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#!/bin/bash
#
# copy list of files using tar
tarcopy () {
if [ $# -gt 0 -a "x$1" == "x-i" ]; then
shift
local IGNORE_ERROR="--ignore-failed-read"
else
local IGNORE_ERROR=
fi
if [ "x$IGNORE_TAR_ERROR" != "x" ]; then
unset IGNORE_TAR_ERROR
IGNORE_ERROR="--ignore-failed-read"
fi
[ $# -ne 2 ] && perror "Sanity check failed: tarcopy needs exactly two params, but $# were given."
local FROM=$(trim "$1")
local TO=$(trim "$2")
if [ -z "$FROM" ]; then
pwarning "tarcopy called with empty input list (dest was '$TO')"
return
fi
local SHORT=$FROM
[ ${#SHORT} -gt 30 ] && SHORT=$(echo "$SHORT" | sed ':a;N;$!ba;s/\n/ /g' | cut -c-25)...$(echo "$SHORT" | cut -c$[${#SHORT} - 4]-)
[ -z "$TO" ] && perror "tarcopy called with empty destination."
[ ! -d "$TO" ] && { mkdir -p "$TO" || perror "could not create destination "$TO" for tar-copy."; }
# TODO count files copied? would remove the need to do it everywhere :)
tar $IGNORE_ERROR -cpP $FROM | tar -xp -C "$TO" \
2> /dev/null
local PS=(${PIPESTATUS[*]})
[ "x$IGNORE_ERROR" == "x" -a "x${PS[0]}" != "x0" ] && perror "packing-part of tar-copy from '$SHORT' to '$TO' failed. (${PS[0]})"
[ "x${PS[1]}" != "x0" ] && perror "unpacking-part of tar-copy from '$SHORT' to '$TO' failed. (${PS[1]})"
}
# usage: CANONICALIZED_PATH=$(canonalize <path>)
# usage with relative path requires you to be in the correct directory.
canonicalize() {
cd -P -- "$(dirname -- "$1")" && printf '%s\n' "$(pwd -P)/$(basename -- "$1")"
}
# "cd error": cd to given directory, perror on failure
cde () {
cd "$1" || perror "Could not cd to $1"
}
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