70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
/*
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* This file is part of RawTherapee.
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*
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* Copyright (c) 2004-201 Gabor Horvath <hgabor@rawtherapee.com>
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*
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* RawTherapee 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 3 of the License, or
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* (at your option) any later version.
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*
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* RawTherapee 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 RawTherapee. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <memory>
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#include <iostream>
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#include <glib/gstdio.h>
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#include <giomm.h>
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#ifdef WIN32
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#include <windows.h>
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#endif
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namespace {
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std::string getMD5 (const Glib::ustring& fname)
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{
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auto file = Gio::File::create_for_path (fname);
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if (file && file->query_exists ()) {
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#ifdef WIN32
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std::unique_ptr<wchar_t, GFreeFunc> wfname (reinterpret_cast<wchar_t*> (g_utf8_to_utf16 (fname.c_str (), -1, NULL, NULL, NULL)), g_free);
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WIN32_FILE_ATTRIBUTE_DATA fileAttr;
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if (GetFileAttributesExW (wfname.get (), GetFileExInfoStandard, &fileAttr)) {
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// We use name, size and creation time to identify a file.
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const auto identifier = Glib::ustring::compose ("%1-%2-%3-%4", fileAttr.nFileSizeLow, fileAttr.ftCreationTime.dwHighDateTime, fileAttr.ftCreationTime.dwLowDateTime, fname);
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return Glib::Checksum::compute_checksum (Glib::Checksum::CHECKSUM_MD5, identifier);
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}
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#else
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try {
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if (auto info = file->query_info ()) {
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// We only use name and size to identify a file.
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const auto identifier = Glib::ustring::compose ("%1%2", fname, info->get_size ());
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return Glib::Checksum::compute_checksum (Glib::Checksum::CHECKSUM_MD5, identifier);
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}
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} catch (Gio::Error&) {}
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#endif
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}
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return {};
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}
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}
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