src/r_task.cc

   1 ///
   2 /// \file       r_task.cc
   3 ///             Record parsing class for the task database.
   4 ///
   5
   6 /*
   7     Copyright (C) 2005-2007, Net Direct Inc. (http://www.netdirect.ca/)
   8     Copyright (C) 2007, Brian Edginton
   9
  10     This program is free software; you can redistribute it and/or modify
  11     it under the terms of the GNU General Public License as published by
  12     the Free Software Foundation; either version 2 of the License, or
  13     (at your option) any later version.
  14
  15     This program is distributed in the hope that it will be useful,
  16     but WITHOUT ANY WARRANTY; without even the implied warranty of
  17     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  18
  19     See the GNU General Public License in the COPYING file at the
  20     root directory of this project for more details.
  21 */
  22
  23 #include "r_task.h"
  24 #include "record-internal.h"
  25 #include "protostructs.h"
  26 #include "data.h"
  27 #include "time.h"
  28 #include "debug.h"
  29 #include <ostream>
  30 #include <iomanip>
  31
  32 using namespace std;
  33 using namespace Barry::Protocol;
  34
  35 namespace Barry {
  36
  37 ///////////////////////////////////////////////////////////////////////////////
  38 // Task Class
  39
  40 // Task Field Codes
  41 #define TSKFC_TASK_TYPE         0x01
  42 #define TSKFC_TITLE             0x02
  43 #define TSKFC_NOTES             0x03
  44 #define TSKFC_START_TIME        0x05
  45 #define TSKFC_DUE_TIME          0x06
  46 #define TSKFC_DUE_FLAG          0x08
  47 #define TSKFC_STATUS            0x09
  48 #define TSKFC_PRIORITY          0x0a
  49 #define TSKFC_RECURRENCE_DATA   0x0c
  50 #define TSKFC_ALARM_TYPE        0x0e
  51 #define TSKFC_ALARM_TIME        0x0f
  52 #define TSKFC_TIMEZONE_CODE     0x10
  53 #define TSKFC_CATEGORIES        0x11
  54 #define TSKFC_END               0xffff
  55
  56 FieldLink<Task> TaskFieldLinks[] = {
  57         { TSKFC_TITLE,      "Summary",     0, 0, &Task::Summary, 0, 0 },
  58         { TSKFC_NOTES,      "Notes",       0, 0, &Task::Notes, 0, 0 },
  59         { TSKFC_START_TIME, "Start Time",  0, 0, 0, 0, &Task::StartTime },
  60         { TSKFC_DUE_TIME,   "Due Time",    0, 0, 0, 0, &Task::DueTime },
  61         { TSKFC_ALARM_TIME, "Alarm Time",  0, 0, 0, 0, &Task::AlarmTime },
  62         { TSKFC_CATEGORIES, "Categories",  0, 0, &Task::Categories, 0, 0 },
  63         { TSKFC_END,        "End of List", 0, 0, 0, 0, 0 },
  64 };
  65
  66 Task::Task()
  67 {
  68         Clear();
  69 }
  70
  71 Task::~Task()
  72 {
  73 }
  74
  75 const unsigned char* Task::ParseField(const unsigned char *begin,
  76                                       const unsigned char *end)
  77 {
  78         const CommonField *field = (const CommonField *) begin;
  79
  80         // advance and check size
  81         begin += COMMON_FIELD_HEADER_SIZE + btohs(field->size);
  82         if( begin > end )       // if begin==end, we are ok
  83                 return begin;
  84
  85         if( !btohs(field->size) )   // if field has no size, something's up
  86                 return begin;
  87
  88         if( field->type == TSKFC_TASK_TYPE ) {
  89                 if( ( TaskType = field->u.raw[0] ) != 't' ) {
  90                         throw Error("Task::ParseField: Task Type is not 't'");
  91                 }
  92                 return begin;
  93         }
  94
  95         // cycle through the type table
  96         for(    FieldLink<Task> *b = TaskFieldLinks;
  97                 b->type != TSKFC_END;
  98                 b++ )
  99         {
 100                 if( b->type == field->type ) {
 101                         if( b->strMember ) {
 102                                 std::string &s = this->*(b->strMember);
 103                                 s.assign((const char *)field->u.raw, btohs(field->size)-1);
 104                                 return begin;   // done!
