On Windows, system and hidden files are now ignored in all file

enumeration loops.
Should fix "desktop.ini still displaying error" #1761

src/libslic3r/Utils.hpp

@@ -8,6 +8,8 @@
 
 #include "libslic3r.h"
 
+namespace boost { namespace filesystem { class directory_entry; }}
+
 namespace Slic3r {
 
 extern void set_logging_level(unsigned int level);
@@ -61,6 +63,12 @@ extern int rename_file(const std::string &from, const std::string &to);
 // Copy a file, adjust the access attributes, so that the target is writable.
 extern int copy_file(const std::string &from, const std::string &to);
 
+// Ignore system and hidden files, which may be created by the DropBox synchronisation process.
+// https://github.com/prusa3d/Slic3r/issues/1298
+extern bool is_plain_file(const boost::filesystem::directory_entry &path);
+extern bool is_ini_file(const boost::filesystem::directory_entry &path);
+extern bool is_idx_file(const boost::filesystem::directory_entry &path);
+
 // File path / name / extension splitting utilities, working with UTF-8,
 // to be published to Perl.
 namespace PerlUtils {

src/libslic3r/utils.cpp

@@ -30,7 +30,13 @@
 
 #include <tbb/task_scheduler_init.h>
 
-#include <tbb/task_scheduler_init.h>
+#if defined(__linux) || defined(__GNUC__ )
+#include <strings.h>
+#endif /* __linux */
+
+#ifdef _MSC_VER 
+    #define strcasecmp _stricmp
+#endif
 
 namespace Slic3r {
 
@@ -248,6 +254,30 @@ int copy_file(const std::string &from, const std::string &to)
     return 0;
 }
 
+// Ignore system and hidden files, which may be created by the DropBox synchronisation process.
+// https://github.com/prusa3d/Slic3r/issues/1298
+bool is_plain_file(const boost::filesystem::directory_entry &dir_entry)
+{
+    if (! boost::filesystem::is_regular_file(dir_entry.status()))
+        return false;
+#ifdef _MSC_VER
+    DWORD attributes = GetFileAttributesW(boost::nowide::widen(dir_entry.path().string()).c_str());
+    return (attributes & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM)) == 0;
+#else
+    return true;
+#endif
+}
+
+bool is_ini_file(const boost::filesystem::directory_entry &dir_entry)
+{
+    return is_plain_file(dir_entry) && strcasecmp(dir_entry.path().extension().string().c_str(), ".ini") == 0;
+}
+
+bool is_idx_file(const boost::filesystem::directory_entry &dir_entry)
+{
+	return is_plain_file(dir_entry) && strcasecmp(dir_entry.path().extension().string().c_str(), ".idx") == 0;
+}
+
 } // namespace Slic3r
 
 #ifdef WIN32

src/slic3r/Config/Snapshot.cpp

@@ -249,10 +249,10 @@ bool Snapshot::equal_to_active(const AppConfig &app_config) const
         boost::filesystem::path path2 = snapshot_dir / subdir;
         std::vector<std::string> files1, files2;
         for (auto &dir_entry : boost::filesystem::directory_iterator(path1))
-            if (boost::filesystem::is_regular_file(dir_entry.status()) && boost::algorithm::iends_with(dir_entry.path().filename().string(), ".ini"))
+            if (Slic3r::is_ini_file(dir_entry))
                 files1.emplace_back(dir_entry.path().filename().string());
         for (auto &dir_entry : boost::filesystem::directory_iterator(path2))
-            if (boost::filesystem::is_regular_file(dir_entry.status()) && boost::algorithm::iends_with(dir_entry.path().filename().string(), ".ini"))
+            if (Slic3r::is_ini_file(dir_entry))
                 files2.emplace_back(dir_entry.path().filename().string());
         std::sort(files1.begin(), files1.end());
         std::sort(files2.begin(), files2.end());
@@ -343,7 +343,7 @@ static void copy_config_dir_single_level(const boost::filesystem::path &path_src
         throw std::runtime_error(std::string("Slic3r was unable to create a directory at ") + path_dst.string());
 
