/* | |
* | |
* 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; | |
} | |
} |