The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.pim; |
| 18 | |
| 19 | import android.content.ContentValues; |
| 20 | import android.database.Cursor; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 21 | import android.provider.Calendar; |
| 22 | import android.text.TextUtils; |
| 23 | import android.text.format.Time; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 24 | import android.util.Log; |
| 25 | |
| 26 | import java.util.List; |
Fabrice Di Meglio | 66c5bd9 | 2010-02-23 11:50:21 -0800 | [diff] [blame] | 27 | import java.util.regex.Pattern; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 28 | |
| 29 | /** |
| 30 | * Basic information about a recurrence, following RFC 2445 Section 4.8.5. |
| 31 | * Contains the RRULEs, RDATE, EXRULEs, and EXDATE properties. |
| 32 | */ |
| 33 | public class RecurrenceSet { |
| 34 | |
| 35 | private final static String TAG = "CalendarProvider"; |
| 36 | |
| 37 | private final static String RULE_SEPARATOR = "\n"; |
Fabrice Di Meglio | 66c5bd9 | 2010-02-23 11:50:21 -0800 | [diff] [blame] | 38 | private final static String FOLDING_SEPARATOR = "\n "; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 39 | |
| 40 | // TODO: make these final? |
| 41 | public EventRecurrence[] rrules = null; |
| 42 | public long[] rdates = null; |
| 43 | public EventRecurrence[] exrules = null; |
| 44 | public long[] exdates = null; |
| 45 | |
| 46 | /** |
| 47 | * Creates a new RecurrenceSet from information stored in the |
| 48 | * events table in the CalendarProvider. |
| 49 | * @param values The values retrieved from the Events table. |
| 50 | */ |
Fabrice Di Meglio | 24b5bdd | 2010-02-16 18:18:18 -0800 | [diff] [blame] | 51 | public RecurrenceSet(ContentValues values) |
| 52 | throws EventRecurrence.InvalidFormatException { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 53 | String rruleStr = values.getAsString(Calendar.Events.RRULE); |
| 54 | String rdateStr = values.getAsString(Calendar.Events.RDATE); |
| 55 | String exruleStr = values.getAsString(Calendar.Events.EXRULE); |
| 56 | String exdateStr = values.getAsString(Calendar.Events.EXDATE); |
| 57 | init(rruleStr, rdateStr, exruleStr, exdateStr); |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Creates a new RecurrenceSet from information stored in a database |
| 62 | * {@link Cursor} pointing to the events table in the |
| 63 | * CalendarProvider. The cursor must contain the RRULE, RDATE, EXRULE, |
| 64 | * and EXDATE columns. |
| 65 | * |
| 66 | * @param cursor The cursor containing the RRULE, RDATE, EXRULE, and EXDATE |
| 67 | * columns. |
| 68 | */ |
Fabrice Di Meglio | 24b5bdd | 2010-02-16 18:18:18 -0800 | [diff] [blame] | 69 | public RecurrenceSet(Cursor cursor) |
| 70 | throws EventRecurrence.InvalidFormatException { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 71 | int rruleColumn = cursor.getColumnIndex(Calendar.Events.RRULE); |
| 72 | int rdateColumn = cursor.getColumnIndex(Calendar.Events.RDATE); |
| 73 | int exruleColumn = cursor.getColumnIndex(Calendar.Events.EXRULE); |
| 74 | int exdateColumn = cursor.getColumnIndex(Calendar.Events.EXDATE); |
| 75 | String rruleStr = cursor.getString(rruleColumn); |
| 76 | String rdateStr = cursor.getString(rdateColumn); |