 	for (auto &dir_entry : boost::filesystem::directory_iterator(path_src))
-        if (boost::filesystem::is_regular_file(dir_entry.status()) && boost::algorithm::iends_with(dir_entry.path().filename().string(), ".ini"))
+        if (Slic3r::is_ini_file(dir_entry))
 		    boost::filesystem::copy_file(dir_entry.path(), path_dst / dir_entry.path().filename(), boost::filesystem::copy_option::overwrite_if_exists);
 }
 

src/slic3r/Config/Version.cpp

@@ -297,7 +297,7 @@ std::vector<Index> Index::load_db()
     std::vector<Index> index_db;
     std::string errors_cummulative;
 	for (auto &dir_entry : boost::filesystem::directory_iterator(cache_dir))
-        if (boost::filesystem::is_regular_file(dir_entry.status()) && boost::algorithm::iends_with(dir_entry.path().filename().string(), ".idx")) {
+        if (Slic3r::is_idx_file(dir_entry)) {
         	Index idx;
             try {
             	idx.load(dir_entry.path());

src/slic3r/GUI/ConfigWizard.cpp

@@ -635,35 +635,32 @@ void ConfigWizard::priv::load_vendors()
 	const auto rsrc_vendor_dir = fs::path(resources_dir()) / "profiles";
 
 	// Load vendors from the "vendors" directory in datadir
-	for (fs::directory_iterator it(vendor_dir); it != fs::directory_iterator(); ++it) {
+    for (auto &dir_entry : boost::filesystem::directory_iterator(vendor_dir))
-		if (it->path().extension() == ".ini") {
+		if (Slic3r::is_ini_file(dir_entry)) {
 			try {
-				auto vp = VendorProfile::from_ini(it->path());
+				auto vp = VendorProfile::from_ini(dir_entry.path());
 				vendors[vp.id] = std::move(vp);
 			}
 			catch (const std::exception& e) {
-				BOOST_LOG_TRIVIAL(error) << boost::format("Error loading vendor bundle %1%: %2%") % it->path() % e.what();
+				BOOST_LOG_TRIVIAL(error) << boost::format("Error loading vendor bundle %1%: %2%") % dir_entry.path() % e.what();
 			}
-
 		}
-	}
 
 	// Additionally load up vendors from the application resources directory, but only those not seen in the datadir
-	for (fs::directory_iterator it(rsrc_vendor_dir); it != fs::directory_iterator(); ++it) {
+    for (auto &dir_entry : boost::filesystem::directory_iterator(rsrc_vendor_dir))
-		if (it->path().extension() == ".ini") {
+		if (Slic3r::is_ini_file(dir_entry)) {
-			const auto id = it->path().stem().string();
+			const auto id = dir_entry.path().stem().string();
 			if (vendors.find(id) == vendors.end()) {
 				try {
-					auto vp = VendorProfile::from_ini(it->path());
+					auto vp = VendorProfile::from_ini(dir_entry.path());
-					vendors_rsrc[vp.id] = it->path().filename().string();
+					vendors_rsrc[vp.id] = dir_entry.path().filename().string();
 					vendors[vp.id] = std::move(vp);
 				}
 				catch (const std::exception& e) {
-					BOOST_LOG_TRIVIAL(error) << boost::format("Error loading vendor bundle %1%: %2%") % it->path() % e.what();
+					BOOST_LOG_TRIVIAL(error) << boost::format("Error loading vendor bundle %1%: %2%") % dir_entry.path() % e.what();
 				}
 			}
 		}
-	}
 
 	// Load up the set of vendors / models / variants the user has had enabled up till now
 	const AppConfig *app_config = GUI::get_app_config();
@@ -672,14 +669,15 @@ void ConfigWizard::priv::load_vendors()
 	} else {
 		// In case of legacy datadir, try to guess the preference based on the printer preset files that are present
 		const auto printer_dir = fs::path(Slic3r::data_dir()) / "printer";
-		for (fs::directory_iterator it(printer_dir); it != fs::directory_iterator(); ++it) {
+	    for (auto &dir_entry : boost::filesystem::directory_iterator(printer_dir))
-			auto needle = legacy_preset_map.find(it->path().filename().string());
+	    	if (Slic3r::is_ini_file(dir_entry)) {
-			if (needle == legacy_preset_map.end()) { continue; }
+				auto needle = legacy_preset_map.find(dir_entry.path().filename().string());
+				if (needle == legacy_preset_map.end()) { continue; }
 
