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#!/usr/bin/env bash
# Copyright (c) 2016 Egor Tensin <Egor.Tensin@gmail.com>
# This file is part of the "Cygwin configuration files" project.
# For details, see https://github.com/egor-tensin/cygwin-home.
# Distributed under the MIT License.
sums_path='sha1sums.txt'
sums_list_paths() (
set -o errexit -o nounset -o pipefail
local fmt='%s\n'
while [ "$#" -gt 0 ]; do
local key="$1"
shift
case "$key" in
-h|--help)
echo "usage: ${FUNCNAME[0]} [-h|--help] [-0|-z]"
return 0
;;
-0|-z)
fmt='%s\0'
;;
*)
echo "${FUNCNAME[0]}: unrecognized parameter: $key" >&2
return 1
;;
esac
done
[ -e "$sums_path" ] || return 0
local -a paths=()
local path
while IFS= read -r path; do
paths+=("$path")
done < <( sed --binary -- 's/^\\\?[[:alnum:]]\+ [ *]//' "$sums_path" )
[ "${#paths[@]}" -eq 0 ] && return 0
printf -- "$fmt" ${paths[@]+"${paths[@]}"}
)
sums_update() (
set -o errexit -o nounset -o pipefail
local -A existing
local -a missing=()
local path
while IFS= read -d '' -r path; do
existing[$path]=1
done < <( sums_list_paths -z )
for path; do
[ -z "${existing[$path]+x}" ] && missing+=("$path")
done
[ "${#missing[@]}" -eq 0 ] && return 0
sha1sum -- ${missing[@]+"${missing[@]}"} >> "$sums_path"
)
sums_update_all() (
set -o errexit -o nounset -o pipefail
local -a paths
local path
while IFS= read -d '' -r path; do
paths+=("$path")
done < <( find . -type f -\! -name "$( basename -- "$sums_path" )" -printf '%P\0' )
sums_update ${paths[@]+"${paths[@]}"}
)
sums_update_distr() (
set -o errexit -o nounset -o pipefail
local -a paths
local path
while IFS= read -d '' -r path; do
paths+=("$path")
done < <( find . -type f -\( -iname '*.exe' -o -iname '*.iso' -\) -printf '%P\0' )
sums_update ${paths[@]+"${paths[@]}"}
)
sums_verify() {
sha1sum --check --quiet -- "$sums_path"
}
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