| 77 | String exruleStr = cursor.getString(exruleColumn); |
| 78 | String exdateStr = cursor.getString(exdateColumn); |
| 79 | init(rruleStr, rdateStr, exruleStr, exdateStr); |
| 80 | } |
| 81 | |
| 82 | public RecurrenceSet(String rruleStr, String rdateStr, |
Fabrice Di Meglio | 24b5bdd | 2010-02-16 18:18:18 -0800 | [diff] [blame] | 83 | String exruleStr, String exdateStr) |
| 84 | throws EventRecurrence.InvalidFormatException { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 85 | init(rruleStr, rdateStr, exruleStr, exdateStr); |
| 86 | } |
| 87 | |
| 88 | private void init(String rruleStr, String rdateStr, |
Fabrice Di Meglio | 24b5bdd | 2010-02-16 18:18:18 -0800 | [diff] [blame] | 89 | String exruleStr, String exdateStr) |
| 90 | throws EventRecurrence.InvalidFormatException { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 91 | if (!TextUtils.isEmpty(rruleStr) || !TextUtils.isEmpty(rdateStr)) { |
| 92 | |
| 93 | if (!TextUtils.isEmpty(rruleStr)) { |
| 94 | String[] rruleStrs = rruleStr.split(RULE_SEPARATOR); |
| 95 | rrules = new EventRecurrence[rruleStrs.length]; |
| 96 | for (int i = 0; i < rruleStrs.length; ++i) { |
| 97 | EventRecurrence rrule = new EventRecurrence(); |
| 98 | rrule.parse(rruleStrs[i]); |
| 99 | rrules[i] = rrule; |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | if (!TextUtils.isEmpty(rdateStr)) { |
| 104 | rdates = parseRecurrenceDates(rdateStr); |
| 105 | } |
| 106 | |
| 107 | if (!TextUtils.isEmpty(exruleStr)) { |
| 108 | String[] exruleStrs = exruleStr.split(RULE_SEPARATOR); |
| 109 | exrules = new EventRecurrence[exruleStrs.length]; |
| 110 | for (int i = 0; i < exruleStrs.length; ++i) { |
| 111 | EventRecurrence exrule = new EventRecurrence(); |
| 112 | exrule.parse(exruleStr); |
| 113 | exrules[i] = exrule; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | if (!TextUtils.isEmpty(exdateStr)) { |
| 118 | exdates = parseRecurrenceDates(exdateStr); |
| 119 | } |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Returns whether or not a recurrence is defined in this RecurrenceSet. |
| 125 | * @return Whether or not a recurrence is defined in this RecurrenceSet. |
| 126 | */ |
| 127 | public boolean hasRecurrence() { |
| 128 | return (rrules != null || rdates != null); |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Parses the provided RDATE or EXDATE string into an array of longs |
| 133 | * representing each date/time in the recurrence. |
| 134 | * @param recurrence The recurrence to be parsed. |
| 135 | * @return The list of date/times. |
| 136 | */ |
| 137 | public static long[] parseRecurrenceDates(String recurrence) { |
| 138 | // TODO: use "local" time as the default. will need to handle times |
| 139 | // that end in "z" (UTC time) explicitly at that point. |
| 140 | String tz = Time.TIMEZONE_UTC; |
| 141 | int tzidx = recurrence.indexOf(";"); |
| 142 | if (tzidx != -1) { |
| 143 | tz = recurrence.substring(0, tzidx); |
| 144 | recurrence = recurrence.substring(tzidx + 1); |
| 145 | } |
| 146 | Time time = new Time(tz); |
| 147 | String[] rawDates = recurrence.split(","); |
| 148 | int n = rawDates.length; |
| 149 | long[] dates = new long[n]; |
| 150 | for (int i = 0; i<n; ++i) { |
| 151 | // The timezone is updated to UTC if the time string specified 'Z'. |