-			const auto &model = needle->second.first;
+				const auto &model = needle->second.first;
-			const auto &variant = needle->second.second;
+				const auto &variant = needle->second.second;
-			appconfig_vendors.set_variant("PrusaResearch", model, variant, true);
+				appconfig_vendors.set_variant("PrusaResearch", model, variant, true);
-		}
+			}
 	}
 }
 

src/slic3r/GUI/Preset.cpp

@@ -517,16 +517,6 @@ void PresetCollection::add_default_preset(const std::vector<std::string> &keys,
     ++ m_num_default_presets;
 }
 
-bool is_file_plain(const std::string &path)
-{
-#ifdef _MSC_VER
-    DWORD attributes = GetFileAttributesW(boost::nowide::widen(path).c_str());
-    return (attributes & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM)) == 0;
-#else
-    return true;
-#endif
-}
-
 // Load all presets found in dir_path.
 // Throws an exception on error.
 void PresetCollection::load_presets(const std::string &dir_path, const std::string &subdir)
@@ -538,10 +528,7 @@ void PresetCollection::load_presets(const std::string &dir_path, const std::stri
 	// (see the "Preset already present, not loading" message).
 	std::deque<Preset> presets_loaded;
 	for (auto &dir_entry : boost::filesystem::directory_iterator(dir))
-        if (boost::filesystem::is_regular_file(dir_entry.status()) && boost::algorithm::iends_with(dir_entry.path().filename().string(), ".ini") &&
+        if (Slic3r::is_ini_file(dir_entry)) {
-            // Ignore system and hidden files, which may be created by the DropBox synchronisation process.
-            // https://github.com/prusa3d/Slic3r/issues/1298
-            is_file_plain(dir_entry.path().string())) {
             std::string name = dir_entry.path().filename().string();
             // Remove the .ini suffix.
             name.erase(name.size() - 4);

src/slic3r/GUI/PresetBundle.cpp

@@ -243,7 +243,7 @@ std::string PresetBundle::load_system_presets()
     std::string errors_cummulative;
     bool        first = true;
     for (auto &dir_entry : boost::filesystem::directory_iterator(dir))
-        if (boost::filesystem::is_regular_file(dir_entry.status()) && boost::algorithm::iends_with(dir_entry.path().filename().string(), ".ini")) {
+        if (Slic3r::is_ini_file(dir_entry)) {
             std::string name = dir_entry.path().filename().string();
             // Remove the .ini suffix.
             name.erase(name.size() - 4);

src/slic3r/Utils/PresetUpdater.cpp

@@ -180,12 +180,11 @@ bool PresetUpdater::priv::get_file(const std::string &url, const fs::path &targe
 // Remove leftover paritally downloaded files, if any.
 void PresetUpdater::priv::prune_tmps() const
 {
-	for (fs::directory_iterator it(cache_path); it != fs::directory_iterator(); ++it) {
+    for (auto &dir_entry : boost::filesystem::directory_iterator(cache_path))
-		if (it->path().extension() == TMP_EXTENSION) {
+		if (is_plain_file(dir_entry) && dir_entry.path().extension() == TMP_EXTENSION) {
-			BOOST_LOG_TRIVIAL(debug) << "Cache prune: " << it->path().string();
+			BOOST_LOG_TRIVIAL(debug) << "Cache prune: " << dir_entry.path().string();
-			fs::remove(it->path());
+			fs::remove(dir_entry.path());
 		}
-	}
 }
 
 // Get Slic3rPE version available online, save in AppConfig.
@@ -299,9 +298,9 @@ void PresetUpdater::priv::check_install_indices() const
 {
 	BOOST_LOG_TRIVIAL(info) << "Checking if indices need to be installed from resources...";
 
-	for (fs::directory_iterator it(rsrc_path); it != fs::directory_iterator(); ++it) {
+    for (auto &dir_entry : boost::filesystem::directory_iterator(rsrc_path))
-		const auto &path = it->path();
+		if (is_idx_file(dir_entry)) {
-		if (path.extension() == ".idx") {
+			const auto &path = dir_entry.path();
 			const auto path_in_cache = cache_path / path.filename();
 
 			if (! fs::exists(path_in_cache)) {
@@ -318,7 +317,6 @@ void PresetUpdater::priv::check_install_indices() const
 				}
 			}
 		}
-	}
 }
 
 // Generates a list of bundle updates that are to be performed