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post-receive-email: optional message line count limit

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We have become used to the features of svnmailer when used with Subversion,
and one of those useful features is that it can limit the maximum length
(in lines) of a commit email message. This is terribly useful since once the
goes beyond a reasonable number of lines, nobody is going to read the remainder,
and if they really want the entire contents of the commits, they can use
git itself to get them using the revision IDs present in the message already.

Change the post-receive-email script to respond to an 'emailmaxlines' config key
which, if specified, will limit the number of lines generated (including
headers); any lines beyond the limit are suppressed, and a final line is added
indicating the number that were suppressed.

Signed-off-by: Kevin P. Fleming <kpfleming@digium.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Kevin P. Fleming 2010-07-16 14:16:23 -05:00 committed by Junio C Hamano
parent 53b304224a
commit b03e7b7d76
1 changed files with 32 additions and 2 deletions
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34
contrib/hooks/post-receive-email
View file

@ -55,6 +55,11 @@
# "t=%s; printf 'http://.../?id=%%s' \$t; echo;echo; git show -C \$t; echo"
# Be careful if "..." contains things that will be expanded by shell "eval"
# or printf.
# hooks.emailmaxlines
# The maximum number of lines that should be included in the generated
# email body. If not specified, there is no limit.
# Lines beyond the limit are suppressed and counted, and a final
# line is added indicating the number of suppressed lines.
#
# Notes
# -----
@ -84,6 +89,7 @@ generate_email()
oldrev=$(git rev-parse $1)
newrev=$(git rev-parse $2)
refname="$3"
maxlines=$4
# --- Interpret
# 0000->1234 (create)
@ -192,7 +198,12 @@ generate_email()
fn_name=atag
;;
esac
generate_${change_type}_${fn_name}_email
if [ -z "$maxlines" ]; then
generate_${change_type}_${fn_name}_email
else
generate_${change_type}_${fn_name}_email | limit_lines $maxlines
fi
generate_email_footer
}
@ -642,6 +653,24 @@ show_new_revisions()
}
limit_lines()
{
lines=0
skipped=0
while IFS="" read -r line; do
lines=$((lines + 1))
if [ $lines -gt $1 ]; then
skipped=$((skipped + 1))
else
printf "%s\n" "$line"
fi
done
if [ $skipped -ne 0 ]; then
echo "... $skipped lines suppressed ..."
fi
}
send_mail()
{
if [ -n "$envelopesender" ]; then
@ -679,6 +708,7 @@ announcerecipients=$(git config hooks.announcelist)
envelopesender=$(git config hooks.envelopesender)
emailprefix=$(git config hooks.emailprefix || echo '[SCM] ')
custom_showrev=$(git config hooks.showrev)
maxlines=$(git config hooks.emailmaxlines)
# --- Main loop
# Allow dual mode: run from the command line just like the update hook, or
@ -691,6 +721,6 @@ if [ -n "$1" -a -n "$2" -a -n "$3" ]; then
else
while read oldrev newrev refname
do
generate_email $oldrev $newrev $refname | send_mail
generate_email $oldrev $newrev $refname $maxlines | send_mail
done
fi