| 152 | time.parse(rawDates[i]); |
| 153 | dates[i] = time.toMillis(false /* use isDst */); |
| 154 | time.timezone = tz; |
| 155 | } |
| 156 | return dates; |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * Populates the database map of values with the appropriate RRULE, RDATE, |
| 161 | * EXRULE, and EXDATE values extracted from the parsed iCalendar component. |
| 162 | * @param component The iCalendar component containing the desired |
| 163 | * recurrence specification. |
| 164 | * @param values The db values that should be updated. |
| 165 | * @return true if the component contained the necessary information |
| 166 | * to specify a recurrence. The required fields are DTSTART, |
| 167 | * one of DTEND/DURATION, and one of RRULE/RDATE. Returns false if |
| 168 | * there was an error, including if the date is out of range. |
| 169 | */ |
| 170 | public static boolean populateContentValues(ICalendar.Component component, |
| 171 | ContentValues values) { |
| 172 | ICalendar.Property dtstartProperty = |
| 173 | component.getFirstProperty("DTSTART"); |
| 174 | String dtstart = dtstartProperty.getValue(); |
| 175 | ICalendar.Parameter tzidParam = |
| 176 | dtstartProperty.getFirstParameter("TZID"); |
| 177 | // NOTE: the timezone may be null, if this is a floating time. |
| 178 | String tzid = tzidParam == null ? null : tzidParam.value; |
| 179 | Time start = new Time(tzidParam == null ? Time.TIMEZONE_UTC : tzid); |
| 180 | boolean inUtc = start.parse(dtstart); |
| 181 | boolean allDay = start.allDay; |
| 182 | |
Fabrice Di Meglio | 9d8d1e5 | 2010-04-12 11:14:26 -0700 | [diff] [blame] | 183 | // We force TimeZone to UTC for "all day recurring events" as the server is sending no |
| 184 | // TimeZone in DTSTART for them |
| 185 | if (inUtc || allDay) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 186 | tzid = Time.TIMEZONE_UTC; |
| 187 | } |
| 188 | |
| 189 | String duration = computeDuration(start, component); |
| 190 | String rrule = flattenProperties(component, "RRULE"); |
| 191 | String rdate = extractDates(component.getFirstProperty("RDATE")); |
| 192 | String exrule = flattenProperties(component, "EXRULE"); |
| 193 | String exdate = extractDates(component.getFirstProperty("EXDATE")); |
| 194 | |
| 195 | if ((TextUtils.isEmpty(dtstart))|| |
| 196 | (TextUtils.isEmpty(duration))|| |
| 197 | ((TextUtils.isEmpty(rrule))&& |
| 198 | (TextUtils.isEmpty(rdate)))) { |
Joe Onorato | 43a1765 | 2011-04-06 19:22:23 -0700 | [diff] [blame] | 199 | if (false) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 200 | Log.d(TAG, "Recurrence missing DTSTART, DTEND/DURATION, " |
| 201 | + "or RRULE/RDATE: " |
| 202 | + component.toString()); |
| 203 | } |
| 204 | return false; |
| 205 | } |
| 206 | |
| 207 | if (allDay) { |
Fabrice Di Meglio | 9d8d1e5 | 2010-04-12 11:14:26 -0700 | [diff] [blame] | 208 | start.timezone = Time.TIMEZONE_UTC; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 209 | } |
| 210 | long millis = start.toMillis(false /* use isDst */); |
| 211 | values.put(Calendar.Events.DTSTART, millis); |
| 212 | if (millis == -1) { |
Joe Onorato | 43a1765 | 2011-04-06 19:22:23 -0700 | [diff] [blame] | 213 | if (false) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 214 | Log.d(TAG, "DTSTART is out of range: " + component.toString()); |
