meow.sh/meow.sh

137 lines
3.2 KiB
Bash

#!/usr/bin/env bash
SEP=$'\t'
curl=(curl -sS -m 32 --connect-timeout 8 --retry 3 --retry-delay 1)
URL_SEARCH="${URL_SEARCH:-https://www.nyaa.se/}"
URL_DOWNLOAD="${URL_DOWNLOAD:-https://www.nyaa.se/?page=download&tid=}"
# all timestamps are given in seconds since the epoch
declare -A searchquery
declare -A searchregex
die() {
echo -E "$@" >&2
exit 1
}
retrieve() {
${curl[@]} -G --data-urlencode "term=[$1]" -d page=rss "$URL_SEARCH"
}
nullcheck() { # {query}
[[ -n "$1" ]] || die "Null search query";
}
sanitize() {
sed -e 's/[^0-9a-zA-Z_]/_/g'
}
splittags() { # {tag}
awk -v tag="$1" -f "$SRCDIR/splittags.awk"
}
scrape() {
TZ=UTC0 awk -v sep="$SEP" -f "$SRCDIR/scrape.awk"
}
watch() { # {group name} [regex...]
declare -a regexes
local query="$1"
shift
for regex; do
regexes+=("^\[$query\].*$regex")
done
watchany "$query" "${regexes[@]}"
}
watchany() { # {search query} [regex...]
nullcheck "$1"
local gs="$(sanitize<<<"$1")" regex=
searchquery[$gs]="$1"
shift
for regex; do
searchregex[$gs]+="|($regex)"
done
}
search() {
nullcheck "$1"
retrieve "$1" | tr -d '\r\n'"$SEP" | splittags item | scrape
[ ${PIPESTATUS[0]} = 0 ] || die "Failed to search for $1"
}
searchfilter() { # database regex [timestamp]
while read -r; do
IFS=$SEP read -r time tid title <<< "$REPLY"
[ "$time" -gt "${3:-0}" ] \
&& grep -qP "$2" <<< "$title" \
&& echo -E "$REPLY"
done < "$1"
}
searchfilter_fast() { # {database} {regex}
declare -A matched
while read -r; do
matched["$REPLY"]=1
done < <(cut -f3- "$1" | grep -nP "$2" | grep -Eo '^[^:]+')
n=0
while read -r; do
((n++))
[ "${matched[$n]:-0}" -eq 1 ] && echo "$REPLY"
done < "$1"
}
runfilter() { # {action} [database]
declare -A already
local action="${1:-echo}"
local mark="$action.txt"
local db="${2:-db.txt}"
local ret=0
touch "$mark"
while IFS=$SEP read -r tid time; do
already["$tid"]="$time"
done < "$mark"
now="$(date +%s)"
while IFS=$SEP read -r time tid title; do
[ -n "${already[$tid]}" ] || {
$action $time $tid "$title" && already[$tid]="$now"
} || {
echo "[meow.sh] failed to run $action" >&2
echo "[meow.sh] torrent title: $title" >&2
echo "[meow.sh] torrent id: $tid" >&2
ret=1
break
}
done < <(for regex in "${searchregex[@]}"; do
searchfilter_fast "$db" "${regex:1}"
done)
rm "$mark"
for tid in "${!already[@]}"; do
echo "$tid$SEP${already[$tid]}" >> "$mark"
done
return "$ret"
}
runsearch() { # [database]
local db="${1:-db.txt}"
local tmp=`mktemp`
touch "$db"
for q in "${!searchquery[@]}"; do
search "${searchquery[$q]}" \
| while IFS=$SEP read -r title torrent time; do
local tid="${torrent##*=}"
echo -E "$time$SEP$tid$SEP$title"
done
done | sort -n -- "$db" - | uniq > $tmp
fs_old="$(du -b "$db" | cut -f1)"
fs_new="$(du -b $tmp | cut -f1)"
[ "$fs_new" -ge "$fs_old" ] || die "new database is smaller than current!"
mv $tmp "$db"
}