merge with dev

rtgui/cachemanager.cc

@@ -32,7 +32,7 @@
 #include "options.h"
 #include "procparamchangers.h"
 #include "thumbnail.h"
-#include "md5helper.h"
+//#include "md5helper.h"
 namespace
 {
 
@@ -308,10 +308,42 @@ void CacheManager::deleteFiles (const Glib::ustring& fname, const std::string& m
         error |= g_remove (getCacheFileName ("mip", fname, ".mip", md5).c_str ());
 
     }
+}
 
-    if (error != 0 && options.rtSettings.verbose) {
-        std::cerr << "Failed to delete all files for cache entry '" << fname << "': " << g_strerror (errno) << std::endl;
+std::string CacheManager::getMD5 (const Glib::ustring& fname)
+{
+
+#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
+
+    const auto file = Gio::File::create_for_path(fname);
+    if (file) {
+
+        try
+        {
+            const auto info = file->query_info("standard::*");
+            if (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 {};
 }
 
 Glib::ustring CacheManager::getCacheFileName (const Glib::ustring& subDir,