Some tidying up

1 files changed, 63 insertions, 0 deletions

diff --git a/spark-common/src/main/java/me/lucko/spark/common/util/TemporaryFiles.java b/spark-common/src/main/java/me/lucko/spark/common/util/TemporaryFiles.java
new file mode 100644
index 0000000..8a4a621
--- /dev/null
+++ b/spark-common/src/main/java/me/lucko/spark/common/util/TemporaryFiles.java
@@ -0,0 +1,63 @@
+/*
+ * This file is part of spark.
+ *
+ *  Copyright (c) lucko (Luck) <luck@lucko.me>
+ *  Copyright (c) contributors
+ *
+ *  This program 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.
+ *
+ *  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package me.lucko.spark.common.util;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
+
+/**
+ * Utility for handling temporary files.
+ */
+public final class TemporaryFiles {
+    private TemporaryFiles() {}
+
+    private static final Set<Path> DELETE_SET = Collections.synchronizedSet(new HashSet<>());
+
+    public static Path create(String prefix, String suffix) throws IOException {
+        return register(Files.createTempFile(prefix, suffix));
+    }
+
+    public static Path register(Path path) {
+        path.toFile().deleteOnExit();
+        DELETE_SET.add(path);
+        return path;
+    }
+
+    public static void deleteTemporaryFiles() {
+        synchronized (DELETE_SET) {
+            for (Iterator<Path> iterator = DELETE_SET.iterator(); iterator.hasNext(); ) {
+                Path path = iterator.next();
+                try {
+                    Files.deleteIfExists(path);
+                } catch (IOException e) {
+                    // ignore
+                }
+                iterator.remove();
+            }
+        }
+    }
+
+}