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-- use Latexmk in first LaTeX call
-- only in the first call, because we don't need to execute biber, etc. in the subsequent
-- LaTeX calls, these are only for resolving the cross-references
local M = {}
function M.modify_build(make)
local used = false
local first
local build_seq = make.build_seq
-- find first htlatex call in the build sequence
for pos,v in ipairs(build_seq) do
if v.name == "htlatex" and not first then
first = pos
end
end
-- we need to save contents of the .tmp file, to prevent extra executions from latexmk
-- tex4ht command overwrites content that was set by LaTeX with it's own stuff
local tmp_file
make:add("save_tmp", function(par)
local f = io.open(mkutils.file_in_builddir(par.input .. ".tmp", par), "r")
if f then
tmp_file = f:read("*all")
f:close()
end
return 0
end)
make:add("load_tmp", function(par)
if tmp_file then
local f = io.open(mkutils.file_in_builddir(par.input .. ".tmp", par), "w")
if f then
f:write(tmp_file)
end
end
return 0
end)
-- if htlatex was found
if first then
-- handle tmp file
make:load_tmp {}
make:save_tmp {}
-- add dummy latexmk call to the build sequence
make:latexmk {}
-- replace name, command and type in the first htlatex
-- call with values from the dummy latexmk call
local replaced = build_seq[first]
local latexmk = build_seq[#build_seq]
replaced.name = latexmk.name
replaced.command = latexmk.command
replaced.type = latexmk.type
-- remove the dummy latexmk
table.remove(build_seq)
end
-- remove htlatex calls from the build sequence, they are unnecessary
local new_build_seq = {}
for pos, v in ipairs(build_seq) do
if v.name ~= "htlatex" and v.name ~= "tex4ht" then
table.insert(new_build_seq, v)
elseif v.name == "tex4ht" then
-- insert save_tmp before tex4ht
table.insert(new_build_seq, build_seq[#build_seq])
-- remove save_tmp from the end
table.remove(build_seq)
-- and now insert tex4ht
table.insert(new_build_seq, v)
end
end
make.build_seq = new_build_seq
return make
end
return M
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