f22fce7f04
In c7c894a0, a per-selection line-cache was introduced in order to
overcome some of the limitations of clipmenu at the time (for example,
missing duplicate detection). However, now we have all the features we
need to have a single line cache again, and having multiple line caches
has caused more trouble than it is worth.
For example, maintaining CM_MAX_CLIPS globally is extremely cumbersome,
so we don't do it, and CM_MAX_CLIPS is actually acted on per-selection.
We also have had bugs where we perform actions on cache files without
properly consulting other line caches, and while those can be fixed, the
simplest thing to do now is just to go back to having a single line
cache.
92 lines
2.4 KiB
Bash
Executable file
92 lines
2.4 KiB
Bash
Executable file
#!/usr/bin/env bash
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: "${CM_DIR="${XDG_RUNTIME_DIR-"${TMPDIR-/tmp}"}"}"
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CM_REAL_DELETE=0
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if [[ $1 == -d ]]; then
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CM_REAL_DELETE=1
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shift
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fi
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major_version=6
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shopt -s nullglob
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cache_dir=$CM_DIR/clipmenu.$major_version.$USER
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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.
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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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# https://github.com/koalaman/shellcheck/issues/1141
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# shellcheck disable=SC2124
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raw_pattern=$1
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esc_pattern=${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 ! [[ $raw_pattern ]]; then
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printf '%s\n' 'No pattern provided, see --help' >&2
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exit 2
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fi
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exec {lock_fd}> "$lock_file"
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if (( CM_REAL_DELETE )) && [[ "$raw_pattern" == ".*" ]]; then
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flock -x -w "$lock_timeout" "$lock_fd" || exit
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rm -rf -- "$cache_dir"
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exit 0
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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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if (( CM_REAL_DELETE )); then
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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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else
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if (( ${#matches[@]} )); then
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printf '%s\n' "${matches[@]}"
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fi
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fi
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fi
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