Update naming in commandline parser

[cli-helper.git] / src / main / java / eu / svjatoslav / commons / cli_helper / parameter_parser / parameter / FileOptions.java

diff --git a/src/main/java/eu/svjatoslav/commons/cli_helper/parameter_parser/parameter/FileOptions.java b/src/main/java/eu/svjatoslav/commons/cli_helper/parameter_parser/parameter/FileOptions.java
new file mode 100755 (executable)
index 0000000..8328bd3
--- /dev/null
+++ b/src/main/java/eu/svjatoslav/commons/cli_helper/parameter_parser/parameter/FileOptions.java
@@ -0,0 +1,49 @@
+/*
+ * Svjatoslav Commons - shared library of common functionality. Author: Svjatoslav Agejenko.
+ * This project is released under Creative Commons Zero (CC0) license.
+ */
+package eu.svjatoslav.commons.cli_helper.parameter_parser.parameter;
+
+import eu.svjatoslav.commons.cli_helper.parameter_parser.ParameterCount;
+import eu.svjatoslav.commons.cli_helper.parameter_parser.Option;
+
+import java.io.File;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import static eu.svjatoslav.commons.cli_helper.parameter_parser.parameter.FileOption.validateFile;
+
+public class FileOptions extends Option<List<File>, FileOptions> {
+
+    private ExistenceType existenceType = ExistenceType.DOES_NOT_MATTER;
+
+    public FileOptions(final String description) {
+        super(description, ParameterCount.MULTI);
+    }
+
+    @Override
+    public String describeFormat() {
+        return existenceType.description + " files";
+    }
+
+    @Override
+    public List<File> getValue() {
+        return parameters.stream().map(File::new).collect(Collectors.toList());
+    }
+
+    public FileOptions mustExist() {
+        existenceType = ExistenceType.MUST_EXIST;
+        return this;
+    }
+
+    public FileOptions mustNotExist() {
+        existenceType = ExistenceType.MUST_NOT_EXIST;
+        return this;
+    }
+
+    @Override
+    public boolean isValid(final String value) {
+        return validateFile(existenceType, value);
+    }
+
+}