| 1 | package org.openintents.filemanager.util;\r |
| 2 | \r |
| 3 | import android.app.ProgressDialog;\r |
| 4 | import android.content.Intent;\r |
| 5 | import android.os.AsyncTask;\r |
| 6 | import android.util.Log;\r |
| 7 | import android.widget.Toast;\r |
| 8 | import org.openintents.filemanager.FileManagerActivity;\r |
| 9 | import org.openintents.filemanager.R;\r |
| 10 | import org.openintents.intents.FileManagerIntents;\r |
| 11 | \r |
| 12 | import java.io.*;\r |
| 13 | import java.util.ArrayList;\r |
| 14 | import java.util.List;\r |
| 15 | import java.util.zip.ZipEntry;\r |
| 16 | import java.util.zip.ZipOutputStream;\r |
| 17 | \r |
| 18 | public class CompressManager {\r |
| 19 | /**\r |
| 20 | * TAG for log messages.\r |
| 21 | */\r |
| 22 | static final String TAG = "CompressManager";\r |
| 23 | \r |
| 24 | private static final int BUFFER_SIZE = 1024;\r |
| 25 | private FileManagerActivity activity;\r |
| 26 | private ProgressDialog progressDialog;\r |
| 27 | private int fileCount;\r |
| 28 | private String fileOut;\r |
| 29 | \r |
| 30 | public CompressManager(FileManagerActivity activity) {\r |
| 31 | this.activity = activity;\r |
| 32 | }\r |
| 33 | \r |
| 34 | public void compress(File f, String out) {\r |
| 35 | List <File>list = new ArrayList<File>();\r |
| 36 | list.add(f);\r |
| 37 | compress(list, out);\r |
| 38 | } \r |
| 39 | \r |
| 40 | public void compress(List<File> list, String out) {\r |
| 41 | if (list.isEmpty()){\r |
| 42 | Log.v(TAG, "couldn't compress empty file list");\r |
| 43 | return;\r |
| 44 | }\r |
| 45 | this.fileOut = list.get(0).getParent()+File.separator+out;\r |
| 46 | fileCount=0;\r |
| 47 | for (File f: list){\r |
| 48 | fileCount += FileUtils.getFileCount(f);\r |
| 49 | }\r |
| 50 | new CompressTask().execute(list);\r |
| 51 | }\r |
| 52 | \r |
| 53 | private class CompressTask extends AsyncTask<Object, Void, Integer> {\r |
| 54 | private static final int success = 0;\r |
| 55 | private static final int error = 1;\r |
| 56 | private ZipOutputStream zos;\r |
| 57 | \r |
| 58 | /**\r |
| 59 | * count of compressed file to update the progress bar\r |
| 60 | */\r |
| 61 | private int isCompressed = 0;\r |
| 62 | \r |
| 63 | /**\r |
| 64 | * Recursively compress file or directory\r |
| 65 | * @returns 0 if successful, error value otherwise.\r |
| 66 | */\r |
| 67 | private void compressFile(File file, String path) throws IOException {\r |
| 68 | if (!file.isDirectory()){\r |
| 69 | byte[] buf = new byte[BUFFER_SIZE];\r |
| 70 | int len;\r |
| 71 | FileInputStream in = new FileInputStream(file);\r |
| 72 | zos.putNextEntry(new ZipEntry(path + "/" + file.getName()));\r |
| 73 | while ((len = in.read(buf)) > 0) {\r |
| 74 | zos.write(buf, 0, len);\r |
| 75 | }\r |
| 76 | in.close();\r |
| 77 | return;\r |
| 78 | }\r |
| 79 | if (file.list() == null){\r |
| 80 | return;\r |
| 81 | }\r |
| 82 | for (String fileName: file.list()){\r |
| 83 | File f = new File(file.getAbsolutePath()+File.separator+fileName);\r |
| 84 | compressFile(f, path + File.separator + file.getName());\r |
| 85 | isCompressed++;\r |
| 86 | progressDialog.setProgress((isCompressed * 100)/ fileCount);\r |
| 87 | }\r |
| 88 | }\r |
| 89 | \r |
| 90 | @Override\r |
| 91 | protected void onPreExecute() {\r |
| 92 | FileOutputStream out = null;\r |
| 93 | progressDialog = new ProgressDialog(activity);\r |
| 94 | progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);\r |
| 95 | progressDialog.setMessage(activity.getResources().getString(R.string.compressing));\r |
| 96 | progressDialog.show();\r |
| 97 | progressDialog.setProgress(0);\r |
| 98 | try {\r |
| 99 | out = new FileOutputStream(new File(fileOut));\r |
| 100 | zos = new ZipOutputStream(new BufferedOutputStream(out));\r |
| 101 | } catch (FileNotFoundException e) {\r |
| 102 | Log.e(TAG, "error while creating ZipOutputStream");\r |
| 103 | }\r |
| 104 | }\r |
| 105 | \r |
| 106 | @Override\r |
| 107 | protected Integer doInBackground(Object... params) {\r |
| 108 | if (zos == null){\r |
| 109 | return error;\r |
| 110 | }\r |
| 111 | List<File> list = (List<File>) params[0]; \r |
| 112 | for (File file:list){\r |
| 113 | try {\r |
| 114 | compressFile(file, "");\r |
| 115 | } catch (IOException e) {\r |
| 116 | Log.e(TAG, "Error while compressing", e);\r |
| 117 | return error;\r |
| 118 | }\r |
| 119 | }\r |
| 120 | return success;\r |
| 121 | }\r |
| 122 | \r |
| 123 | @Override\r |
| 124 | protected void onPostExecute(Integer result) {\r |
| 125 | try {\r |
| 126 | zos.flush();\r |
| 127 | zos.close();\r |
| 128 | } catch (IOException e) {\r |
| 129 | Log.e(TAG, "error while closing zos", e);\r |
| 130 | }\r |
| 131 | progressDialog.cancel();\r |
| 132 | if (result == error){\r |
| 133 | Toast.makeText(activity, R.string.compressing_error, Toast.LENGTH_SHORT).show();\r |
| 134 | } else if (result == success){\r |
| 135 | Toast.makeText(activity, R.string.compressing_success, Toast.LENGTH_SHORT).show();\r |
| 136 | }\r |
| 137 | \r |
| 138 | if (activity.getIntent().getAction().equals(FileManagerIntents.ACTION_MULTI_SELECT)){\r |
| 139 | Intent intent = activity.getIntent();\r |
| 140 | activity.setResult(activity.RESULT_OK, intent);\r |
| 141 | activity.finish();\r |
| 142 | } else {\r |
| 143 | activity.refreshList();\r |
| 144 | }\r |
| 145 | }\r |
| 146 | }\r |
| 147 | }\r |