#include "opt.h"

int opt_toggle(int val, const char *opt)
{
  if (!opt)
  { val = !val; }
  else if (!strcasecmp("on", optarg))    val = 1;
  else if (!strcasecmp("true", optarg))  val = 1;
  else if (!strcasecmp("yes", optarg))   val = 1;
  else if (!strcmp("1", optarg))         val = 1;
  else if (!strcasecmp("false", optarg)) val = 0;
  else if (!strcasecmp("off", optarg))   val = 0;
  else if (!strcasecmp("no", optarg))    val = 0;
  else if (!strcmp("0", optarg))         val = 0;
  else
  { val = !val; } /* error ? */

  return (val);
}

/* get program name ... but ignore "lt-" libtool prefix */
const char *opt_program_name(const char *argv0, const char *def)
{
  if (argv0)
  {
    if ((def = strrchr(argv0, '/')))
      ++def;
    else
      def = argv0;

    /* hack for libtool */
    if ((strlen(def) > strlen("lt-")) && !memcmp("lt-", def, strlen("lt-")))
      def += 3;
  }
  
  return (def);
}

const char *opt_def_toggle(int val)
{
  if (val)
    return (" (default: on)");
  else
    return (" (default: off)");
}