--[[
************************************************************************
* Copyright 2021 by Bastien Dumont (bastien.dumont@posteo.net)
*
* This file is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this file.  If not, see <https://www.gnu.org/licenses/>.
*
************************************************************************
]]--

local function isPatrologiaReference(first, second, third, last)
   return first.t == 'Emph'
      and (
         (
            #first.content == 3
            and string.match(first.content[1].text, '^Patrologi[ea]$')
            and first.content[2].t == 'Space'
            and first.content[3].t == 'Str'
            and string.match('|grecque|Graeca|latine|Latina|orientale|orientalis|', '|' .. first.content[3].text .. '|')
         )
         or
         (
            #first.content == 1
            and first.content[1].t == 'Str'
            and string.match('|PG|PL|PO|', '|' .. first.content[1].text .. '|')
         )
      )
      and (second.t == 'Str'
           and string.match(second.c, '^ [0-9]+,$')
           and third.t == 'Space'
           and last.t == 'Str'
           and string.match(last.c, '^col. $'))
end

function Inlines (inlines)
   for i = #inlines, 6, -1 do
      if isPatrologiaReference(inlines[i-3], inlines[i-2], inlines[i-1], inlines[i]) then
         inlines:remove(i)
      end
   end
   return inlines
end