1 files changed, 116 insertions, 0 deletions
diff --git a/site-manager/src/main/java/org/onap/policy/common/sitemanager/utils/CommandLineHelper.java b/site-manager/src/main/java/org/onap/policy/common/sitemanager/utils/CommandLineHelper.java
new file mode 100644
index 00000000..58db7bc8
--- /dev/null
+++ b/site-manager/src/main/java/org/onap/policy/common/sitemanager/utils/CommandLineHelper.java
@@ -0,0 +1,116 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * site-manager
+ * ================================================================================
+ * Copyright (C) 2018 Ericsson. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.sitemanager.utils;
+
+import java.util.List;
+import org.apache.commons.cli.CommandLine;
+import org.apache.commons.cli.CommandLineParser;
+import org.apache.commons.cli.DefaultParser;
+import org.apache.commons.cli.Option;
+import org.apache.commons.cli.Options;
+import org.apache.commons.cli.ParseException;
+import org.onap.policy.common.sitemanager.exception.IllegalCommandLineArgumentException;
+
+public class CommandLineHelper {
+
+    private static final String HELP_QUESTION_MARK_ARGUMENT_NAME = "?";
+
+    private static final String HELP_ARGUMENT_NAME = "h";
+
+    private static final String RESOURCE_ARGUMENT_NAME = "r";
+
+    private static final String SITE_ARGUMENT_NAME = "s";
+
+    private final CommandLine commandLine;
+
+    private static final CommandLineParser PARSER = new DefaultParser();
+
+    private final Printable printable;
+
+    public CommandLineHelper(final String[] args, final Printable printable) {
+        this.commandLine = getCommandLine(getOptions(), args);
+        this.printable = printable;
+    }
+
+    private Options getOptions() {
+        final Options options = new Options();
+        options.addOption(Option.builder(SITE_ARGUMENT_NAME).hasArg(true).desc("specify site").build());
+        options.addOption(Option.builder(RESOURCE_ARGUMENT_NAME).hasArg(true).desc("specify resource name").build());
+        options.addOption(Option.builder(HELP_ARGUMENT_NAME).hasArg(false).desc("display help").build());
+        options.addOption(Option.builder(HELP_QUESTION_MARK_ARGUMENT_NAME).hasArg(false).desc("display help").build());
+
+        return options;
+    }
+
+    public String getSite() {
+        return commandLine.getOptionValue(SITE_ARGUMENT_NAME);
+    }
+
+    public String getResourceName() {
+        return commandLine.getOptionValue(RESOURCE_ARGUMENT_NAME);
+    }
+
+    private CommandLine getCommandLine(final Options options, final String[] args) {
+        try {
+            return PARSER.parse(options, args);
+        } catch (final ParseException | NullPointerException exception) {
+            throw new IllegalCommandLineArgumentException(exception.getMessage(), exception);
+        }
+    }
+
+    public boolean isValid() {
+        // fetch options, and remaining arguments
+        final String sOption = commandLine.getOptionValue(SITE_ARGUMENT_NAME);
+        final String rOption = commandLine.getOptionValue(RESOURCE_ARGUMENT_NAME);
+        final List<String> argList = commandLine.getArgList();
+
+        // a number of commands require either the '-r' option or '-s' option
+        final boolean optionLetterSpecified = (rOption != null || sOption != null);
+
+        if (argList.isEmpty()) {
+            printable.println(ErrorMessages.NO_COMMAND_SPECIFIED);
+            return false;
+        }
+        // a number of commands require either the '-r' option or '-s' option
+        final String arg0 = argList.get(0);
+        final ExtraCommandLineArgument argument = ExtraCommandLineArgument.getExtraCommandLineArgument(arg0);
+
+        if (!argument.isValid(argList, printable, optionLetterSpecified)) {
+            return false;
+        }
+
+        if (sOption != null && rOption != null) {
+            printable.println(arg0 + ErrorMessages.R_AND_S_OPTIONS_ARE_MUTUALLY_EXCLUSIVE);
+            return false;
+        }
+
+        return true;
+    }
+
+    public boolean isHelpArgumentSet() {
+        return commandLine.hasOption(HELP_ARGUMENT_NAME) || commandLine.hasOption(HELP_QUESTION_MARK_ARGUMENT_NAME);
+    }
+
+    public List<String> getArgList() {
+        return commandLine.getArgList();
+    }
+
+}