inspectbibtex.rb

#!/usr/bin/env ruby

# Experimentally checks bibtex database for warnings.
# latexmk and pdflatex required

require 'fileutils'
require 'ruby-progressbar'

raise 'Usage: inspectbibtex.rb BIBFILE [start_citation]' unless ARGV[0]

bibfile = ARGV[0]
raise 'No bibfile' unless File.exists?(bibfile)
start = ARGV[1]

cites = IO.readlines(bibfile).map { |s| $1 if s.strip.force_encoding('koi8-r') =~ /^@[a-z]+{(.*),/ }.compact
cites = cites.drop_while { |cite| cite != start } if start

puts "Read #{cites.size} cites"

progressbar = ProgressBar.create(:title => "Cites", :format => '%t: |%B| %p%% %E ', :total => cites.size)
cites.each do |cite|
  progressbar.increment
	progressbar.log cite

	IO.write 'test.tex', <<EOF
\\documentclass{article}
\\usepackage[english,russian]{babel}
\\usepackage[utf8x]{inputenc}
\\begin{document}
\\selectlanguage{russian}
\\cite{#{cite}}
\\inputencoding{koi8-r}
\\bibliographystyle{gost2008}
\\bibliography{bibliogr}
\\end{document}
EOF

	FileUtils.rm_f %w{aux bbl blg fdb_latexmk fls log pdf}.map { |ext| 'test.'+ext}
	
	`latexmk -dvi- -ps- -pdf -pdflatex='pdflatex -interaction=batchmode %O %S' test.tex 2>/dev/null | grep '^Warning'`.
		encode("utf-8", invalid: :replace, undef: :replace, replace: '').split("\n").each { |s| progressbar.log s }
end