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Readium Go Toolkit

More documentation coming soon! Things are changing too quickly right now.

For development, run go run cmd/server/main.go to start the server, which by default listens on 127.0.0.1:5080. Check out the example configuration file for configuration options.

Command line utility

The rwp command provides utilities to parse and generate Web Publications.

To install rwp in ~/go/bin, run make install. Use make build to build the binary in the current directory.

Generating a Readium Web Publication Manifest

The rwp manifest command will parse a publication file (such as EPUB, PDF, audiobook, etc.) and build a Readium Web Publication Manifest for it. The JSON manifest is printed to stdout.

Examples:

  • Print out a compact JSON RWPM.
    rwp manifest publication.epub
  • Pretty-print a JSON RWPM using two-space indent.
    rwp manifest --indent "  " publication.epub
  • Extract the publication title with jq.
    rwp manifest publication.epub | jq -r .metadata.title

Accessibility inference

rwp manifest can infer additional accessibility metadata when they are missing, with the --infer-a11y flag. It takes one of the following arguments:

Option Description
no (default) No accessibility metadata will be inferred.
merged Accessibility metadata will be inferred and merged with the authored ones in metadata.accessibility.
split Accessibility metadata will be inferred but stored separately in metadata.inferredAccessibility.
rwp manifest --infer-a11y=merged publication.epub  | jq .metadata
Inferred metadata
Key Value Inferred?
accessMode auditory If the publication contains a reference to an audio or video resource (inspect resources and readingOrder in RWPM)
accessMode visual If the publications contains a reference to an image or a video resource (inspect resources and readingOrder in RWPM)
accessModeSufficient textual If the publication is partially or fully accessible (WCAG A or above)
Or if the publication does not contain any image, audio or video resource (inspect "resources" and "readingOrder" in RWPM)
Or if the only image available can be identified as a cover
feature displayTransformability If the publication is fully accessible (WCAG AA or above)
⚠️ This property should only be inferred for reflowable EPUB files as it doesn't apply to other formats (FXL, PDF, audiobooks, CBZ/CBR).
feature printPageNumbers If the publications contains a page list (check for the presence of a pageList collection in RWPM)
feature tableOfContents If the publications contains a table of contents (check for the presence of a toc collection in RWPM)
feature MathML If the publication contains any resource with MathML (check for the presence of the contains property where the value is mathml in readingOrder or resources in RWPM)
feature synchronizedAudioText If the publication contains any reference to Media Overlays (TBD in RWPM)

HTTP streaming of local publications

rwp serve starts an HTTP server that serves EPUB, CBZ and other compatible formats from a given directory. A log is printed to stdout.