Module: PDFToImage

Defined in:
lib/pdftoimage.rb,
lib/pdftoimage.rb,
lib/pdftoimage/image.rb,
lib/pdftoimage/version.rb

Defined Under Namespace

Classes: Image, PDFError

Constant Summary collapse

VERSION =

pdftoimage version

"0.3.2"
@@pdf_temp_dir =

A class variable for storing the location of our temp folder

File.join(Dir.tmpdir())

Class Method Summary collapse

Class Method Details

.exec(cmd, error = nil) ⇒ String

Executes the specified command, returning the output.

Parameters:

  • cmd (String) —

    The command to run

Returns:

  • (String) —

    The output of the command



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# File 'lib/pdftoimage.rb', line 69

def exec(cmd, error = nil)
    output = `#{cmd}`
    if $? != 0
        if error == nil
            raise PDFError, "Error executing command: #{cmd}"
        else
            raise PDFError, error
        end
    end

    return output
end

.from_blob(data, &block) ⇒ Array

Opens a PDF from raw binary data.

Parameters:

  • data (String) —

    Binary string of PDF content

Returns:

  • (Array) —

    An array of images



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# File 'lib/pdftoimage.rb', line 60

def from_blob(data, &block)
    filename = write_to_tempfile(data)
    open(filename, &block)
end

.open(source, &block) ⇒ Array

Opens a PDF document and prepares it for splitting into images.

Parameters:

  • source (String, IO) —

    A filename, URL, or IO object containing PDF data

Returns:

  • (Array) —

    An array of images



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# File 'lib/pdftoimage.rb', line 32

def open(source, &block)
    filename = resolve_source(source)

    if not File.exist?(filename)
        raise PDFError, "File '#{filename}' not found."
    end

    pages = page_count(filename)

    # Array of images
    images = []

    1.upto(pages) { |n|
        dimensions = page_size(filename, n)
        image = Image.new(filename, random_filename, n, dimensions, pages)
        images << image
    }

    images.each(&block) if block_given?

    return images
end