modified: src/planner.c

modified:   src/test.c

src/planner.c

@@ -31,6 +31,7 @@ void llistPrintT(llist *head) {
     c = c->next;
   }
 }
+int exportiCal(llist *ev_ll);
 // print Event to stdout
 void printEvent(Event *s) {
   char st[26];
@@ -254,8 +255,117 @@ llist *genPlan(llist *head, time_t timeAvail) {
 
   planLog("END GEN PLAN", 0);
 
+  exportiCal(events_ll);
   // llistFreeT(head);
   // send updated tasks to db for storage
 
   return events_ll;
 }
+
+const char *iCalHeader = "BEGIN:VCALENDAR\r\n"
+                         "VERSION:2.0\r\n"
+                         "PRODID:-//hacksw/handcal//NONSGML v1.0//EN\r\n";
+const char *iCalEvent = "BEGIN:VEVENT\r\n"
+                        "UID:%s%d\r\n"
+                        "DTSTAMP:%s\r\n"
+                        "DTSTART:%s\r\n"
+                        "DTEND:%s\r\n"
+                        "SUMMARY:%s\r\n"
+                        "END:VEVENT\r\n";
+
+const char *iCalFileExtension = "ics";
+
+/*
+ *
+ *
+ *The body of the iCalendar object (the icalbody) contains single-line Calendar
+ * Properties that apply to the entire calendar, as well as one or more blocks
+ * of multiple lines that each define a Calendar Component such as an event,
+ * journal entry, alarm, or one of several other types. Here is a simple example
+ * of an iCalendar object with a single calendar containing a single Calendar
+ * Component, a "Bastille Day Party" event starting at 5pm on July 14, 1997, and
+ * ending at 4am the following morning:[10]
+
+
+
+BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//hacksw/handcal//NONSGML v1.0//EN
+BEGIN:VEVENT
+UID:uid1@example.com
+ORGANIZER;CN=John Doe:MAILTO:john.doe@example.com
+DTSTART:19970714T170000Z
+DTEND:19970715T040000Z
+SUMMARY:Bastille Day Party
+GEO:48.85299;2.36885
+END:VEVENT
+END:VCALENDAR
+
+
+The UID field distributes updates when a scheduled event changes. When the event
+is first generated a globally unique identifier is created. If a later event is
+distributed with the same UID, it replaces the original one. An example UID
+might be Y2007S2C131M5@example.edu, for the 5th meeting of class 131 in semester
+2 at a hypothetical college. Email-style UIDs are now considered bad practice,
+with a UUID recommended instead.[11]
+
+The most common representation of date and time is a tz timestamp such as
+20010911T124640Z with the format <year (4 digits)><month (2)><day (2)>T<hour
+(2)><minute (2)><second (2)>Z for a total fixed length of 16 characters. Z
+indicates the use of UTC (referring to its Zulu time zone).[12] When used in
+DTSTART and DTEND properties, start times are inclusive while end times are not.
+This allows an event's end time to be the same as a consecutive event's start
+without those events overlapping and potentially creating (false) scheduling
+conflicts.[13]
+
+
+ */
+
+int exportiCal(llist *events_ll) {
+
+  llist *ev_ll = events_ll;
+
+  printf("%s", iCalHeader);
+
+  time_t now = time(NULL);
+  struct tm *lc = localtime(&now);
+
+  // gen filename & open for write
+  char nameBuf[32];
+  strftime(nameBuf, 32 - 12, "%F", lc);
+  strcat(nameBuf, "dayplan.ics");
+  FILE *fp = fopen(nameBuf, "w");
+  if (fp == NULL) {
+    planLog("fopen failed!!", 1);
+    return 1;
+  }
+  // write iCal header to file
+  fprintf(fp, "%s", iCalHeader);
+
+  // for every event in events_ll create VEVENT str and write to fp
+  int count = 0;
+  while (ev_ll != NULL) {
+    // gen iCal compatible time str
+    Event *current = ev_ll->data;
+    struct tm *startlc = localtime(&current->plannedStartTime);
+    struct tm *endlc = localtime(&current->plannedEndTime);
+    char timeStartBuf[17];
+    char timeEndBuf[17];
+    char timeStamp[17];
+    strftime(timeStamp, 17, "%Y%m%dT%k%M%SZ", lc);
+    strftime(timeStartBuf, 17, "%Y%m%dT%k%M%SZ", startlc);
+    strftime(timeEndBuf, 17, "%Y%m%dT%k%M%SZ", endlc);
+
+    fprintf(fp, iCalEvent, current->task->name, count, timeStamp, timeStartBuf,
+            timeEndBuf, current->task->name);
+    ev_ll = ev_ll->next;
+    count += 1;
+  }
+
+  // after all events are written end cal with
+  // END:VCALENDAR
+  fprintf(fp, "END:VCALENDAR\r\n");
+  fclose(fp);
+
+  return 0;
+}

src/test.c

@@ -39,7 +39,7 @@ int main() {
 
   // gnerate plan from task list in time
   struct tm *lc = localtime(&now);
-  lc->tm_hour += 4;                    // add available time;
+  lc->tm_hour += 7;                    // add available time;
   time_t maxTime = mktime(lc);         // create timestamp
   llist *l1 = genPlan(list1, maxTime); // return inked list of event;
   llistPrintE(l1);