epubValidator - Check if your EPUB eBooks are valid
This library will check that your .epub files are valid IDPF EPUB documents (version 2.x and 3.0) and return a successful or error message. It can be called as a Ruby library, or invoked from the command line.
For more about the IDPF see http://idpf.org
For more about the epubcheck tool see http://code.google.com/p/epubcheck/
gem install epub_validator
Sample usage and output:
require 'epub_validator' epub = EpubValidator.check('/path/to/sample.epub') puts "Invalid!" unless epub.valid? epub.messages.each do |m| puts m end => Invalid! => ERROR: OPS/toc.ncx(21): 'OPS/': referenced resource exists, but not declared in the OPF file
Now from the command line:
$ epub_validator /path/to/sample.epub Checking....FAILED! This is not a valid EPUB 3.0 ebook. ERROR: OPS/toc.ncx(21): 'OPS/': referenced resource exists, but not declared in the OPF file
Java must be installed and set in your PATH.
- Command line: accept directory containing many .epub files for processing.
- Command line: have switch for writing results to log file
- Format "ERROR" and "WARNING" output for more intuitive instructions.