1 files changed, 71 insertions, 0 deletions
diff --git a/openstack-console/src/main/java/com/woorea/openstack/console/CommandLineHelper.java b/openstack-console/src/main/java/com/woorea/openstack/console/CommandLineHelper.java
new file mode 100644
index 0000000..6e148ce
--- /dev/null
+++ b/openstack-console/src/main/java/com/woorea/openstack/console/CommandLineHelper.java
@@ -0,0 +1,71 @@
+package com.woorea.openstack.console;
+
+import java.util.StringTokenizer;
+import java.util.Vector;
+
+public class CommandLineHelper {
+
+	public static String[] parse(String input) {
+        if (input == null || input.length() == 0) {
+            //no command? no string
+            return new String[0];
+        }
+        // parse with a simple finite state machine
+
+        final int normal = 0;
+        final int inQuote = 1;
+        final int inDoubleQuote = 2;
+        int state = normal;
+        StringTokenizer tok = new StringTokenizer(input, "\"\' ", true);
+        Vector v = new Vector();
+        StringBuffer current = new StringBuffer();
+        boolean lastTokenHasBeenQuoted = false;
+
+        while (tok.hasMoreTokens()) {
+            String nextTok = tok.nextToken();
+            switch (state) {
+            case inQuote:
+                if ("\'".equals(nextTok)) {
+                    lastTokenHasBeenQuoted = true;
+                    state = normal;
+                } else {
+                    current.append(nextTok);
+                }
+                break;
+            case inDoubleQuote:
+                if ("\"".equals(nextTok)) {
+                    lastTokenHasBeenQuoted = true;
+                    state = normal;
+                } else {
+                    current.append(nextTok);
+                }
+                break;
+            default:
+                if ("\'".equals(nextTok)) {
+                    state = inQuote;
+                } else if ("\"".equals(nextTok)) {
+                    state = inDoubleQuote;
+                } else if (" ".equals(nextTok)) {
+                    if (lastTokenHasBeenQuoted || current.length() != 0) {
+                        v.addElement(current.toString());
+                        current = new StringBuffer();
+                    }
+                } else {
+                    current.append(nextTok);
+                }
+                lastTokenHasBeenQuoted = false;
+                break;
+            }
+        }
+        if (lastTokenHasBeenQuoted || current.length() != 0) {
+            v.addElement(current.toString());
+        }
+        if (state == inQuote || state == inDoubleQuote) {
+            throw new RuntimeException("unbalanced quotes in " + input);
+        }
+        String[] args = new String[v.size()];
+        v.copyInto(args);
+        return args;
+    }
+
+}