filters: awk filter to parse text/calendar
Implement a filter to read text/calendar (ics) data with awk. Parses multiple events and shows the date recurrence if available. Awk alternative to the python filter. Signed-off-by: Koni Marti <koni.marti@gmail.com> Acked-by: Robin Jarry <robin@jarry.cc>
This commit is contained in:
Koni Marti
Robin Jarry
parent
a253e89bda
commit
527f602f36
2 changed files with 329 additions and 0 deletions
1
Makefile
1
Makefile
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@ -106,6 +106,7 @@ install: $(DOCS) aerc
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install -m644 config/accounts.conf $(DESTDIR)$(SHAREDIR)/accounts.conf
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install -m644 config/aerc.conf $(DESTDIR)$(SHAREDIR)/aerc.conf
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install -m644 config/binds.conf $(DESTDIR)$(SHAREDIR)/binds.conf
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install -m755 filters/calendar $(DESTDIR)$(SHAREDIR)/filters/calendar
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install -m755 filters/colorize $(DESTDIR)$(SHAREDIR)/filters/colorize
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install -m755 filters/hldiff $(DESTDIR)$(SHAREDIR)/filters/hldiff
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install -m755 filters/html $(DESTDIR)$(SHAREDIR)/filters/html
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328
filters/calendar
Executable file
328
filters/calendar
Executable file
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@ -0,0 +1,328 @@
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#!/usr/bin/awk -f
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# ex: ft=awk
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#
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# awk filter for aerc to parse text/calendar mime-types
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#
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# Based on the ical2org.awk script by Eric S Fraga and updated by Guide Van
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# Hoecke. Adapted to aerc by Koni Marti <koni.marti@gmail.com>
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#
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BEGIN {
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UIDS[0];
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people_attending[0];
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people_partstat[0];
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people_rsvp[0];
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# use a colon to separate the type of data line from the actual contents
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FS = ":";
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method = ""
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prodid = ""
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first = 0
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}
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/^[ ]/ {
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# assumes continuation lines start with a space
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if (indescription) {
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entry = entry gensub("\r", "", "g", gensub("^[ ]", "", 1, $0));
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} else if (insummary) {
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summary = summary gensub("\r", "", "g", gensub("^[ ]", "", 1, $0))
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} else if (inattendee) {
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attendee = attendee gensub("\r", "", "g", gensub("^[ ]", "", 1, $0))
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} else if (inorganizer) {
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organizer = organizer gensub("\r", "", "g", gensub("^[ ]", "", 1, $0))
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} else if (inlocation) {
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location = location unescape(gensub("\r", "", "g", $0), 0);
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}
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}
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/^BEGIN:VEVENT/ {
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# start of an event: initialize global values used for each event
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date = "";
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entry = ""
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id = ""
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indescription = 0;
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insummary = 0
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inattendee = 0
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inorganizer = 0
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inlocation = 0
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in_alarm = 0
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location = ""
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status = ""
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summary = ""
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attendee = ""
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organizer = ""
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rrend = ""
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rcount = ""
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intfreq = ""
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delete people_attending;
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delete people_partstat;
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delete people_rsvp;
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if (first == 0) {
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first = 1
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if (method != "")
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print " METHOD " method
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if (prodid != "")
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print " PRODID " prodid
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print ""
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}
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}
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/^BEGIN:VALARM/ {
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in_alarm = 1
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}
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/^END:VALARM/ {
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in_alarm = 0
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}
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/^[A-Z]/ {
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if (attendee != "" && inattendee==1)
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add_attendee(attendee)
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if (organizer != "" && inorganizer==1)
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organizer = find_full_name(organizer)
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indescription = 0;
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insummary = 0;
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inattendee = 0;
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inorganizer = 0;
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inlocation = 0;
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}
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/^DTSTART;VALUE=DATE/ {
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date = datestring($2);
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}
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/^DTEND;VALUE=DATE/ {
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end_date = datestring($2);
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}
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/^DTSTART[:;][^V]/ {
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tz = "";
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match($0, /TZID=([^:]*)/, a)
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{
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tz = a[1];
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}
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date = datetimestring($2, tz);
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}
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/^DTEND[:;][^V]/ {
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tz = "";
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match($0, /TZID=([^:]*)/, a)
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{
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tz = a[1];
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}
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end_date = datetimestring($2, tz);
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}
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/^RRULE:FREQ=(DAILY|WEEKLY|MONTHLY|YEARLY)/ {
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# TODO: handle BYDAY values for events that repeat weekly for multiple days
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# (e.g. a "Gym" event)
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# get the d, w, m or y value
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freq = tolower(gensub(/.*FREQ=(.).*/, "\\1", 1, $0))
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# get the interval, and use 1 if none specified
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interval = $0 ~ /INTERVAL=/ ? gensub(/.*INTERVAL=([0-9]+).*/, "\\1", 1, $0) : 1
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# get the enddate of the rule and use "" if none specified
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rrend = $0 ~ /UNTIL=/ ? datestring(gensub(/.*UNTIL=([0-9]{8}).*/, "\\1", 1, $0)) : ""
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rcount = $0 ~ /COUNT=/ ? gensub(/.*COUNT=([0-9]+).*/, "\\1", 1, $0) : ""
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# build the repetitor value
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intfreq = " +" interval freq
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}
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/^DESCRIPTION/ {
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if (!in_alarm) {
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entry = entry gensub("\r", "", "g", gensub($1":", "", 1, $0));
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indescription = 1;
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}
