Convert raw ical text into a list of items

This function breaks-up the iCalendar object into a list. By default it breaks it into events, where the number of events is the number of BEGIN:VEVENT event initiation lines (assumes all events start and end with :VEVENT), as per the specification (see ic_spec()).

ic_list(x, pattern = ":VEVENT", include_pattern = FALSE)

Arguments

x	Lines read-in in from an iCal file
pattern	A text string to search from (an ical field)
include_pattern	should the pattern be included in the output? FALSE by default.

Examples

ic_list(ical_example)
#> [[1]]
#>  [1] "DTSTART:20180809T160000Z"                 
#>  [2] "DTEND:20180809T163000Z"                   
#>  [3] "DTSTAMP:20180810T094100Z"                 
#>  [4] "UID:1119ejg4vug5758527atjcrqj3@google.com"
#>  [5] "CREATED:20180807T133712Z"                 
#>  [6] "DESCRIPTION:\\n"                          
#>  [7] "LAST-MODIFIED:20180807T133712Z"           
#>  [8] "LOCATION:"                                
#>  [9] "SEQUENCE:0"                               
#> [10] "STATUS:CONFIRMED"                         
#> [11] "SUMMARY:ical programming mission"         
#> [12] "TRANSP:OPAQUE"                            
#> 
ics_file <- system.file("extdata", "england-and-wales.ics", package = "ical")
x = readLines(ics_file)
#> Warning: file("") only supports open = "w+" and open = "w+b": using the former
ics_list = ic_list(x)
ics_list[1:2]
#> [[1]]
#> NULL
#> 
#> [[2]]
#> NULL
#> 
ic_list(x, include_pattern = TRUE)
#> list()