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#!/usr/bin/env bash
# Copyright (c) 2016 Egor Tensin <Egor.Tensin@gmail.com>
# This file is part of the "linux-home" project.
# For details, see https://github.com/egor-tensin/linux-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
shopt -s inherit_errexit
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
shopt -s inherit_errexit
local print_lines=
local print_sums=
local zero_terminated=
while [ "$#" -gt 0 ]; do
local key="$1"
shift
case "$key" in
-h|--help)
echo "usage: ${FUNCNAME[0]} [-h|--help] [-0|--null|-z|--zero] [-l|--lines] [-s|--sums]"
return 0
;;
-0|-null|-z|--zero)
zero_terminated=1
;;
-l|--lines)
print_lines=1
;;
-s|--sums)
print_sums=1
;;
*)
echo "${FUNCNAME[0]}: unrecognized parameter: $key" >&2
return 1
;;
esac
done
local fmt_line='%s\n'
[ -n "$zero_terminated" ] && fmt_line='%s\0'
local fmt_output="$fmt_line"
[ -n "$print_lines" ] && fmt_output="$fmt_line$fmt_output"
[ -n "$print_sums" ] && fmt_output="$fmt_output$fmt_line"
[ -e "$sums_path" ] || return 0
local -a output=()
local line
while IFS= read -r line; do
{
local path sum
IFS= read -d ' ' -r sum
local escaped=
if [ "${sum#'\'}" != "$sum" ]; then
escaped=1
sum="${sum:1}"
fi
IFS= read -r path
path="${path:1}"
[ -n "$escaped" ] && path="$( _sums_unescape_path "$path" )"
[ -n "$print_lines" ] && output+=("$line")
output+=("$path")
[ -n "$print_sums" ] && output+=("$sum")
} <<< "$line"
done < "$sums_path"
if [ "${#output[@]}" -gt 0 ]; then
printf -- "$fmt_output" ${output[@]+"${output[@]}"}
fi
)
sums_add() (
set -o errexit -o nounset -o pipefail
shopt -s inherit_errexit lastpipe
local -A existing
local -a missing=()
local path
sums_list_paths -z | while IFS= read -d '' -r path; do
existing[$path]=1
done
for path; do
[ -z "${existing[$path]+x}" ] && missing+=("$path")
done
[ "${#missing[@]}" -eq 0 ] && return 0
sha1sum -- ${missing[@]+"${missing[@]}"} >> "$sums_path"
)
sums_add_all() (
set -o errexit -o nounset -o pipefail
shopt -s inherit_errexit lastpipe
local -a paths
local path
find . -type f -\! -iname "$sums_name" -printf '%P\0' | while IFS= read -d '' -r path; do
paths+=("$path")
done
sums_add ${paths[@]+"${paths[@]}"}
)
sums_add_distr() (
set -o errexit -o nounset -o pipefail
shopt -s inherit_errexit lastpipe
local -a paths
local path
find . -type f -\( \
-iname '*.7z' \
-o -iname '*.exe' \
-o -iname '*.img' \
-o -iname '*.iso' \
-o -iname '*.tar' \
-o -iname '*.tar.bz2' \
-o -iname '*.tar.gz' \
-o -iname '*.zip' \
-\) -printf '%P\0' |
while IFS= read -d '' -r path; do
paths+=("$path")
done
sums_add ${paths[@]+"${paths[@]}"}
)
sums_verify() (
set -o errexit -o nounset -o pipefail
shopt -s inherit_errexit
sha1sum --check --strict --quiet -- "$sums_path"
)
sums_remove_missing() (
set -o errexit -o nounset -o pipefail
shopt -s inherit_errexit lastpipe
local dry_run=
while [ "$#" -gt 0 ]; do
local key="$1"
shift
case "$key" in
-h|--help)
echo "usage: ${FUNCNAME[0]} [-h|--help] [-n|--dry-run]"
return 0
;;
-n|--dry-run)
dry_run=1
;;
*)
echo "${FUNCNAME[0]}: unrecognized parameter: $key" >&2
return 1
;;
esac
done
local -a input=()
local -a paths=()
local line path
sums_list_paths -z --lines | while IFS= read -d '' -r line; do
IFS= read -d '' -r path
input+=("$line")
paths+=("$path")
done
local -a output=()
local i
for i in "${!paths[@]}"; do
if [ ! -e "${paths[$i]}" ]; then
echo "${FUNCNAME[0]}: doesn't exist: ${paths[$i]}"
else
output+=("${input[$i]}")
fi
done
[ -n "$dry_run" ] && return 0
for line in ${output[@]+"${output[@]}"}; do
echo "$line"
done > "$sums_path"
)
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