| 215 | } |
| 216 | return false; |
| 217 | } |
| 218 | |
| 219 | values.put(Calendar.Events.RRULE, rrule); |
| 220 | values.put(Calendar.Events.RDATE, rdate); |
| 221 | values.put(Calendar.Events.EXRULE, exrule); |
| 222 | values.put(Calendar.Events.EXDATE, exdate); |
| 223 | values.put(Calendar.Events.EVENT_TIMEZONE, tzid); |
| 224 | values.put(Calendar.Events.DURATION, duration); |
| 225 | values.put(Calendar.Events.ALL_DAY, allDay ? 1 : 0); |
| 226 | return true; |
| 227 | } |
| 228 | |
Ken Shirriff | 3b95f53 | 2009-07-06 10:45:38 -0700 | [diff] [blame] | 229 | // This can be removed when the old CalendarSyncAdapter is removed. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 230 | public static boolean populateComponent(Cursor cursor, |
| 231 | ICalendar.Component component) { |
| 232 | |
| 233 | int dtstartColumn = cursor.getColumnIndex(Calendar.Events.DTSTART); |
| 234 | int durationColumn = cursor.getColumnIndex(Calendar.Events.DURATION); |
| 235 | int tzidColumn = cursor.getColumnIndex(Calendar.Events.EVENT_TIMEZONE); |
| 236 | int rruleColumn = cursor.getColumnIndex(Calendar.Events.RRULE); |
| 237 | int rdateColumn = cursor.getColumnIndex(Calendar.Events.RDATE); |
| 238 | int exruleColumn = cursor.getColumnIndex(Calendar.Events.EXRULE); |
| 239 | int exdateColumn = cursor.getColumnIndex(Calendar.Events.EXDATE); |
| 240 | int allDayColumn = cursor.getColumnIndex(Calendar.Events.ALL_DAY); |
| 241 | |
| 242 | |
| 243 | long dtstart = -1; |
| 244 | if (!cursor.isNull(dtstartColumn)) { |
| 245 | dtstart = cursor.getLong(dtstartColumn); |
| 246 | } |
| 247 | String duration = cursor.getString(durationColumn); |
| 248 | String tzid = cursor.getString(tzidColumn); |
| 249 | String rruleStr = cursor.getString(rruleColumn); |
| 250 | String rdateStr = cursor.getString(rdateColumn); |
| 251 | String exruleStr = cursor.getString(exruleColumn); |
| 252 | String exdateStr = cursor.getString(exdateColumn); |
| 253 | boolean allDay = cursor.getInt(allDayColumn) == 1; |
| 254 | |
| 255 | if ((dtstart == -1) || |
| 256 | (TextUtils.isEmpty(duration))|| |
| 257 | ((TextUtils.isEmpty(rruleStr))&& |
| 258 | (TextUtils.isEmpty(rdateStr)))) { |
| 259 | // no recurrence. |
| 260 | return false; |
| 261 | } |
| 262 | |
| 263 | ICalendar.Property dtstartProp = new ICalendar.Property("DTSTART"); |
| 264 | Time dtstartTime = null; |
| 265 | if (!TextUtils.isEmpty(tzid)) { |
| 266 | if (!allDay) { |
| 267 | dtstartProp.addParameter(new ICalendar.Parameter("TZID", tzid)); |
| 268 | } |
| 269 | dtstartTime = new Time(tzid); |
| 270 | } else { |
| 271 | // use the "floating" timezone |
| 272 | dtstartTime = new Time(Time.TIMEZONE_UTC); |
| 273 | } |
| 274 | |
| 275 | dtstartTime.set(dtstart); |
| 276 | // make sure the time is printed just as a date, if all day. |
| 277 | // TODO: android.pim.Time really should take care of this for us. |
| 278 | if (allDay) { |
| 279 | dtstartProp.addParameter(new ICalendar.Parameter("VALUE", "DATE")); |
| 280 | dtstartTime.allDay = true; |
| 281 | dtstartTime.hour = 0; |
| 282 | dtstartTime.minute = 0; |
| 283 | dtstartTime.second = 0; |
| 284 | } |
| 285 | |
| 286 | dtstartProp.setValue(dtstartTime.format2445()); |
| 287 | component.addProperty(dtstartProp); |
