#include "libft.h"
#include "test_utils.h"

_S_CRASH (ft_split_null, ft_split (NULL, ' '))

static void
_s_free_split (char **arr)
{
  size_t i;

  if (!arr)
    return;
  i = 0;
  while (arr[i])
    free (arr[i++]);
  free (arr);
}

static size_t
_s_arr_len (char **arr)
{
  size_t n;

  n = 0;
  while (arr[n])
    n++;
  return (n);
}

static void
_s_test_split (void)
{
  int i;
  char label[128];

  _s_section ("ft_split");

  /* NULL crashes */
  _s_check ("NULL crashes", _s_crashes (_s_crash_ft_split_null));

  /* basic split */
  {
    char **arr = ft_split ("hello world foo", ' ');
    _s_check ("basic count", arr && _s_arr_len (arr) == 3);
    _s_check ("basic [0]", arr && strcmp (arr[0], "hello") == 0);
    _s_check ("basic [1]", arr && strcmp (arr[1], "world") == 0);
    _s_check ("basic [2]", arr && strcmp (arr[2], "foo") == 0);
    _s_check ("basic NULL-term", arr && arr[3] == NULL);
    _s_free_split (arr);
  }

  /* leading delimiters */
  {
    char **arr = ft_split ("  hello", ' ');
    _s_check ("leading delim count", arr && _s_arr_len (arr) == 1);
    _s_check ("leading delim [0]", arr && strcmp (arr[0], "hello") == 0);
    _s_free_split (arr);
  }

  /* trailing delimiters */
  {
    char **arr = ft_split ("hello  ", ' ');
    _s_check ("trailing delim count", arr && _s_arr_len (arr) == 1);
    _s_check ("trailing delim [0]", arr && strcmp (arr[0], "hello") == 0);
    _s_free_split (arr);
  }

  /* consecutive delimiters */
  {
    char **arr = ft_split ("a,,b,,c", ',');
    _s_check ("consec count", arr && _s_arr_len (arr) == 3);
    _s_check ("consec [0]", arr && strcmp (arr[0], "a") == 0);
    _s_check ("consec [1]", arr && strcmp (arr[1], "b") == 0);
    _s_check ("consec [2]", arr && strcmp (arr[2], "c") == 0);
    _s_free_split (arr);
  }

  /* no delimiter in string */
  {
    char **arr = ft_split ("hello", ' ');
    _s_check ("no delim count", arr && _s_arr_len (arr) == 1);
    _s_check ("no delim [0]", arr && strcmp (arr[0], "hello") == 0);
    _s_free_split (arr);
  }

  /* empty string */
  {
    char **arr = ft_split ("", ' ');
    _s_check ("empty count", arr && _s_arr_len (arr) == 0);
    _s_check ("empty NULL-term", arr && arr[0] == NULL);
    _s_free_split (arr);
  }

  /* string is only delimiters */
  {
    char **arr = ft_split ("   ", ' ');
    _s_check ("only delims count", arr && _s_arr_len (arr) == 0);
    _s_check ("only delims NULL-term", arr && arr[0] == NULL);
    _s_free_split (arr);
  }

  /* single character string, is delimiter */
  {
    char **arr = ft_split (",", ',');
    _s_check ("single delim count", arr && _s_arr_len (arr) == 0);
    _s_free_split (arr);
  }

  /* single character string, not delimiter */
  {
    char **arr = ft_split ("a", ',');
    _s_check ("single non-delim count", arr && _s_arr_len (arr) == 1);
    _s_check ("single non-delim [0]", arr && strcmp (arr[0], "a") == 0);
    _s_free_split (arr);
  }

  /* delimiter '\0' — whole string is one word */
  {
    char **arr = ft_split ("hello", '\0');
    _s_check ("nul delim count", arr && _s_arr_len (arr) == 1);
    _s_check ("nul delim [0]", arr && strcmp (arr[0], "hello") == 0);
    _s_free_split (arr);
  }

