MWWRender.ml

let cmd_dvips tmpprefix = "dvips -R -E -q \"" ^ tmpprefix ^ ".dvi\" -f >\"" ^tmpprefix^".ps\" " let cmd_latex tmpprefix = "latex -quiet \"" ^ tmpprefix ^ ".tex\" >\""^tmpprefix^".tmp\" " let cmd_convert tmpprefix finalpath = "convert -quality 100 -density 120 \"ps:"^tmpprefix^".ps\" \""^finalpath^"\"" let cmd_dvipng tmpprefix finalpath = "dvipng -gamma 1.5 -D 120 -T tight --strict \"" ^ tmpprefix ^ ".dvi\" -o \"" ^finalpath^"\" >\""^tmpprefix^".tmp2\" " exception ExternalCommandFailure of string let render tmppath finalpath outtex md5 = let tmpprefix0 = (string_of_int (Unix.getpid ))^"_"^md5 in    let tmpprefix = (tmppath^"\\"^tmpprefix0) in     let unlink_all  = begin Sys.remove (tmpprefix ^ ".dvi"); Sys.remove (tmpprefix ^ ".aux"); Sys.remove (tmpprefix ^ ".log"); Sys.remove (tmpprefix ^ ".tex"); Sys.remove (tmpprefix ^ ".ps"); Sys.remove (tmpprefix ^ ".tmp"); Sys.remove (tmpprefix ^ ".tmp2"); Sys.remove (tmpprefix ^ ".tmp3"); end in    let f = (Util.open_out_unless_exists (tmpprefix ^ ".tex")) in       begin output_string f (Texutil.get_preface ); output_string f outtex; output_string f (Texutil.get_footer ); close_out f;         if Util.run_in_other_directory tmppath (cmd_latex tmpprefix0) != 0 then (unlink_all ; raise (ExternalCommandFailure "latex")) else if (Sys.command (cmd_dvipng tmpprefix (finalpath^"\\"^md5^".png")) != 0) then (if (Sys.command (cmd_dvips tmpprefix) != 0)         then (unlink_all ; raise (ExternalCommandFailure "dvips"))          else if (Sys.command (cmd_convert tmpprefix (finalpath^"\\"^md5^".png")) != 0)          then (unlink_all ; raise (ExternalCommandFailure "convert"))          else unlink_all ) else unlink_all end