811a5a4a |
1 | package org.openintents.filemanager;\r |
2 | \r |
3 | import java.io.File;\r |
4 | import java.io.FileNotFoundException;\r |
5 | import java.io.IOException;\r |
6 | \r |
7 | import org.openintents.filemanager.util.MimeTypeParser;\r |
8 | import org.openintents.filemanager.util.MimeTypes;\r |
9 | import org.xmlpull.v1.XmlPullParserException;\r |
10 | \r |
11 | import android.content.ContentProvider;\r |
12 | import android.content.ContentValues;\r |
13 | import android.content.Context;\r |
14 | import android.content.pm.PackageManager.NameNotFoundException;\r |
15 | import android.content.res.XmlResourceParser;\r |
16 | import android.database.Cursor;\r |
17 | import android.database.MatrixCursor;\r |
18 | import android.net.Uri;\r |
19 | import android.os.ParcelFileDescriptor;\r |
20 | import android.provider.MediaStore;\r |
21 | import android.util.Log;\r |
22 | \r |
23 | public class FileManagerProvider extends ContentProvider {\r |
24 | \r |
25 | static final String FILE_PROVIDER_PREFIX = "content://org.openintents.filemanager";\r |
26 | private static final String TAG = "FileManagerProvider";\r |
27 | public static final String AUTHORITY = "org.openintents.filemanager";\r |
28 | private MimeTypes mMimeTypes;\r |
29 | \r |
30 | @Override\r |
31 | public boolean onCreate() {\r |
32 | getMimeTypes();\r |
33 | return true;\r |
34 | }\r |
35 | \r |
36 | private void getMimeTypes() {\r |
37 | Context ctx = getContext();\r |
38 | MimeTypeParser mtp = null;\r |
39 | try {\r |
40 | mtp = new MimeTypeParser(ctx, ctx.getPackageName());\r |
41 | } catch (NameNotFoundException e) {\r |
42 | //Should never get here\r |
43 | }\r |
44 | XmlResourceParser in = \r |
45 | getContext().getResources().getXml(R.xml.mimetypes);\r |
46 | \r |
47 | try {\r |
48 | mMimeTypes = mtp.fromXmlResource(in);\r |
49 | } catch (XmlPullParserException e) {\r |
50 | Log.e(TAG, "PreselectedChannelsActivity: XmlPullParserException", e);\r |
51 | throw new RuntimeException(\r |
52 | "PreselectedChannelsActivity: XmlPullParserException");\r |
53 | } catch (IOException e) {\r |
54 | Log.e(TAG, "PreselectedChannelsActivity: IOException", e);\r |
55 | throw new RuntimeException(\r |
56 | "PreselectedChannelsActivity: IOException");\r |
57 | }\r |
58 | }\r |
59 | \r |
60 | @Override\r |
61 | public int delete(Uri uri, String s, String[] as) {\r |
62 | // not supported\r |
63 | return 0;\r |
64 | }\r |
65 | \r |
66 | @Override\r |
67 | public String getType(Uri uri) {\r |
68 | // return file extension (uri.lastIndexOf("."))\r |
69 | return mMimeTypes.getMimeType(uri.toString());\r |
70 | }\r |
71 | \r |
72 | @Override\r |
73 | public Uri insert(Uri uri, ContentValues contentvalues) {\r |
74 | // not supported\r |
75 | return null;\r |
76 | }\r |
77 | \r |
78 | @Override\r |
79 | public Cursor query(Uri uri, String[] projection, String s, \r |
80 | String[] as1, String s1) {\r |
81 | if (uri.toString().startsWith(FILE_PROVIDER_PREFIX)) {\r |
82 | if (projection == null || projection.length == 0) {\r |
83 | // Standard projection including all supported rows\r |
84 | projection = new String [] {\r |
85 | MediaStore.MediaColumns.DATA,\r |
86 | MediaStore.MediaColumns.MIME_TYPE,\r |
87 | MediaStore.MediaColumns.DISPLAY_NAME,\r |
88 | MediaStore.MediaColumns.SIZE};\r |
89 | } \r |
90 | \r |
91 | MatrixCursor c = new MatrixCursor(projection);\r |
92 | MatrixCursor.RowBuilder row = c.newRow();\r |
93 | \r |
94 | // data = absolute path to file\r |
95 | String data = uri.getPath();\r |
96 | \r |
97 | int fromIndex = data.lastIndexOf(File.separatorChar) + 1;\r |
98 | if (fromIndex >= data.length()) {\r |
99 | // Last character was '/' or data is empty, so no file name \r |
100 | // was specified and we don't want to raise an \r |
101 | // IndexOutOfBoundsException\r |
102 | throw new RuntimeException("No file name specified: ".concat(data));\r |
103 | }\r |
104 | \r |
105 | // According to Android docs, DISPLAY_NAME should be\r |
106 | // the last segment of Uri\r |
107 | String displayName = \r |
108 | (fromIndex > 0) ? data.substring(fromIndex) : data;\r |
109 | \r |
110 | String mimeType = mMimeTypes.getMimeType(data);\r |
111 | \r |
112 | long size = -1;\r |
113 | File file = new File(data); \r |
114 | if (file.exists() && file.isFile()) {\r |
115 | size = file.length();\r |
116 | }\r |
117 | \r |
118 | for (String col : projection) {\r |
119 | if (col.equals(MediaStore.MediaColumns.DATA)) {\r |
120 | row.add(data);\r |
121 | } else if (col.equals(MediaStore.MediaColumns.MIME_TYPE)) {\r |
122 | row.add(mimeType);\r |
123 | } else if (col.equals(MediaStore.MediaColumns.DISPLAY_NAME)) {\r |
124 | row.add(displayName);\r |
125 | } else if (col.equals(MediaStore.MediaColumns.SIZE)) {\r |
126 | if (size >= 0)\r |
127 | row.add(size);\r |
128 | else {\r |
129 | // According to Android docs for unknown size.\r |
130 | // Standard getLong() won't throw exception and\r |
131 | // value will be 0.\r |
132 | row.add(null);\r |
133 | }\r |
134 | } else {\r |
135 | // Unsupported or unknown columns are filled up with null\r |
136 | row.add(null);\r |
137 | }\r |
138 | }\r |
139 | \r |
140 | return c;\r |
141 | } else {\r |
142 | throw new RuntimeException("Unsupported uri");\r |
143 | }\r |
144 | }\r |
145 | \r |
146 | @Override\r |
147 | public ParcelFileDescriptor openFile(Uri uri, String mode)\r |
148 | throws FileNotFoundException {\r |
149 | if (uri.toString().startsWith(FILE_PROVIDER_PREFIX)) {\r |
150 | int m = ParcelFileDescriptor.MODE_READ_ONLY;\r |
151 | if (mode.equalsIgnoreCase("rw"))\r |
152 | m = ParcelFileDescriptor.MODE_READ_WRITE;\r |
153 | File f = new File(uri.getPath());\r |
154 | ParcelFileDescriptor pfd = ParcelFileDescriptor.open(f, m);\r |
155 | return pfd;\r |
156 | } else {\r |
157 | throw new FileNotFoundException ("Unsupported uri: " + uri.toString());\r |
158 | }\r |
159 | }\r |
160 | \r |
161 | @Override\r |
162 | public int update(Uri uri, ContentValues contentvalues, String s, String[] as) {\r |
163 | // not supported\r |
164 | return 0;\r |
165 | }\r |
166 | \r |
167 | }\r |