chksum (2370B)
1 #!/usr/bin/env sh 2 3 # Description: Create and verify checksums 4 # 5 # Note: On macOS, install the relevant checksum packages from Homebrew with: 6 # brew install coreutils 7 # 8 # Details: 9 # - selection: it will generate one file with the checksums and filenames 10 # (and with paths if they are in another directory) 11 # output checksum filename format: checksum_timestamp.checksum_type 12 # - file: if the file is a checksum, the plugin does the verification 13 # if the file is not a checksum, checksum will be generated for it 14 # the output checksum filename will be filename.checksum_type 15 # - directory: recursively calculates checksum for all the files in the dir 16 # the output checksum filename will be directory.checksum_type 17 # 18 # Shell: POSIX compliant 19 # Authors: ath3, Arun Prakash Jana 20 21 selection=${NNN_SEL:-${XDG_CONFIG_HOME:-$HOME/.config}/nnn/.selection} 22 resp=f 23 chsum=md5 24 25 checksum_type() 26 { 27 echo "possible checksums: md5, sha1, sha224, sha256, sha384, sha512" 28 printf "create md5 (m), sha256 (s), sha512 (S) (or type one of the above checksums) [default=m]: " 29 read -r chsum_resp 30 for chks in md5 sha1 sha224 sha256 sha384 sha512 31 do 32 if [ "$chsum_resp" = "$chks" ]; then 33 chsum=$chsum_resp 34 return 35 fi 36 done 37 if [ "$chsum_resp" = "s" ]; then 38 chsum=sha256 39 elif [ "$chsum_resp" = "S" ]; then 40 chsum=sha512 41 fi 42 } 43 44 if [ -s "$selection" ]; then 45 printf "work with selection (s) or current file (f) [default=f]: " 46 read -r resp 47 fi 48 49 if [ "$resp" = "s" ]; then 50 checksum_type 51 sed 's|'"$PWD/"'||g' < "$selection" | xargs -0 -I{} ${chsum}sum {} > "checksum_$(date '+%Y%m%d%H%M').$chsum" 52 53 # Clear selection 54 if [ -p "$NNN_PIPE" ]; then 55 printf "-" > "$NNN_PIPE" 56 fi 57 elif [ -n "$1" ]; then 58 if [ -f "$1" ]; then 59 for chks in md5 sha1 sha224 sha256 sha384 sha512 60 do 61 if echo "$1" | grep -q \.${chks}$; then 62 ${chks}sum -c < "$1" 63 read -r _ 64 exit 65 fi 66 done 67 checksum_type 68 file=$(basename "$1").$chsum 69 ${chsum}sum "$1" > "$file" 70 elif [ -d "$1" ]; then 71 checksum_type 72 file=$(basename "$1").$chsum 73 find "$1" -type f -exec ${chsum}sum "{}" + > "$file" 74 fi 75 fi