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Give it a <link> from Google fonts and get back CSS with fonts embedded
#!/usr/bin/ruby
# encoding: utf-8
# Grab google web fonts and embed them as base64 data URIs
# <http://brettterpstra.com/2015/03/14/embedding-google-web-fonts/>
require 'base64'
if ARGV.length > 0
input = ARGV
elsif STDIN.stat.size > 0
input = STDIN.read.strip.split(/\n+/)
else
$stderr.puts "No input"
Process.exit 1
end
output = ""
input.each {|line|
if line =~ /^\s*<link.*?>\s*$/
url = line.match(/href='(.*?)'/)
if url
css_url = url[1]
else
$stderr.puts "Error matching url"
end
css = %x{curl -sS '#{css_url}'}.strip
css.gsub!(/(src: .*?, url\()(.*?)(\) format\(')(.*?)('\);)/).each {|src|
pre = $1
font_url = $2
mid = $3
font_fmt = $4
post = $5
font_ext = font_url.match(/\.(\w+)$/)[1]
font_src = %x{curl -sS '#{font_url}'}
enc = Base64.encode64(font_src).strip.gsub(/\n/,'')
%Q{src:url("data:font/#{font_ext};base64,#{enc}") format('#{font_fmt}');}
}
output += css + "\n"
else
next
end
}
$stdout.puts output
@eikaramba

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@eikaramba eikaramba commented Sep 29, 2015

for all windows users. you need to change the quotes to double quotes for curl.

so change line 27 and 36 and instead of curl -sS 'XXXX' use curl -sS "XXX"

@sospedra

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@sospedra sospedra commented Dec 21, 2015

brilliant

@ideaOwl

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@ideaOwl ideaOwl commented Aug 24, 2016

Syntax to run this on Windows, to add on top of @eikaramba's change, is:

ruby font_grabber.rb "<link href='https://fonts.googleapis.com/css?family=Merriweather:300,400,700' rel='stylesheet'>" > fonts.css

@seanirby

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@seanirby seanirby commented Oct 25, 2016

You will want to change to change the regex on line 20 support double quotes.

/href=['"](.*?)['"]/
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