| 288 | ICalendar.Property durationProp = new ICalendar.Property("DURATION"); |
| 289 | durationProp.setValue(duration); |
| 290 | component.addProperty(durationProp); |
| 291 | |
| 292 | addPropertiesForRuleStr(component, "RRULE", rruleStr); |
| 293 | addPropertyForDateStr(component, "RDATE", rdateStr); |
| 294 | addPropertiesForRuleStr(component, "EXRULE", exruleStr); |
| 295 | addPropertyForDateStr(component, "EXDATE", exdateStr); |
| 296 | return true; |
| 297 | } |
| 298 | |
Ken Shirriff | 3b95f53 | 2009-07-06 10:45:38 -0700 | [diff] [blame] | 299 | public static boolean populateComponent(ContentValues values, |
| 300 | ICalendar.Component component) { |
| 301 | long dtstart = -1; |
| 302 | if (values.containsKey(Calendar.Events.DTSTART)) { |
| 303 | dtstart = values.getAsLong(Calendar.Events.DTSTART); |
| 304 | } |
| 305 | String duration = values.getAsString(Calendar.Events.DURATION); |
| 306 | String tzid = values.getAsString(Calendar.Events.EVENT_TIMEZONE); |
| 307 | String rruleStr = values.getAsString(Calendar.Events.RRULE); |
| 308 | String rdateStr = values.getAsString(Calendar.Events.RDATE); |
| 309 | String exruleStr = values.getAsString(Calendar.Events.EXRULE); |
| 310 | String exdateStr = values.getAsString(Calendar.Events.EXDATE); |
Fabrice Di Meglio | 66c5bd9 | 2010-02-23 11:50:21 -0800 | [diff] [blame] | 311 | Integer allDayInteger = values.getAsInteger(Calendar.Events.ALL_DAY); |
| 312 | boolean allDay = (null != allDayInteger) ? (allDayInteger == 1) : false; |
Ken Shirriff | 3b95f53 | 2009-07-06 10:45:38 -0700 | [diff] [blame] | 313 | |
| 314 | if ((dtstart == -1) || |
| 315 | (TextUtils.isEmpty(duration))|| |
| 316 | ((TextUtils.isEmpty(rruleStr))&& |
| 317 | (TextUtils.isEmpty(rdateStr)))) { |
| 318 | // no recurrence. |
| 319 | return false; |
| 320 | } |
| 321 | |
| 322 | ICalendar.Property dtstartProp = new ICalendar.Property("DTSTART"); |
| 323 | Time dtstartTime = null; |
| 324 | if (!TextUtils.isEmpty(tzid)) { |
| 325 | if (!allDay) { |
| 326 | dtstartProp.addParameter(new ICalendar.Parameter("TZID", tzid)); |
| 327 | } |
| 328 | dtstartTime = new Time(tzid); |
| 329 | } else { |
| 330 | // use the "floating" timezone |
| 331 | dtstartTime = new Time(Time.TIMEZONE_UTC); |
| 332 | } |
| 333 | |
| 334 | dtstartTime.set(dtstart); |
| 335 | // make sure the time is printed just as a date, if all day. |
| 336 | // TODO: android.pim.Time really should take care of this for us. |
| 337 | if (allDay) { |
| 338 | dtstartProp.addParameter(new ICalendar.Parameter("VALUE", "DATE")); |
| 339 | dtstartTime.allDay = true; |
| 340 | dtstartTime.hour = 0; |
| 341 | dtstartTime.minute = 0; |
| 342 | dtstartTime.second = 0; |
| 343 | } |
| 344 | |
| 345 | dtstartProp.setValue(dtstartTime.format2445()); |
| 346 | component.addProperty(dtstartProp); |
| 347 | ICalendar.Property durationProp = new ICalendar.Property("DURATION"); |
| 348 | durationProp.setValue(duration); |
| 349 | component.addProperty(durationProp); |
| 350 | |
| 351 | addPropertiesForRuleStr(component, "RRULE", rruleStr); |
| 352 | addPropertyForDateStr(component, "RDATE", rdateStr); |
| 353 | addPropertiesForRuleStr(component, "EXRULE", exruleStr); |
| 354 | addPropertyForDateStr(component, "EXDATE", exdateStr); |
| 355 | return true; |
