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# Tarball creation plus the naming helpers that decide what the archive file is
# called. The naming helpers (tarball_name_plan / generated_tarball_name) were
# moved here from album-metadata.source.sh (task 6r0): naming the archive is part
# of this module's tarball concern, alongside tarball() which writes it. The
# planned-name variant is consumed by the dry-run preview; the generated variant
# (with a real timestamp slug) is consumed by the album coordinator when it
# actually creates the archive. Behaviour and signatures are unchanged.
# Print the tarball name as it will appear in the dry-run plan: the incoming
# directory's basename, a literal "<timestamp>" placeholder, and the suffix.
tarball_name_plan() {
local base
base=$(basename "$INCOMING_DIR")
printf '%s-<timestamp>%s\n' "$base" "$TARBALL_SUFFIX"
}
# Print the real tarball name used at generation time: the incoming directory's
# basename, the current timestamp slug, and the configured suffix.
generated_tarball_name() {
local base
local timestamp
base=$(basename "$INCOMING_DIR")
timestamp=$(current_timestamp_slug)
printf '%s-%s%s\n' "$base" "$timestamp" "$TARBALL_SUFFIX"
}
tarball() {
local -r tarball_name="$1"; shift
local -r tarball_suffix="$TARBALL_SUFFIX"
local base
local old_tarball
local -a tar_opts=()
# Cleanup tarballs from previous runs for the configured suffix.
while IFS= read -r -d '' old_tarball; do
if [[ "$old_tarball" == *"$tarball_suffix" ]]; then
rm -f "$old_tarball"
fi
done < <(find "$DIST_DIR" -maxdepth 1 -type f -print0)
base=$(basename "$INCOMING_DIR")
resolve_tar_opts tar_opts
log_info "Creating tarball $(_display_path "$DIST_DIR/$tarball_name")" \
"from $INCOMING_DIR"
(
cd "$(dirname "$INCOMING_DIR")"
run_with_timeout tar "$TAR_TIMEOUT" \
tar "${tar_opts[@]}" -f "$DIST_DIR/$tarball_name" "$base"
)
}
resolve_tar_opts() {
local -n options_ref="$1"; shift
# Parse TAR_OPTS (array or scalar) via the shared config-array helper,
# then fall back to a plain "-c" whenever no options were configured,
# whether TAR_OPTS was unset or set to an empty value.
# The helper returns non-zero when TAR_OPTS was never declared; we ignore
# that here (|| true) because the empty-array fallback below covers the
# unset case, and the bare non-zero return would otherwise trip set -e.
resolve_config_array TAR_OPTS options_ref || true
if (( ${#options_ref[@]} == 0 )); then
# shellcheck disable=SC2034
options_ref=(-c)
fi
}
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