Problem reading PDF

Dobai-Pataky_BSSSSl · December 12, 2010, 5:52am

I downloaded/installed the pdf-reader-0.9.0 using gem install.
I followed the usage advice from

yob/pdf-reader/blob/main/examples/callbacks.rb

#!/usr/bin/env ruby
# coding: utf-8

# List all callbacks generated by each page
#
# WARNING: this will generate a *lot* of output, so you probably want to pipe
#          it through less or to a text file.

require 'rubygems'
require 'pdf/reader'

filename = File.expand_path(File.dirname(__FILE__)) + "/../spec/data/cairo-basic.pdf"

PDF::Reader.open(filename) do |reader|
  reader.pages.each do |page|
    receiver = PDF::Reader::RegisterReceiver.new
    page.walk(receiver)
    
    receiver.callbacks.each do |cb|
      puts cb

This file has been truncated. show original

I posted my code in http://www.pastie.org/1369323
When running my test, I got:

Will process PDF files in “K:_Projects\Ruby_Ruby_Apps\Taxes\TaxData
\Year_End_Gain_Loss_Reporting”
Processing 2008_5275.pdf, filesize is 3434672 bytes
K:/_Utilities/ruby186-26_rc2/ruby/lib/ruby/gems/1.8/gems/pdf-
reader-0.9.0/lib/pdf/reader/buffer.rb:123:in `index’: wrong number of
arguments (0 for 1) (ArgumentError)
[snip]

Incidentally, the PDF file works fine when I open it in Firefox.

Any suggestions about how to get PDF-reading working in Ruby?

RichardOnRails · December 12, 2010, 4:40pm

On 12/12/10 5:51 AM, RichardOnRails wrote:

[snip]

K:/_Utilities/ruby186-26_rc2/ruby/lib/ruby/gems/1.8/gems/pdf-
reader-0.9.0/lib/pdf/reader/buffer.rb:123:in `index’: wrong number of
arguments (0 for 1) (ArgumentError)
[snip]

Incidentally, the PDF file works fine when I open it in Firefox.

Any suggestions about how to get PDF-reading working in Ruby?

Maybe you should try posting on pdf-reader’s own mailing list at

http://groups.google.com/group/pdf-reader/

If you can open the document without errors, it may very well be a bug
in pdf-reader.
The project’s page on github says:

"If you believe the file should be valid, or that a corrupt file didn

RichardOnRails · December 13, 2010, 3:36pm

On Dec 12, 10:40am, Stefano M. [email protected] wrote:

“If you believe the file should be valid, or that a corrupt file didn t
raise an exception, please forward a copy of the file to the maintainers
(preferably via the google group) and we can attempt to improve the code.”

–
Stefano

Thanks, Stephano.

I didn’t think of searching for a pdf website. Good suggestion!

I’m bookmarking the website. I’m postponing a visit there because I
just found A-PDF Text Extractor at A-PDF Newsletter.
It extracted text-file of the PDF’s textual content that I can work
with (in Ruby) for my current needs.

Best wishes,
Richard