latest SDK

foobar2000/helpers/ProfileCache.h

@@ -0,0 +1,39 @@
+#pragma once
+
+namespace ProfileCache {
+	inline file::ptr FetchFile(const char * context, const char * name, const char * webURL, t_filetimestamp acceptableAge, abort_callback & abort) {
+		const double timeoutVal = 5;
+
+		auto path = core_api::pathInProfile( context );
+		auto fsLocal = filesystem::get(path);
+		fsLocal->make_directory(path, abort);
+		path.add_filename( name );
+
+		bool fetch = false;
+		file::ptr fLocal;
+		
+		try {
+			fLocal = fsLocal->openWriteExisting(path, abort, timeoutVal );
+			fetch = fLocal->get_timestamp(abort) < filetimestamp_from_system_timer() - acceptableAge;
+		} catch(exception_io_not_found) {
+			fLocal = fsLocal->openWriteNew(path, abort, timeoutVal);
+			fetch = true;
+		}
+		if (fetch) {
+			try {
+				fLocal->resize(0, abort);
+				file::ptr fRemote;
+				filesystem::g_open(fRemote, webURL, filesystem::open_mode_read, abort);
+				file::g_transfer_file(fRemote, fLocal, abort );
+			} catch(exception_io) {
+				fLocal.release();
+				try { 
+					retryOnSharingViolation(timeoutVal, abort, [&] {fsLocal->remove(path, abort);} );
+				} catch(...) {}
+				throw;
+			}
+			fLocal->seek(0, abort);
+		}
+		return fLocal;
+	}
+};