#include "config.h"
#include "error.h"

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char *program_name;

static void
put_args(FILE *fp, int err, const char *type, const char *fmt, va_list args)
{
  fflush(stdout);
  fprintf(fp, "%s: ", program_name ? program_name : PACKAGE);
  if (type != NULL)
    fprintf(fp, "%s: ", type);
  vfprintf(fp, fmt, args);
  if (err)
    fprintf(fp, ": %s", strerror(err));
  fprintf(fp, "\n");
}

void
warn(int err, const char *fmt, ...)
{
  va_list args;

  va_start(args, fmt);
  put_args(stderr, err, NULL, fmt, args);
  va_end(args);
}

int fail_longjmp;
jmp_buf fail_jmp_buf;

void
fail(int err, const char *fmt, ...)
{
  va_list args;

  va_start(args, fmt);
  put_args(stderr, err, "FAIL", fmt, args);
  va_end(args);

  if (fail_longjmp)
    longjmp(fail_jmp_buf, fail_longjmp);
  exit(EXIT_FAILURE);
}