 105                         }
 106                         else if( b->timeMember && btohs(field->size) == 4 ) {
 107                                 time_t &t = this->*(b->timeMember);
 108                                 t = min2time(field->u.min1900);
 109                                 return begin;
 110                         }
 111                 }
 112         }
 113         // handle special cases
 114         switch( field->type )
 115         {
 116         case TSKFC_PRIORITY:
 117                 if( field->u.raw[0] > Low ) {
 118                         throw Error( "Task::ParseField: priority field out of bounds" );
 119                 }
 120                 else {
 121                         PriorityFlag = (PriorityFlagType)field->u.raw[0];
 122                 }
 123                 return begin;
 124
 125         case TSKFC_STATUS:
 126                 if( field->u.raw[0] > Deferred ) {
 127                         throw Error( "Task::ParseField: priority field out of bounds" );
 128                 }
 129                 else {
 130                         StatusFlag = (StatusFlagType)field->u.raw[0];
 131                 }
 132                 return begin;
 133
 134         case TSKFC_TIMEZONE_CODE:
 135                 if( btohs(field->size) == 4 ) {
 136                         TimeZoneCode = btohs(field->u.code);
 137                 }
 138                 else {
 139                         throw Error("Task::ParseField: not enough data in time zone code field");
 140                 }
 141                 return begin;
 142
 143         case TSKFC_RECURRENCE_DATA:
 144                 if( btohs(field->size) >= CALENDAR_RECURRENCE_DATA_FIELD_SIZE ) {
 145                         Recurring = true;
 146                         ParseRecurrenceData(&field->u.raw[0]);
 147                 }
 148                 else {
 149                         throw Error("Task::ParseField: not enough data in recurrence data field");
 150                 }
 151                 return begin;
 152
 153         case TSKFC_DUE_FLAG:
 154                 DueDateFlag = field->u.raw[0];
 155                 return begin;
 156
 157         case TSKFC_ALARM_TYPE:
 158                 if( field->u.raw[0] > Relative ) {
 159                         throw Error("Task::ParseField: AlarmType out of bounds" );
 160                 }
 161                 else {
 162                         AlarmType = (AlarmFlagType)field->u.raw[0];
 163                 }
 164                 return begin;
 165         }
 166
 167         // if still not handled, add to the Unknowns list
 168         UnknownField uf;
 169         uf.type = field->type;
 170         uf.data.assign((const char*)field->u.raw, btohs(field->size));
 171         Unknowns.push_back(uf);
 172
 173         // return new pointer for next field
 174         return begin;
 175 }
 176
 177 // this function assumes the size has already been checked
 178 void Task::ParseRecurrenceData(const void *data)
 179 {
 180         const CalendarRecurrenceDataField *rec =
 181                 (const CalendarRecurrenceDataField*) data;
 182
 183         Interval = btohs(rec->interval);
 184         if( Interval < 1 )
 185                 Interval = 1;   // must always be >= 1
 186
 187         if( rec->endTime == 0xffffffff ) {
 188                 Perpetual = true;
 189         }
 190         else {
 191                 RecurringEndTime = min2time(rec->endTime);
 192                 Perpetual = false;
 193         }
 194
 195         switch( rec->type )
 196         {
 197         case CRDF_TYPE_DAY:
 198                 RecurringType = Day;
 199                 // no extra data
 200                 break;
 201
 202         case CRDF_TYPE_MONTH_BY_DATE:
 203                 RecurringType = MonthByDate;
 204                 DayOfMonth = rec->u.month_by_date.monthDay;
 205                 break;
 206
 207         case CRDF_TYPE_MONTH_BY_DAY:
 208                 RecurringType = MonthByDay;
 209                 DayOfWeek = rec->u.month_by_day.weekDay;
 210                 WeekOfMonth = rec->u.month_by_day.week;
 211                 break;
 212
 213         case CRDF_TYPE_YEAR_BY_DATE:
 214                 RecurringType = YearByDate;
 215                 DayOfMonth = rec->u.year_by_date.monthDay;
 216                 MonthOfYear = rec->u.year_by_date.month;
 217                 break;
 218
 219         case CRDF_TYPE_YEAR_BY_DAY:
 220                 RecurringType = YearByDay;
 221                 DayOfWeek = rec->u.year_by_day.weekDay;
 222                 WeekOfMonth = rec->u.year_by_day.week;
 223                 MonthOfYear = rec->u.year_by_day.month;
 224                 break;
 225
 226         case CRDF_TYPE_WEEK:
 227                 RecurringType = Week;
 228
 229                 // Note: this simple copy is only possible since
 230                 // the CAL_WD_* constants are the same as CRDF_WD_* constants.