  /* each word is independently allocated */
  {
    char **arr = ft_split ("a b c", ' ');
    _s_check ("independent ptrs", arr && arr[0] != arr[1] && arr[1] != arr[2]);
    _s_free_split (arr);
  }

  /* randomized: build string from words, split, verify */
  for (i = 0; i < _S_RAND_ITERS; i++)
    {
      int nwords = rand () % 10 + 1;
      int pads = rand () % 5;
      char **words = malloc (nwords * sizeof (char *));
      char *src;
      char **arr;
      size_t total;
      int j, k;
      int ok;

      if (!words)
        continue;

      /* generate random words (letters only) */
      total = 0;
      ok = 1;
      for (j = 0; j < nwords; j++)
        {
          int wlen = rand () % 20 + 1;
          words[j] = malloc (wlen + 1);
          if (!words[j])
            {
              ok = 0;
              break;
            }
          for (k = 0; k < wlen; k++)
            words[j][k] = 'A' + rand () % 26;
          words[j][wlen] = '\0';
          total += wlen;
        }
      if (!ok)
        {
          for (k = 0; k < j; k++)
            free (words[k]);
          free (words);
          continue;
        }

      /* build: pads + word + delimiters + ... + pads */
      total += (nwords - 1) + 2 * pads;
      src = malloc (total + 1);
      if (!src)
        {
          for (j = 0; j < nwords; j++)
            free (words[j]);
          free (words);
          continue;
        }

      k = 0;
      for (j = 0; j < pads; j++)
        src[k++] = ',';
      for (j = 0; j < nwords; j++)
        {
          size_t wlen = strlen (words[j]);
          memcpy (src + k, words[j], wlen);
          k += wlen;
          if (j < nwords - 1)
            src[k++] = ',';
        }
      for (j = 0; j < pads; j++)
        src[k++] = ',';
      src[k] = '\0';

      arr = ft_split (sr<style>pre { line-height: 125%; }
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<span class="k">using</span><span class="w"> </span><span class="nn">System.Collections.Generic</span><span class="p">;</span>
<span class="k">using</span><span class="w"> </span><span class="nn">System.Linq</span><span class="p">;</span>
<span class="k">using</span><span class="w"> </span><span class="nn">System.Text</span><span class="p">;</span>
<span class="k">using</span><span class="w"> </span><span class="nn">System.Threading.Tasks</span><span class="p">;</span>

<span class="k">namespace</span><span class="w"> </span><span class="nn">Tango.Scripting.IDE.Notifications</span>
<span class="p">{</span>
<span class="w">    </span><span class="k">public</span><span class="w"> </span><span class="k">class</span><span class="w"> </span><span class="nc">ProgressNotificationHandler</span><span class="w"> </span><span class="p">:</span><span class="w"> </span><span class="n">IDisposable</span>
<span class="w">    </span><span class="p">{</span>
<span class="w">        </span><span class="k">private</span><span class="w"> </span><span class="n">Action</span><span class="w"> </span><span class="n">_disposeAction</span><span class="p">;</span>

<span class="w">        </span><span class="k">public</span><span class="w"> </span><span class="nf">ProgressNotificationHandler</span><span class="p">(</span><span class="n">Action</span><span class="w"> </span><span class="n">disposeAction</span><span class="p">)</span>
<span class="w">        </span><span class="p">{</span>
<span class="w">            </span><span class="n">_disposeAction</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">disposeAction</span><span class="p">;</span>
<span class="w">        </span><span class="p">}</span>

<span class="w">        </span><span class="k">public</span><span class="w"> </span><span class="k">void</span><span class="w"> </span><span class="nf">Dispose</span><span class="p">()</span>
<span class="w">        </span><span class="p">{</span>
<span class="w">            </span><span class="n">_disposeAction</span><span class="o">?.</span><span class="n">Invoke</span><span class="p">();</span>
<span class="w">        </span><span class="p">}</span>
<span class="w">    </span><span class="p">}</span>
<span class="p">}</span>
</pre></div>
</code></pre></td></tr></table>
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