require 'rake/clean'

def dia_path_to_pdf_path(diaFile)

  diaFile.pathmap("%{^#{DIADIR},#{FIGURESDIR}}X#{PDFEXT}")

end

PROJECT = 'libjava-esug12'

DIADIR = 'dia'

FIGURESDIR = 'figures'

PDFLATEX = 'pdflatex'

DIA = 'dia'

EPSTOPDF = 'epstopdf'

PDFVIEWER = 'evince'

SPELLCHECKPROG = 'aspell -t check'

BIBTEX = 'bibtex'

DIAEXT = '.dia'

EPSEXT = '.eps'

PDFEXT = '.pdf'

BBLFILE = "#{PROJECT}.bbl"

AUXFILE = "#{PROJECT}.aux"

PDFFILE = "#{PROJECT}.pdf"

DIAFIGURES = FileList['dia/*.dia']

TEXFILES = FileList['*.tex']

BIBFILES = FileList['*.bib']

CONVERTEDDIA = FileList.new.include(DIAFIGURES.collect {|each| dia_path_to_pdf_path(each)})

CLEAN.include(['*.log','*.aux','*.bbl','*.blg','*.lof'])

CLEAN.include(['*.dvi','*.toc','*.out','*.ps', '*.lot'])

CLEAN.include(['*.lol'])

CLEAN.include(CONVERTEDDIA)

CLOBBER.include("#{PROJECT}.pdf")

task :default => [:pdf]

desc "export images, compile bibtex files, generate pdf"

task :all => [:dia, :pdf, :bib ]

desc "generate pdf from #{PROJECT}.tex"

task :pdf => ["#{PROJECT}.pdf"]

file AUXFILE => (TEXFILES + CONVERTEDDIA) do

  build_pdf

end

file BBLFILE => ([ AUXFILE ] + BIBFILES) do

  build_bib

end

file "#{PROJECT}.pdf" => [ AUXFILE, BBLFILE ] + TEXFILES + CONVERTEDDIA do

  build_pdf

  build_pdf

  build_pdf #I'm not sure if its needed, but at least I'm sure index is built completely

end

desc "export dia figures from #{DIADIR}/* to #{FIGURESDIR}/ as #{EPSEXT}"

task :dia => CONVERTEDDIA

DIAFIGURES.each do |each|

  file dia_path_to_pdf_path(each) => [each] do

    build_dia each

  end

end

desc "compile bibtex files"

task :bib do

  build_pdf

  build_bib

  build_pdf

  build_pdf

end

desc "generate pdf and show it"

task :view => [:pdf] do

  sh "#{PDFVIEWER} #{PROJECT}.pdf > /dev/null 2>&1 &"

end

desc "check spelling"

task :spellcheck do

  spellcheck()

end

def build_dia(diaFile) 

  epsFile = diaFile.ext(EPSEXT)

  pdfFile = diaFile.pathmap("%{^#{DIADIR},#{FIGURESDIR}}X#{PDFEXT}")

  sh "#{DIA} #{diaFile} -e #{epsFile}"

  sh "#{EPSTOPDF} #{epsFile} --outfile=\"#{pdfFile}\""

  rm epsFile

end

def build_pdf()

  sh "#{PDFLATEX} #{PROJECT}"

end

def build_bib()

  #hackety hack - mtime granularity in ruby(or linux & ruby) is second

  puts 'sleeping for 2 seconds, because I\'m lazy'

  sleep 2

  sh "#{BIBTEX} #{PROJECT}"

end

def spellcheck() 

  TEXFILES.each do

    |each|

    sh "#{SPELLCHECKPROG} #{each}"

  end

end