perf: Add naive but performant path
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parent
f0fe96955a
commit
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35
clipmenu
35
clipmenu
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@ -3,17 +3,10 @@
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shopt -s nullglob
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shopt -s nullglob
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# We use this to make sure the cache files are sorted bytewise
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# We use this to make sure the cache files are sorted bytewise
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LC_COLLATE=C
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export LC_COLLATE=C
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declare -A selections
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cache_file=/tmp/clipmenu.$USER/line_cache
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cache_file=/tmp/clipmenu.$USER/line_cache
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# We use tac since we want newest to oldest, and we append in clipmenud
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while IFS='|' read -r full_file first_line; do
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selections[$first_line]=$full_file
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done < <(tac "$cache_file")
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# It's okay to hardcode `-l 8` here as a sensible default without checking
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# It's okay to hardcode `-l 8` here as a sensible default without checking
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# whether `-l` is also in "$@", because the way that dmenu works allows a later
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# whether `-l` is also in "$@", because the way that dmenu works allows a later
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# argument to override an earlier one. That is, if the user passes in `-l`, our
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# argument to override an earlier one. That is, if the user passes in `-l`, our
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@ -22,10 +15,32 @@ chosen_line=$(sed 's/^[^|]\+|//' "$cache_file" | tac | uniq | dmenu -l 8 "$@")
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[[ $chosen_line ]] || exit 1
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[[ $chosen_line ]] || exit 1
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# Naive, but performant path, only follow expensive path if it doesn't work
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out_line=$(grep -F "|$chosen_line" "$cache_file")
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out_length=$(wc -l <<< "$out_line")
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if (( out_length == 1 )); then
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# Cheap path succeded
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file=${out_line%%|*}
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elif (( out_length > 1 )); then
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# Cheap path failed
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while IFS='|' read -r full_file first_line; do
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if [[ $first_line == "$chosen_line" ]]; then
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file=$full_file
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break
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fi
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done <<< "$out_line"
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else
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# We didn't find this in cache
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printf 'FATAL: %s not in cache, run clipmenu-fsck\n' "$chosen_line" >&2
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exit 2
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fi
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for selection in clipboard primary; do
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for selection in clipboard primary; do
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if type -p xsel >/dev/null 2>&1; then
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if type -p xsel >/dev/null 2>&1; then
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xsel -i --"$selection" < "${selections[$chosen_line]}"
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xsel -i --"$selection" < "$file"
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else
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else
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xclip -sel "$selection" < "${selections[$chosen_line]}"
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xclip -sel "$selection" < "$file"
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fi
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fi
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done
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done
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