com.google.gdt.eclipse.designer.hosted.tdt.Utils.java Source code

Introduction

Here is the source code for com.google.gdt.eclipse.designer.hosted.tdt.Utils.java

Source

/*******************************************************************************
 * Copyright 2011 Google Inc. All Rights Reserved.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * 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.google.gdt.eclipse.designer.hosted.tdt;

import com.google.gdt.eclipse.designer.hosted.IModuleDescription;

import org.eclipse.wb.internal.core.utils.execution.ExecutionUtils;
import org.eclipse.wb.internal.core.utils.execution.RunnableObjectEx;

import org.apache.commons.lang.StringUtils;

import java.io.File;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * A copy of com.google.gdt.eclipse.designer.util.Utils due to build issues.
 * 
 * @author mitin_aa
 * @author scheglov_ke
 * @coverage gwtHosted
 */
final class Utils {
    static String getDevLibLocation(final IModuleDescription moduleDescription) {
        String userJarFolder = getUserJarFolder(moduleDescription);
        // try to find gwt-dev.jar in classpath
        {
            String devLocation = ExecutionUtils.runObject(new RunnableObjectEx<String>() {
                public String runObject() throws Exception {
                    List<String> locations = moduleDescription.getLocations();
                    return getDevJarLocation(locations);
                }
            });
            if (devLocation != null) {
                return devLocation;
            }
        }
        // Maven
        if (userJarFolder.contains("/gwt/gwt-user/")) {
            String gwtFolder = StringUtils.substringBefore(userJarFolder, "/gwt-user/");
            String versionString = StringUtils.substringAfter(userJarFolder, "/gwt/gwt-user/");
            String devFolder = gwtFolder + "/gwt-dev/" + versionString;
            String devFileName = "gwt-dev-" + versionString + ".jar";
            String devLocation = devFolder + "/" + devFileName;
            if (new File(devLocation).exists()) {
                return devLocation;
            }
        }
        // gwt-dev in same folder as gwt-user.jar
        String path = userJarFolder + "/gwt-dev.jar";
        if (new File(path).exists()) {
            return path;
        }
        // no gwt-dev
        return null;
    }

    private static String getUserJarFolder(IModuleDescription moduleDescription) {
        String userJarPath = getUserJarLocation(moduleDescription);
        if (userJarPath != null) {
            return StringUtils.substringBeforeLast(userJarPath, "/");
        } else {
            return null;
        }
    }

    private static String getUserJarLocation(final IModuleDescription moduleDescription) {
        return ExecutionUtils.runObject(new RunnableObjectEx<String>() {
            public String runObject() throws Exception {
                List<String> locations = moduleDescription.getLocations();
                // try to find gwt-user.jar by name
                String userJarEntry = getUserJarLocation(locations);
                if (userJarEntry != null) {
                    return userJarEntry;
                }
                // not found
                return null;
            }
        });
    }

    /**
     * Lookup for "gwt-user.jar" entry; it can be "gwt-user-1.5.3.jar", so use regexp.
     */
    private static String getUserJarLocation(List<String> locations) {
        Pattern p = Pattern.compile(".*gwt-user.*\\.jar");
        for (String location : locations) {
            Matcher m = p.matcher(location);
            if (m.matches()) {
                return location;
            }
        }
        return null;
    }

    /**
     * Lookup for "gwt-dev.jar" entry; it can be "gwt-dev-1.5.3.jar", so use regexp.
     */
    private static String getDevJarLocation(List<String> locations) {
        Pattern p = Pattern.compile(".*gwt-dev.*\\.jar");
        for (String location : locations) {
            Matcher m = p.matcher(location);
            if (m.matches()) {
                return location;
            }
        }
        return null;
    }
}