Class: Docsplit::CommandLine

Inherits:
Object
  • Object
show all
Defined in:
lib/docsplit/command_line.rb

Overview

A single command-line utility to separate a PDF into all its component parts.

Constant Summary collapse 

<<-EOS
docsplit breaks apart documents into images, text, or individual pages.
It wraps GraphicsMagick, Poppler, PDFTK, and JODConverter.

Usage:
  docsplit COMMAND [OPTIONS] path/to/doc.pdf
  Main commands:
pages, images, text, pdf.
  Metadata commands:
author, date, creator, keywords, producer, subject, title, length.

Example:
  docsplit images --size 700x --format jpg document.pdf

Dependencies:
  Ruby, Java, A working GraphicsMagick (gm) command,
  and a headless OpenOffice server for non-PDF documents.

Options:
(size, pages and format can take comma-separated values)

EOS

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CommandLine

Creating a CommandLine runs off of the contents of ARGV.



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# File 'lib/docsplit/command_line.rb', line 33

def initialize
  parse_options
  cmd = ARGV.shift
  @command = cmd && cmd.to_sym
  run
end

Instance Method Details

#run ⇒ Object

Delegate to the Docsplit Ruby API to perform all extractions.



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# File 'lib/docsplit/command_line.rb', line 41

def run
  begin
    case @command
    when :images  then Docsplit.extract_images(ARGV, @options)
    when :pages   then Docsplit.extract_pages(ARGV, @options)
    when :text    then Docsplit.extract_text(ARGV, @options)
    when :pdf     then Docsplit.extract_pdf(ARGV, @options)
    else
      if METADATA_KEYS.include?(@command)
        value = Docsplit.send("extract_#{@command}", ARGV, @options)
        puts value unless value.nil?
      else
        usage
      end
    end
  rescue ExtractionFailed => e
    puts e.message.chomp
    exit(1)
  end
end

#usage ⇒ Object

Print out the usage help message.



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# File 'lib/docsplit/command_line.rb', line 63

def usage
  puts "\n#{@option_parser}\n"
  exit
end