Download Google webfonts for local usage

download-google-web-fonts-for-local-hosting-fetch.sh

#!/usr/bin/env bash

# Use with bash 4.0+

#==========================================================================================
# Original Script from Clemens Lang, neverpanic.de
# https://neverpanic.de/blog/2014/03/19/downloading-google-web-fonts-for-local-hosting/
# Modified by Chris Jung, campino2k.de
# * Rename Files to be compatible with Windows File System (remove spaces and colon)
# * Add "local()" to src like Google does to skip downloading if System has font installed
#==========================================================================================

declare -a families
families+=('PT Sans:400')
families+=('PT Sans:700')
families+=('PT Sans:400italic')
families+=('PT Sans:700italic')
families+=('PT Serif:400')
families+=('PT Serif:700')
families+=('PT Serif:400italic')
families+=('PT Serif:700italic')

url="http://fonts.googleapis.com/css"
css="font.css"

declare -A useragent
useragent[eot]='Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)'
useragent[woff]='Mozilla/5.0 (Windows NT 6.1; WOW64; rv:27.0) Gecko/20100101 Firefox/27.0'
useragent[svg]='Mozilla/4.0 (iPad; CPU OS 4_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/4.1 Mobile/9A405 Safari/7534.48.3'
useragent[ttf]='Mozilla/5.0 (Windows NT 6.1) AppleWebKit/534.54.16 (KHTML, like Gecko) Version/5.1.4 Safari/534.54.16'

>"$css"
for family in "${families[@]}"; do
	echo -n "Downloading ${family}... "
	printf "@font-face {\n" >>"$css"

	fontname=$(echo "$family" | awk -F : '{print $1}')
	fontnameescaped="$(echo "$family" | sed -E 's/( |:)/_/g')"
	fontstyle=$(echo "$family" | awk -F : '{print $2}')
	fontweight=$(echo "$fontstyle" | sed -E 's/italic$//g')

	printf "\tfont-family: '%s';\n" "$(echo "$family" | awk -F : '{print $1}')" >>"$css"

	case "$fontstyle" in
		*italic)
			printf "\tfont-style: italic;\n" >>"$css"
          		;;
		*)
			printf "\tfont-style: normal;\n" >>"$css"
			;;
		esac

	printf "\tfont-weight: %s;\n" "${fontweight:-normal}" >>"$css"
	printf "\tsrc:\n" >>"$css"

	local_name=$(curl -sf --get --data-urlencode "family=$family" "$url" | grep -E "src:" | sed -E "s/^.*src: local\\('([^']+)'\\),.*$/\\1/g")
	local_postscript_name=$(curl -sf --get --data-urlencode "family=$family" "$url" | grep -E "src:" | sed -E "s/^.*, local\\('([^']+)'\\),.*$/\\1/g")

	printf "\t\tlocal('%s'),\n" "$local_name" >>"$css"
	printf "\t\tlocal('%s'),\n" "$local_postscript_name" >>"$css"

	for uakey in eot woff ttf svg; do
		echo -n "$uakey "
		if [ "$uakey" != "svg" ]; then
			pattern="http:\\/\\/[^\\)]+\\.$uakey"
		else
			pattern="http:\\/\\/[^\\)]+"
		fi
		file=$(curl -sf -A "${useragent[$uakey]}" --get --data-urlencode "family=$family" "$url" | grep -Eo "$pattern" | sort -u)
		printf "\t\t/* from %s */\n" "$file" >>"$css"
		if [ "$uakey" == "svg" ]; then
			svgname=$(echo "$file" | sed -E 's/^[^#]+#(.*)$/\1/g')
		fi
		curl -sfL "$file" -o "${fontnameescaped}.$uakey"

		case "$uakey" in
			eot)
				printf "\t\turl('%s?#iefix') format('embedded-opentype'),\n" "${fontnameescaped}.$uakey" >>"$css"
				;;
			woff)
				printf "\t\turl('%s') format('woff'),\n" "${fontnameescaped}.$uakey" >>"$css"
				;;
			ttf)
				printf "\t\turl('%s') format('ttf'),\n" "${fontnameescaped}.$uakey" >>"$css"
				;;
			svg)
				printf "\t\turl('%s#%s') format('svg');\n" "${fontnameescaped}.${uakey}" "$svgname" >>"$css"
				;;
		esac
	done

	printf "}\n" >>"$css"
	echo
done