1 files changed, 153 insertions, 0 deletions
diff --git a/src/main/java/net/sf/antcontrib/cpptasks/types/UndefineArgument.java b/src/main/java/net/sf/antcontrib/cpptasks/types/UndefineArgument.java
new file mode 100644
index 0000000..aa958ef
--- /dev/null
+++ b/src/main/java/net/sf/antcontrib/cpptasks/types/UndefineArgument.java
@@ -0,0 +1,153 @@
+/*
+ * 
+ * Copyright 2001-2004 The Ant-Contrib project
+ *
+ *  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.
+ */
+package net.sf.antcontrib.cpptasks.types;
+import java.util.Vector;
+
+import net.sf.antcontrib.cpptasks.CUtil;
+
+import org.apache.tools.ant.BuildException;
+/**
+ * Preprocessor macro undefinition.
+ * 
+ * @author Mark A Russell <a
+ *         href="mailto:mark_russell@csgsystems.com">mark_russell@csg_systems.com
+ *         </a>
+ */
+public class UndefineArgument {
+    /**
+     * This method returns an array of UndefineArgument and DefineArgument's by
+     * merging a base list with an override list.
+     * 
+     * Any define in the base list with a name that appears in the override
+     * list is suppressed. All entries in the override list are preserved
+     *  
+     */
+    public static UndefineArgument[] merge(UndefineArgument[] base,
+            UndefineArgument[] override) {
+        if (base.length == 0) {
+            UndefineArgument[] overrideClone = (UndefineArgument[]) override
+                    .clone();
+            return overrideClone;
+        }
+        if (override.length == 0) {
+            UndefineArgument[] baseClone = (UndefineArgument[]) base.clone();
+            return baseClone;
+        }
+        Vector unduplicated = new Vector(base.length);
+        for (int i = 0; i < base.length; i++) {
+            UndefineArgument current = base[i];
+            String currentName = current.getName();
+            boolean match = false;
+            if (currentName == null) {
+                match = true;
+            } else {
+                for (int j = 0; j < override.length; j++) {
+                    UndefineArgument over = override[j];
+                    String overName = over.getName();
+                    if (overName != null && overName.equals(currentName)) {
+                        match = true;
+                        break;
+                    }
+                }
+            }
+            if (!match) {
+                unduplicated.addElement(current);
+            }
+        }
+        UndefineArgument[] combined = new UndefineArgument[unduplicated.size()
+                + override.length];
+        unduplicated.copyInto(combined);
+        int offset = unduplicated.size();
+        for (int i = 0; i < override.length; i++) {
+            combined[offset + i] = override[i];
+        }
+        return combined;
+    }
+    private boolean define = false;
+    private String ifCond;
+    private String name;
+    private String unlessCond;
+    public UndefineArgument() {
+    }
+    protected UndefineArgument(boolean isDefine) {
+        this.define = isDefine;
+    }
+    public void execute() throws org.apache.tools.ant.BuildException {
+        throw new org.apache.tools.ant.BuildException(
+                "Not an actual task, but looks like one for documentation purposes");
+    }
+    /** Returns the name of the define */
+    public final String getName() {
+        return name;
+    }
+    /** Returns the value of the define */
+    public String getValue() {
+        return null;
+    }
+    /**
+     * Returns true if the define's if and unless conditions (if any) are
+     * satisfied.
+     * 
+     * @exception BuildException
+     *                throws build exception if name is not set
+     */
+    public final boolean isActive(org.apache.tools.ant.Project p)
+            throws BuildException {
+        if (name == null) {
+            throw new BuildException("<define> is missing name attribute");
+        }
+        return CUtil.isActive(p, ifCond, unlessCond);
+    }
+    /** Returns true if this is a define, false if an undefine. */
+    public final boolean isDefine() {
+        return define;
+    }
+    /**
+     * Sets the property name for the 'if' condition.
+     * 
+     * The define will be ignored unless the property is defined.
+     * 
+     * The value of the property is insignificant, but values that would imply
+     * misinterpretation ("false", "no") will throw an exception when
+     * evaluated.
+     * 
+     * @param propName
+     *            property name
+     */
+    public final void setIf(String propName) {
+        ifCond = propName;
+    }
+    /** Set the name attribute */
+    public final void setName(String name) {
+        this.name = name;
+    }
+    /**
+     * Set the property name for the 'unless' condition.
+     * 
+     * If named property is set, the define will be ignored.
+     * 
+     * The value of the property is insignificant, but values that would imply
+     * misinterpretation ("false", "no") of the behavior will throw an
+     * exception when evaluated.
+     * 
+     * @param propName
+     *            name of property
+     */
+    public final void setUnless(String propName) {
+        unlessCond = propName;
+    }
+}