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}
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/^SUMMARY/ {
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if (!in_alarm) {
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summary = gensub("\r", "", "g", gensub($1":", "", 1, $0));
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insummary = 1;
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}
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}
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/^UID/ {
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if (!in_alarm) {
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id = gensub("\r", "", "g", $2);
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}
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}
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/^METHOD/ {
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method = gensub("\r", "", "g", $2);
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}
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/^PRODID/ {
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prodid = gensub("\r", "", "g", $2);
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}
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/^ORGANIZER/ {
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organizer = gensub("\r", "", "g", $0);
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inorganizer = 1;
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}
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/^LOCATION/ {
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location = unescape(gensub("\r", "", "g", $2), 0);
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inlocation = 1;
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}
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/^STATUS/ {
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status = gensub("\r", "", "g", $2);
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}
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/^ATTENDEE/ {
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attendee = gensub("\r", "", "g", $0);
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inattendee = 1;
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}
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/^END:VEVENT/ {
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#output event
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is_duplicate = (id in UIDS);
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if(is_duplicate == 0) {
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print "* SUMMARY " gensub("^[ ]+", "", "g", unescape(summary, 0))
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if(length(location))
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print " LOCATION " location
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if(organizer != "")
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print " ORGANIZER " organizer
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for (cn in people_attending) {
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print " ATTENDEE " cn
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partstat = people_partstat[cn]
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if (partstat != "") {
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print " STATUS " partstat
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}
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rsvp = people_rsvp[cn]
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if (rsvp != "") {
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print " RSVP " rsvp
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}
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}
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print " START " date
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print " END " end_date
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if (intfreq != "") {
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print ""
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print " RECURRENCE " intfreq
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if (rcount != "")
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print " COUNTS " rcount
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if (rrend != "")
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print " END DATE " rrend
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}
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print ""
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if(length(entry)>1)
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print gensub("^[ ]+", "", "g", unescape(entry, 1));
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UIDS[id] = 1;
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}
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}
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function unescape(input, preserve_newlines)
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{
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ret = gensub("\\\\,", ",", "g",
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gensub("\\\\;", ";", "g", input))
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if (preserve_newlines)
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ret = gensub("\\\\n", "\n", "g", ret)
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else
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ret = gensub("\\\\n", " ", "g", ret)
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return ret
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}
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function datetimestring(input, tz)
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{
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spec = match(input, "([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2})([0-9]{2})([0-9]{2}).*[\r]*", a);
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year = a[1]
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month = a[2]
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day = a[3]
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hour = a[4]
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min = a[5]
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sec = a[6]
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stamp = mktime(year" "month" "day" "hour" "min" "sec);
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if (input ~ /[0-9]{8}T[0-9]{6}Z/ ) {
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tz = "UTC"
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}
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return strftime("%Y-%m-%d %a %H:%M", stamp)" "tz;
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}
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function datestring(input)
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{
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spec = gensub("([0-9]{4})([0-9]{2})([0-9]{2}).*[\r]*", "\\1 \\2 \\3 00 00 00", "g", input);
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stamp = mktime(spec);
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return strftime("%Y-%m-%d %a", stamp);
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}
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function add_attendee(attendee)
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{
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CN = find_full_name(attendee)
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if (CN != "")
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people_attending[CN] = 1;
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if (CN != "") {
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match(attendee, /PARTSTAT=([^;]+)/, m)
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{
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people_partstat[CN] = m[1]
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}
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match(attendee, /RSVP=([^;]+)/, m)
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{
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people_rsvp[CN] = m[1]
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}
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}
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}
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function extract_email(line)
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{
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email = ""
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match(line,/:[ ]*(mailto|MAILTO):([^;]+)/, m)
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{
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email = m[2]
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}
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return email
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}
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function extract_name(line)
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{
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name = ""
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match(line,/CN="?([^;:"]+)/, m)
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{
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name = m[1]
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}
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return name
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}
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function find_full_name(line)
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{
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name = extract_name(line)
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email = extract_email(line)
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if (name == "") {
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if (email == "") {
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return ""
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} else {
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return name
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}
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}
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if (email == "")
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return name
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if (email == name)
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return "<"email">"
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return name" <"email">"
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}
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