add a view for users to explore pub packages

editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/pub/PubPackageUtils.java

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/pub/PubPackageUtils.java
===================================================================
--- editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/pub/PubPackageUtils.java	(revision 0)
+++ editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/pub/PubPackageUtils.java	(revision 0)
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2013, the Dart project authors.
+ * 
+ * Licensed under the Eclipse Public License v1.0 (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.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.dart.tools.ui.internal.pub;
+
+import com.google.dart.tools.core.DartCore;
+import com.google.dart.tools.core.dart2js.ProcessRunner;
+import com.google.dart.tools.core.model.DartSdkManager;
+import com.google.dart.tools.core.pub.PubCacheManager;
+import com.google.dart.tools.core.pub.PubspecConstants;
+import com.google.dart.tools.core.pub.RunPubJob;
+import com.google.dart.tools.core.utilities.io.FileUtilities;
+import com.google.dart.tools.core.utilities.yaml.PubYamlUtils;
+
+import org.eclipse.core.runtime.IProgressMonitor;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Utilities for installing and copying pub packages
+ */
+public class PubPackageUtils {
+
+  /**
+   * Copy the contents of the directory and delete lock file
+   * 
+   * @param newProjectDir
+   * @param packageLoc
+   * @param monitor
+   */
+  public static void copyPackageContents(File newProjectDir, String packageLoc,
+      IProgressMonitor monitor) {
+    try {
+      monitor.subTask("Copy package contents");
+      FileUtilities.copyDirectoryContents(new File(packageLoc), newProjectDir);
+      // delete lock file so pub install runs again to create packages folder in web directory
+      FileUtilities.delete(new File(newProjectDir, DartCore.PUBSPEC_LOCK_FILE_NAME));
+    } catch (IOException e) {
+      DartCore.logError("New Application from package - Error while copying contents", e);
+    }
+    monitor.worked(1);
+  }
+
+  /**
+   * Create a pubspec file and set its contents
+   * 
+   * @param newProjectDir
+   * @param pubspec
+   * @param monitor
+   * @return
+   */
+  public static boolean createPubspec(File newProjectDir, String pubspec, IProgressMonitor monitor) {
+    monitor.subTask("Creating pubspec.yaml");
+    File pubspecFile = new File(newProjectDir, DartCore.PUBSPEC_FILE_NAME);
+    try {
+      FileUtilities.create(pubspecFile);
+    } catch (IOException e) {
+      DartCore.logError("New Application from package - Error while creating pubspec.yaml", e);
+      return false;
+    }
+    monitor.worked(1);
+    if (pubspecFile.exists()) {
+      try {
+        FileUtilities.setContents(pubspecFile, pubspec);
+      } catch (IOException e) {
+        DartCore.logError(
+            "New Application from package - Error while setting pubspec.yaml contents",
+            e);
+        return false;
+      }
+    }
+    return true;
+  }
+
+  /**
+   * Run pub cache list command and get the location of the package-version in pub cache. If version
+   * is not specified, return the latest version in pub cache.
+   * 
+   * @param monitor
+   * @param packageName
+   * @param version
+   * @return
+   */
+  @SuppressWarnings("unchecked")
+  public static String getPackageCacheDir(IProgressMonitor monitor, String packageName,
+      String version) {
+
+    HashMap<String, Object> pubCachePackages = PubCacheManager.getInstance().updateAndGetAllCachePackages();
+
+    if (pubCachePackages != null) {
+      Map<String, Object> packageMap = (Map<String, Object>) pubCachePackages.get(packageName);
+      if (packageMap != null) {
+        if (version != null) {
+          return ((Map<String, String>) packageMap.get(version)).get(PubspecConstants.LOCATION);
+        } else {
+          String[] list = packageMap.keySet().toArray(new String[packageMap.keySet().size()]);
+          list = PubYamlUtils.sortVersionArray(list);
+          String latestVersion = list[list.length - 1].toString();
+          return ((Map<String, String>) packageMap.get(latestVersion)).get(PubspecConstants.LOCATION);
+        }
+      }
+    }
+
+    return null;
+  }
+
+  /**
+   * Run pub install on the given directory
+   * 
+   * @param newProjectDir
+   * @param monitor
+   * @return
+   */
+  public static boolean runPubInstall(File newProjectDir, IProgressMonitor monitor) {
+
+    // TODO(keertip): move to RunPubJob
+    monitor.subTask("Running pub install");
+    ProcessBuilder builder = new ProcessBuilder();
+    builder.directory(newProjectDir);
+    builder.redirectErrorStream(true);
+    File pubFile = DartSdkManager.getManager().getSdk().getPubExecutable();
+
+    List<String> args = new ArrayList<String>();
+    if (DartCore.isMac()) {
+      args.add("/bin/bash");
+      args.add("--login");
+      args.add("-c");
+      args.add("\"" + pubFile.getAbsolutePath() + "\"" + " " + RunPubJob.INSTALL_COMMAND);
+    } else {
+      args.add(pubFile.getAbsolutePath());
+      args.add(RunPubJob.INSTALL_COMMAND);
+    }
+    builder.command(args);
+    ProcessRunner runner = new ProcessRunner(builder);
+    try {
+      runner.runSync(monitor);
+    } catch (IOException e) {
+      DartCore.logError("New Application from package - Running pub install", e);
+    }
+    monitor.worked(2);
+    if (runner.getExitCode() == 0) {
+      return true;
+    }
+    return false;
+  }
+
+}