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/* *******************************************************************
* Copyright (c) 1999-2001 Xerox Corporation,
* 2002 Palo Alto Research Center, Incorporated (PARC).
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Common Public License v1.0
* which accompanies this distribution and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* Xerox/PARC initial implementation
* ******************************************************************/
package org.aspectj.internal.tools.ant.taskdefs;
import org.apache.tools.ant.*;
import java.util.*;
public abstract class ConditionalTask extends Task {
public final static String TRUE = "true";
private List ifs;
protected List ifs() {
return ifs != null ? ifs : (ifs = new Vector());
}
public If createIf() {
If i = new If();
ifs().add(i);
return i;
}
public If createIf(String name, String equals, boolean strict) {
If i = createIf();
i.setName(name);
i.setEquals(equals);
i.setStrict(strict);
return i;
}
public If createIf(String name, String equals) {
return createIf(name, equals, false);
}
public If createIf(String name) {
return createIf(name, TRUE, false);
}
public If createIf(String name, boolean strict) {
return createIf(name, TRUE, strict);
}
public void setIfs(String ifs) {
StringTokenizer tok = new StringTokenizer(ifs, ",;: ", false);
while (tok.hasMoreTokens()) {
String next = tok.nextToken();
int iequals = next.lastIndexOf("=");
String equals;
String name;
boolean strict;
If i = createIf();
if (iequals != -1) {
name = next.substring(0, iequals);
equals = next.substring(iequals + 1);
strict = true;
} else {
name = next.substring(0);
equals = TRUE;
strict = false;
}
i.setName(name);
i.setEquals(equals);
i.setStrict(strict);
}
}
public void setIf(String ifStr) {
setIfs(ifStr);
}
public class If {
public If() {
this(null, null);
}
public If(String name) {
this(name, TRUE);
}
public If(String name, String equals) {
setName(name);
setEquals(equals);
}
private String name;
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
private String equals;
public void setEquals(String equals) {
this.equals = equals;
}
public String getEquals() {
return equals;
}
private boolean strict = false;
public void setStrict(boolean strict) {
this.strict = strict;
}
public boolean isStrict() {
return strict;
}
public boolean isOk(String prop) {
return isOk(prop, isStrict());
}
//XXX Need a better boolean parser
public boolean isOk(String prop, boolean isStrict) {
if (isStrict) {
return prop != null && prop.equals(getEquals());
} else {
if (isOk(prop, true)) {
return true;
}
if (prop == null || isFalse(getEquals())) {
return true;
}
if ( (isTrue(getEquals()) && isTrue(prop)) ||
(isFalse(getEquals()) && isFalse(prop)) ) {
return true;
}
return false;
}
}
private boolean isFalse(String prop) {
return isOneOf(prop, falses) || isOneOf(prop, complement(trues));
}
private boolean isTrue(String prop) {
return isOneOf(prop, trues) || isOneOf(prop, complement(falses));
}
private boolean isOneOf(String prop, String[] strings) {
for (int i = 0; i < strings.length; i++) {
if (strings[i].equals(prop)) {
return true;
}
}
return false;
}
private String[] complement(String[] strings) {
for (int i = 0; i < strings.length; i++) {
strings[i] = "!" + strings[i];
}
return strings;
}
}
final static String[] falses = { "false", "no" };
final static String[] trues = { "true", "yes" };
protected boolean checkIfs() {
return getFalses().size() == 0;
}
protected List getFalses() {
Iterator iter = ifs().iterator();
List result = new Vector();
while (iter.hasNext()) {
If next = (If) iter.next();
String name = next.getName();
String prop = project.getProperty(name);
if (prop == null) {
prop = project.getUserProperty(name);
}
if (!next.isOk(prop)) {
result.add(name);
}
}
return result;
}
public abstract void execute() throws BuildException;
}
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