/*
 * Check: a unit test framework for C
 * Copyright (C) 2001, 2002 Arien Malec
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#include "config.h"

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

#include "check.h"
#include "check_list.h"
#include "check_error.h"
#include "check_impl.h"
#include "check_str.h"

static const char *tr_type_str (TestResult * tr);
static int percent_passed (TestStats * t);

char *
tr_str (TestResult * tr)
{
  const char *exact_msg;
  char *rstr;

  exact_msg = (tr->rtype == CK_ERROR) ? "(after this point) " : "";

  rstr = ck_strdup_printf ("%s:%d:%s:%s:%s:%d: %s%s",
      tr->file, tr->line,
      tr_type_str (tr), tr->tcname, tr->tname, tr->iter, exact_msg, tr->msg);

  return rstr;
}

char *
tr_short_str (TestResult * tr)
{
  const char *exact_msg;
  char *rstr;

  exact_msg = (tr->rtype == CK_ERROR) ? "(after this point) " : "";

  rstr = ck_strdup_printf ("%s:%d: %s%s",
      tr->file, tr->line, exact_msg, tr->msg);

  return rstr;
}

char *
sr_stat_str (SRunner * sr)
{
  char *str;
  TestStats *ts;

  ts = sr->stats;

  str = ck_strdup_printf ("%d%%: Checks: %d, Failures: %d, Errors: %d",
      percent_passed (ts), ts->n_checked, ts->n_failed, ts->n_errors);

  return str;
}

char *
ck_strdup_printf (const char *fmt, ...)
{
  /* Guess we need no more than 100 bytes. */
  int n, size = 100;
  char *p;
  va_list ap;

  p = emalloc (size);

  while (1) {
    /* Try to print in the allocated space. */
    va_start (ap, fmt);
    n = vsnprintf (p, size, fmt, ap);
    va_end (ap);
    /* If that worked, return the string. */
    if (n > -1 && n < size)
      return p;

    /* Else try again with more space. */
    if (n > -1)                 /* C99 conform vsnprintf() */
      size = n + 1;             /* precisely what is needed */
    else                        /* glibc 2.0 */
      size *= 2;                /* twice the old size */

    p = erealloc (p, size);
  }
}

static const char *
tr_type_str (TestResult * tr)
{
  const char *str = NULL;
  if (tr->ctx == CK_CTX_TEST) {
    if (tr->rtype == CK_PASS)
      str = "P";
    else if (tr->rtype == CK_FAILURE)
      str = "F";
    else if (tr->rtype == CK_ERROR)
      str = "E";
  } else
    str = "S";

  return str;
}

static int
percent_passed (TestStats * t)
{
  if (t->n_failed == 0 && t->n_errors == 0)
    return 100;
  else if (t->n_checked == 0)
    return 0;
  else
    return (int) ((float) (t->n_checked - (t->n_failed + t->n_errors)) /
        (float) t->n_checked * 100);
}
