Cores manager:

added post install script support
absolute path symlinks are converted to relative to the local folder and a warning is printed

arduino-core/src/cc/arduino/contributions/packages/ContributionInstaller.java

@@ -31,10 +31,20 @@ package cc.arduino.contributions.packages;
 import cc.arduino.utils.ArchiveExtractor;
 import cc.arduino.utils.MultiStepProgress;
 import cc.arduino.utils.Progress;
+import com.google.common.base.Predicate;
+import com.google.common.collect.Collections2;
+import org.apache.commons.exec.CommandLine;
+import org.apache.commons.exec.Executor;
+import processing.app.BaseNoGui;
 import processing.app.helpers.FileUtils;
+import processing.app.helpers.filefilters.OnlyDirs;
+import processing.app.tools.CollectStdOutStdErrExecutor;
 
+import java.io.ByteArrayOutputStream;
 import java.io.File;
+import java.io.IOException;
 import java.net.URL;
+import java.util.Collection;
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
@@ -131,6 +141,7 @@ public class ContributionInstaller {
       destFolder.mkdirs();
       assert toolContrib.getDownloadedFile() != null;
       ArchiveExtractor.extract(toolContrib.getDownloadedFile(), destFolder, 1);
+      executePostInstallScriptIfAny(destFolder);
       toolContrib.setInstalled(true);
       toolContrib.setInstalledFolder(destFolder);
       progress.stepDone();
@@ -151,6 +162,36 @@ public class ContributionInstaller {
     onProgress(progress);
   }
 
+  private void executePostInstallScriptIfAny(File folder) throws IOException {
+    Collection<File> postInstallScripts = Collections2.filter(BaseNoGui.getPlatform().postInstallScripts(folder), new Predicate<File>() {
+      @Override
+      public boolean apply(File file) {
+        return file.isFile() && file.exists() && file.canRead() && file.canExecute();
+      }
+    });
+
+    if (postInstallScripts.isEmpty()) {
+      String[] subfolders = folder.list(new OnlyDirs());
+      if (subfolders.length > 1) {
+        return;
+      }
+
+      executePostInstallScriptIfAny(new File(folder, subfolders[0]));
+      return;
+    }
+
+    File postInstallScript = postInstallScripts.iterator().next();
+
+    ByteArrayOutputStream stdout = new ByteArrayOutputStream();
+    ByteArrayOutputStream stderr = new ByteArrayOutputStream();
+    Executor executor = new CollectStdOutStdErrExecutor(stdout, stderr);
+
+    executor.execute(new CommandLine(postInstallScript));
+
+    System.out.write(stdout.toByteArray());
+    System.err.write(stderr.toByteArray());
+  }
+
   public void remove(ContributedPlatform platform) {
     FileUtils.recursiveDelete(platform.getInstalledFolder());
     platform.setInstalled(false);

arduino-core/src/cc/arduino/utils/ArchiveExtractor.java

@@ -36,11 +36,14 @@ import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
 import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream;
 import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
 import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
+import processing.app.I18n;
 
 import java.io.*;
 import java.util.HashMap;
 import java.util.Map;
 
+import static processing.app.I18n._;
+
 public class ArchiveExtractor {
 
   /**
@@ -183,7 +186,9 @@ public class ArchiveExtractor {
           // Symbolic links are referenced with relative paths
           outputLinkFile = new File(linkName);
           if (outputLinkFile.isAbsolute()) {
-            throw new IOException("Invalid archive: it contains a symbolic link with absolute path '" + outputLinkFile + "'");
+            System.err.println(I18n.format(_("Warning: file {0} links to an absolute path {1}, changing it to {2}"), outputFile, outputLinkFile, new File(outputLinkFile.getName())));
+            System.err.println();
+            outputLinkFile = new File(outputLinkFile.getName());
           }
         }
 

arduino-core/src/processing/app/Platform.java

@@ -229,4 +229,11 @@ public class Platform {
     Process process = Runtime.getRuntime().exec(new String[]{"chmod", "600", prefsFile.getAbsolutePath()}, null, null);
     process.waitFor();
   }
+
+  public List<File> postInstallScripts(File folder) {
+    List<File> scripts = new LinkedList<File>();
+    scripts.add(new File(folder, "install_script.sh"));
+    scripts.add(new File(folder, "post_install.sh"));
+    return scripts;
+  }
 }

arduino-core/src/processing/app/windows/Platform.java

@@ -38,6 +38,8 @@ import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
 import java.io.UnsupportedEncodingException;
+import java.util.LinkedList;
+import java.util.List;
 import java.util.Map;
 
 
@@ -354,4 +356,10 @@ public class Platform extends processing.app.Platform {
   public void fixPrefsFilePermissions(File prefsFile) throws IOException {
     //noop
   }
+
+  public List<File> postInstallScripts(File folder) {
+    List<File> scripts = new LinkedList<File>();
+    scripts.add(new File(folder, "post_install.bat"));
+    return scripts;
+  }
 }