/* File apptcal. The ApptCalendar ADT implemented using an array.*/ #include #include #include #include #include #include "bool.h" #include "apptcal.h" #include "appt.h" #include "time.h" /* DayStrings will be used to print out days and to convert strings into our enum type */ char *DayStrings[5] = {"Monday", "Tuesday", "Wednesday", "Thursday", "Friday"}; /* ApptCalInit() *---------------------------------------------------------------- * Initialize the appointment calendar */ void ApptCalInit(Calendar *C) { int i, j; for(i = Monday; i <= Friday; i++) for(j = 0; j < MAX_APPTS; j++) ApptInit(&(C->WorkWeek[i][j])); C->currentDay = Monday; strncpy(C->fileName, "apptcal.dat", sizeof("apptcal.dat") +1); } /* DisplayDay *---------------------------------------------------------------- */ void DisplayDay(Workday day) { printf("%s", DayStrings[day]); } /* MakeDayFromString *---------------------------------------------------------------- */ Workday MakeDayFromString(char *dayStr) { Workday i; for(i = Monday; i <=Friday; i++) if(strncmp(DayStrings[i], dayStr, sizeof(dayStr)) == 0) return i; /* Did not find a valid day */ return -1; } /* ConvertTimeToIndex *---------------------------------------------------------------- * Return the index into DayAppts that corresponds to time. */ int ConvertTimeToIndex (ClockTime time) { int hour = GetHour(time); int minute = GetMinute(time); assert( hour >= 9 && hour - 9 <= MAX_APPTS/2); assert( 0 <= minute && minute <= 59); return ((hour - 9) * 60 + minute) / 30; /*note: integer division*/ } /* ConvertIndexToTime *---------------------------------------------------------------- * Return the time corresponding to index. */ ClockTime ConvertIndexToTime(int index) { ClockTime t; int hour = 9 + index / 2; int minute = 30 * (index % 2); assert( hour >= 9 && hour - 9 <= MAX_APPTS/2); assert( 0 <= minute && minute <= 59); t = MakeTime(hour, minute); return t; } /* ValidBooking *---------------------------------------------------------------- * Return true iff the appointment slot on day between startTime * and endTime is not used by other appointments. */ boolean ValidBooking(Calendar *C, Workday day, ClockTime startTime, ClockTime endTime) { int i; int startIndex = ConvertTimeToIndex(startTime); /* Special case to deal with appointments that end in the hour or * half hour, subtract 1 minute before finding the index*/ int endIndex = ConvertTimeToIndex(TimeDifference(MakeTime(0, 1), endTime)); if(startIndex < 0 || endIndex >= MAX_APPTS) { printf("Appointment is outside the bookable hours.\n"); return FALSE; } for(i = startIndex; i <= endIndex; i++) if(!Empty(C->WorkWeek[day][i])) return FALSE; return TRUE; } /* CalendarBook *---------------------------------------------------------------- */ boolean CalendarBook(Calendar *C, Workday day, ClockTime startTime, ClockTime endTime, char *message, boolean fixed) { int i; int startIndex, endIndex; if(!ValidBooking(C, day, startTime, endTime)) return FALSE; else { /* It will fit.*/ startIndex = ConvertTimeToIndex(startTime); /* Special case to deal with appointments that end in the hour or half hour, subtract 1 minute before finding the index. */ endIndex = ConvertTimeToIndex(TimeDifference(MakeTime(0,1), endTime)); /* Store appointment in the locations in the calendar*/ for(i = startIndex; i <= endIndex; i++) { SetAppt(&(C->WorkWeek[day][i]), startTime, endTime, message, fixed); } return TRUE; } } /* CalendarFit *---------------------------------------------------------------- */ boolean CalendarFit(Calendar *C, Workday day, ClockTime totalTime, char *message, boolean fixed, ClockTime *startTime, ClockTime *endTime) { /* <<< YOU COMPLETE THIS SUBPROGRAM >>> */ } /* CalendarFind *---------------------------------------------------------------- */ boolean CalendarFind(Calendar *C, char *message, Workday *day, ClockTime *startTime, ClockTime *endTime) { Workday i; int j; for(i = Monday; i <= Friday; i++) { for(j = 0; j < MAX_APPTS; j++) { if(!Empty(C->WorkWeek[i][j])) { if(strncmp(message, GetMessage(&(C->WorkWeek[i][j])), MAX_MESSAGE_LEN) == 0) { *day = i; *startTime = GetStartTime(C->WorkWeek[i][j]); *endTime = GetEndTime(C->WorkWeek[i][j]); return TRUE; } } } } return FALSE; } /* CalendarCancel *---------------------------------------------------------------- */ void CalendarCancel(Calendar *C, char *message) { int i; Workday day; ClockTime startTime, endTime; int startIndex, endIndex; boolean success; success = CalendarFind(C, message, &day, &startTime, &endTime); if(success) { startIndex = ConvertTimeToIndex(startTime); /* Special case to deal with appointments that end in the hour or half hour, subtract 1 minute before finding the index. */ endIndex = ConvertTimeToIndex(TimeDifference(MakeTime(0,1), endTime)); for(i = startIndex; i <= endIndex; i++) ClearAppt(&(C->WorkWeek[day][i])); } } /* CalendarClearDay *---------------------------------------------------------------- */ void CalendarClearDay(Calendar *C, Workday day) { int j; for(j = 0; j < MAX_APPTS; j++) ClearAppt(&(C->WorkWeek[day][j])); } /* CalendarClearWeek *----------------------------------------------------------------- */ void CalendarClearWeek(Calendar *C) { Workday day; for(day = Monday; day <= Friday; day++) { CalendarClearDay(C, day); } } /* CalendarViewDay *---------------------------------------------------------------- */ void CalendarViewDay(Calendar *C, Workday day) { /* <<< YOU COMPLETE THIS SUBPROGRAM >>> */ } /* CalendarViewToday *---------------------------------------------------------------- */ void CalendarViewToday(Calendar *C) { CalendarViewDay(C, C->currentDay); } /* CalendarNextDay *---------------------------------------------------------------- */ void CalendarNextDay(Calendar *C) { /* <<< YOU COMPLETE THIS SUBPROGRAM >>> */ } /* CalendarViewWeek *---------------------------------------------------------------- */ void CalendarViewWeek(Calendar *C) { /* <<< YOU COMPLETE THIS SUBPROGRAM >>> */ } /* CalendarSave *---------------------------------------------------------------- */ void CalendarSave(Calendar *C) { int i; Workday day; FILE *savefile = fopen(C->fileName, "wt"); assert(savefile != NULL); fprintf(savefile, "%s\n", DayStrings[C->currentDay]); /* For each day, print the whether the appointments are used;*/ /* if they are, print the appointment information.*/ for(day = Monday; day <= Friday; day++) { for(i = 0; i < MAX_APPTS; i++) { if(!Empty(C->WorkWeek[day][i]) && i == ConvertTimeToIndex(GetStartTime(C->WorkWeek[day][i]))) { fprintf(savefile, "%s\n", DayStrings[day]); SaveAppt(C->WorkWeek[day][i], savefile); } } } fclose(savefile); } /* CalendarLoad *---------------------------------------------------------------- */ void CalendarLoad(Calendar *C) { FILE *savefile = fopen(C->fileName, "rt"); Workday day; Appointment app; char curDayStr[DAY_LEN]; int res; assert(savefile != NULL); if((res = ReadString(curDayStr, sizeof(curDayStr), savefile)) == EOF) { printf("Trying to load invalid Calendar file, exiting.\n"); exit(-1); } C->currentDay = MakeDayFromString(curDayStr); if((res = ReadString(curDayStr, sizeof(curDayStr), savefile)) != EOF) res = LoadAppt(&app, savefile); day = MakeDayFromString(curDayStr); while(res != EOF) { CalendarBook(C, day, app.startTime, app.endTime, app.message, app.fixed); /* read in the next appointment*/ if((res = ReadString(curDayStr, sizeof(curDayStr), savefile)) != EOF){ res = LoadAppt(&app, savefile); day = MakeDayFromString(curDayStr); } } fclose(savefile); }