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#!/bin/sh
# contains functions related to the intentions-queue
# shellcheck disable=SC2039
if [ -z "${base_dir}" ]; then
# just to make shellcheck happy
. '../lib/load-configuration'
fi
# intent_something [-n]
# create an intention, provided on stdin - or just show the intention (-n)
# note, that this function is not thread-safe - use the lock
# $package_database_lock_file externally
intent_something() {
local next_number
if [ "x$1" = 'x-n' ]; then
cat
return
fi
next_number=$((
$(
find "${intentions_directory}" \
-maxdepth 1 \
-type f \
-name 'intention.*' \
-printf '%f\n' \
| sed '
s/^intention\.//
t
d
' \
| sort -nr \
| grep -xm1 '[0-9]\+' \
|| echo 0
)+1
))
{
# shellcheck disable=SC2016
printf '%s\n' \
'#!/bin/sh' \
'[ -n "${base_dir}" ] || . '"${base_dir}"'/lib/load-configuration'
cat
printf 'rm "%s"\n' "${intentions_directory}/intention.${next_number}"
} > "${intentions_directory}/intention.${next_number}"
chmod +x "${intentions_directory}/intention.${next_number}"
}
# execute_intention
# executes the next intention
execute_intention() {
local next_number
next_number=$(
find "${intentions_directory}" \
-maxdepth 1 \
-type f \
-name 'intention.*' \
-printf '%f\n' \
| sed '
s/^intention\.//
t
d
' \
| sort -n \
| grep -xm1 '[0-9]\+'
) || return 0
"${intentions_directory}/intention.${next_number}"
}
# intentions_left [-n]
# check if there are undone intentions left
# return 0 if there is something left to do
# return 1 if nothing is queued
# with -n: return immediately
# without -n: wait until nothing more to do
intentions_left() {
if [ ! "x$1" = 'x-n' ]; then
while intentions_left -n; do
sleep 1
done
fi
find "${intentions_directory}" \
-maxdepth 1 \
-type f \
-name 'intention.*' \
-printf '%f\n' \
| sed '
s/^intention\.//
t
d
' \
| sort -n \
| grep -qxm1 '[0-9]\+'
}
# execute_all_intentions
# executes all intentions
execute_all_intentions() {
while intentions_left -n; do
execute_intention
done
}
|
