74c479fa2f
Before doing an irreversible action via the option -d, allow the pattern ".*" to print which cache directory will be deleted.
96 lines
2.5 KiB
Bash
Executable file
96 lines
2.5 KiB
Bash
Executable file
#!/usr/bin/env bash
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CM_REAL_DELETE=0
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if [[ $1 == -d ]]; then
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CM_REAL_DELETE=1
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shift
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fi
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shopt -s nullglob
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cache_dir=$(clipctl cache-dir)
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cache_file=$cache_dir/line_cache
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lock_file=$cache_dir/lock
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lock_timeout=2
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if [[ $1 == --help ]] || [[ $1 == -h ]]; then
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cat << 'EOF'
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clipdel deletes clipmenu entries matching a regex. By default, just lists what
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it would delete, pass -d to do it for real. If no pattern is passed as an argument,
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it will try to read one from standard input.
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".*" is special, it will just nuke the entire data directory, including the
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line caches and all other state.
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Arguments:
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-d Delete for real.
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Environment variables:
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- $CM_DIR: specify the base directory to store the cache dir in (default: $XDG_RUNTIME_DIR, $TMPDIR, or /tmp)
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EOF
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exit 0
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fi
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if ! [[ -f $cache_file ]]; then
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printf '%s\n' "No line cache file found, no clips exist" >&2
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exit 0 # Well, this is a kind of success...
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fi
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if [[ -n $1 ]]; then
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raw_pattern=$1
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elif ! [[ -t 0 ]]; then
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IFS= read -r raw_pattern
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fi
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esc_pattern=${raw_pattern//\#/'\#'}
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# We use 2 separate sed commands so "esc_pattern" matches only the 'clip' text
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# without the timestamp (e.g. $> clipdel '^delete_exact_match$')
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sed_common_command="s#^[0-9]\+ ##;\\#${esc_pattern}#"
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if ! [[ $raw_pattern ]]; then
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printf '%s\n' 'No pattern provided, see --help' >&2
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exit 2
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elif [[ "$raw_pattern" == ".*" ]]; then
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delete_cache_dir=1
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else
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mapfile -t matches < <(
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sed -n "${sed_common_command}p" "$cache_file" |
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sort -u
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)
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fi
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exec {lock_fd}> "$lock_file"
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if (( CM_REAL_DELETE )); then
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if (( delete_cache_dir )); then
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flock -x -w "$lock_timeout" "$lock_fd" || exit
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rm -rf -- "$cache_dir"
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mkdir -p -- "$cache_dir"
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exit 0
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else
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flock -x -w "$lock_timeout" "$lock_fd" || exit
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for match in "${matches[@]}"; do
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ck=$(cksum <<< "$match")
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rm -f -- "$cache_dir/$ck"
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done
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temp=$(mktemp)
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# sed 'h' and 'g' here means save and restore the line, so
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# timestamps are not removed from non-deleted lines. 'd' deletes the
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# line and restarts, skipping 'g'/restore.
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# https://www.gnu.org/software/sed/manual/html_node/Other-Commands.html#Other-Commands
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sed "h;${sed_common_command}d;g" "$cache_file" > "$temp"
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mv -- "$temp" "$cache_file"
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flock -u "$lock_fd"
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fi
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elif (( delete_cache_dir )); then
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printf 'delete cache dir: %s\n' "$cache_dir"
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elif (( ${#matches[@]} )); then
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printf '%s\n' "${matches[@]}"
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fi
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