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emoji-cli.zsh
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emoji-cli.zsh
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#
# _ _ _ _
# (_|_) | (_)
# ___ _ __ ___ ___ _ _ ______ ___| |_
# / _ \ '_ ` _ \ / _ \| | |______/ __| | |
# | __/ | | | | | (_) | | | | (__| | |
# \___|_| |_| |_|\___/| |_| \___|_|_|
# _/ |
# |__/
#
EMOJI_CLI_DICT="${0:A:h}/dict/emoji.json"
: "${EMOJI_CLI_FILTER:="fzf-tmux -d 15%:fzf:peco:percol:fzy"}"
: "${EMOJI_CLI_KEYBIND:="^s"}"
# helper functions
is_zsh() { [ -n "$ZSH_VERSION" ]; }
available() {
local x candidates
# candidates should be list like "a:b:c" concatenated by a colon
candidates="$1:"
while [ -n "$candidates" ]; do
# the first remaining entry
x=${candidates%%:*}
# reset candidates
candidates=${candidates#*:}
# check if x is available
if (( $+commands[${x%% *}] )); then
echo "$x"
return 0
else
continue
fi
done
return 1
}
emoji::fuzzy() {
awk -v search_string="${1:?too few arguments}" '
{
# calculates the degree of similarity
if ( (1 - leven_dist($0, search_string) / (length($0) + length(search_string))) * 100 >= 70 ) {
# When the degree of similarity of search_string is greater than or equal to 70%,
# to display the candidate path
print $0
}
}
# leven_dist returns the Levenshtein distance two text string
function leven_dist(a, b) {
lena = length(a);
lenb = length(b);
if (lena == 0) {
return lenb;
}
if (lenb == 0) {
return lena;
}
for (row = 1; row <= lena; row++) {
m[row,0] = row
}
for (col = 1; col <= lenb; col++) {
m[0,col] = col
}
for (row = 1; row <= lena; row++) {
ai = substr(a, row, 1)
for (col = 1; col <= lenb; col++) {
bi = substr(b, col, 1)
if (ai == bi) {
cost = 0
} else {
cost = 1
}
m[row,col] = min(m[row-1,col]+1, m[row,col-1]+1, m[row-1,col-1]+cost)
}
}
return m[lena,lenb]
}
# min returns the smaller of x, y or z
function min(a, b, c) {
result = a
if (b < result) {
result = b
}
if (c < result) {
result = c
}
return result
}' 2>/dev/null
}
emoji::emoji_get() {
# reset filter
_EMOJI_CLI_FILTER="$(available "$EMOJI_CLI_FILTER")"
local awk_field=2
[ -n "${EMOJI_CLI_USE_EMOJI}" ] && awk_field=1
cat <"$EMOJI_CLI_DICT" \
| jq -r '.[]|"\(.emoji) \(":" + .aliases[0] + ":")"' \
| eval "$_EMOJI_CLI_FILTER" \
| awk '{print $'"$awk_field"'}'
}
emoji::emoji_get_with_tag() {
# reset filter
_EMOJI_CLI_FILTER="$(available "$EMOJI_CLI_FILTER")"
local awk_field=2
[ -n "${EMOJI_CLI_USE_EMOJI}" ] && awk_field=1
local tmp
tmp="$(jq -r '.[] | select(.tags[],.aliases[]|contains("'"$1"'")) | "\(.emoji) \(":" + .aliases[0] + ":")"' "$EMOJI_CLI_DICT")"
if [[ -n $tmp ]]; then
echo "$tmp"
else
local candidates i
candidates=($(jq -r '[.[] | .tags[]] | sort | unique | .[]' "$EMOJI_CLI_DICT" | emoji::fuzzy "$1"))
for i in "${candidates[@]}"; do
cat <"$EMOJI_CLI_DICT" \
| jq -r '.[] | select(.tags[],.aliases[]|contains("'"$i"'"))| "\(.emoji) \(":" + .aliases[0] + ":")"'
done
fi | sort -k2,2 \
| uniq \
| eval "$_EMOJI_CLI_FILTER" \
| awk '{print $'"$awk_field"'}'
}
emoji::cli() {
local emoji
local _BUFFER _RBUFFER _LBUFFER
_RBUFFER=$RBUFFER
if [[ -n $LBUFFER ]]; then
_LBUFFER=${LBUFFER##* }
if [[ $_LBUFFER =~ [a-zA-Z0-9+_-]$ ]]; then
local comp
comp="$(echo $_LBUFFER | grep -E -o ":?[a-zA-Z0-9+_-]+")"
emoji="$(emoji::emoji_get_with_tag "${(L)comp#:}")"
_BUFFER="${LBUFFER%$comp}${emoji:-$comp}"
else
emoji="$(emoji::emoji_get)"
_BUFFER="${LBUFFER}${emoji}"
fi
else
emoji="$(emoji::emoji_get)"
_BUFFER="${emoji}"
fi
if [[ -n "$_RBUFFER" ]]; then
BUFFER=$_BUFFER$_RBUFFER
else
BUFFER=$_BUFFER
fi
CURSOR=$#_BUFFER
zle reset-prompt
}
# source only
if [[ ! $- =~ i ]]; then
echo "this script requires interactive shell mode" 1>&2
return 1
fi
# zsh only
if ! is_zsh; then
echo "this script requires zsh" 1>&2
return 1
fi
if (( ! $+commands[jq] )); then
echo "jq: not found" 1>&2
return 1
fi
if (( ! $+commands[${"$(available "$EMOJI_CLI_FILTER")"%% *}] )); then
echo "$EMOJI_CLI_FILTER: not available as an interactive filter command" 1>&2
return 1
fi
# settings for keybind
zle -N emoji::cli
bindkey "$EMOJI_CLI_KEYBIND" emoji::cli
# vim:ft=zsh