Android/folioreader/src/main/java/com/folioreader/util/FileUtil.java

   1 package com.folioreader.util;
   2
   3 import android.content.Context;
   4 import android.content.res.AssetManager;
   5 import android.content.res.Resources;
   6 import android.os.Environment;
   7 import android.util.Log;
   8
   9 import com.folioreader.Constants;
  10 import com.folioreader.ui.folio.activity.FolioActivity;
  11
  12 import java.io.File;
  13 import java.io.FileOutputStream;
  14 import java.io.IOException;
  15 import java.io.InputStream;
  16 import java.io.OutputStream;
  17
  18 /**
  19  * Created by Mahavir on 12/15/16.
  20  */
  21
  22 public class FileUtil {
  23     private static final String TAG = FileUtil.class.getSimpleName();
  24     private static final String FOLIO_READER_ROOT = "/folioreader/";
  25
  26     public static String saveEpubFileAndLoadLazyBook(final Context context, FolioActivity.EpubSourceType epubSourceType, String epubFilePath, int epubRawId, String epubFileName) {
  27         String filePath;
  28         InputStream epubInputStream;
  29         boolean isFolderAvailable;
  30         try {
  31             isFolderAvailable = isFolderAvailable(epubFileName);
  32             filePath = getFolioEpubFilePath(epubSourceType, epubFilePath, epubFileName);
  33
  34             if (!isFolderAvailable) {
  35                 if (epubSourceType.equals(FolioActivity.EpubSourceType.RAW)) {
  36                     epubInputStream = context.getResources().openRawResource(epubRawId);
  37                     saveTempEpubFile(filePath, epubFileName, epubInputStream);
  38                 } else if (epubSourceType.equals(FolioActivity.EpubSourceType.ASSETS)) {
  39                     AssetManager assetManager = context.getAssets();
  40                     epubFilePath = epubFilePath.replaceAll(Constants.ASSET, "");
  41                     epubInputStream = assetManager.open(epubFilePath);
  42                     saveTempEpubFile(filePath, epubFileName, epubInputStream);
  43                 } else {
  44                     filePath = epubFilePath;
  45                 }
  46             }
  47             return filePath;
  48         } catch (IOException e) {
  49             Log.d(TAG, e.getMessage());
  50         }
  51
  52         return null;
  53     }
  54
  55     public static String getFolioEpubFolderPath(String epubFileName) {
  56         return Environment.getExternalStorageDirectory().getAbsolutePath()
  57                 + "/" + FOLIO_READER_ROOT + "/" + epubFileName;
  58     }
  59
  60     public static String getFolioEpubFilePath(FolioActivity.EpubSourceType sourceType, String epubFilePath, String epubFileName) {
  61         if (FolioActivity.EpubSourceType.SD_CARD.equals(sourceType)) {
  62             return epubFilePath;
  63         } else {
  64             return getFolioEpubFolderPath(epubFileName) + "/" + epubFileName + ".epub";
  65         }
  66     }
  67
  68     private static boolean isFolderAvailable(String epubFileName) {
  69         File file = new File(getFolioEpubFolderPath(epubFileName));
  70         return file.isDirectory();
  71     }
  72
  73     public static String getEpubFilename(Context context, FolioActivity.EpubSourceType epubSourceType,
  74                                          String epubFilePath, int epubRawId) {
  75         String epubFileName;
  76         if (epubSourceType.equals(FolioActivity.EpubSourceType.RAW)) {
  77             Resources res = context.getResources();
  78             epubFileName = res.getResourceEntryName(epubRawId);
  79         } else {
  80             String[] temp = epubFilePath.split("/");
  81             epubFileName = temp[temp.length - 1];
  82             int fileMaxIndex = epubFileName.length();
  83             epubFileName = epubFileName.substring(0, fileMaxIndex - 5);
  84         }
  85
  86         return epubFileName;
  87     }
  88
  89     public static Boolean saveTempEpubFile(String filePath, String fileName, InputStream inputStream) {
  90         OutputStream outputStream = null;
  91         File file = new File(filePath);
  92         try {
  93             if (!file.exists()) {
  94                 File folder = new File(getFolioEpubFolderPath(fileName));
  95                 folder.mkdirs();
  96
  97                 outputStream = new FileOutputStream(file);
  98                 int read = 0;
  99                 byte[] bytes = new byte[inputStream.available()];
 100
 101                 while ((read = inputStream.read(bytes)) != -1) {
 102                     outputStream.write(bytes, 0, read);
 103                 }
 104             } else {
 105                 return true;
 106             }
 107             inputStream.close();
 108             outputStream.close();
 109         } catch (IOException e) {
 110             Log.d(TAG, e.getMessage());
 111         }
 112         return false;
 113     }
 114 }