1 files changed, 181 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/shell/src/main/java/org/apache/tuscany/sca/shell/jline/TShellCompletor.java b/sca-java-2.x/tags/2.0.1-RC1/modules/shell/src/main/java/org/apache/tuscany/sca/shell/jline/TShellCompletor.java
new file mode 100644
index 0000000000..3f38caf1e5
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/shell/src/main/java/org/apache/tuscany/sca/shell/jline/TShellCompletor.java
@@ -0,0 +1,181 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.    
+ */
+
+package org.apache.tuscany.sca.shell.jline;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+import jline.ArgumentCompletor;
+import jline.Completor;
+import jline.ConsoleReader;
+import jline.FileNameCompletor;
+import jline.NullCompletor;
+import jline.SimpleCompletor;
+
+import org.apache.tuscany.sca.shell.Command;
+import org.apache.tuscany.sca.shell.Shell;
+
+/**
+ * A Completor thats specific to the Tuscany Shell that knows about
+ * each command and has an argument specific Completor for each command argument.
+ */
+public class TShellCompletor extends ArgumentCompletor {
+
+    Map<String, Completor[]> completors;
+    final Completor commandCompletor;
+    final ArgumentDelimiter delim = new WhitespaceArgumentDelimiter();
+    final Shell shell;
+    
+    static String lastArg;
+    static List<String> allArgs;
+
+    public TShellCompletor(Shell shell) {
+        super((Completor)null);
+        this.shell = shell;
+        this.commandCompletor = new SimpleCompletor(shell.getCommandNames());
+        
+        completors = new HashMap<String, Completor[]>();
+        completors.put("help", new Completor[]{commandCompletor, commandCompletor, new NullCompletor()});    
+        completors.put("install", new Completor[]{commandCompletor, new InstallCompletor(shell)});    
+        completors.put("installed", new Completor[]{commandCompletor, new ICURICompletor(shell), new NullCompletor()});    
+        completors.put("invoke", new Completor[]{commandCompletor, new ServiceCompletor(shell), new ServiceOperationCompletor(shell), new NullCompletor()});    
+        completors.put("load", new Completor[]{commandCompletor, new FileNameCompletor(), new NullCompletor()});    
+        completors.put("remove", new Completor[]{commandCompletor, new ICURICompletor(shell), new NullCompletor()});    
+        completors.put("run", new Completor[]{commandCompletor, new FileNameCompletor(), new NullCompletor()});    
+        completors.put("save", new Completor[]{commandCompletor, new FileNameCompletor(), new NullCompletor()});    
+        completors.put("start", new Completor[]{commandCompletor, new ICURICompletor(shell), new CompositeURICompletor(shell), new RemoteNodeCompletor(shell), new NullCompletor()});    
+        completors.put("started", new Completor[]{commandCompletor, new ICURICompletor(shell), new CompositeURICompletor(shell), new NullCompletor()});    
+        completors.put("stop", new Completor[]{commandCompletor, new ICURICompletor(shell), new CompositeURICompletor(shell), new NullCompletor()});    
+        
+        for (Command c : shell.getCommands().values()) {
+            List<Completor> compleors = new ArrayList<Completor>();
+            compleors.add(commandCompletor);
+            compleors.addAll(Arrays.asList(c.getCompletors()));
+            completors.put(c.getName(), compleors.toArray(new Completor[]{}));
+        }
+    }
+
+    @Override
+    /**
+     * Copied from JLine ArgumentCompletor class. The only change is to 
+     * get the completors by using the getCompletors method and setting the lastArg static.
+     */
+    public int complete(final String buffer, final int cursor,
+                        final List candidates) {
+        
+        ArgumentList list = delim.delimit(buffer, cursor);
+        int argpos = list.getArgumentPosition();
+        int argIndex = list.getCursorArgumentIndex();
+
+        if (argIndex < 0) {
+            return -1;
+        }
+
+        if (argIndex > 0) {
+            /* set the last argument in a static for the CompositeURICompletor */
+            lastArg = list.getArguments()[argIndex-1];
+            if (lastArg != null) lastArg = lastArg.trim();
+        }
+        allArgs = Arrays.asList(list.getArguments());
+        
+        final Completor comp;
+        
+        Completor[] completors = getCompletors(buffer);
+
+        // if we are beyond the end of the completors, just use the last one
+        if (argIndex >= completors.length) {
+            comp = completors[completors.length - 1];
+        } else {
+            comp = completors[argIndex];
+        }
+
+        // ensure that all the previous completors are successful before
+        // allowing this completor to pass (only if strict is true).
+        for (int i = 0; getStrict() && (i < argIndex); i++) {
+            Completor sub =
+                completors[(i >= completors.length) ? (completors.length - 1) : i];
+            String[] args = list.getArguments();
+            String arg = ((args == null) || (i >= args.length)) ? "" : args[i];
+
+            List subCandidates = new LinkedList();
+
+            if (sub.complete(arg, arg.length(), subCandidates) == -1) {
+                return -1;
+            }
+
+            if (subCandidates.size() == 0) {
+                return -1;
+            }
+        }
+
+        int ret = comp.complete(list.getCursorArgument(), argpos, candidates);
+
+        if (ret == -1) {
+            return -1;
+        }
+
+        int pos = ret + (list.getBufferPosition() - argpos);
+
+        /**
+         *  Special case: when completing in the middle of a line, and the
+         *  area under the cursor is a delimiter, then trim any delimiters
+         *  from the candidates, since we do not need to have an extra
+         *  delimiter.
+         *
+         *  E.g., if we have a completion for "foo", and we
+         *  enter "f bar" into the buffer, and move to after the "f"
+         *  and hit TAB, we want "foo bar" instead of "foo  bar".
+         */
+        if ((cursor != buffer.length()) && delim.isDelimiter(buffer, cursor)) {
+            for (int i = 0; i < candidates.size(); i++) {
+                String val = candidates.get(i).toString();
+
+                while ((val.length() > 0)
+                    && delim.isDelimiter(val, val.length() - 1)) {
+                    val = val.substring(0, val.length() - 1);
+                }
+
+                candidates.set(i, val);
+            }
+        }
+
+        ConsoleReader.debug("Completing " + buffer + "(pos=" + cursor + ") "
+            + "with: " + candidates + ": offset=" + pos);
+
+        return pos;
+    }
+
+    protected Completor[] getCompletors(String buffer) {
+        StringBuilder sb = new StringBuilder();
+        for (int i=0; i<buffer.length(); i++) {
+            if (Character.isWhitespace(buffer.charAt(i))) {
+                break;
+            }
+            sb.append(buffer.charAt(i));
+        }
+        String command = sb.toString();
+        Completor[] comps = completors.get(command);
+        return comps == null ? new Completor[]{commandCompletor} : comps;
+    }
+}