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#!/bin/sh
#
# This hook checks that all local sources specified in the staged APKBUILDs
# are staged too or already committed and that checksums are correct.
#
set -eu
if ! command -v sha512sum >/dev/null; then
# macOS / BSDs (?) don't have sha512sum, but shasum.
alias sha512sum='shasum -a 512'
fi
error() {
printf '\033[0;31mpre-commit:\033[0m %s\n' "$1" >&2 # red
}
# Prints paths of created or modified APKBUILDs being committed.
changed_apkbuilds() {
git diff-index \
--name-only \
--cached \
--diff-filter=ACMR HEAD \
-- '**/APKBUILD'
}
# Prints file names and checksums (in format <SHA-512>:<filename>) of local
# sources specified in the APKBUILD ($1).
abuild_local_sources() {
apkbuild="$1"
set +eu
. "$apkbuild" || {
error "$apkbuild is invalid"
return 1
}
set -eu
status=0
for src in $source; do
# Skip remote sources.
case "$src" in */*) continue;; esac
echo "$sha512sums" | awk -v src="$src" '
{ if ($2 == src) { ok=1; print($2 ":" $1) } }
END { if (ok != 1) exit 1 }' || {
status=1
error "${apkbuild%/*}: file \"$src\" is missing in \$sha512sums (hint: run abuild checksum)"
}
done
return $status
}
# Checks that all local sources specified in the APKBUILD file ($1) are
# available in git tree and checksums are correct.
check_local_sources() {
local apkbuild="$1"
local startdir="${apkbuild%/*}"
local status=0
local checksum_act checksum_exp content filename line sources
sources=$(abuild_local_sources "$apkbuild")
for line in $sources; do
filename=${line%%:*}
checksum_exp=${line#*:}
if ! git cat-file -e ":$startdir/$filename" 2>/dev/null; then
error "$startdir: missing file \"$filename\""
status=1
continue
fi
checksum_act=$(git show ":$startdir/$filename" | sha512sum)
if [ "$checksum_act" != "$checksum_exp -" ]; then
error "$startdir: bad checksum for file \"$filename\" (hint: run abuild checksum)"
status=1
fi
done
return $status
}
for apkbuild in $(changed_apkbuilds); do
check_local_sources "$apkbuild"
done
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