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local log = logging.new "htlatex"
local error_logparser = require("make4ht-errorlogparser")
local Make = Make or {}
-- this function reads the LaTeX log file and tries to detect fatal errors in the compilation
local function testlogfile(par)
local logfile = par.input .. ".log"
local f = io.open(logfile,"r")
if not f then
log:warning("Make4ht: cannot open log file "..logfile)
return 1
end
local content = f:read("*a")
-- test only the end of the log file, no need to run search functions on everything
local text = content:sub(-1256)
f:close()
-- parse log file for all errors in non-interactive modes
if par.interaction~="errorstopmode" then
-- the error log parsing can be slow, so detect errors first
if content:match("\n!") then
local errors, chunks = error_logparser.parse(content)
if #errors > 0 then
log:error("Compilation errors in the htlatex run")
log:error("Filename", "Line", "Message")
for _, err in ipairs(errors) do
log:error(err.filename or "?", err.line or "?", err.error)
end
end
end
end
-- test for fatal errors
if text:match("No pages of output") or text:match("TeX capacity exceeded, sorry") or text:match("That makes 100 errors") or text:match("Emergency stop") then return 1 end
return 0
end
-- Make this function available in the build files
Make.testlogfile = testlogfile
--env.Make:add("htlatex", "${htlatex} ${latex_par} '\\\makeatletter\\def\\HCode{\\futurelet\\HCode\\HChar}\\def\\HChar{\\ifx\"\\HCode\\def\\HCode\"##1\"{\\Link##1}\\expandafter\\HCode\\else\\expandafter\\Link\\fi}\\def\\Link#1.a.b.c.{\\g@addto@macro\\@documentclasshook{\\RequirePackage[#1,html]{tex4ht}\\let\\HCode\\documentstyle\\def\\documentstyle{\\let\\documentstyle\\HCode\\expandafter\\def\\csname tex4ht\\endcsname{#1,html}\\def\\HCode####1{\\documentstyle[tex4ht,}\\@ifnextchar[{\\HCode}{\\documentstyle[tex4ht]}}}\\makeatother\\HCode '${config}${tex4ht_sty_par}'.a.b.c.\\input ' ${input}")
-- template for calling LaTeX with tex4ht loaded
Make.latex_command = "${htlatex} --interaction=${interaction} ${latex_par} '\\makeatletter"..
"\\def\\HCode{\\futurelet\\HCode\\HChar}\\def\\HChar{\\ifx\"\\HCode"..
"\\def\\HCode\"##1\"{\\Link##1}\\expandafter\\HCode\\else"..
"\\expandafter\\Link\\fi}\\def\\Link#1.a.b.c.{\\AddToHook"..
"{class/before}{\\RequirePackage[#1,html]{tex4ht}${packages}}"..
"\\let\\HCode\\documentstyle\\def\\documentstyle{\\let\\documentstyle"..
"\\HCode\\expandafter\\def\\csname tex4ht\\endcsname{#1,html}\\def"..
"\\HCode####1{\\documentstyle[tex4ht,}\\@ifnextchar[{\\HCode}{"..
"\\documentstyle[tex4ht]}}}\\makeatother\\HCode ${tex4ht_sty_par}.a.b.c."..
"\\input \"\\detokenize{${tex_file}}\"'"
Make.plain_command = '${htlatex} --interaction=${interaction} ${latex_par}' ..
"'\\def\\Link#1.a.b.c.{\\expandafter\\def\\csname tex4ht\\endcsname{\\expandafter\\def\\csname tex4ht\\endcsname{#1,html}\\input tex4ht.sty }}" ..
"\\def\\HCode{\\futurelet\\HCode\\HChar}\\def\\HChar{\\ifx\"\\HCode\\def\\HCode\"##1\"{\\Link##1}\\expandafter\\HCode\\else\\expandafter\\Link\\fi}" ..
"\\HCode ${tex4ht_sty_par}.a.b.c.\\input \"\\detokenize{${tex_file}}\"'"
local m = {}
function m.htlatex(par, latex_command)
-- latex_command can be also plain_command for Plain TeX
local command = latex_command or Make.latex_command
local devnull = " > /dev/null 2>&1"
if os.type == "windows" then
command = command:gsub("'",'')
devnull = " > nul 2>&1"
end
par.interaction = par.interaction or "batchmode"
-- remove all terminal output from the batchmode
if par.interaction == "batchmode" then
command = command .. devnull
end
command = command % par
log:info("LaTeX call: "..command)
os.execute(command)
return Make.testlogfile(par)
end
function m.httex(par)
local newpar = {}
for k,v in pairs(par) do newpar[k] = v end
-- change executable name from *latex to *tex
newpar.htlatex = newpar.htlatex:gsub("latex", "tex")
-- plain tex command doesn't support etex extensions
-- which are necessary for TeX4ht. just quick hack to fix this
if newpar.htlatex == "tex" then newpar.htlatex = "etex" end
return m.htlatex(newpar, Make.plain_command)
end
return m
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