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.net.IDN;
  22 import java.util.Arrays;
  23 import java.util.Calendar;
  24 import java.util.Date;
  25 import java.util.HashMap;
  26 import java.util.HashSet;
  27 import java.util.Set;
  28
  29 import android.annotation.TargetApi;
  30 import android.os.Build;
  31
  32 import com.owncloud.android.R;
  33
  34 /**
  35  * A helper class for some string operations.
  36  *
  37  * @author Bartek Przybylski
  38  * @author David A. Velasco
  39  */
  40 public class DisplayUtils {
  41
  42     //private static String TAG = DisplayUtils.class.getSimpleName();
  43
  44     private static final String[] sizeSuffixes = { "B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB" };
  45
  46     private static HashMap<String, String> mimeType2HUmanReadable;
  47     static {
  48         mimeType2HUmanReadable = new HashMap<String, String>();
  49         // images
  50         mimeType2HUmanReadable.put("image/jpeg", "JPEG image");
  51         mimeType2HUmanReadable.put("image/jpg", "JPEG image");
  52         mimeType2HUmanReadable.put("image/png", "PNG image");
  53         mimeType2HUmanReadable.put("image/bmp", "Bitmap image");
  54         mimeType2HUmanReadable.put("image/gif", "GIF image");
  55         mimeType2HUmanReadable.put("image/svg+xml", "JPEG image");
  56         mimeType2HUmanReadable.put("image/tiff", "TIFF image");
  57         // music
  58         mimeType2HUmanReadable.put("audio/mpeg", "MP3 music file");
  59         mimeType2HUmanReadable.put("application/ogg", "OGG music file");
  60
  61     }
  62
  63     private static final String TYPE_APPLICATION = "application";
  64     private static final String TYPE_AUDIO = "audio";
  65     private static final String TYPE_IMAGE = "image";
  66     private static final String TYPE_TXT = "text";
  67     private static final String TYPE_VIDEO = "video";
  68
  69     private static final String SUBTYPE_PDF = "pdf";
  70     private static final String[] SUBTYPES_DOCUMENT = { "msword",
  71                                                         "vnd.openxmlformats-officedocument.wordprocessingml.document",
  72                                                         "vnd.oasis.opendocument.text",
  73                                                         "rtf"
  74                                                         };
  75     private static Set<String> SUBTYPES_DOCUMENT_SET = new HashSet<String>(Arrays.asList(SUBTYPES_DOCUMENT));
  76     private static final String[] SUBTYPES_SPREADSHEET = { "msexcel",
  77                                                            "vnd.openxmlformats-officedocument.spreadsheetml.sheet",
  78                                                            "vnd.oasis.opendocument.spreadsheet"
  79                                                            };
  80     private static Set<String> SUBTYPES_SPREADSHEET_SET = new HashSet<String>(Arrays.asList(SUBTYPES_SPREADSHEET));
  81     private static final String[] SUBTYPES_PRESENTATION = { "mspowerpoint",
  82                                                             "vnd.openxmlformats-officedocument.presentationml.presentation",
  83                                                             "vnd.oasis.opendocument.presentation"
  84                                                             };
  85     private static Set<String> SUBTYPES_PRESENTATION_SET = new HashSet<String>(Arrays.asList(SUBTYPES_PRESENTATION));
  86     private static final String[] SUBTYPES_COMPRESSED = {"x-tar", "x-gzip", "zip"};
  87     private static final Set<String> SUBTYPES_COMPRESSED_SET = new HashSet<String>(Arrays.asList(SUBTYPES_COMPRESSED));
  88     private static final String SUBTYPE_OCTET_STREAM = "octet-stream";
  89     private static final String EXTENSION_RAR = "rar";
  90     private static final String EXTENSION_RTF = "rtf";
  91     private static final String EXTENSION_3GP = "3gp";
  92
  93     /**
  94      * Converts the file size in bytes to human readable output.
  95      *
  96      * @param bytes Input file size
  97      * @return Like something readable like "12 MB"
  98      */
  99     public static String bytesToHumanReadable(long bytes) {
 100         double result = bytes;
 101         int attachedsuff = 0;
 102         while (result > 1024 && attachedsuff < sizeSuffixes.length) {
 103             result /= 1024.;
 104             attachedsuff++;
 105         }
 106         result = ((int) (result * 100)) / 100.;
 107         return result + " " + sizeSuffixes[attachedsuff];
 108     }
 109
 110     /**
 111      * Removes special HTML entities from a string
 112      *
 113      * @param s Input string
 114      * @return A cleaned version of the string
 115      */
 116     public static String HtmlDecode(String s) {
 117         /*
 118          * TODO: Perhaps we should use something more proven like:
 119          * http://commons.apache.org/lang/api-2.6/org/apache/commons/lang/StringEscapeUtils.html#unescapeHtml%28java.lang.String%29
 120          */
 121
 122         String ret = "";
 123         for (int i = 0; i < s.length(); ++i) {
 124             if (s.charAt(i) == '%') {
 125                 ret += (char) Integer.parseInt(s.substring(i + 1, i + 3), 16);
 126                 i += 2;
 127             } else {
 128                 ret += s.charAt(i);
 129             }
 130         }
 131         return ret;
 132     }
 133
 134     /**
 135      * Converts MIME types like "image/jpg" to more end user friendly output
 136      * like "JPG image".
