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November 23, 2017 12:09
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Displays a fontawesome cheatsheet in your terminal - Requires patched fonts such as nerd-fonts (https://github.com/ryanoasis/nerd-fonts)
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#!/usr/bin/env bash | |
set -e | |
if [[ -z "$ENABLE_CACHING" ]] | |
then | |
export ENABLE_CACHING=1 | |
fi | |
if [[ -z "$FONTAWESOME_CACHE" ]] | |
then | |
export FONTAWESOME_CACHE="$HOME/.cache" | |
fi | |
mkdir -p "$FONTAWESOME_CACHE" | |
if [[ -z "$LAST_MODIFIED_FILE" ]] | |
then | |
if [[ "$ENABLE_CACHING" -ne 1 ]] | |
then | |
export LAST_MODIFIED_FILE=/dev/null | |
else | |
export LAST_MODIFIED_FILE="$FONTAWESOME_CACHE/fontawesome.txt" | |
fi | |
fi | |
if [[ -z "$FONTAWESOME_ICONS" ]] | |
then | |
if [[ "$ENABLE_CACHING" -ne 1 ]] | |
then | |
export FONTAWESOME_ICONS=/dev/null | |
else | |
export FONTAWESOME_ICONS="$FONTAWESOME_CACHE/fontawesome-icons.txt" | |
fi | |
fi | |
# Basic filtering with grep e.g `./fontawesome.sh music` | |
# will output "fa-music: [f001] ". For more advanced | |
# filtering pipe to another program directly e.g: | |
# `./fontawesome.sh | fzf` | |
if [[ ! -z "$1" ]] | |
then | |
$0 | grep -Ei "fa-.*$1.*" | |
exit "$?" | |
fi | |
IFS=$'\n' | |
# To Do: | |
# * For the sake of simplicity two HTTP requests are made. | |
# Can we do this with one? | |
get_icons() { | |
curl --head -s -L http://fontawesome.io/cheatsheet/ | grep -E '^Last-Modified:' | head -1 > "$LAST_MODIFIED_FILE" | |
curl -s -L http://fontawesome.io/cheatsheet/ -H 'Accept-Encoding: gzip' | gunzip -cf | html2text | grep -E 'fa-.* \[.*\]' | sed -e 's/&#x//' -e 's/;//' -e 's/^.* fa-/fa-/g' -e 's/&#x//' -e 's/;//' | |
} | |
# Extremely basic cache checking - When the Last-Modified changes | |
# our cache will be invalidated. | |
# To Do: | |
# * What happens if there's no Internet? curl will probably fail | |
# which might get treated as the cache being invalidated? | |
# Can we detect this and use our local cache? | |
check_cache() { | |
if [[ "$ENABLE_CACHING" -ne 1 ]] | |
then | |
return 1 | |
fi | |
if [[ -f "$LAST_MODIFIED_FILE" ]] | |
then | |
CURRENT_MODIFIED="$(< "$LAST_MODIFIED_FILE")" | |
else | |
CURRENT_MODIFIED="" | |
fi | |
LAST_MODIFIED="$(curl --head -s -L http://fontawesome.io/cheatsheet/ | grep -E '^Last-Modified:' | head -1)" | |
if [[ "$CURRENT_MODIFIED" == "$LAST_MODIFIED" ]] | |
then | |
return 0 | |
else | |
return 1 | |
fi | |
} | |
if check_cache | |
then | |
if [[ -f "$FONTAWESOME_ICONS" ]] | |
then | |
column -x "$FONTAWESOME_ICONS" | |
exit "$?" | |
fi | |
fi | |
for icon in $(get_icons) | |
do | |
if grep -qE ' \(alias\) ' <<< "$icon" | |
then | |
ALIAS="(alias)" | |
else | |
ALIAS="" | |
fi | |
NAME=$(awk '{print $1}' <<< "$icon") | |
ICON=$(grep -ohE '\[.*\]' <<< "$icon") | |
UNICODE="$(cut -c 2- <<< "$ICON" | rev | cut -c 2- | rev)" | |
printf "%s: %s %s \U$UNICODE\n" "$NAME" "$ALIAS" "$ICON" | tee -a "$FONTAWESOME_ICONS" | |
done | column -x |
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