#!/bin/awk -f
#!/opt/busybox/awk -f

function macro(call, LOCAL, line, files, n, exec) {
  "cd " ENVIRON["MD_MACROS"] "; printf '%s/' *" |getline line;
  split(line, files, "/");
  for (n in files) { files[files[n]] = ""; delete files[n]; }
  delete files[""];

  split(call, exec);

  if (exec[1] in files) {
    RS=""; ORS=""; line="";
    # TODO: proper shell-exec function with argument array
    "printf '%s' " line " | " ENVIRON["MD_MACROS"] "/" call | getline line;
    return line;
  } else {
    return HTML("<<" call ">>");
  }
}

BEGIN {
  if (ENVIRON["MD_MACROS"]) { AllowMacros = "true"; }
}