Module: Mn2pdf

Defined in:
lib/mn2pdf.rb,
lib/mn2pdf/version.rb

Constant Summary collapse

MN2PDF_JAR_PATH = 
File.join(File.dirname(__FILE__), "../bin/mn2pdf.jar")
DEFAULT_JAVA_OPTS = 
%w[-Xss5m -Xmx2048m -Djava.awt.headless=true].freeze
FONTS_MANIFEST = 
:font_manifest
VERSION = 
"1.72".freeze
MN2PDF_JAR_VERSION = 
VERSION

Class Method Summary collapse

Class Method Details

.build_cmd(url, output, xslt) ⇒ Object 



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# File 'lib/mn2pdf.rb', line 51

def self.build_cmd(url, output, xslt)
  return if url.nil? || output.nil? || xslt.nil?

  ["java", *jvm_options,
   "-jar", MN2PDF_JAR_PATH,
   "--xml-file", quote(url),
   "--xsl-file", quote(xslt),
   "--pdf-file", quote(output)]
end

.convert(url_path, output_path, xsl_stylesheet, options = {}) ⇒ Object 



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# File 'lib/mn2pdf.rb', line 36

def self.convert(url_path, output_path, xsl_stylesheet, options = {})
  cmd = build_cmd(url_path, output_path, xsl_stylesheet)

  return unless cmd

  case options
  when String
    mn2pdf(cmd + [options])
  when Hash
    mn2pdf_hash(cmd, options)
  else
    warn "Unsupported options type #{options.class}"
  end
end

.dump_fontist_manifest_locations(manifest) ⇒ Object 



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# File 'lib/mn2pdf.rb', line 107

def self.dump_fontist_manifest_locations(manifest)
  Tempfile.create(["fontist_locations", ".yml"]) do |f|
    f.write manifest.to_yaml
    f.flush

    yield f.path
  end
end

.help ⇒ Object 



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# File 'lib/mn2pdf.rb', line 23

def self.help
  cmd = ["java", *jvm_options, "-jar", MN2PDF_JAR_PATH].join(" ")
  # help message goes to STDERR (from mn2pdf v1.36)
  _, help_message, = Open3.capture3(cmd)
  help_message
end

.jvm_options ⇒ Object 



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# File 'lib/mn2pdf.rb', line 11

def self.jvm_options
  options = DEFAULT_JAVA_OPTS.dup

  if RbConfig::CONFIG["host_os"].match?(/darwin|mac os/)
    options << "-Dapple.awt.UIElement=true"
  end

  options << "-Duser.home=#{Dir.home}"

  options
end

.mn2pdf(cmd) ⇒ Object 



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# File 'lib/mn2pdf.rb', line 74

def self.mn2pdf(cmd)
  cmd = cmd.join(" ")
  puts cmd
  stdout, stderr, status = Open3.capture3(cmd)

  unless status.success?
    puts_error_log(stdout, stderr)

    raise StandardError.new("mn2pdf failed! #{parse_error_msg(stderr)}")
  end
end

.mn2pdf_hash(cmd, options) ⇒ Object 



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# File 'lib/mn2pdf.rb', line 61

def self.mn2pdf_hash(cmd, options)
  manifest = options.delete(FONTS_MANIFEST)
  options_to_cmd(options, cmd)
  if manifest
    dump_fontist_manifest_locations(manifest) do |manifest_path|
      cmd << "--font-manifest" << quote(manifest_path)
      mn2pdf(cmd)
    end
  else
    mn2pdf(cmd)
  end
end

.options_to_cmd(options, cmd) ⇒ Object 



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# File 'lib/mn2pdf.rb', line 116

def self.options_to_cmd(options, cmd)
  options.each do |k, v|
    sep = k.to_s.end_with?("=") ? "" : " "
    cmd << "#{k}#{sep}#{quote(v)}"
  end
end

.parse_error_msg(stderr) ⇒ Object 



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# File 'lib/mn2pdf.rb', line 94

def self.parse_error_msg(stderr)
  err = stderr.split("\n").detect { |line| line.start_with? "Error: " }

  err ? err[7..-1] : stderr.strip
end

.puts_error_log(stdout, stderr) ⇒ Object 



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# File 'lib/mn2pdf.rb', line 86

def self.puts_error_log(stdout, stderr)
  puts ["Fatal error!", "STDOUT:", stdout.strip, "STDERR:", stderr.strip]
    .join("\n")
    .split("\n")
    .map { |line| "[mn2pdf] #{line}" }
    .join("\n")
end

.quote(str) ⇒ Object 



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# File 'lib/mn2pdf.rb', line 100

def self.quote(str)
  return "" if str.nil? || str.empty?
  return str if /^'.*'$/.match(str) || /^".*"$/.match(str)

  %("#{str}")
end

.version ⇒ Object 



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# File 'lib/mn2pdf.rb', line 30

def self.version
  cmd = ["java", *jvm_options, "-jar", MN2PDF_JAR_PATH, "-v"].join(" ")
  message, = Open3.capture3(cmd)
  message.strip
end