace std;
-
-
-/** Returns a vector containing the names of the currently supported hash algorithms. */
-vector<string> HashFunction::supportedAlgorithms () {
- return vector<string> {
- "md5", "xxh32", "xxh64",
-#ifdef ENABLE_XXH128
- "xxh128"
-#endif
- };
-}
-
-
-/** Returns true if 'algo' is the name of a supported hash algorithm. */
-bool HashFunction::isSupportedAlgorithm (const std::string &algo) {
- auto algos = supportedAlgorithms();
- return find(algos.begin(), algos.end(), algo) != algos.end();
-}
-
-
-/** Creates a hash function for a given algorithm name/identifier.
- * The following names are currently supported: md5, xxh32, xxh64. */
-unique_ptr<HashFunction> HashFunction::create (const string &name) {
- string lowerName = util::tolower(name);
- if (lowerName == "md5")
- return util::make_unique<MD5HashFunction>();
- if (lowerName == "xxh32")
- return util::make_unique<XXH32HashFunction>();
- if (lowerName == "xxh64")
- return util::make_unique<XXH64HashFunction>();
-#ifdef ENABLE_XXH128
- if (lowerName == "xxh128")
- return util::make_unique<XXH128HashFunction>();
-#endif
- return nullptr;
-}
-
-
-std::unique_ptr<HashFunction> HashFunction::create (const string &name, const char *data, size_t length) {
- auto hashfunc = create(name);
- if (hashfunc)
- hashfunc->update(data, length);
- return hashfunc;
-}
-
-
-std::unique_ptr<HashFunction> HashFunction::create (const string &name, const string &data) {
- return create(name, data.data(), data.length());
-}
-
-
-std::unique_ptr<HashFunction> HashFunction::create (const string &name, const vector<uint8_t> &data) {
- return create(name, reinterpret_cast<const char*>(data.data()), data.size());
-}
-
-
-void HashFunction::update (istream &is) {
- char buf[4096];
- while (is) {
- is.read(buf, 4096);
- update(buf, is.gcount());
- }
-}
-
-
-/** Returns the current digest as hexadecimal value. */
-string HashFunction::digestString () const {
- ostringstream oss;
- oss << hex << setfill('0');
- for (int byte : digestBytes())
- oss << setw(2) << byte;
- return oss.str();
-}