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#!/usr/bin/awk -f
# ex: ft=awk
#
# awk filter for aerc to parse text/calendar mime-types
#
# Based on the ical2org.awk script by Eric S Fraga and updated by Guide Van
# Hoecke. Adapted to aerc by Koni Marti <koni.marti@gmail.com>
#
BEGIN {
UIDS[0];
people_attending[0];
people_partstat[0];
people_rsvp[0];
# use a colon to separate the type of data line from the actual contents
FS = ":";
}
{
# remove carriage return from every line
gsub(/\r/, "")
}
/^[ ]/ {
# this block deals with the continuation lines that start with a whitespace
#
line = $0
# remove trailing whitespaces
gsub(/^[ ]/, "", line)
# assumes continuation lines start with a space
if (indescription) {
entry = entry line
} else if (insummary) {
summary = summary line
} else if (inattendee) {
attendee = attendee line
} else if (inorganizer) {
organizer = organizer line
} else if (inlocation) {
location = location unescape(line, 0)
}
}
/^BEGIN:VALARM/,/^END:VALARM/ {
next
}
/^BEGIN:VEVENT/ {
# start of an event: initialize global values used for each event
start_date = "";
end_date = "";
entry = ""
id = ""
indescription = 0;
insummary = 0
inattendee = 0
inorganizer = 0
inlocation = 0
location = ""
status = ""
summary = ""
attendee = ""
organizer = ""
rrend = ""
rcount = ""
intfreq = ""
idx = 0
delete people_attending;
delete people_partstat;
delete people_rsvp;
}
/^[A-Z]/ {
if (attendee != "" && inattendee==1)
add_attendee(attendee)
if (organizer != "" && inorganizer==1)
organizer = find_full_name(organizer)
indescription = 0;
insummary = 0;
inattendee = 0;
inorganizer = 0;
inlocation = 0;
}
/^DTSTART[:;]/ {
tz = get_value($0, "TZID=[^:;]*", "=")
start_date = datetimestring($2, tz);
}
/^DTEND[:;]/ {
tz = get_value($0, "TZID=[^:;]*", "=")
end_date = datetimestring($2, tz);
}
/^RRULE[:]/ {
freq = get_value($0, "FREQ=[^:;]*", "=")
interval = get_value($0, "INTERVAL=[^:;]*", "=")
rrend = get_value($0, "UNTIL=[^:;]*", "=")
rcount = get_value($0, "COUNT=[^:;]*", "=")
intfreq = tolower(freq)
if (interval != "")
intfreq = " +" interval intfreq
}
/^METHOD/ {
method = $2
}
/^UID/ {
line = prepare($0)
id = line
}
/^STATUS/ {
line = prepare($0)
status = line
}
/^DESCRIPTION/ {
line = prepare($0)
entry = entry line
indescription = 1;
}
/^SUMMARY/ {
line = prepare($0)
summary = line
insummary = 1;
}
/^ORGANIZER/ {
organizer = $0
inorganizer = 1;
}
/^LOCATION/ {
line = prepare($0)
location = unescape(line, 0);
inlocation = 1;
}
/^ATTENDEE/ {
attendee = $0
inattendee = 1;
}
/^END:VEVENT/ {
#output event
if (method != "") {
printf "\n This is a meeting %s\n\n", method
}
fmt = " %-14s%s\n"
is_duplicate = (id in UIDS);
if(is_duplicate == 0) {
printf fmt, "SUMMARY", unescape(summary, 0)
if(location != "")
printf fmt, "LOCATION", location
if(organizer != "")
printf fmt, "ORGANIZER", organizer
for (idx in people_attending) {
printf fmt, "ATTENDEE [" idx "]", people_attending[idx]
partstat = people_partstat[idx]
if (partstat != "") {
printf fmt, "", "STATUS\t" partstat
}
rsvp = people_rsvp[idx]
if (rsvp != "") {
printf fmt, "", "RSVP\t" rsvp
}
}
printf fmt, "START", start_date
printf fmt, "END", end_date
if (intfreq != "") {
printf "\n"fmt, "RECURRENCE", intfreq
if (rcount != "")
printf fmt, "COUNTS", rcount
if (rrend != "")
printf fmt, "END DATE", rrend
}
if(entry != "")
print "\n" unescape(entry, 1);
UIDS[id] = 1;
}
}
func prepare(line) {
gsub($1, "", line)
gsub(/^[: ]/, "", line)
return line
}
function unescape(input, preserve_newlines)
{
ret = input
gsub(/\\,/, ",", ret)
gsub(/\\;/, ";", ret)
if (preserve_newlines)
gsub(/\\n/, "\n", ret)
else
gsub(/\\n/, " ", ret)
return ret
}
function datetimestring(input, tzInput)
{
timestr = input
pos = index(timestr, "T")
if (pos < 0) {
return timestr
}
date = substr(timestr, 1, pos)
time = substr(timestr, pos+1, length(timestr))
year = substr(date, 1, 4)
month = substr(date, 5, 2)
day = substr(date, 7, 2)
hour = substr(time, 1, 2)
min = substr(time, 3, 2)
sec = substr(time, 5, 2)
return sprintf("%4d/%02d/%02d %02d:%02d:%02d %s", year, month, day, hour, min, sec, tzInput)
}
function add_attendee(attendee)
{
CN = find_full_name(attendee)
if (CN != "") {
idx = idx + 1
people_attending[idx] = CN;
people_partstat[idx] = get_value(attendee, "PARTSTAT=[^;:]+", "=")
people_rsvp[idx] = get_value(attendee, "RSVP=[^;:]+", "=")
}
}
function find_full_name(line)
{
name = get_value(line, "CN=[^;:]+", "=")
gsub(/"[^"]*"/,"",line)
email = get_value(line, "(mailto|MAILTO):[^;]+", ":")
if (name == "") {
return sprintf("<%s>", email)
} else {
return sprintf("%s <%s>", name, email)
}
}
function get_value(line, regexp, sep) {
value = ""
match(line, regexp)
{
z = split(substr(line,RSTART,RLENGTH),data,sep)
if (z > 1) {
value = data[2]
}
}
return value
}
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