nerd-fonts/bin/scripts/generate-css.sh

#!/usr/bin/env bash
# Nerd Fonts Version: 2.3.3
# Script Version: 1.2.0
# Generates CSS file for the font and cheat sheet code

# shellcheck disable=SC1091
source ./lib/i_all.sh

output_css_file="../../css/nerd-fonts-generated.css"
output_css_min_file="../../css/nerd-fonts-generated.min.css"
header_css_file="./data/css-header.txt"
header_css_min_file="./data/css-min-header.txt"
output_json_file="../../glyphnames.json"

if [ ! -d "../../temp" ]; then
  mkdir "../../temp"
fi
output_cheat_sheet_file="../../temp/2017-01-04-icon-cheat-sheet.md"
cheat_sheet_head_file="./data/cheatsheet-head.txt"
cheat_sheet_foot_file="./data/cheatsheet-foot.txt"

LINE_PREFIX="# [Nerd Fonts] "
version="2.3.3"

# clear files
true > "$output_css_file" 2> /dev/null
true > "$output_css_min_file" 2> /dev/null
true > "$output_cheat_sheet_file" 2> /dev/null
true > "$output_json_file" 2> /dev/null

# describe how the classes were established
{
  printf "/*\\n"
  printf " *%s Website: https://www.nerdfonts.com\\n" "$LINE_PREFIX"
  printf " *%s Development Website: https://github.com/ryanoasis/nerd-fonts\\n" "$LINE_PREFIX"
  printf " *%s Version: %s\\n" "$LINE_PREFIX" "$version"
  printf " *%s The following is generated from the build script\\n" "$LINE_PREFIX"
  printf " */\\n"
} | tee "$output_css_min_file" >> "$output_css_file"

# add top section of CSS
{
  printf "\\n"
  cat "$header_css_file"
} >> "$output_css_file"
cat "$header_css_min_file" | tr -d '\n' >> "$output_css_min_file"

cat "$cheat_sheet_head_file" > "$output_cheat_sheet_file"

# add top section of json
{
  printf "{\"METADATA\":{"
  printf "\"website\":\"https://www.nerdfonts.com\","
  printf "\"development-website\":\"https://github.com/ryanoasis/nerd-fonts\","
  printf "\"version\":\"$version\","
  printf "\"date\":\"$(date -u --rfc-3339=seconds)\""
  printf "}"
} >> "$output_json_file"

echo;

# shellcheck disable=SC2154
# we know the '$i' is from the sourced file
for var in "${!i@}"; do
  # trim 'i_' prefix
  glyph_name=${var#*_}
  # replace _ with -
  glyph_name=${glyph_name/_/-}
  glyph_char=${!var}
  glyph_code=$(printf "%x" "'$glyph_char'")

  #echo "$var=${!var}"

  #echo "$glyph_name"
  #echo "$glyph_char"
  #echo "$glyph_code"
  #printf "%x" "'$glyph_char'"

  # generate css rules
  {
    printf ".nf-%s:before {" "$glyph_name"
    printf "\\n"
    printf "  content: \"\\%s\";" "$glyph_code"
    printf "\\n"
    printf "}"
    printf "\\n"
  } >> "$output_css_file"

  # generate css min rules
  {
    printf ".nf-%s:before{content:\"\\%s\"}" "$glyph_name" "$glyph_code"
  } >> "$output_css_min_file"

  # generate HTML cheat sheet
  {
    printf "  <div class=\"column\">"
    printf "\\n"
    if [[ "$glyph_name" = mdi-* ]]; then
      printf "    <span class=\"corner-red\"></span><span class=\"corner-text\">obsolete</span>\\n"
    fi
    printf "    <div class=\"nf nf-%s center\"></div>" "$glyph_name"
    printf "\\n"
    printf "    <div class=\"class-name\">nf-%s</div><div title=\"Copy Hex Code to Clipboard\" class=\"codepoint\">%s</div>" "$glyph_name" "$glyph_code"
    printf "\\n"
    printf "  </div>"
    printf "\\n"
  } >> "$output_cheat_sheet_file"

  # generate json entry
  {
    printf ",\"%s\":{\"char\":\"%s\",\"code\":\"%s\"}" "$glyph_name" "$glyph_char" "$glyph_code"
  } >> "$output_json_file"

done

cat "$cheat_sheet_foot_file" >> "$output_cheat_sheet_file"
printf "}\n" >> "$output_json_file"

printf "Generated CSS, json, and Cheat Sheet HTML\\n"