merged dev into locallab_dev

rtgui/md5helper.h

@@ -0,0 +1,69 @@
+/*
+ *  This file is part of RawTherapee.
+ *
+ *  Copyright (c) 2004-201 Gabor Horvath <hgabor@rawtherapee.com>
+ *
+ *  RawTherapee 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.
+ *
+ *  RawTherapee 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 RawTherapee.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <memory>
+#include <iostream>
+
+#include <glib/gstdio.h>
+#include <giomm.h>
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+namespace {
+std::string getMD5 (const Glib::ustring& fname)
+{
+
+    auto file = Gio::File::create_for_path (fname);
+
+    if (file && file->query_exists ())   {
+
+#ifdef WIN32
+
+        std::unique_ptr<wchar_t, GFreeFunc> wfname (reinterpret_cast<wchar_t*> (g_utf8_to_utf16 (fname.c_str (), -1, NULL, NULL, NULL)), g_free);
+
+        WIN32_FILE_ATTRIBUTE_DATA fileAttr;
+
+        if (GetFileAttributesExW (wfname.get (), GetFileExInfoStandard, &fileAttr)) {
+            // We use name, size and creation time to identify a file.
+            const auto identifier = Glib::ustring::compose ("%1-%2-%3-%4", fileAttr.nFileSizeLow, fileAttr.ftCreationTime.dwHighDateTime, fileAttr.ftCreationTime.dwLowDateTime, fname);
+            return Glib::Checksum::compute_checksum (Glib::Checksum::CHECKSUM_MD5, identifier);
+        }
+
+#else
+
+        try {
+
+            if (auto info = file->query_info ()) {
+                // We only use name and size to identify a file.
+                const auto identifier = Glib::ustring::compose ("%1%2", fname, info->get_size ());
+                return Glib::Checksum::compute_checksum (Glib::Checksum::CHECKSUM_MD5, identifier);
+            }
+
+        } catch (Gio::Error&) {}
+
+#endif
+
+    }
+
+    return {};
+}
+
+}