| David Brazdil | 2200a1b | 2018-05-05 12:07:38 +0100 | [diff] [blame] | 1 | #!/bin/bash |
| 2 | set -e |
| 3 | if [ -z "$1" ]; then |
| 4 | source_list=/dev/stdin |
| 5 | dest_list=/dev/stdout |
| 6 | else |
| 7 | source_list="$1" |
| 8 | dest_list="$1" |
| 9 | fi |
| 10 | # Load the file |
| 11 | readarray A < "$source_list" |
| 12 | # Sort |
| 13 | IFS=$'\n' |
| David Brazdil | ae88d4e | 2018-09-06 14:46:55 +0100 | [diff] [blame] | 14 | # Stash away comments |
| Mathew Inwood | 6be0fdd | 2018-09-14 15:19:10 +0100 | [diff] [blame] | 15 | C=( $(grep -E '^#' <<< "${A[*]}" || :) ) |
| 16 | A=( $(grep -v -E '^#' <<< "${A[*]}" || :) ) |
| David Brazdil | ae88d4e | 2018-09-06 14:46:55 +0100 | [diff] [blame] | 17 | # Sort entries |
| David Brazdil | 2200a1b | 2018-05-05 12:07:38 +0100 | [diff] [blame] | 18 | A=( $(LC_COLLATE=C sort -f <<< "${A[*]}") ) |
| 19 | A=( $(uniq <<< "${A[*]}") ) |
| David Brazdil | ae88d4e | 2018-09-06 14:46:55 +0100 | [diff] [blame] | 20 | # Concatenate comments and entries |
| 21 | A=( ${C[*]} ${A[*]} ) |
| David Brazdil | 2200a1b | 2018-05-05 12:07:38 +0100 | [diff] [blame] | 22 | unset IFS |
| 23 | # Dump array back into the file |
| Paul Duffin | c78bea4 | 2018-10-16 14:28:26 +0100 | [diff] [blame] | 24 | if [ ${#A[@]} -ne 0 ]; then |
| Mathew Inwood | 50dea42 | 2018-10-05 15:47:29 +0100 | [diff] [blame] | 25 | printf '%s\n' "${A[@]}" > "$dest_list" |
| 26 | fi |