filters: posix compliant rewrite of calendar filter
Rewrite of the awk calendar filter to make it posix compliant. Tested
with awk --posix (awk -V = GNU Awk 5.1.1). Also added some improvements
to readability and formatting.
This complements commit 3ef4a3ca05 ("filters: try and make awk scripts
posix compliant").
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
fb5558da81
commit
ab941ebc6a
1 changed files with 115 additions and 184 deletions
299
filters/calendar
299
filters/calendar
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@ -9,38 +9,48 @@
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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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}
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method = ""
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prodid = ""
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first = 0
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{
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# remove carriage return from every line
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gsub(/\r/, "")
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}
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/^[ ]/ {
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# this block deals with the continuation lines that start with a whitespace
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#
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line = $0
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# remove trailing whitespaces
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gsub(/^[ ]/, "", line)
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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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entry = entry line
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} else if (insummary) {
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summary = summary gensub("\r", "", "g", gensub("^[ ]", "", 1, $0))
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summary = summary line
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} else if (inattendee) {
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attendee = attendee gensub("\r", "", "g", gensub("^[ ]", "", 1, $0))
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attendee = attendee line
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} else if (inorganizer) {
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organizer = organizer gensub("\r", "", "g", gensub("^[ ]", "", 1, $0))
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organizer = organizer line
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} else if (inlocation) {
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location = location unescape(gensub("\r", "", "g", $0), 0);
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location = location unescape(line, 0)
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}
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}
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/^BEGIN:VALARM/,/^END:VALARM/ {
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next
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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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start_date = "";
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end_date = "";
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entry = ""
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id = ""
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@ -49,7 +59,6 @@ BEGIN {
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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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@ -60,27 +69,11 @@ BEGIN {
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rrend = ""
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rcount = ""
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intfreq = ""
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idx = 0
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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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@ -97,130 +90,99 @@ BEGIN {
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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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/^DTSTART[:;]/ {
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tz = get_value($0, "TZID=[^:;]*", "=")
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start_date = datetimestring($2, tz);
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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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/^DTEND[:;]/ {
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tz = get_value($0, "TZID=[^:;]*", "=")
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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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/^RRULE[:]/ {
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freq = get_value($0, "FREQ=[^:;]*", "=")
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interval = get_value($0, "INTERVAL=[^:;]*", "=")
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rrend = get_value($0, "UNTIL=[^:;]*", "=")
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rcount = get_value($0, "COUNT=[^:;]*", "=")
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intfreq = tolower(freq)
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if (interval != "")
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intfreq = " +" interval intfreq
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}
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/^METHOD/ {
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method = gensub("\r", "", "g", $2);
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method = $2
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}
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/^PRODID/ {
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prodid = gensub("\r", "", "g", $2);
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/^UID/ {
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id = $2
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}
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/^STATUS/ {
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status = $2
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}
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/^DESCRIPTION/ {
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entry = entry $2
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indescription = 1;
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}
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/^SUMMARY/ {
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summary = $2
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insummary = 1;
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}
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/^ORGANIZER/ {
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organizer = gensub("\r", "", "g", $0);
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organizer = $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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location = unescape($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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attendee = $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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if (method != "") {
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printf "\n This is a meeting %s\n\n", method
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}
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fmt = " %-14s%s\n"
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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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printf fmt, "SUMMARY", unescape(summary, 0)
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if(location != "")
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printf fmt, "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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printf fmt, "ORGANIZER", organizer
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for (idx in people_attending) {
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printf fmt, "ATTENDEE [" idx "]", people_attending[idx]
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partstat = people_partstat[idx]
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if (partstat != "") {
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print " STATUS " partstat
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printf fmt, "", "STATUS\t" partstat
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}
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rsvp = people_rsvp[cn]
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rsvp = people_rsvp[idx]
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if (rsvp != "") {
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print " RSVP " rsvp
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printf fmt, "", "RSVP\t" 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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printf fmt, "START", start_date
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printf fmt, "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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printf "\n"fmt, "RECURRENCE", intfreq
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if (rcount != "")
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print " COUNTS " rcount
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printf fmt, "COUNTS", rcount
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if (rrend != "")
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print " END DATE " rrend
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printf fmt, "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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if(entry != "")
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print "\n" unescape(entry, 1);
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UIDS[id] = 1;
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}
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}
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@ -228,101 +190,70 @@ BEGIN {
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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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ret = input
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gsub(/\\,/, ",", ret)
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gsub(/\\;/, ";", ret)
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if (preserve_newlines)
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ret = gensub("\\\\n", "\n", "g", ret)
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gsub(/\\n/, "\n", ret)
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else
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ret = gensub("\\\\n", " ", "g", ret)
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gsub(/\\n/, " ", ret)
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return ret
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}
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function datetimestring(input, tz)
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function datetimestring(input, tzInput)
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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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timestr = input
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pos = index(timestr, "T")
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if (pos < 0) {
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return timestr
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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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date = substr(timestr, 1, pos)
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time = substr(timestr, pos+1, length(timestr))
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year = substr(date, 1, 4)
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month = substr(date, 5, 2)
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day = substr(date, 7, 2)
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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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hour = substr(time, 1, 2)
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min = substr(time, 3, 2)
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sec = substr(time, 5, 2)
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stamp = mktime(spec);
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return strftime("%Y-%m-%d %a", stamp);
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return sprintf("%4d/%02d/%02d %02d:%02d:%02d %s", year, month, day, hour, min, sec, tzInput)
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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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idx = idx + 1
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people_attending[idx] = CN;
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people_partstat[idx] = get_value(attendee, "PARTSTAT=[^;:]+", "=")
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people_rsvp[idx] = get_value(attendee, "RSVP=[^;:]+", "=")
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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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name = get_value(line, "CN=[^;:]+", "=")
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email = get_value(line, "(mailto|MAILTO):[^;]+", ":")
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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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return sprintf("<%s>", email)
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} else {
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return sprintf("%s <%s>", name, email)
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}
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}
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function get_value(line, regexp, sep) {
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value = ""
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match(line, regexp)
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{
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z = split(substr(line,RSTART,RLENGTH),data,sep)
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if (z > 1) {
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value = data[2]
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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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return value
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}
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