Class: Origami::PDF::LinearParser

Inherits:
Parser show all
Defined in:
lib/origami/parsers/pdf/linear.rb

Overview

Create a new PDF linear Parser.

Constant Summary

Constants inherited from Origami::Parser

Origami::Parser::VERBOSE_DEBUG, Origami::Parser::VERBOSE_INFO, Origami::Parser::VERBOSE_QUIET, Origami::Parser::VERBOSE_TRACE

Instance Attribute Summary

Attributes inherited from Origami::Parser

#options

Instance Method Summary collapse

Methods inherited from Parser

#initialize

Methods inherited from Origami::Parser

#debug, #defer_type_cast, #error, #info, #initialize, #parse_object, #parse_trailer, #parse_xreftable, #pos, #pos=, #target_data, #target_filename, #target_filesize, #trace, #warn

Constructor Details

This class inherits a constructor from Origami::PDF::Parser

Instance Method Details

#parse(stream) ⇒ Object 



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# File 'lib/origami/parsers/pdf/linear.rb', line 32

def parse(stream)
    super

    pdf = parse_initialize

    #
    # Parse each revision
    #
    revision = 0
    until @data.eos? do
        begin
            pdf.add_new_revision unless revision.zero?
            revision = revision + 1

            info "...Parsing revision #{pdf.revisions.size}..."
            loop do
                break if (object = parse_object).nil?
                pdf.insert(object)
            end

            pdf.revisions.last.xreftable = parse_xreftable

            trailer = parse_trailer
            pdf.revisions.last.trailer = trailer

            locate_xref_stream(pdf, pdf.revisions.last)

        rescue
            error "Cannot read : " + (@data.peek(10) + "...").inspect
            error "Stopped on exception : " + $!.message

            break
        end
    end

    pdf.loaded!

    parse_finalize(pdf)
end