 231                 // If this ever changes, this code will need to change.
 232                 WeekDays = rec->u.week.days;
 233                 break;
 234
 235         default:
 236                 eout("Unknown recurrence data type: 0x"
 237                         << setbase(16) << (unsigned int) rec->type);
 238                 throw Error("Unknown recurrence data type");
 239         }
 240 }
 241
 242 // this function assumes there is CALENDAR_RECURRENCE_DATA_FIELD_SIZE bytes
 243 // available in data
 244 void Task::BuildRecurrenceData(void *data)
 245 {
 246         if( !Recurring )
 247                 throw Error("Task::BuildRecurrenceData: Attempting to build recurrence data on non-recurring record.");
 248
 249         CalendarRecurrenceDataField *rec = (CalendarRecurrenceDataField*) data;
 250
 251         // set all to zero
 252         memset(data, 0, CALENDAR_RECURRENCE_DATA_FIELD_SIZE);
 253
 254         rec->interval = htobs(Interval);
 255         rec->startTime = time2min(StartTime);
 256         if( Perpetual )
 257                 rec->endTime = 0xffffffff;
 258         else
 259                 rec->endTime = time2min(RecurringEndTime);
 260
 261         switch( RecurringType )
 262         {
 263         case Day:
 264                 rec->type = CRDF_TYPE_DAY;
 265                 // no extra data
 266                 break;
 267
 268         case MonthByDate:
 269                 rec->type = CRDF_TYPE_MONTH_BY_DATE;
 270                 rec->u.month_by_date.monthDay = DayOfMonth;
 271                 break;
 272
 273         case MonthByDay:
 274                 rec->type = CRDF_TYPE_MONTH_BY_DAY;
 275                 rec->u.month_by_day.weekDay = DayOfWeek;
 276                 rec->u.month_by_day.week = WeekOfMonth;
 277                 break;
 278
 279         case YearByDate:
 280                 rec->type = CRDF_TYPE_YEAR_BY_DATE;
 281                 rec->u.year_by_date.monthDay = DayOfMonth;
 282                 rec->u.year_by_date.month = MonthOfYear;
 283                 break;
 284
 285         case YearByDay:
 286                 rec->type = CRDF_TYPE_YEAR_BY_DAY;
 287                 rec->u.year_by_day.weekDay = DayOfWeek;
 288                 rec->u.year_by_day.week = WeekOfMonth;
 289                 rec->u.year_by_day.month = MonthOfYear;
 290                 break;
 291
 292         case Week:
 293                 rec->type = CRDF_TYPE_WEEK;
 294
 295                 // Note: this simple copy is only possible since
 296                 // the CAL_WD_* constants are the same as CRDF_WD_* constants.
 297                 // If this ever changes, this code will need to change.
 298                 rec->u.week.days = WeekDays;
 299                 break;
 300
 301         default:
 302                 eout("Task::BuildRecurrenceData: "
 303                 "Unknown recurrence data type: " << rec->type);
 304                 throw Error("Task::BuildRecurrenceData: Unknown recurrence data type");
 305         }
 306 }
 307
 308 void Task::ParseHeader(const Data &data, size_t &offset)
 309 {
 310         // no header in Task records
 311 }
 312
 313 void Task::ParseFields(const Data &data, size_t &offset)
 314 {
 315         const unsigned char *finish = ParseCommonFields(*this,
 316         data.GetData() + offset, data.GetData() + data.GetSize());
 317         offset += finish - (data.GetData() + offset);
 318 }
 319
 320 void Task::Clear()
 321 {
 322         Summary.clear();
 323         Notes.clear();
 324         Categories.clear();
 325         StartTime = DueTime = AlarmTime = 0;
 326
 327         PriorityFlag = (PriorityFlagType)0;
 328         StatusFlag = (StatusFlagType)0;
 329         AlarmType = (AlarmFlagType)0;
 330
 331         TaskType = 0;
 332
 333         Perpetual = false;
 334         DueDateFlag = false;
 335         Recurring = false;
 336
 337         TimeZoneCode = GetTimeZoneCode( 0, 0 );
 338
 339         Unknowns.clear();
 340 }
 341
 342 void Task::Dump(std::ostream &os) const
 343 {
 344         static const char *PriorityName[] = { "High", "Normal", "Low" };
 345         static const char *StatusName[] = { "Not Started", "In Progress",
 346                 "Completed", "Waiting", "Deferred" };
 347         static const char *DayNames[] = { "Sun", "Mon", "Tue", "Wed",
 348                 "Thu", "Fri", "Sat" };
