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linux/.config/bash/module/archive.sh

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Bash

export _archive_pattern="_[0-9]{12}-[[:alnum:]]{40}.t[xg]z"
# Archive directories.
# All directories by default.
# Usage: archive [DIRS]
function archive() {
local IFS=$'\n'
local targets=("${@}")
local count=0
local total=${#}
local date=$(_archive_date)
local failed=0
# Set dafult value to target all directories.
if [[ "${targets}" = "" ]]; then
targets=($(ls --classify | grep /\$))
total=${#targets[@]}
fi
# iterate each target.
for target in "${targets[@]}"; do
# increment counter.
((count++))
# status info.
local status="[${count}/${total}] ${target}"
echo -e "${status}"
local name=$(parse_camel "${target}")
# create archive.
tar -c "${target}" | pv -s $(/usr/bin/du -sb "${target}" | awk '{print $1}') | xz -9e > "${name}".txz
# append hash to target name.
mv "${name}".txz "${name}"_${date}-$(pv "${name}".txz | sha1sum | cut -d\ -f1).txz
# Show error.
if [[ ${?} != 0 ]]; then
((failed++))
echo -e "${color_bred}${status}: Failed.${color_default}"
fi
done
# Show error.
if [[ ${failed} != 0 ]]; then
echo -e "${color_bred}Failed: ${failed}.${color_default}"
false
fi
}
# Archive directories with fast compression.
# All directories by default.
# Usage: archive_fast [DIRS]
function archive_fast() {
local IFS=$'\n'
local targets=("${@}")
local count=0
local total=${#}
local date=$(_archive_date)
local failed=0
# Set dafult value to target all directories.
if [[ "${targets}" = "" ]]; then
targets=($(ls --classify | grep /$))
total=${#targets[@]}
fi
# iterate each target.
for target in "${targets[@]}"; do
# increment counter.
((count++))
# status info.
local status="[${count}/${total}] ${target}"
echo -e "${status}"
local name=$(parse_camel "${target}")
# create archive.
tar -c "${target}" | pv -s $(/usr/bin/du -sb "${target}" | awk '{print $1}') | gzip -1 > "${name}".tgz
# append hash to target name.
mv "${name}".tgz "${name}"_${date}-$(pv "${name}".tgz | sha1sum | cut -d\ -f1).tgz
# Show error.
if [[ $? != 0 ]]; then
((failed++))
echo -e "${color_bred}${status}: Failed.${color_default}"
fi
done
# Show error.
if [[ ${failed} != 0 ]]; then
echo -e "${color_bred}Failed: ${failed}.${color_default}"
false
fi
}
# Check archives integrity.
# Checks all archives by default.
# Usage: archive_check [FILES]
function archive_check() {
local IFS=$'\n'
local targets=("${@}")
local total=${#}
local count=0
local failed=0
# set dafult value to target all supported archives.
if [[ "${targets}" = "" ]]; then
targets=($(ls | grep -E ${_archive_pattern}))
total=${#targets[@]}
fi
# iterate each target.
for target in "${targets[@]}"; do
# increment counter.
((count++))
# status info.
local status="[${count}/${total}] ${target}"
echo -e "${status}"
# extract hash from name.
local data=($(_archive_parse ${target}))
local saved=${data[2]}
# calculate actual hash.
local actual=$(pv "${target}" | sha1sum | cut -d\ -f1)
# compare hashes, show error on mismatch.
if [[ "${actual}" != "${saved}" ]]; then
((failed++))
echo -e "${color_bred}${status}: Failed.${color_default}"
fi
done
if [[ ${failed} != 0 ]]; then
echo -e "${color_bred}Failed: ${failed}.${color_default}"
false
fi
}
# Delete old versions of archives.
# All archives by default.
# Usage: archive_prune [NAME]
function archive_prune() {
local IFS=$'\n'
local targets=("${@}")
local count=0
local total=${#}
local failed=0
# All archives by default.
if [[ "${targets}" = "" ]]; then
targets=($(ls | grep -E ${_archive_pattern}))
total=${#targets[@]}
fi
# Iterate each target.
for target in "${targets[@]}"; do
# Only work with existing files.
[[ -f "${target}" ]] || continue
# Iterate counter.
((count++))
local data=($(_archive_parse ${target}))
local name="${data[0]}"
local time="${data[1]}"
local copies=($(ls ${name}_*))
# Iterate each copy.
for copy in "${copies[@]}"; do
local copy_data=($(_archive_parse ${copy}))
local copy_time="${copy_data[1]}"
if [[ "${copy_time}" -lt "${time}" ]]; then
echo -e "${name}: prune ${copy_time}."