| 356 | } |
| 357 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 358 | private static void addPropertiesForRuleStr(ICalendar.Component component, |
| 359 | String propertyName, |
| 360 | String ruleStr) { |
| 361 | if (TextUtils.isEmpty(ruleStr)) { |
| 362 | return; |
| 363 | } |
Fabrice Di Meglio | 66c5bd9 | 2010-02-23 11:50:21 -0800 | [diff] [blame] | 364 | String[] rrules = getRuleStrings(ruleStr); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 365 | for (String rrule : rrules) { |
| 366 | ICalendar.Property prop = new ICalendar.Property(propertyName); |
| 367 | prop.setValue(rrule); |
| 368 | component.addProperty(prop); |
| 369 | } |
| 370 | } |
| 371 | |
Fabrice Di Meglio | 66c5bd9 | 2010-02-23 11:50:21 -0800 | [diff] [blame] | 372 | private static String[] getRuleStrings(String ruleStr) { |
| 373 | if (null == ruleStr) { |
| 374 | return new String[0]; |
| 375 | } |
| 376 | String unfoldedRuleStr = unfold(ruleStr); |
| 377 | String[] split = unfoldedRuleStr.split(RULE_SEPARATOR); |
| 378 | int count = split.length; |
| 379 | for (int n = 0; n < count; n++) { |
| 380 | split[n] = fold(split[n]); |
| 381 | } |
| 382 | return split; |
| 383 | } |
| 384 | |
| 385 | |
| 386 | private static final Pattern IGNORABLE_ICAL_WHITESPACE_RE = |
| 387 | Pattern.compile("(?:\\r\\n?|\\n)[ \t]"); |
| 388 | |
| 389 | private static final Pattern FOLD_RE = Pattern.compile(".{75}"); |
| 390 | |
| 391 | /** |
| 392 | * fold and unfolds ical content lines as per RFC 2445 section 4.1. |
| 393 | * |
| 394 | * <h3>4.1 Content Lines</h3> |
| 395 | * |
| 396 | * <p>The iCalendar object is organized into individual lines of text, called |
| 397 | * content lines. Content lines are delimited by a line break, which is a CRLF |
| 398 | * sequence (US-ASCII decimal 13, followed by US-ASCII decimal 10). |
| 399 | * |
| 400 | * <p>Lines of text SHOULD NOT be longer than 75 octets, excluding the line |
| 401 | * break. Long content lines SHOULD be split into a multiple line |
| 402 | * representations using a line "folding" technique. That is, a long line can |
| 403 | * be split between any two characters by inserting a CRLF immediately |
| 404 | * followed by a single linear white space character (i.e., SPACE, US-ASCII |
| 405 | * decimal 32 or HTAB, US-ASCII decimal 9). Any sequence of CRLF followed |
| 406 | * immediately by a single linear white space character is ignored (i.e., |
| 407 | * removed) when processing the content type. |
| 408 | */ |
| 409 | public static String fold(String unfoldedIcalContent) { |
| 410 | return FOLD_RE.matcher(unfoldedIcalContent).replaceAll("$0\r\n "); |
| 411 | } |
| 412 | |
| 413 | public static String unfold(String foldedIcalContent) { |
| 414 | return IGNORABLE_ICAL_WHITESPACE_RE.matcher( |
| 415 | foldedIcalContent).replaceAll(""); |
| 416 | } |
| 417 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 418 | private static void addPropertyForDateStr(ICalendar.Component component, |
| 419 | String propertyName, |
| 420 | String dateStr) { |
| 421 | if (TextUtils.isEmpty(dateStr)) { |
| 422 | return; |
| 423 | } |
| 424 | |
| 425 | ICalendar.Property prop = new ICalendar.Property(propertyName); |
| 426 | String tz = null; |
| 427 | int tzidx = dateStr.indexOf(";"); |
