diff options
Diffstat (limited to 'build/android/src/main/java/net.minetest.minetest/MinetestAssetCopy.java')
| -rw-r--r-- | build/android/src/main/java/net.minetest.minetest/MinetestAssetCopy.java | 416 |
1 files changed, 416 insertions, 0 deletions
diff --git a/build/android/src/main/java/net.minetest.minetest/MinetestAssetCopy.java b/build/android/src/main/java/net.minetest.minetest/MinetestAssetCopy.java new file mode 100644 index 000000000..eb92acb63 --- /dev/null +++ b/build/android/src/main/java/net.minetest.minetest/MinetestAssetCopy.java @@ -0,0 +1,416 @@ +package net.minetest.minetest; + +import java.io.BufferedReader; +import java.io.File; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.OutputStream; +import java.util.Vector; +import java.util.Iterator; +import java.lang.Object; + +import android.app.Activity; +import android.content.res.AssetFileDescriptor; + +import android.os.AsyncTask; +import android.os.Bundle; +import android.os.Environment; +import android.util.Log; +import android.view.Display; +import android.widget.ProgressBar; +import android.widget.TextView; +import android.graphics.Rect; +import android.graphics.Paint; +import android.text.TextPaint; + +public class MinetestAssetCopy extends Activity +{ + @Override + public void onCreate(Bundle savedInstanceState) + { + super.onCreate(savedInstanceState); + + setContentView(R.layout.assetcopy); + + m_ProgressBar = (ProgressBar) findViewById(R.id.progressBar1); + m_Filename = (TextView) findViewById(R.id.textView1); + + Display display = getWindowManager().getDefaultDisplay(); + m_ProgressBar.getLayoutParams().width = (int) (display.getWidth() * 0.8); + m_ProgressBar.invalidate(); + + /* check if there's already a copy in progress and reuse in case it is*/ + MinetestAssetCopy prevActivity = + (MinetestAssetCopy) getLastNonConfigurationInstance(); + if(prevActivity!= null) { + m_AssetCopy = prevActivity.m_AssetCopy; + } + else { + m_AssetCopy = new copyAssetTask(); + m_AssetCopy.execute(); + } + } + + /* preserve asset copy background task to prevent restart of copying */ + /* this way of doing it is not recommended for latest android version */ + /* but the recommended way isn't available on android 2.x */ + public Object onRetainNonConfigurationInstance() + { + return this; + } + + ProgressBar m_ProgressBar; + TextView m_Filename; + + copyAssetTask m_AssetCopy; + + private class copyAssetTask extends AsyncTask<String, Integer, String> + { + private long getFullSize(String filename) + { + long size = 0; + try { + InputStream src = getAssets().open(filename); + byte[] buf = new byte[4096]; + + int len = 0; + while ((len = src.read(buf)) > 0) + { + size += len; + } + } + catch (IOException e) + { + e.printStackTrace(); + } + return size; + } + + @Override + protected String doInBackground(String... files) + { + m_foldernames = new Vector<String>(); + m_filenames = new Vector<String>(); + m_tocopy = new Vector<String>(); + m_asset_size_unknown = new Vector<String>(); + String baseDir = + Environment.getExternalStorageDirectory().getAbsolutePath() + + "/"; + + + // prepare temp folder + File TempFolder = new File(baseDir + "Minetest/tmp/"); + + if (!TempFolder.exists()) + { + TempFolder.mkdir(); + } + else { + File[] todel = TempFolder.listFiles(); + + for(int i=0; i < todel.length; i++) + { + Log.v("MinetestAssetCopy","deleting: " + todel[i].getAbsolutePath()); + todel[i].delete(); + } + } + + // add a .nomedia file + try { + OutputStream dst = new FileOutputStream(baseDir + "Minetest/.nomedia"); + dst.close(); + } catch (IOException e) { + Log.e("MinetestAssetCopy","Failed to create .nomedia file"); + e.printStackTrace(); + } + + + // build lists from prepared data + BuildFolderList(); + BuildFileList(); + + // scan filelist + ProcessFileList(); + + // doing work + m_copy_started = true; + m_ProgressBar.setMax(m_tocopy.size()); + + for (int i = 0; i < m_tocopy.size(); i++) + { + try + { + String filename = m_tocopy.get(i); + publishProgress(i); + + boolean asset_size_unknown = false; + long filesize = -1; + + if (m_asset_size_unknown.contains(filename)) + { + File testme = new File(baseDir + "/" + filename); + + if(testme.exists()) + { + filesize = testme.length(); + } + asset_size_unknown = true; + } + + InputStream src; + try + { + src = getAssets().open(filename); + } catch (IOException e) { + Log.e("MinetestAssetCopy","Copying file: " + filename + " FAILED (not in assets)"); + e.printStackTrace(); + continue; + } + + // Transfer bytes from in to out + byte[] buf = new byte[1*1024]; + int len = src.read(buf, 0, 1024); + + /* following handling is crazy but we need to deal with */ + /* compressed assets.Flash chips limited livetime due to */ + /* write operations, we can't allow large files to destroy */ + /* users flash. */ + if (asset_size_unknown) + { + if ( (len > 0) && (len < buf.length) && (len == filesize)) + { + src.close(); + continue; + } + + if (len == buf.length) + { + src.close(); + long size = getFullSize(filename); + if ( size == filesize) + { + continue; + } + src = getAssets().open(filename); + len = src.read(buf, 0, 1024); + } + } + if (len > 0) + { + int total_filesize = 0; + OutputStream dst; + try + { + dst = new FileOutputStream(baseDir + "/" + filename); + } catch (IOException e) { + Log.e("MinetestAssetCopy","Copying file: " + baseDir + + "/" + filename + " FAILED (couldn't open output file)"); + e.printStackTrace(); + src.close(); + continue; + } + dst.write(buf, 0, len); + total_filesize += len; + + while ((len = src.read(buf)) > 0) + { + dst.write(buf, 0, len); + total_filesize += len; + } + + dst.close(); + Log.v("MinetestAssetCopy","Copied file: " + + m_tocopy.get(i) + " (" + total_filesize + + " bytes)"); + } + else if (len < 0) + { + Log.e("MinetestAssetCopy","Copying file: " + + m_tocopy.get(i) + " failed, size < 0"); + } + src.close(); + } + catch (IOException e) + { + Log.e("MinetestAssetCopy","Copying file: " + + m_tocopy.get(i) + " failed"); + e.printStackTrace(); + } + } + return ""; + } + + + /** + * update progress bar + */ + protected void onProgressUpdate(Integer... progress) + { + + if (m_copy_started) + { + boolean shortened = false; + String todisplay = m_tocopy.get(progress[0]); + m_ProgressBar.setProgress(progress[0]); + m_Filename.setText(todisplay); + } + else + { + boolean shortened = false; + String todisplay = m_Foldername; + String full_text = "scanning " + todisplay + " ..."; + m_Filename.setText(full_text); + } + } + + /** + * check al files and folders in filelist + */ + protected void ProcessFileList() + { + String FlashBaseDir = + Environment.getExternalStorageDirectory().getAbsolutePath(); + + Iterator itr = m_filenames.iterator(); + + while (itr.hasNext()) + { + String current_path = (String) itr.next(); + String FlashPath = FlashBaseDir + "/" + current_path; + + if (isAssetFolder(current_path)) + { + /* store information and update gui */ + m_Foldername = current_path; + publishProgress(0); + + /* open file in order to check if it's a folder */ + File current_folder = new File(FlashPath); + if (!current_folder.exists()) + { + if (!current_folder.mkdirs()) + { + Log.e("MinetestAssetCopy","\t failed create folder: " + + FlashPath); + } + else + { + Log.v("MinetestAssetCopy","\t created folder: " + + FlashPath); + } + } + + continue; + } + + /* if it's not a folder it's most likely a file */ + boolean refresh = true; + + File testme = new File(FlashPath); + + long asset_filesize = -1; + long stored_filesize = -1; + + if (testme.exists()) + { + try + { + AssetFileDescriptor fd = getAssets().openFd(current_path); + asset_filesize = fd.getLength(); + fd.close(); + } + catch (IOException e) + { + refresh = true; + m_asset_size_unknown.add(current_path); + Log.e("MinetestAssetCopy","Failed to open asset file \"" + + FlashPath + "\" for size check"); + } + + stored_filesize = testme.length(); + + if (asset_filesize == stored_filesize) + { + refresh = false; + } + + } + + if (refresh) + { + m_tocopy.add(current_path); + } + } + } + + /** + * read list of folders prepared on package build + */ + protected void BuildFolderList() + { + try + { + InputStream is = getAssets().open("index.txt"); + BufferedReader reader = new BufferedReader(new InputStreamReader(is)); + + String line = reader.readLine(); + while (line != null) + { + m_foldernames.add(line); + line = reader.readLine(); + } + is.close(); + } catch (IOException e1) + { + Log.e("MinetestAssetCopy","Error on processing index.txt"); + e1.printStackTrace(); + } + } + + /** + * read list of asset files prepared on package build + */ + protected void BuildFileList() + { + long entrycount = 0; + try + { + InputStream is = getAssets().open("filelist.txt"); + BufferedReader reader = new BufferedReader(new InputStreamReader(is)); + + String line = reader.readLine(); + while (line != null) + { + m_filenames.add(line); + line = reader.readLine(); + entrycount ++; + } + is.close(); + } + catch (IOException e1) + { + Log.e("MinetestAssetCopy","Error on processing filelist.txt"); + e1.printStackTrace(); + } + } + + protected void onPostExecute (String result) + { + finish(); + } + + protected boolean isAssetFolder(String path) + { + return m_foldernames.contains(path); + } + + boolean m_copy_started = false; + String m_Foldername = "media"; + Vector<String> m_foldernames; + Vector<String> m_filenames; + Vector<String> m_tocopy; + Vector<String> m_asset_size_unknown; + } +} |