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Without YJIT on Ruby 3.4.1

Warming up --------------------------------------
            kramdown    259.422 i/s -     270.000 times in 1.040775s (3.85ms/i)
            versadok     1.158k i/s -      1.265k times in 1.091970s (863.22μs/i)
Calculating -------------------------------------
            kramdown    276.681 i/s -     778.000 times in 2.811901s (3.61ms/i)
            versadok     1.138k i/s -      3.475k times in 3.052762s (878.49μs/i)

Comparison:

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require 'hexapdf'

doc = HexaPDF::Document.open(ARGV[0])
outline = doc.catalog[:Outlines]
first_entry = outline[:First]
last_entry = outline[:Last]

current = first_entry
loop do
  puts current[:Title]

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I'm currently implementing support for AcroForm radio button fields. The resulting PDF objects look fine to me but the radio buttons won't work in Adobe Reader and Evince.

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Edit: I think I found the problem: Acrobat needs the Catalog dictionary to be an indirect reference that is not in an object streams.

• good3.pdf: PDF encrypted with (A)RC4 using V=4, PDF version 1.5, cross-reference and object streams, Catalog dictionary not in the object stream.

---

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require 'benchmark-driver'

setup_code = <<EOF
require 'ramda'
def transduce(transformation, reducing_fn, initial, input)
  input.reduce(initial, &transformation.call(reducing_fn))
end

PUSHES = -> list, item { list.push(item) }

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const readline = require('readline');
const fs = require('fs');
var PDFDocument = require('pdfkit');

var top_margin = 72 + 0.5 * 72;
var bottom_margin = 842 - 72 - 0.5 * 72;
var margins = {top: 0, bottom: 0, left: 72, right: 72};
var pdf = new PDFDocument({size: 'A4', autoFirstPage: false, margins: margins});
var y = 842;
var font = process.argv[4] || 'Times-Roman';

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HexaPDF - A Versatile PDF Creation and Manipulation Library For Ruby

HexaPDF is a pure Ruby library with an accompanying application for working with PDF files. In short, it allows

• creating new PDF files,
• manipulating existing PDF files,
• merging multiple PDF files into one,
• extracting meta information, text, images and files from PDF files,
• securing PDF files by encrypting them and
• optimizing PDF files for smaller file size or other criteria.

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This is a follow-up benchmark to the one comparing the basic text output performance between Hexapdf, Ruby Prawn and other libraries.

This time the performance of line wrapping and simple general layouting is tested. Again, the Project Gutenberg text of Homer's Odyssey is used for this purposes. The used Ruby scripts are attached below.

The text of the Odyssey is arranged on pages of the dimension 400x1000 and 200x1000, and once with the standard PDF Type1 font Times-Roman and once with the TrueType font Times New Roman. In the case of pages of size 400x1000 no line wrapping needs to be done because each line is shorter than 400 points. In the other case (200x1000) lines need to be actually wrapped and the resulting PDF has roughly twice the number of pages.

Results:

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This is the code for the HexaPDF post "Simple Text Metrics": https://hexapdf.gettalong.org/news/2017/simple-text-metrics.html