/* Assertion in ISO-2022-JP-3 due to two-character sequence (bug 27256).

   Copyright (C) 2021 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C 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.

   The GNU C 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 the GNU C Library; if not, see

   <https://www.gnu.org/licenses/>.  */

#include <iconv.h>

#include <string.h>

#include <errno.h>

#include <support/check.h>

/* Use an escape sequence to return to the initial state.  */

static void

with_escape_sequence (void)

{

  iconv_t c = iconv_open ("UTF-8", "ISO-2022-JP-3");

  TEST_VERIFY_EXIT (c != (iconv_t) -1);

  char in[] = "\e$(O+D\e(B";

  char *inbuf = in;

  size_t inleft = strlen (in);

  char out[3];                  /* Space for one output character.  */

  char *outbuf;

  size_t outleft;

  outbuf = out;

  outleft = sizeof (out);

  TEST_COMPARE (iconv (c, &inbuf, &inleft, &outbuf, &outleft), (size_t) -1);

  TEST_COMPARE (errno, E2BIG);

  TEST_COMPARE (inleft, 3);

  TEST_COMPARE (inbuf - in, strlen (in) - 3);

  TEST_COMPARE (outleft, sizeof (out) - 2);

  TEST_COMPARE (outbuf - out, 2);

  TEST_COMPARE (out[0] & 0xff, 0xc3);

  TEST_COMPARE (out[1] & 0xff, 0xa6);

  /* Return to the initial shift state, producing the pending

     character.  */

  outbuf = out;

  outleft = sizeof (out);

  TEST_COMPARE (iconv (c, &inbuf, &inleft, &outbuf, &outleft), 0);

  TEST_COMPARE (inleft, 0);

  TEST_COMPARE (inbuf - in, strlen (in));

  TEST_COMPARE (outleft, sizeof (out) - 2);

  TEST_COMPARE (outbuf - out, 2);

  TEST_COMPARE (out[0] & 0xff, 0xcc);

  TEST_COMPARE (out[1] & 0xff, 0x80);

  /* Nothing should be flushed the second time.  */

  outbuf = out;

  outleft = sizeof (out);

  TEST_COMPARE (iconv (c, NULL, 0, &outbuf, &outleft), 0);

  TEST_COMPARE (outleft, sizeof (out));

  TEST_COMPARE (outbuf - out, 0);

  TEST_COMPARE (out[0] & 0xff, 0xcc);

  TEST_COMPARE (out[1] & 0xff, 0x80);

  TEST_COMPARE (iconv_close (c), 0);

}

/* Use an explicit flush to return to the initial state.  */

static void

with_flush (void)

{

  iconv_t c = iconv_open ("UTF-8", "ISO-2022-JP-3");

  TEST_VERIFY_EXIT (c != (iconv_t) -1);

  char in[] = "\e$(O+D";

  char *inbuf = in;

  size_t inleft = strlen (in);

  char out[3];                  /* Space for one output character.  */

  char *outbuf;

  size_t outleft;

  outbuf = out;

  outleft = sizeof (out);

  TEST_COMPARE (iconv (c, &inbuf, &inleft, &outbuf, &outleft), (size_t) -1);

  TEST_COMPARE (errno, E2BIG);

  TEST_COMPARE (inleft, 0);

  TEST_COMPARE (inbuf - in, strlen (in));

  TEST_COMPARE (outleft, sizeof (out) - 2);

  TEST_COMPARE (outbuf - out, 2);

  TEST_COMPARE (out[0] & 0xff, 0xc3);

  TEST_COMPARE (out[1] & 0xff, 0xa6);

  /* Flush the pending character.  */

  outbuf = out;

  outleft = sizeof (out);

  TEST_COMPARE (iconv (c, NULL, 0, &outbuf, &outleft), 0);

  TEST_COMPARE (outleft, sizeof (out) - 2);

  TEST_COMPARE (outbuf - out, 2);

  TEST_COMPARE (out[0] & 0xff, 0xcc);

  TEST_COMPARE (out[1] & 0xff, 0x80);

  /* Nothing should be flushed the second time.  */

  outbuf = out;

  outleft = sizeof (out);

  TEST_COMPARE (iconv (c, NULL, 0, &outbuf, &outleft), 0);

  TEST_COMPARE (outleft, sizeof (out));

  TEST_COMPARE (outbuf - out, 0);

  TEST_COMPARE (out[0] & 0xff, 0xcc);

  TEST_COMPARE (out[1] & 0xff, 0x80);

  TEST_COMPARE (iconv_close (c), 0);

}

static int

do_test (void)

{

  with_escape_sequence ();

  with_flush ();

  return 0;

}

#include <support/test-driver.c>