added scm-cli and scm-server-util

scm-cli/src/main/java/sonia/scm/cli/CliParser.java

@@ -0,0 +1,199 @@
+/**
+ * Copyright (c) 2009, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of JAB; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://kenai.com/projects/jab
+ *
+ */
+
+
+
+package sonia.scm.cli;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.lang.reflect.Field;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public class CliParser
+{
+
+  /**
+   * Method description
+   *
+   *
+   *
+   * @param helpBuilder
+   * @param clazz
+   *
+   * @return
+   */
+  public String createHelp(CliHelpBuilder helpBuilder, Class clazz)
+  {
+    Field[] fields = clazz.getDeclaredFields();
+    List<Argument> arguments = new ArrayList<Argument>();
+
+    for (Field field : fields)
+    {
+      Argument argument = field.getAnnotation(Argument.class);
+
+      if (argument != null)
+      {
+        arguments.add(argument);
+      }
+    }
+
+    return helpBuilder.createHelp(arguments);
+  }
+
+  /**
+   * Method description
+   *
+   *
+   * @param helpBuilder
+   * @param object
+   *
+   * @return
+   */
+  public String createHelp(CliHelpBuilder helpBuilder, Object object)
+  {
+    return createHelp(helpBuilder, object.getClass());
+  }
+
+  /**
+   * Method description
+   *
+   *
+   * @param object
+   * @param arguments
+   *
+   * @throws CliException
+   */
+  public void parse(Object object, String[] arguments) throws CliException
+  {
+    Field[] fields = object.getClass().getDeclaredFields();
+    int length = arguments.length;
+
+    for (Field field : fields)
+    {
+      Argument argument = field.getAnnotation(Argument.class);
+
+      if (argument != null)
+      {
+        String name = "-" + argument.value();
+        String longName = "--" + argument.longName();
+        boolean found = false;
+
+        for (int i = 0; i < length; i++)
+        {
+          if (arguments[i].equals(name)
+              || (!longName.equals("--") && arguments[i].startsWith(longName)))
+          {
+            found = true;
+
+            if (field.getType().isAssignableFrom(Boolean.class))
+            {
+              setArgument(object, field, Boolean.TRUE);
+            }
+            else if (arguments[i].equals(name) && (i + 1 < length))
+            {
+              setArgument(object, field,
+                          ConvertUtil.convertString(field.getType(),
+                                             arguments[i + 1]));
+            }
+            else if (arguments[i].startsWith(longName + "="))
+            {
+              String value = arguments[i].substring(longName.length() + 1);
+
+              if ((value != null) && (value.length() > 0))
+              {
+                setArgument(object, field,
+                            ConvertUtil.convertString(field.getType(), value));
+              }
+            }
+            else
+            {
+              throw new CliException("missing parameter for " + name);
+            }
+          }
+        }
+
+        if (!found && argument.required())
+        {
+          throw new CliRequiredException(name + " is required");
+        }
+      }
+    }
+  }
+
+  //~--- set methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   *
+   * @param object
+   * @param field
+   * @param value
+   *
+   * @throws CliException
+   */
+  private void setArgument(Object object, Field field, Object value)
+          throws CliException
+  {
+    try
+    {
+      boolean modifyAccess = false;
+
+      if (!field.isAccessible())
+      {
+        field.setAccessible(true);
+        modifyAccess = true;
+      }
+
+      field.set(object, value);
+
+      if (modifyAccess)
+      {
+        field.setAccessible(false);
+      }
+    }
+    catch (Exception ex)
+    {
+      throw new CliException(ex);
+    }
+  }
+}