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65 lines
1.2 KiB
C++
65 lines
1.2 KiB
C++
// ASEPRITE base library
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// Copyright (C) 2001-2012 David Capello
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//
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// This source file is ditributed under a BSD-like license, please
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// read LICENSE.txt for more information.
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#include "config.h"
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#include "base/sha1.h"
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#include "base/sha1_rfc3174.h"
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#include <fstream>
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#include <cassert>
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namespace base {
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Sha1::Sha1()
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: m_digest(20, 0)
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{
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}
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Sha1::Sha1(const std::vector<uint8_t>& digest)
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: m_digest(digest)
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{
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assert(digest.size() == HashSize);
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}
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// Calculates the SHA1 of the given file.
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Sha1 Sha1::calculateFromFile(const std::string& fileName)
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{
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using namespace std;
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ifstream file(fileName.c_str(), ios::in | ios::binary);
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if (!file.good())
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return Sha1();
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SHA1Context sha;
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SHA1Reset(&sha);
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unsigned char buf[1024];
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while (file.good()) {
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file.read((char*)buf, 1024);
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streamsize len = file.gcount();
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if (len > 0)
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SHA1Input(&sha, buf, len);
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}
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vector<uint8_t> digest(HashSize);
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SHA1Result(&sha, &digest[0]);
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return Sha1(digest);
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}
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bool Sha1::operator==(const Sha1& other) const
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{
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return m_digest == other.m_digest;
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}
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bool Sha1::operator!=(const Sha1& other) const
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{
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return m_digest != other.m_digest;
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}
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} // namespace base
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