 137      *
 138      * @param mimetype MIME type to convert
 139      * @return A human friendly version of the MIME type
 140      */
 141     public static String convertMIMEtoPrettyPrint(String mimetype) {
 142         if (mimeType2HUmanReadable.containsKey(mimetype)) {
 143             return mimeType2HUmanReadable.get(mimetype);
 144         }
 145         if (mimetype.split("/").length >= 2)
 146             return mimetype.split("/")[1].toUpperCase() + " file";
 147         return "Unknown type";
 148     }
 149
 150
 151     /**
 152      * Returns the resource identifier of an image resource to use as icon associated to a
 153      * known MIME type.
 154      *
 155      * @param mimetype      MIME type string.
 156      * @param filename      name, with extension
 157      * @return              Resource identifier of an image resource.
 158      */
 159     public static int getResourceId(String mimetype, String filename) {
 160
 161         if (mimetype == null || "DIR".equals(mimetype)) {
 162             return R.drawable.ic_menu_archive;
 163
 164         } else {
 165             String [] parts = mimetype.split("/");
 166             String type = parts[0];
 167             String subtype = (parts.length > 1) ? parts[1] : "";
 168
 169             if(TYPE_TXT.equals(type)) {
 170                 return R.drawable.file_doc;
 171
 172             } else if(TYPE_IMAGE.equals(type)) {
 173                 return R.drawable.file_image;
 174
 175             } else if(TYPE_VIDEO.equals(type)) {
 176                 return R.drawable.file_movie;
 177
 178             } else if(TYPE_AUDIO.equals(type)) {
 179                 return R.drawable.file_sound;
 180
 181             } else if(TYPE_APPLICATION.equals(type)) {
 182
 183                 if (SUBTYPE_PDF.equals(subtype)) {
 184                     return R.drawable.file_pdf;
 185
 186                 } else if (SUBTYPES_DOCUMENT_SET.contains(subtype)) {
 187                     return R.drawable.file_doc;
 188
 189                 } else if (SUBTYPES_SPREADSHEET_SET.contains(subtype)) {
 190                     return R.drawable.file_xls;
 191
 192                 } else if (SUBTYPES_PRESENTATION_SET.contains(subtype)) {
 193                     return R.drawable.file_ppt;
 194
 195                 } else if (SUBTYPES_COMPRESSED_SET.contains(subtype)) {
 196                     return R.drawable.file_zip;
 197
 198                 } else if (SUBTYPE_OCTET_STREAM.equals(subtype) ) {
 199                     if (getExtension(filename).equalsIgnoreCase(EXTENSION_RAR)) {
 200                         return R.drawable.file_zip;
 201
 202                     } else if (getExtension(filename).equalsIgnoreCase(EXTENSION_RTF)) {
 203                         return R.drawable.file_doc;
 204
 205                     } else if (getExtension(filename).equalsIgnoreCase(EXTENSION_3GP)) {
 206                         return R.drawable.file_movie;
 207
 208                     }
 209                 }
 210             }
 211         }
 212
 213         // default icon
 214         return R.drawable.file;
 215     }
 216
 217
 218     private static String getExtension(String filename) {
 219         String extension = filename.substring(filename.lastIndexOf(".") + 1);
 220
 221         return extension;
 222     }
 223
 224     /**
 225      * Converts Unix time to human readable format
 226      * @param miliseconds that have passed since 01/01/1970
 227      * @return The human readable time for the users locale
 228      */
 229     public static String unixTimeToHumanReadable(long milliseconds) {
 230         Date date = new Date(milliseconds);
 231         return date.toLocaleString();
 232     }
 233
 234
 235     public static int getSeasonalIconId() {
 236         if (Calendar.getInstance().get(Calendar.DAY_OF_YEAR) >= 354) {
 237             return R.drawable.winter_holidays_icon;
 238         } else {
 239             return R.drawable.icon;
 240         }
 241     }
 242
 243     /**
 244      * Converts an internationalized domain name (IDN) in an URL to and from ASCII/Unicode.
 245      * @param url the URL where the domain name should be converted
 246      * @param toASCII if true converts from Unicode to ASCII, if false converts from ASCII to Unicode
 247      * @return the URL containing the converted domain name
 248      */
 249     @TargetApi(Build.VERSION_CODES.GINGERBREAD)
 250     public static String convertIdn(String url, boolean toASCII) {
 251
 252         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
 253             // Find host name after '//' or '@'
 254             int hostStart = 0;
 255             if  (url.indexOf("//") != -1) {
 256                 hostStart = url.indexOf("//") + "//".length();
 257             } else if (url.indexOf("@") != -1) {
 258                 hostStart = url.indexOf("@") + "@".length();
 259             }
 260
 261             int hostEnd = url.substring(hostStart).indexOf("/");
 262             // Handle URL which doesn't have a path (path is implicitly '/')
 263             hostEnd = (hostEnd == -1 ? url.length() : hostStart + hostEnd);
 264
 265             String host = url.substring(hostStart, hostEnd);
 266             host = (toASCII ? IDN.toASCII(host) : IDN.toUnicode(host));
 267
 268             return url.substring(0, hostStart) + host + url.substring(hostEnd);
 269         } else {
 270             return url;
 271         }
 272     }
 273 }