rm -- "${copy}"
if [[ ${?} != 0 ]]; then
echo -e "${color_bred}${target}: Failed.${color_default}"
((failed++))
fi
fi
done
done
if [[ ${failed} != 0 ]]; then
echo -e "${color_bred}Failed: ${failed}.${color_default}"
false
fi
}
# Extract previously created archive with checksum validation.
# Usage: unarchive [FILES]
function unarchive() {
local IFS=$'\n'
local targets=("${@}")
local count=0
local total=${#}
local failed=0
# set dafult value to target all supported archives.
if [[ "${targets}" = "" ]]; then
targets=($(ls | grep -E ${_archive_pattern}))
total=${#targets[@]}
fi
# iterate each target.
for target in "${targets[@]}"; do
# increment counter.
((count++))
# status info.
local status="[${count}/${total}] ${target}"
echo -e "${status}"
# extract hash from name.
local data=($(_archive_parse "${target}"))
local saved="${data[2]}"
# calculate actual hash.
local actual=$(pv "${target}" | sha1sum | cut -d\ -f1)
# extract if hash matched or show error if not.
if [[ "${saved}" = "${actual}" ]]; then
# figure out the compression tool.
local compressor
case "${target##*.}" in
"txz")
compressor="xz -d"
;;
"tgz")
compressor="gzip -d"
;;
esac
# extract.
unset IFS
pv "${target}" | ${compressor} | tar -xf -
if [[ ${?} != 0 ]]; then
echo -e "${color_bred}${status}: Failed.${color_default}"
((failed++))
fi
else
# report validation error & continue.
echo -e "${color_bred}${status}: Validation failed.${color_default}"
((failed++))
continue
fi
done
if [[ ${failed} != 0 ]]; then
echo -e "${color_bred}Failed: ${failed}.${color_default}"
false
fi
}
# Rename archives.
# If no name specified, it simplifies archive's name.
# If no archives specified, apply to all archives.
# Usage: archive_name [ARCHIVE] [NAME]
function archive_name() {
local IFS=$'\n'
local targets="${1}"
local name="${2}"
local total=1
local count=0
local failed=0
# set dafult value to target all supported archives.
if [[ "${targets}" = "" ]]; then
targets=($(ls | grep -E ${_archive_pattern}))
total=${#targets[@]}
fi
# iterate each target.
for target in "${targets[@]}"; do
# iterate counter.
((count++))
# simplify name by default.
if [[ "${name}" = "" || ${count} -gt 1 ]]; then
name="${target%_*}"
name="$(parse_camel ${name})"
fi
# remove old name.
local data="${target##*_}"
local new_name="${name}_${data}"
# prepare status.
local status="[${count}/${total}] ${target} -> ${new_name}"
# check for the same name.
if [[ "${target}" = "${new_name}" ]]; then
echo -e "${status}"
continue
fi
# check for existing target.
if [[ -f "${new_name}" ]]; then
echo -e "${color_bred}${status}: Already exists.${color_default}"
((failed++))
continue
fi
echo -e "${status}"
# rename.
mv -- "${target}" "${new_name}"
if [[ ${?} != 0 ]]; then
echo -e "${color_bred}${status}: Failed.${color_default}"
((failed++))
fi
done
if [[ ${failed} != 0 ]]; then
echo -e "${color_bred}Failed: ${failed}.${color_default}"
false
fi
}
# Convert old archives to a new format. *TODO: remove me after some time when there won't be any old archives.*
function archive_convert() {
local IFS=$'\n'
local old_format="_[[:alnum:]]{40}.tar.[xg]z"
local targets=($(ls | grep -E ${old_format}))
# add timestamp.
for target in "${targets[@]}"; do
local stamp=$(stat --format '%w' -- "${target}" | sed -e 's/\..*//' -e 's/:..$//' -e 's/-//g' -e 's/://' -e 's/\ //')
local name="${target%_*}"
local old_data="${target##*_}"
local new_name="${name}_${stamp}-${old_data}"
echo "${target} -> ${new_name}"
mv "${target}" "${new_name}"
done
# convert tar.xz and tar.gz to .tgz and .txz.
old_format="_[0-9]{12}-[[:alnum:]]{40}.tar.[xg]z"
targets=($(ls | grep -E ${old_format}))
for target in "${targets[@]}"; do
local compression="${target##*.}"
local new_compression
case "${compression}" in
"gz")
new_compression="tgz"
;;
"xz")
new_compression="txz"
;;
esac
local new_name="${target%.tar.*}".${new_compression}
echo "${target} -> ${new_name}"
mv -- "${target}" "${new_name}"
done
}
# Parse archive file name to get: name, date, hash and format.
# Usage: _archive_parse <FILENAME>
function _archive_parse() {
local input="${1}"
local name="${input%_*}"
local format="${input##*.}"
local data="${input##*_}"; data="${data%.*}"
local date="${data%%-*}"
local hash="${data##*-}"
echo "${name}"
echo "${date}"
echo "${hash}"
echo "${format}"
}
# Autocomplete for archive_name function.
# First arg is the archives list, second one is selected archive's current name.
function _archive_name() {
local IFS=$'\n'
COMPREPLY=()
local cur="${COMP_WORDS[COMP_CWORD]}"
local prev="${COMP_WORDS[COMP_CWORD-1]}"
local command="${COMP_WORDS[0]}"
if [[ "${prev}" = "${command}" ]]; then
COMPREPLY=( $(compgen -W "$(ls | grep -E ${_archive_pattern})" -- ${cur}) )
return 0
else
local name="${prev%_*}"
COMPREPLY=( $(compgen -W "${name}" -- ${cur}) )
return 0
fi
}
# Autocomplete with archives in current dir.
function _archive_grep() {
_autocomplete_grep ${_archive_pattern}
}
# Get date for a new archive.
function _archive_date() {
date +%Y%m%d%H%M
}
complete -o filenames -F _archive_grep archive_check unarchive
complete -o filenames -F _archive_name archive_name