| 1 | package org.openintents.filemanager.util;\r |
| 2 | \r |
| 3 | import android.app.ProgressDialog;\r |
| 4 | import android.os.AsyncTask;\r |
| 5 | import android.util.Log;\r |
| 6 | import android.widget.Toast;\r |
| 7 | import org.openintents.filemanager.FileManagerActivity;\r |
| 8 | import org.openintents.filemanager.R;\r |
| 9 | \r |
| 10 | import java.io.*;\r |
| 11 | import java.util.Enumeration;\r |
| 12 | import java.util.zip.ZipEntry;\r |
| 13 | import java.util.zip.ZipFile;\r |
| 14 | \r |
| 15 | public class ExtractManager {\r |
| 16 | /**\r |
| 17 | * TAG for log messages.\r |
| 18 | */\r |
| 19 | static final String TAG = "ExtractManager";\r |
| 20 | \r |
| 21 | private static final int BUFFER_SIZE = 1024;\r |
| 22 | private FileManagerActivity activity;\r |
| 23 | private ProgressDialog progressDialog;\r |
| 24 | \r |
| 25 | public ExtractManager(FileManagerActivity activity) {\r |
| 26 | this.activity = activity;\r |
| 27 | }\r |
| 28 | \r |
| 29 | public void extract(File f, String destinationPath) {\r |
| 30 | new ExtractTask().execute(f, destinationPath);\r |
| 31 | }\r |
| 32 | \r |
| 33 | private class ExtractTask extends AsyncTask<Object, Void, Integer> {\r |
| 34 | private static final int success = 0;\r |
| 35 | private static final int error = 1;\r |
| 36 | \r |
| 37 | /**\r |
| 38 | * count of extracted files to update the progress bar\r |
| 39 | */\r |
| 40 | private int isExtracted = 0;\r |
| 41 | \r |
| 42 | /**\r |
| 43 | * Recursively extract file or directory\r |
| 44 | */\r |
| 45 | public boolean extract(File archive, String destinationPath) {\r |
| 46 | try {\r |
| 47 | ZipFile zipfile = new ZipFile(archive);\r |
| 48 | int fileCount = zipfile.size();\r |
| 49 | for (Enumeration e = zipfile.entries(); e.hasMoreElements();) {\r |
| 50 | ZipEntry entry = (ZipEntry) e.nextElement();\r |
| 51 | unzipEntry(zipfile, entry, destinationPath);\r |
| 52 | isExtracted++;\r |
| 53 | progressDialog.setProgress((isExtracted * 100)/ fileCount);\r |
| 54 | }\r |
| 55 | return true;\r |
| 56 | } catch (Exception e) {\r |
| 57 | Log.e(TAG, "Error while extracting file " + archive, e);\r |
| 58 | return false;\r |
| 59 | }\r |
| 60 | } \r |
| 61 | \r |
| 62 | private void createDir(File dir) {\r |
| 63 | if (dir.exists()) {\r |
| 64 | return;\r |
| 65 | }\r |
| 66 | Log.i(TAG, "Creating dir " + dir.getName());\r |
| 67 | if (!dir.mkdirs()) {\r |
| 68 | throw new RuntimeException("Can not create dir " + dir);\r |
| 69 | }\r |
| 70 | } \r |
| 71 | \r |
| 72 | private void unzipEntry(ZipFile zipfile, ZipEntry entry,\r |
| 73 | String outputDir) throws IOException {\r |
| 74 | if (entry.isDirectory()) {\r |
| 75 | createDir(new File(outputDir, entry.getName()));\r |
| 76 | return;\r |
| 77 | }\r |
| 78 | File outputFile = new File(outputDir, entry.getName());\r |
| 79 | if (!outputFile.getParentFile().exists()) {\r |
| 80 | createDir(outputFile.getParentFile());\r |
| 81 | }\r |
| 82 | Log.i(TAG, "Extracting: " + entry);\r |
| 83 | BufferedInputStream inputStream = new BufferedInputStream(zipfile.getInputStream(entry));\r |
| 84 | BufferedOutputStream outputStream = new BufferedOutputStream(new FileOutputStream(outputFile));\r |
| 85 | try {\r |
| 86 | int len;\r |
| 87 | byte buf[] = new byte[BUFFER_SIZE];\r |
| 88 | while ((len = inputStream.read(buf)) > 0) {\r |
| 89 | outputStream.write(buf, 0, len);\r |
| 90 | }\r |
| 91 | } finally {\r |
| 92 | outputStream.close();\r |
| 93 | inputStream.close();\r |
| 94 | }\r |
| 95 | }\r |
| 96 | \r |
| 97 | @Override\r |
| 98 | protected void onPreExecute() {\r |
| 99 | progressDialog = new ProgressDialog(activity);\r |
| 100 | progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);\r |
| 101 | progressDialog.setMessage(activity.getResources().getString(R.string.extracting));\r |
| 102 | progressDialog.show();\r |
| 103 | progressDialog.setProgress(0);\r |
| 104 | isExtracted = 0;\r |
| 105 | }\r |
| 106 | \r |
| 107 | @Override\r |
| 108 | protected Integer doInBackground(Object... params) {\r |
| 109 | File f= (File) params[0];\r |
| 110 | String destination = (String) params[1];\r |
| 111 | boolean result = extract(f, destination);\r |
| 112 | return result ? success : error;\r |
| 113 | }\r |
| 114 | \r |
| 115 | @Override\r |
| 116 | protected void onPostExecute(Integer result) {\r |
| 117 | progressDialog.cancel();\r |
| 118 | if (result == error){\r |
| 119 | Toast.makeText(activity, R.string.extracting_error, Toast.LENGTH_SHORT).show();\r |
| 120 | } else if (result == success){\r |
| 121 | Toast.makeText(activity, R.string.extracting_success, Toast.LENGTH_SHORT).show();\r |
| 122 | }\r |
| 123 | activity.refreshList();\r |
| 124 | }\r |
| 125 | }\r |
| 126 | }\r |