ken@turtlevax.UUCP (05/19/84)
<Hurrah for information hierarchy>
Now that turtlevax can post articles to the net again, I'm resubmitting
the newsweed package. Newsweed lets you look at the titles of unread
articles, and delete all those that aren't interesting. When you exit
the editor, newsweed updates your .newsrc to reflect your decision.
Get back at those people who don't use titles, or use the "Orphaned
Response" title.
--
Ken Turkowski @ CADLINC, Palo Alto, CA
UUCP: {amd70,decwrl,flairvax}!turtlevax!ken
-----------------------------------------------------------------
echo x - newsweed.1
cat >newsweed.1 <<'!Funky!Stuff!'
.TH NEWSWEED 1 local
.SH NAME
newsweed
.SH SYNOPSIS
.B newsweed
[readnews options]
.br
.B readnews
.SH DESCRIPTION
.I Newsweed
is a program to help in managing the vast number of articles
in the network news.
It is used to delete articles that are not interesting
before using
.I readnews
to read them.
.PP
A while after invoking
.I newsweed,
the user is presented with a list of titles of news articles
in his preferred editor,
as indicated by the environment variable EDITOR
(\fIvi\fR is the default).
Then the user deletes lines containing titles of undesired articles,
writes the file,
and lets
.I newsweed
modify the
.I .newsrc
file so that the undesired articles will not be presented.
The previous
.I .newsrc
is saved as
.I .newsrc.old.
.PP
Typically, one ends up deleting 80% of new news,
and saving an immense amount of time.
.SH FILES
~/.newsrc
.SH SEE ALSO
readnews(1), checknews(1)
.SH AUTHOR
Ken Turkowski
.SH BUGS
The title file is presented in alphabetical order
and should remain in alphabetical order;
otherwise not all of the uninteresting articles will be deleted.
.PP
It may take a long time to generate the titles file if
.I newsweed
is used to catch up on a backlog of news,
as after returning from vacation;
the csh ^Z stop signal is useful to put newsweed into the background
during phases other than the EDIT phase.
!Funky!Stuff!
echo x - newsweed
cat >newsweed <<'!Funky!Stuff!'
TEMP=/tmp/weed$$
NEWSRC=$HOME/.newsrc
AWKFILE=/usr/local/lib/newsweed.awk
trap 'rm ${TEMP}?; exit' 0 2
echo Making list of article titles
readnews -l $* | sort -o ${TEMP}a
if test -s ${TEMP}a
then
cp ${TEMP}a ${TEMP}b
echo Please remove article titles which you do not wish to read
sleep 1
reset # So that vi's CRLF doesn't get trashed
${EDITOR-vi} ${TEMP}b
if cmp -s ${TEMP}a ${TEMP}b
then
echo No articles deleted.
else
comm -23 ${TEMP}a ${TEMP}b | sed 's/ .*//' > ${TEMP}c
echo Removing unwanted articles
cp $NEWSRC $NEWSRC.old
awk -f $AWKFILE $NEWSRC.old ${TEMP}c > ${TEMP}d
cp ${TEMP}d $NEWSRC
fi
else
echo No news.
fi
!Funky!Stuff!
echo x - newsweed.awk
cat >newsweed.awk <<'!Funky!Stuff!'
BEGIN {
groupcount = 1
}
/^options/ {
options = $0
}
/^[^/]*:/ { # .newsrc input -- subscribed group
j = index($0, ":")
group = substr($0, 1, j-1)
i = groupindex[group] = groupcount++
newsgroup[i] = group
grouptype[i] = ":"
newsread[i] = substr($0, j+2) # list of articles read
}
/^[^/]*!/ { # .newsrc input -- unsubscribed group
j = index($0, "!")
group = substr($0, 1, j-1)
i = groupindex[group] = groupcount++
newsgroup[i] = group
grouptype[i] = "!"
newsread[i] = substr($0, j+2) # list of articles read
}
/^[^ /]+\/[0-9]+/ { # readnews -l output
j = index($0, "/")
group = substr($0, 1, j-1)
i = groupindex[group]
if (!i) { # not previously encountered
i = groupindex[group] = groupcount++
newsgroup[i] = group
grouptype[i] = ":"
}
k = index($0, " ")
if (k == 0)
article = substr($0, j+1)
else
article = substr($0, j+1, k-j-1)
if (newsread[i])
newsread[i] = newsread[i] "," article
else
newsread[i] = article
}
END {
if (options != 0)
print options
for (i = 1; i < groupcount; i++) {
n = split(newsread[i], artlist, ",")
for (j = 1; j <= n; j++) {
if (split(artlist[j], range, "-") == 1) {
rangelist[j] = artlist[j]
}
else {
artlist[j] = range[1]
rangelist[j] = range[2]
}
}
# sort articles
sorted = 0
start = 1
while (sorted == 0) {
sorted = 1
for (j = start; j < n; j++) {
if (j == start && !artlist[start]) {
start++
continue
}
if (artlist[j+1] < artlist[j]) { # swap
temp = artlist[j+1]
artlist[j+1] = artlist[j]
artlist[j] = temp
temp = rangelist[j+1]
rangelist[j+1] = rangelist[j]
rangelist[j] = temp
sorted = 0
}
if (artlist[j] && rangelist[j]+1 == artlist[j+1]) { # merge
artlist[j+1] = artlist[j]
artlist[j] = ""
rangelist[j] = ""
}
}
}
printf "%s%s", newsgroup[i], grouptype[i]
first = 1
for (j = start; j <= n; j++) {
if (artlist[j]) {
if (first == 0) printf ","
else printf " "
first = 0
if (artlist[j] != rangelist[j])
printf "%d-%d", artlist[j], rangelist[j]
else
printf "%d", artlist[j]
}
}
printf "\n"
}
}
!Funky!Stuff!