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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_name="$( basename -- "$sums_path" )"
sums_unescape_path() {
set -o errexit -o nounset -o pipefail
if [ "$#" -ne 1 ]; then
echo "usage: ${FUNCNAME[0]} PATH" >&2
return 1
fi
local path="$1"
path="${path//'\\'/$'\\'}"
path="${path//'\n'/$'\n'}"
echo "$path"
}
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: ${FUNCNAME[0]} [-h|--help] [-0|--null|-z|--zero]"
return 0
;;
-0|-null|-z|--zero)
fmt='%s\0'
;;
*)
echo "${FUNCNAME[0]}: unrecognized parameter: $key" >&2
return 1
;;
esac
done
[ -e "$sums_path" ] || return 0
local -a paths=()
local sum path
while IFS= read -d ' ' -r sum; do
local escaped=
if [ "${sum#'\'}" != "$sum" ]; then
escaped=1
sum="${sum:1}"
fi
IFS= read -r path
path="${path#'*'}"
[ -n "$escaped" ] && path="$( sums_unescape_path "$path" )"
paths+=("$path")
done < "$sums_path"
[ "${#paths[@]}" -gt 0 ] && printf -- "$fmt" ${paths[@]+"${paths[@]}"}
)
sums_add() (
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[@]}"} >> "$sums_path"
)
sums_add_all() (
set -o errexit -o nounset -o pipefail
local -a paths
local path
while IFS= read -d '' -r path; do
paths+=("$path")
done < <( find . -type f -\! -iname "$sums_name" -printf '%P\0' )
sums_add ${paths[@]+"${paths[@]}"}
)
sums_add_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 -\( \
-iname '*.exe' \
-o -iname '*.iso' \
-o -iname '*.tar.gz' \
-o -iname '*.tar.bz2' \
-o -iname '*.zip' \
-\) -printf '%P\0' )
sums_add ${paths[@]+"${paths[@]}"}
)
sums_verify() {
sha1sum --check --strict --quiet -- "$sums_path"
}
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