src/com/owncloud/android/utils/DisplayUtils.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  Bartek Przybylski
   3  *   Copyright (C) 2012-2013 ownCloud Inc.
   4  *
   5  *   This program is free software: you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License version 2,
   7  *   as published by the Free Software Foundation.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package com.owncloud.android.utils;
  20
  21 import java.util.Arrays;
  22 import java.util.Calendar;
  23 import java.util.Date;
  24 import java.util.HashMap;
  25 import java.util.HashSet;
  26 import java.util.Set;
  27
  28 import android.util.Log;
  29
  30 import com.owncloud.android.R;
  31
  32 /**
  33  * A helper class for some string operations.
  34  *
  35  * @author Bartek Przybylski
  36  * @author David A. Velasco
  37  */
  38 public class DisplayUtils {
  39
  40     //private static String TAG = DisplayUtils.class.getSimpleName();
  41
  42     private static final String[] sizeSuffixes = { "B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB" };
  43
  44     private static HashMap<String, String> mimeType2HUmanReadable;
  45     static {
  46         mimeType2HUmanReadable = new HashMap<String, String>();
  47         // images
  48         mimeType2HUmanReadable.put("image/jpeg", "JPEG image");
  49         mimeType2HUmanReadable.put("image/jpg", "JPEG image");
  50         mimeType2HUmanReadable.put("image/png", "PNG image");
  51         mimeType2HUmanReadable.put("image/bmp", "Bitmap image");
  52         mimeType2HUmanReadable.put("image/gif", "GIF image");
  53         mimeType2HUmanReadable.put("image/svg+xml", "JPEG image");
  54         mimeType2HUmanReadable.put("image/tiff", "TIFF image");
  55         // music
  56         mimeType2HUmanReadable.put("audio/mpeg", "MP3 music file");
  57         mimeType2HUmanReadable.put("application/ogg", "OGG music file");
  58
  59     }
  60
  61     private static final String TYPE_APPLICATION = "application";
  62     private static final String TYPE_AUDIO = "audio";
  63     private static final String TYPE_IMAGE = "image";
  64     private static final String TYPE_TXT = "text";
  65     private static final String TYPE_VIDEO = "video";
  66
  67     private static final String SUBTYPE_PDF = "pdf";
  68     private static final String[] SUBTYPES_DOCUMENT = { "msword",
  69                                                         "vnd.openxmlformats-officedocument.wordprocessingml.document",
  70                                                         "vnd.oasis.opendocument.text",
  71                                                         "rtf"
  72                                                         };
  73     private static Set<String> SUBTYPES_DOCUMENT_SET = new HashSet<String>(Arrays.asList(SUBTYPES_DOCUMENT));
  74     private static final String[] SUBTYPES_SPREADSHEET = { "msexcel",
  75                                                            "vnd.openxmlformats-officedocument.spreadsheetml.sheet",
  76                                                            "vnd.oasis.opendocument.spreadsheet"
  77                                                            };
  78     private static Set<String> SUBTYPES_SPREADSHEET_SET = new HashSet<String>(Arrays.asList(SUBTYPES_SPREADSHEET));
  79     private static final String[] SUBTYPES_PRESENTATION = { "mspowerpoint",
  80                                                             "vnd.openxmlformats-officedocument.presentationml.presentation",
  81                                                             "vnd.oasis.opendocument.presentation"
  82                                                             };
  83     private static Set<String> SUBTYPES_PRESENTATION_SET = new HashSet<String>(Arrays.asList(SUBTYPES_PRESENTATION));
  84     private static final String[] SUBTYPES_COMPRESSED = {"x-tar", "x-gzip", "zip"};
  85     private static final Set<String> SUBTYPES_COMPRESSED_SET = new HashSet<String>(Arrays.asList(SUBTYPES_COMPRESSED));
  86     private static final String SUBTYPE_OCTET_STREAM = "octet-stream";
  87     private static final String EXTENSION_RAR = "rar";
  88     private static final String EXTENSION_RTF = "rtf";
  89     private static final String EXTENSION_3GP = "3gp";
  90
  91     /**
  92      * Converts the file size in bytes to human readable output.