 349         static const char *MonthNames[] = { "Jan", "Feb", "Mar", "Apr",
 350                 "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
 351         static const char *AlarmTypeName[] = { "None", "By Date", "Relative" };
 352
 353         os << "Task entry: 0x" << setbase(16) << RecordId
 354            << " (" << (unsigned int)RecType << ")\n";
 355
 356         // cycle through the type table
 357         for(    const FieldLink<Task> *b = TaskFieldLinks;
 358                 b->type != TSKFC_END;
 359                 b++ )
 360         {
 361                 if( b->strMember ) {
 362                         const std::string &s = this->*(b->strMember);
 363                         if( s.size() )
 364                                 os << "   " << b->name << ": " << s << "\n";
 365                 }
 366                 else if( b->timeMember ) {
 367                         time_t t = this->*(b->timeMember);
 368                         if( t > 0 )
 369                                 os << "   " << b->name << ": " << ctime(&t);
 370                 }
 371         }
 372
 373         os << "   Priority: " << PriorityName[PriorityFlag] << "\n";
 374         os << "   Status: " << StatusName[StatusFlag] << "\n";
 375         if( AlarmType ) {
 376                 os << "   Alarm Type: " << AlarmTypeName[AlarmType] << "\n";
 377         }
 378
 379         // print recurrence data if available
 380         os << "   Recurring: " << (Recurring ? "yes" : "no") << "\n";
 381         if( Recurring ) {
 382                 switch( RecurringType )
 383                 {
 384                 case Day:
 385                         os << "      Every day.\n";
 386                         break;
 387
 388                 case MonthByDate:
 389                         os << "      Every month on the "
 390                            << DayOfMonth
 391                            << (DayOfMonth == 1 ? "st" : "")
 392                            << (DayOfMonth == 2 ? "nd" : "")
 393                            << (DayOfMonth == 3 ? "rd" : "")
 394                            << (DayOfMonth > 3  ? "th" : "")
 395                            << "\n";
 396                         break;
 397
 398                 case MonthByDay:
 399                         os << "      Every month on the "
 400                            << DayNames[DayOfWeek]
 401                            << " of week "
 402                            << WeekOfMonth
 403                            << "\n";
 404                         break;
 405
 406                 case YearByDate:
 407                         os << "      Every year on "
 408                            << MonthNames[MonthOfYear-1]
 409                            << " " << DayOfMonth << "\n";
 410                         break;
 411
 412                 case YearByDay:
 413                         os << "      Every year in " << MonthNames[MonthOfYear-1]
 414                            << " on "
 415                            << DayNames[DayOfWeek]
 416                            << " of week " << WeekOfMonth << "\n";
 417                         break;
 418
 419                 case Week:
 420                         os << "      Every week on: ";
 421                         if( WeekDays & CAL_WD_SUN ) os << "Sun ";
 422                         if( WeekDays & CAL_WD_MON ) os << "Mon ";
 423                         if( WeekDays & CAL_WD_TUE ) os << "Tue ";
 424                         if( WeekDays & CAL_WD_WED ) os << "Wed ";
 425                         if( WeekDays & CAL_WD_THU ) os << "Thu ";
 426                         if( WeekDays & CAL_WD_FRI ) os << "Fri ";
 427                         if( WeekDays & CAL_WD_SAT ) os << "Sat ";
 428                         os << "\n";
 429                         break;
 430
 431                 default:
 432                         os << "      Unknown recurrence type\n";
 433                         break;
 434                 }
 435
 436                 os << "      Interval: " << Interval << "\n";
 437
 438                 if( Perpetual )
 439                         os << "      Ends: never\n";
 440                 else
 441                         os << "      Ends: " << ctime(&RecurringEndTime);
 442         }
 443
 444         os << Unknowns;
 445         os << "\n\n";
 446 }
 447
 448 } // namespace Barry
 449