27 lines
850 B
Bash
27 lines
850 B
Bash
# This hook generates vcdiffs for repository data.
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hook() {
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type -P xdelta3 > /dev/null || return 0
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find $XBPS_REPOSITORY -name "${XBPS_TARGET_MACHINE}-repodata.genVcdiff" | xargs -r sha256sum | \
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while read chk oldfile; do
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newfile=${oldfile/.genVcdiff/}
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if ! cmp -s "${newfile}" "${oldfile}"; then
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newdiff="${newfile}.${chk}.vcdiff"
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xdelta3 -q -f -e -s "${oldfile}" "${newfile}" "${newdiff}"
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for diff in ${newfile}.*.vcdiff; do
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[ "${diff}" = "${newdiff}" ] && continue;
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cp -- "${diff}" "${diff}.tmp"
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xdelta3 -q -f merge -m "${diff}.tmp" "${newdiff}" "${diff}"
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rm -- "${diff}.tmp"
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done
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fi
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# generate an empty diff to the new file
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newchk=`sha256sum ${newfile} | awk '{ print $1 }'`
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xdelta3 -q -f -e -s "${newfile}" "${newfile}" "${newfile}.${newchk}.vcdiff"
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rm -- "${oldfile}"
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done
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}
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