H2P: HTML in, PDF out
H2P takes an HTML blob, uses wkhtmltopdf to convert it to PDF, and returns a PDF blob.
Installation
gem install 'h2p'
# you'll also need to have wkhtmltopdf installed:
gem install 'wkhtmltopdf-binary'
Or just use the source(TM).
Usage
...
my_html = '<html><body><h1>Hello, world!</h1></body></html>'
my_pdf = H2P.convert(my_html)
...
Use the source
Adding a dependency to your Gemfile is just another thing to keep track off,
on top of everything else. Luckily, H2P is so small you can just copy the
source into your project:
require 'tmpdir'
require 'fileutils'
module H2P
def self.tmp_path(ext)
stamp = Time.now.to_f
@counter ||= 0
File.join(Dir.tmpdir, "h2p-#{stamp}-#{@counter += 1}.#{ext}")
end
def self.convert(html)
html_path = tmp_path(:html)
pdf_path = tmp_path(:pdf)
p [html_path, pdf_path]
File.open(html_path, 'w+') { |f| f << html }
system('wkhtmltopdf', '-q', html_path, pdf_path)
IO.read(pdf_path)
ensure
FileUtils.rm(html_path) rescue nil
FileUtils.rm(pdf_path) rescue nil
end
end