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package org.libreoffice.storage.external;
import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.text.TextUtils;
import android.util.Log;
import org.libreoffice.R;
import org.libreoffice.storage.DocumentProviderSettingsActivity;
import org.libreoffice.storage.IFile;
import org.libreoffice.storage.IOUtils;
import org.libreoffice.storage.local.LocalFile;
import java.io.File;
import java.net.URI;
/**
* Legacy document provider for External SD cards, for Android 4.3 and below.
*
* Uses the LocalFile class.
*/
public class LegacyExtSDDocumentsProvider implements IExternalDocumentProvider,
SharedPreferences.OnSharedPreferenceChangeListener{
private static final String LOGTAG = LegacyExtSDDocumentsProvider.class.getSimpleName();
private int id;
private Context context;
private String rootPathURI;
public LegacyExtSDDocumentsProvider(int id, Context context) {
this.id = id;
this.context = context;
setupRootPathUri();
}
private void setupRootPathUri() {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
String rootURIGuess = guessRootURI();
rootPathURI = preferences.getString(
DocumentProviderSettingsActivity.KEY_PREF_EXTERNAL_SD_PATH_URI, rootURIGuess);
}
public String guessRootURI() {
//hacky method of obtaining extsdcard root
final String value = System.getenv("SECONDARY_STORAGE");
Log.d(LOGTAG, "guesses: " + value);
if (!TextUtils.isEmpty(value)) {
final String[] paths = value.split(":");
for (String path : paths) {
File file = new File(path);
if(path.contains("ext") && file.isDirectory()) {
return file.toURI().toString();
}
}
}
return "";
}
@Override
public IFile getRootDirectory() {
if(rootPathURI.equals("")) {
throw new RuntimeException(context.getString(R.string.ext_document_provider_error));
}
File f = IOUtils.getFileFromURIString(rootPathURI);
if(IOUtils.isInvalidFile(f)) {
//missing device
throw new RuntimeException(context.getString(R.string.legacy_extsd_missing_error));
}
return new LocalFile(f);
}
@Override
public IFile createFromUri(URI uri) {
return new LocalFile(uri);
}
@Override
public int getNameResource() {
return R.string.external_sd_file_system;
}
@Override
public int getId() {
return id;
}
@Override
public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
if (key.equals(DocumentProviderSettingsActivity.KEY_PREF_EXTERNAL_SD_PATH_URI)) {
rootPathURI = preferences.getString(key, "");
}
}
}
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