811a5a4a |
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 |