nnn/plugins/chksum

67 lines
2.1 KiB
Plaintext
Raw Normal View History

#!/usr/bin/env sh
# Description: Create and verify checksums
#
# For selection: it will generate one file containing the checksums with file names
# [and with paths if they are in another directory]
# the output checksum filename will be checksum_timestamp.checksum_type
# For file: if the file is a checksum, the plugin does the verification
# if the file is not a checksum, checksum will be generated for it
# the output checksum filename will be filename.checksum_type
# For directory: recursively calculates checksum for all the files in the directory
# the output checksum filename will be directory.checksum_type
#
# Shell: POSIX compliant
2020-05-06 05:12:29 +00:00
# Authors: ath3, Arun Prakash Jana
2020-04-24 04:42:24 +00:00
selection=${NNN_SEL:-${XDG_CONFIG_HOME:-$HOME/.config}/nnn/.selection}
resp=f
chsum=md5
checksum_type()
{
echo "possible checksums: md5, sha1, sha224, sha256, sha384, sha512"
2019-11-21 20:44:25 +00:00
printf "create md5 (m), sha256 (s), sha512 (S) (or type one of the above checksums) [default=m]: "
read -r chsum_resp
for chks in md5 sha1 sha224 sha256 sha384 sha512
do
if [ "$chsum_resp" = "$chks" ]; then
chsum=$chsum_resp
return
fi
done
if [ "$chsum_resp" = "s" ]; then
chsum=sha256
elif [ "$chsum_resp" = "S" ]; then
chsum=sha512
fi
}
if [ -s "$selection" ]; then
2019-11-21 20:44:25 +00:00
printf "work with selection (s) or current file (f) [default=f]: "
read -r resp
fi
if [ "$resp" = "s" ]; then
checksum_type
2019-08-23 16:13:32 +00:00
sed 's|'"$PWD/"'||g' < "$selection" | xargs -0 -I{} ${chsum}sum {} > "checksum_$(date '+%Y%m%d%H%M').$chsum"
elif [ -n "$1" ]; then
if [ -f "$1" ]; then
for chks in md5 sha1 sha224 sha256 sha384 sha512
do
2019-11-21 20:44:25 +00:00
if echo "$1" | grep -q \.${chks}$; then
${chks}sum -c < "$1"
2019-11-21 20:44:25 +00:00
read -r _
return
fi
done
checksum_type
file=$(basename "$1").$chsum
${chsum}sum "$1" > "$file"
elif [ -d "$1" ]; then
checksum_type
file=$(basename "$1").$chsum
find "$1" -type f -exec ${chsum}sum "{}" + > "$file"
fi
fi