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#!/usr/bin/env bash
#
# Scan a branch directory for source tarballs and rebuild the releases.json
# file for that branch. md5 and sha256 are added if present. The highest
# numberred version is referenced as the latest release.
#
# Usage: $0 [-b branch] [-o outfile] /path/to/download/branch
#
USAGE="Usage: ${0##*/} [-b branch] [-o outfile] DIR"
OUTPUT=
BRANCH=
DIR=
die() {
[ "$#" -eq 0 ] || echo "$*" >&2
exit 1
}
err() {
echo "$*" >&2
}
quit() {
[ "$#" -eq 0 -o -n "$QUIET" ] || echo "$*"
exit 0
}
emit_json() {
printf '{\n "branch": "%s",\n' ${BRANCH}
latest=""
for file in $(find "$DIR/src" -name 'haproxy-[0-9]*.gz' -printf "%P\n" |grep -v '[0-9]-patches*' | sort -rV ); do
rel="${file##*haproxy-}"
rel="${rel%%.tar.*}"
if [ -z "$latest" ]; then
latest="$rel";
printf ' "latest_release": "%s",\n' ${latest}
printf ' "releases": {\n'
else
printf ",\n"
fi
printf ' "%s": {\n' ${rel}
printf ' "file": "%s"' ${file}
if [ -s "$DIR/src/$file.md5" ]; then
printf ',\n "md5": "%s"' $(awk '{print $1}' "$DIR/src/$file.md5")
fi
if [ -s "$DIR/src/$file.sha256" ]; then
printf ',\n "sha256": "%s"' $(awk '{print $1}' "$DIR/src/$file.sha256")
fi
printf '\n }'
done
if [ -n "$latest" ]; then
printf "\n }" ## "releases"
fi
printf '\n}\n'
}
### main
while [ -n "$1" -a -z "${1##-*}" ]; do
case "$1" in
-b) BRANCH="$2" ; shift 2 ;;
-o) OUTPUT="$2" ; shift 2 ;;
-h|--help) quit "$USAGE" ;;
*) die "$USAGE" ;;
esac
done
if [ $# -ne 1 ]; then
die "$USAGE"
fi
DIR="$1" ; shift
if [ -z "$DIR" ]; then
die "Missing download directory name."
fi
if [ ! -d "$DIR/." ]; then
die "Download directory doesn't exist : $DIR"
fi
if [ ! -d "$DIR/src" ]; then
die "Download directory must contain 'src' : $DIR"
fi
if [ -z "$BRANCH" ]; then
BRANCH=${DIR##*/}
if [ -n "${BRANCH//[0-9.]}" ]; then
die "Couldn't determine branch number from dir name: $BRANCH"
fi
fi
# echo "debug: DIR=$DIR BRANCH=$BRANCH"
if [ -n "$OUTPUT" ]; then
emit_json > "$OUTPUT.tmp"
mv -f "$OUTPUT.tmp" "$OUTPUT"
rm -f "$OUTPUT.tmp"
else
emit_json
fi
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