public static void initialize(Context context) {
if (DNUtils.getRootDir() != null) {
STORE = context.getSharedPreferences(STORE_NAME, Context.MODE_PRIVATE);
final String rootPath =
Environment.getExternalStorageDirectory() + "/" + DNUtils.getRootDir();
final String imagesPath = rootPath + "/images";
final String jsonsPath = rootPath + "/texts";
if (!STORE.contains(KEY_DIR_IMAGES)
|| !STORE.contains(KEY_DIR_IMAGES)
|| !STORE.contains(KEY_DIR_JSONS)) {
final SharedPreferences.Editor editor = STORE.edit();
editor.putString(KEY_DIR_ROOT, rootPath);
editor.putString(KEY_DIR_IMAGES, imagesPath);
editor.putString(KEY_DIR_JSONS, jsonsPath);
editor.putLong(KEY_SIZE, 0);
editor.commit();
}
File file = new File(rootPath);
if (!file.exists()) file.mkdir();
file = new File(imagesPath);
if (!file.exists()) file.mkdir();
file = new File(jsonsPath);
if (!file.exists()) file.mkdir();
}
}
// TODO read text file
private static String readTextFromFile(File file) {
try {
InputStream is = new FileInputStream(file);
Writer writer = new StringWriter();
char[] buffer = new char[1024];
try {
@SuppressWarnings("resource")
Reader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
int n;
while ((n = reader.read(buffer)) != -1) {
writer.write(buffer, 0, n);
}
} finally {
is.close();
}
return writer.toString();
} catch (Exception e) {
e.printStackTrace();
DNUtils.logError(e.getMessage());
return null;
}
}
// TODO write text file
private static boolean writeTextIntoFile(String text, String path) {
FileWriter writer;
try {
File file = new File(path);
boolean isExists = file.exists();
writer = new FileWriter(path, false);
writer.write(text);
writer.flush();
writer.close();
file = new File(path);
if (!isExists) {
long size = STORE.getLong(KEY_SIZE, 0);
size += file.length();
STORE.edit().putLong(KEY_SIZE, size).commit();
}
} catch (IOException e) {
e.printStackTrace();
DNUtils.logError(e.getMessage());
return false;
}
return true;
}
// TODO get text file
public static String getText(String name) {
String localPath = STORE.getString(KEY_DIR_JSONS, "") + "/" + DNUtils.toMD5(name);
File file = new File(localPath);
if (file.exists()) return readTextFromFile(file);
return null;
}
// TODO get local image path
public static String getLocalPath(String url) {
return STORE.getString(KEY_DIR_IMAGES, "") + "/" + DNUtils.toMD5(url);
}