rofi-emoji

#!/usr/bin/env bash
#
#   Use rofi to pick emoji because that's what this
#   century is about apparently...
#
#   Requirements:
#     rofi, xsel, xdotool, curl, libxml2
#
#   Usage:
#     1. Download all emoji
#        $ rofi-emoji --download
#
#     2. Run it!
#        $ rofi-emoji
#
#   Notes:
#     * You'll need a emoji font like "Noto Emoji" or "EmojiOne".
#     * "Return" will automatically paste it WITHOUT writing it to your
#       clipboard.
#     * "Ctrl+C" will copy it to your clipboard WITHOUT pasting.
#

# Basic rofi launch command. Additional option can also be provided
# when calling this script.
LAUNCHER="rofi -dmenu -i -p emoji -kb-custom-1 Ctrl+c $@"

# Where to save the emojis to.
EMOJI_FILE="$HOME/.cache/emojis.txt"
EMOJI_HIST_FILE="$HOME/.cache/emojis.history"

DELIMITER='   '

# Urls of emoji to download.
# You can remove what you don't need.
URLS=(
    'https://emojipedia.org/people/'
    'https://emojipedia.org/nature/'
    'https://emojipedia.org/food-drink/'
    'https://emojipedia.org/activity/'
    'https://emojipedia.org/travel-places/'
    'https://emojipedia.org/objects/'
    'https://emojipedia.org/symbols/'
    'https://emojipedia.org/flags/'
)


function notify() {
    if [ "$(command -v notify-send)" ]; then
        notify-send "$1" "$2"
    fi
}


function download() {
    notify `basename "$0"` 'Downloading all emoji for your pleasure'

    echo "" > "$EMOJI_FILE"

    for url in "${URLS[@]}"; do
        echo "Downloading: $url"

        # Download the list of emoji and remove all the junk around it
        emojis=$(curl -s "$url" | \
                 xmllint --html \
                         --xpath '//ul[@class="emoji-list"]' - 2>/dev/null)

        # Get rid of starting/closing ul tags
        emojis=$(echo "$emojis" | head -n -1 | tail -n +1)

        # Extract the emoji and its description
        emojis=$(echo "$emojis" | \
                 sed -rn "s/.*<span class=\"emoji\">(.*)<\/span> (.*)<\/a><\/li>/\\1$DELIMITER\\2/p")

        echo "$emojis" >> "$EMOJI_FILE"
    done

    notify `basename "$0"` "We're all set!"
}


function display() {
    touch "$EMOJI_HIST_FILE"

    emoji_hist=$(cat "$EMOJI_HIST_FILE")
    emoji_orig=$(cat "$EMOJI_FILE")

    # Combined emojis without:
    #  - commented lines
    #  - empty lines
    #  - duplicates (due to history)
    emoji=$(echo -e "$emoji_hist\n$emoji_orig" \
            | grep -v '#' | grep -v '^[[:space:]]*$' | awk '!x[$0]++')

    # Display without the history count
    line=$(echo "$emoji" | $LAUNCHER)
    exit_code=$?

    if [ $exit_code -eq 1 ]; then
        exit 0
    fi

    # Add to top of the history
    emoji_hist="${line}\n${emoji_hist}"
    # Rewrite history file without duplicates
    echo -e "$emoji_hist" | awk '!x[$0]++' > "$EMOJI_HIST_FILE"

    # Extract emoji
    moji=$(echo "$line" | awk -F "   " '{print $1}')

    if [ $exit_code -eq 0 ]; then
        echo -n $moji | xsel -i -p -b
        xdotool key Ctrl+Shift+v
    elif [ $exit_code -eq 10 ]; then
        echo -n $moji | xsel -i -p -b
    fi
}


# Some simple argparsing
if [[ "$1" =~ -D|--download ]]; then
    download
    exit 0
elif [[ "$1" =~ -h|--help ]]; then
    echo "usage: $0 [-D|--download]"
    exit 0
fi

# Download all emoji if they don't exist yet
if [ ! -f "$EMOJI_FILE" ]; then
    download
fi

# display displays :)
display