#!/usr/bin/ruby

# doc2doku
# takes in raw antiword output and converts, to some extent,
# to dokuwiki format (including interlacing footnotes)

DELIMITER=/\-{23}\n/
patterns = { # cp1252
  "—" => "---",
  "–" => "--",
  "‘" => "'",
  "’" => "'",
  "“" => '"',
  "”" => '"',
  "…" => "..."
}

# functions

class String
  def title?
    return self =~ /^=.*=$/
  end
  def quote?
    return self =~ /^>/
  end
  def blank?
    return self.strip.empty?
  end
  def table?
    self =~ /^[|^]/
  end
end

# find footnotes

inputname = ARGV[0]

input = File.readlines(inputname)

footnotes=false
input.each do |line|
  if footnotes
    if line =~ /\[(\d+)\]\s(.*)\n/
      # mew footnote
      footnotes[$1.to_i] = $2
     elsif $2 and $2.strip.length > 0
      footnotes[length-1] += $2
    end
  elsif line =~ DELIMITER
    footnotes=[]
  end
end

# insert footnotes in text

if footnotes
  input.each do |line|
    if line =~ /\[(\d{1,3})\]/
      number = $1.to_i
      if footnotes[number]
        match = $&
        line.sub!(match, "((#{footnotes[number]}))")
        redo
      end
    end
  end
elsif
  puts "No footnotes found."
end

# fix crap

input.each do |line|
  patterns.each do |broken, fixed|
    if line.include? broken
      line.sub!(broken, fixed)
      redo
    end
  end
end

# quotes and titles

input.each_with_index do |line, index|
  if line =~ /^\s{4}(.*)$/
    input[index] = "> #{$1}\n"
  elsif line =~ /^\s{3}(.*)$/
    input[index] = "======#{$1}======\n"
  end
end

# output everything

input.each_with_index do |line, index|
  if line =~ DELIMITER then exit end
  
  puts line

  # do we need another line afterwards?
  # NO if:
  # the subsequent or current line is blank -- we never need two
  # the subsequent AND current line is a table
  # the subsequent AND current line is a quote
  
  previous = input[index-1]
  subsequent = input[index+1]
  
  next unless subsequent
  
  unless line.blank? or subsequent.blank? or
    (line.table? and subsequent.table?) or
    (line.quote? and subsequent.quote?)
    puts ""
  end
end