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/*
* Copyright (C) 2012 The Android Open Source 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 com.android.ant;
import com.android.sdklib.SdkConstants;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.util.DeweyDecimal;
import java.io.File;
/**
* Checks the Ant environment to make sure Android builds
* can run.
*
* No parameters are neeed.
*
*/
public class CheckEnvTask extends Task {
private final static String ANT_MIN_VERSION = "1.8.0";
@Override
public void execute() {
Project antProject = getProject();
// check the Ant version
DeweyDecimal version = getVersion(antProject);
DeweyDecimal atLeast = new DeweyDecimal(ANT_MIN_VERSION);
if (atLeast.isGreaterThan(version)) {
throw new BuildException(
"The Android Ant-based build system requires Ant " +
ANT_MIN_VERSION +
" or later. Current version is " +
version);
}
// get the SDK location
File sdkDir = TaskHelper.getSdkLocation(antProject);
// detect that the platform tools is there.
File platformTools = new File(sdkDir, SdkConstants.FD_PLATFORM_TOOLS);
if (platformTools.isDirectory() == false) {
throw new BuildException(String.format(
"SDK Platform Tools component is missing. " +
"Please install it with the SDK Manager (%1$s%2$c%3$s)",
SdkConstants.FD_TOOLS,
File.separatorChar,
SdkConstants.androidCmdName()));
}
// display SDK Tools revision
int toolsRevison = TaskHelper.getToolsRevision(sdkDir);
if (toolsRevison != -1) {
System.out.println("Android SDK Tools Revision " + toolsRevison);
System.out.println("Installed at " + sdkDir.getAbsolutePath());
}
}
/**
* Returns the Ant version as a {@link DeweyDecimal} object.
*
* This is based on the implementation of
* org.apache.tools.ant.taskdefs.condition.AntVersion.getVersion()
*
* @param antProject the current ant project.
* @return the ant version.
*/
private DeweyDecimal getVersion(Project antProject) {
char[] versionString = antProject.getProperty("ant.version").toCharArray();
StringBuilder sb = new StringBuilder();
boolean foundFirstDigit = false;
for (int i = 0; i < versionString.length; i++) {
if (Character.isDigit(versionString[i])) {
sb.append(versionString[i]);
foundFirstDigit = true;
}
if (versionString[i] == '.' && foundFirstDigit) {
sb.append(versionString[i]);
}
if (Character.isLetter(versionString[i]) && foundFirstDigit) {
break;
}
}
return new DeweyDecimal(sb.toString());
}
}
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