Added FileParameters type.

[svjatoslav_commons.git] / src / main / java / eu / svjatoslav / commons / commandline / parameterparser / parameter / FileParameters.java

diff --git a/src/main/java/eu/svjatoslav/commons/commandline/parameterparser/parameter/FileParameters.java b/src/main/java/eu/svjatoslav/commons/commandline/parameterparser/parameter/FileParameters.java
new file mode 100755 (executable)
index 0000000..b56c867
--- /dev/null
+++ b/src/main/java/eu/svjatoslav/commons/commandline/parameterparser/parameter/FileParameters.java
@@ -0,0 +1,54 @@
+/*
+ * Svjatoslav Commons - shared library of common functionality.
+ * Copyright ©2012-2017, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 3 of the GNU Lesser General Public License
+ * or later as published by the Free Software Foundation.
+ */
+
+package eu.svjatoslav.commons.commandline.parameterparser.parameter;
+
+import eu.svjatoslav.commons.commandline.parameterparser.ArgumentCount;
+import eu.svjatoslav.commons.commandline.parameterparser.Parameter;
+
+import java.io.File;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import static eu.svjatoslav.commons.commandline.parameterparser.parameter.FileParameter.validateFile;
+
+public class FileParameters extends Parameter<List<File>, FileParameters> {
+
+    private ExistenceType existenceType = ExistenceType.DOES_NOT_MATTER;
+
+    public FileParameters(final String description) {
+        super(description, ArgumentCount.MULTI);
+    }
+
+    @Override
+    public String describeFormat() {
+        return existenceType.description + " files";
+    }
+
+    @Override
+    public List<File> getValue() {
+        return arguments.stream().map(File::new).collect(Collectors.toList());
+    }
+
+    public FileParameters mustExist() {
+        existenceType = ExistenceType.MUST_EXIST;
+        return this;
+    }
+
+    public FileParameters mustNotExist() {
+        existenceType = ExistenceType.MUST_NOT_EXIST;
+        return this;
+    }
+
+    @Override
+    public boolean validate(final String value) {
+        return validateFile(existenceType, value);
+    }
+
+}