  93      *
  94      * @param bytes Input file size
  95      * @return Like something readable like "12 MB"
  96      */
  97     public static String bytesToHumanReadable(long bytes) {
  98         double result = bytes;
  99         int attachedsuff = 0;
 100         while (result > 1024 && attachedsuff < sizeSuffixes.length) {
 101             result /= 1024.;
 102             attachedsuff++;
 103         }
 104         result = ((int) (result * 100)) / 100.;
 105         return result + " " + sizeSuffixes[attachedsuff];
 106     }
 107
 108     /**
 109      * Removes special HTML entities from a string
 110      *
 111      * @param s Input string
 112      * @return A cleaned version of the string
 113      */
 114     public static String HtmlDecode(String s) {
 115         /*
 116          * TODO: Perhaps we should use something more proven like:
 117          * http://commons.apache.org/lang/api-2.6/org/apache/commons/lang/StringEscapeUtils.html#unescapeHtml%28java.lang.String%29
 118          */
 119
 120         String ret = "";
 121         for (int i = 0; i < s.length(); ++i) {
 122             if (s.charAt(i) == '%') {
 123                 ret += (char) Integer.parseInt(s.substring(i + 1, i + 3), 16);
 124                 i += 2;
 125             } else {
 126                 ret += s.charAt(i);
 127             }
 128         }
 129         return ret;
 130     }
 131
 132     /**
 133      * Converts MIME types like "image/jpg" to more end user friendly output
 134      * like "JPG image".
 135      *
 136      * @param mimetype MIME type to convert
 137      * @return A human friendly version of the MIME type
 138      */
 139     public static String convertMIMEtoPrettyPrint(String mimetype) {
 140         if (mimeType2HUmanReadable.containsKey(mimetype)) {
 141             return mimeType2HUmanReadable.get(mimetype);
 142         }
 143         if (mimetype.split("/").length >= 2)
 144             return mimetype.split("/")[1].toUpperCase() + " file";
 145         return "Unknown type";
 146     }
 147
 148
 149     /**
 150      * Returns the resource identifier of an image resource to use as icon associated to a
 151      * known MIME type.
 152      *
 153      * @param mimetype      MIME type string.
 154      * @return              Resource identifier of an image resource.
 155      */
 156     public static int getResourceId(String mimetype, String filename) {
 157
 158         if (mimetype == null || "DIR".equals(mimetype)) {
 159             return R.drawable.ic_menu_archive;
 160
 161         } else {
 162             String [] parts = mimetype.split("/");
 163             String type = parts[0];
 164             String subtype = (parts.length > 1) ? parts[1] : "";
 165
 166             if(TYPE_TXT.equals(type)) {
 167                 return R.drawable.file_doc;
 168
 169             } else if(TYPE_IMAGE.equals(type)) {
 170                 return R.drawable.file_image;
 171
 172             } else if(TYPE_VIDEO.equals(type)) {
 173                 return R.drawable.file_movie;
 174
 175             } else if(TYPE_AUDIO.equals(type)) {
 176                 return R.drawable.file_sound;
 177
 178             } else if(TYPE_APPLICATION.equals(type)) {
 179
 180                 if (SUBTYPE_PDF.equals(subtype)) {
 181                     return R.drawable.file_pdf;
 182
 183                 } else if (SUBTYPES_DOCUMENT_SET.contains(subtype)) {
 184                     return R.drawable.file_doc;
 185
 186                 } else if (SUBTYPES_SPREADSHEET_SET.contains(subtype)) {
 187                     return R.drawable.file_xls;
 188
 189                 } else if (SUBTYPES_PRESENTATION_SET.contains(subtype)) {
 190                     return R.drawable.file_ppt;
 191
 192                 } else if (SUBTYPES_COMPRESSED_SET.contains(subtype)) {
 193                     return R.drawable.file_zip;
 194
 195                 } else if (SUBTYPE_OCTET_STREAM.equals(subtype) ) {
 196                     if (getExtension(filename).equalsIgnoreCase(EXTENSION_RAR)) {
 197                         return R.drawable.file_zip;
 198
 199                     } else if (getExtension(filename).equalsIgnoreCase(EXTENSION_RTF)) {
 200                         return R.drawable.file_doc;
 201
 202                     } else if (getExtension(filename).equalsIgnoreCase(EXTENSION_3GP)) {
 203                         return R.drawable.file_movie;
 204
 205                     }
 206                 }
 207             }
 208         }
 209
 210         // default icon
 211         return R.drawable.file;
 212     }
 213
 214
 215     private static String getExtension(String filename) {
 216         String extension = filename.substring(filename.lastIndexOf(".") + 1);
 217
 218         return extension;
 219     }
 220
 221     /**
 222      * Converts Unix time to human readable format
 223      * @param miliseconds that have passed since 01/01/1970
 224      * @return The human readable time for the users locale
 225      */
 226     public static String unixTimeToHumanReadable(long milliseconds) {
 227         Date date = new Date(milliseconds);
 228         return date.toLocaleString();
 229     }
 230
 231
 232     public static int getSeasonalIconId() {
 233         if (Calendar.getInstance().get(Calendar.DAY_OF_YEAR) >= 354) {
 234             return R.drawable.winter_holidays_icon;
 235         } else {
 236             return R.drawable.icon;
 237         }
 238     }
 239 }