Initial commit

sop-java-picocli/src/main/java/sop/cli/picocli/commands/DetachInbandSignatureAndMessageCmd.java

@@ -0,0 +1,59 @@
+// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+import picocli.CommandLine;
+import sop.Signatures;
+import sop.cli.picocli.SopCLI;
+import sop.exception.SOPGPException;
+import sop.operation.DetachInbandSignatureAndMessage;
+
+@CommandLine.Command(name = "detach-inband-signature-and-message",
+        description = "Split a clearsigned message",
+        exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
+public class DetachInbandSignatureAndMessageCmd implements Runnable {
+
+    @CommandLine.Option(
+            names = {"--signatures-out"},
+            description = "Destination to which a detached signatures block will be written",
+            paramLabel = "SIGNATURES")
+    File signaturesOut;
+
+    @CommandLine.Option(names = "--no-armor",
+            description = "ASCII armor the output",
+            negatable = true)
+    boolean armor = true;
+
+    @Override
+    public void run() {
+        DetachInbandSignatureAndMessage detach = SopCLI.getSop().detachInbandSignatureAndMessage();
+        if (detach == null) {
+            throw new SOPGPException.UnsupportedSubcommand("Command 'detach-inband-signature-and-message' not implemented.");
+        }
+
+        if (signaturesOut == null) {
+            throw new SOPGPException.MissingArg("--signatures-out is required.");
+        }
+
+        if (!armor) {
+            detach.noArmor();
+        }
+
+        try {
+            Signatures signatures = detach
+                    .message(System.in).writeTo(System.out);
+            if (!signaturesOut.createNewFile()) {
+                throw new SOPGPException.OutputExists("Destination of --signatures-out already exists.");
+            }
+            signatures.writeTo(new FileOutputStream(signaturesOut));
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}