| 428 | if (tzidx != -1) { |
| 429 | tz = dateStr.substring(0, tzidx); |
| 430 | dateStr = dateStr.substring(tzidx + 1); |
| 431 | } |
| 432 | if (!TextUtils.isEmpty(tz)) { |
| 433 | prop.addParameter(new ICalendar.Parameter("TZID", tz)); |
| 434 | } |
| 435 | prop.setValue(dateStr); |
| 436 | component.addProperty(prop); |
| 437 | } |
| 438 | |
| 439 | private static String computeDuration(Time start, |
| 440 | ICalendar.Component component) { |
| 441 | // see if a duration is defined |
| 442 | ICalendar.Property durationProperty = |
| 443 | component.getFirstProperty("DURATION"); |
| 444 | if (durationProperty != null) { |
| 445 | // just return the duration |
| 446 | return durationProperty.getValue(); |
| 447 | } |
| 448 | |
| 449 | // must compute a duration from the DTEND |
| 450 | ICalendar.Property dtendProperty = |
| 451 | component.getFirstProperty("DTEND"); |
| 452 | if (dtendProperty == null) { |
| 453 | // no DURATION, no DTEND: 0 second duration |
| 454 | return "+P0S"; |
| 455 | } |
| 456 | ICalendar.Parameter endTzidParameter = |
| 457 | dtendProperty.getFirstParameter("TZID"); |
| 458 | String endTzid = (endTzidParameter == null) |
| 459 | ? start.timezone : endTzidParameter.value; |
| 460 | |
| 461 | Time end = new Time(endTzid); |
| 462 | end.parse(dtendProperty.getValue()); |
Ken Shirriff | 1ce2e2e | 2009-08-21 14:21:59 -0700 | [diff] [blame] | 463 | long durationMillis = end.toMillis(false /* use isDst */) |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 464 | - start.toMillis(false /* use isDst */); |
| 465 | long durationSeconds = (durationMillis / 1000); |
Ken Shirriff | 1ce2e2e | 2009-08-21 14:21:59 -0700 | [diff] [blame] | 466 | if (start.allDay && (durationSeconds % 86400) == 0) { |
| 467 | return "P" + (durationSeconds / 86400) + "D"; // Server wants this instead of P86400S |
| 468 | } else { |
| 469 | return "P" + durationSeconds + "S"; |
| 470 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 471 | } |
| 472 | |
| 473 | private static String flattenProperties(ICalendar.Component component, |
| 474 | String name) { |
| 475 | List<ICalendar.Property> properties = component.getProperties(name); |
| 476 | if (properties == null || properties.isEmpty()) { |
| 477 | return null; |
| 478 | } |
| 479 | |
| 480 | if (properties.size() == 1) { |
| 481 | return properties.get(0).getValue(); |
| 482 | } |
| 483 | |
| 484 | StringBuilder sb = new StringBuilder(); |
| 485 | |
| 486 | boolean first = true; |
| 487 | for (ICalendar.Property property : component.getProperties(name)) { |
| 488 | if (first) { |
| 489 | first = false; |
| 490 | } else { |
| 491 | // TODO: use commas. our RECUR parsing should handle that |
| 492 | // anyway. |
| 493 | sb.append(RULE_SEPARATOR); |
| 494 | } |
| 495 | sb.append(property.getValue()); |
| 496 | } |
| 497 | return sb.toString(); |
| 498 | } |
| 499 | |
| 500 | private static String extractDates(ICalendar.Property recurrence) { |
| 501 | if (recurrence == null) { |
| 502 | return null; |
| 503 | } |
| 504 | ICalendar.Parameter tzidParam = |
| 505 | recurrence.getFirstParameter("TZID"); |
| 506 | if (tzidParam != null) { |
| 507 | return tzidParam.value + ";" + recurrence.getValue(); |
| 508 | } |
| 509 | return recurrence.getValue(); |
| 510 | } |
| 511 | } |