test-sf-istream.c

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Hash : 5656e32e
Author :
Date : 2025-05-10T03:16:52

string-desc: Distinguish writable strings from read-only strings.

* lib/string-desc.h (HAVE_STATEMENT_EXPRESSIONS): New macro.
(rw_string_desc_t): New type.
(string_desc_t) [HAVE_STATEMENT_EXPRESSIONS]: Change field _data from
'char *' to 'const char *'.
(sd_readonly, sd_readwrite): New inline functions.
(sd_length): Define through a macro with _Generic.
(sd_char_at): Define through a macro and an inline function.
(sd_data, sd_is_empty): Define through a macro with _Generic.
(sd_equals, sd_startswith, sd_endswith, sd_cmp, sd_c_casecmp, sd_index,
sd_last_index, sd_contains): Define through a macro.
(sd_new_addr): Define through a macro with _Generic.
(sd_substring, sd_write, sd_fwrite): Define through a macro.
(sd_new, sd_new_filled): Change parameter type.
(sd_copy): Define through a macro.
(sd_concat): Change parameter type.
(sd_c): Define through a macro.
(sd_set_char_at, sd_fill): Change parameter type.
(sd_overwrite): Define through a macro.
(sd_free): Change parameter type.
* lib/string-desc.c (_sd_equals): Renamed from sd_equals. Take scalar
parameters.
(_sd_startswith): Renamed from sd_startswith. Take scalar parameters.
(_sd_endswith): Renamed from sd_endswith. Take scalar parameters.
(_sd_cmp): Renamed from sd_cmp. Take scalar parameters.
(_sd_c_casecmp): Renamed from sd_c_casecmp. Take scalar parameters.
(_sd_index): Renamed from sd_index. Take scalar parameters.
(_sd_last_index): Renamed from sd_last_index. Take scalar parameters.
(_sd_new_addr, _rwsd_new_addr): Renamed from sd_new_addr.
(sd_substring): Remove function.
(_sd_write): Renamed from sd_write. Take scalar parameters.
(_sd_fwrite): Renamed from sd_fwrite. Take scalar parameters.
(sd_new, sd_new_filled): Change parameter type.
(_sd_copy): Renamed from sd_copy. Change parameter type. Take scalar
parameters.
(sd_concat): Change parameter type.
(_sd_c): Renamed from sd_c. Take scalar parameters.
(sd_set_char_at, sd_fill): Change parameter type.
(_sd_overwrite): Renamed from sd_overwrite. Change parameter type. Take
scalar parameters.
(sd_free): Change parameter type.
* lib/string-desc-contains.c (_sd_contains): Renamed from sd_contains.
Take scalar parameters.
* lib/xstring-desc.h (xsd_new, xsd_new_filled, xsd_copy, xsd_concat):
Change return type to rw_string_desc_t.
(xsd_c): Define through a macro.
* lib/xstring-desc.c (xsd_concat): Change return type to
rw_string_desc_t.
* doc/string-desc.texi (Handling strings with NUL characters): Mention
rw_string_desc_t and the sd_readonly() function.
* lib/string-buffer.h (sb_dupfree, sb_xdupfree): Change return type to
rw_string_desc_t.
* lib/string-buffer.c (sb_contents): Add a cast to 'const char *'.
(sb_dupfree): Change return type to rw_string_desc_t.
* lib/xstring-buffer.c (sb_xdupfree): Change return type to
rw_string_desc_t.
* lib/string-buffer-reversed.h (sbr_dupfree, sbr_xdupfree): Change
return type to rw_string_desc_t.
* lib/string-buffer-reversed.c (sbr_contents): Add a cast to
'const char *'.
(sbr_dupfree): Change return type to rw_string_desc_t.
* lib/xstring-buffer-reversed.c (sbr_xdupfree): Change return type to
rw_string_desc_t.
* tests/test-string-desc.c (main): Use type rw_string_desc_t as
appropriate.
* tests/test-xstring-desc.c (main): Likewise.
* tests/test-sf-istream.c (main): Remove cast in sd_new_addr argument.
* tests/test-sfl-istream.c (main): Likewise.
* NEWS: Mention the change.

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tests/test-sf-istream.c

/* Test of string or file based input stream.
   Copyright (C) 2024-2025 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, see <https://www.gnu.org/licenses/>.  */

/* Written by Bruno Haible <bruno@clisp.org>, 2024.  */

#include <config.h>

/* Specification.  */
#include "sf-istream.h"

#include <unistd.h>

#include "macros.h"

#define CONTENTS_LEN 7
#define CONTENTS "Hello\377\n"

static void
test_open_stream (sf_istream_t *stream)
{
  int c;

  c = sf_getc (stream);
  ASSERT (c == 'H');
  c = sf_getc (stream);
  ASSERT (c == 'e');
  c = sf_getc (stream);
  ASSERT (c == 'l');
  c = sf_getc (stream);
  ASSERT (c == 'l');
  c = sf_getc (stream);
  ASSERT (c == 'o');
  sf_ungetc (stream, c);
  c = sf_getc (stream);
  ASSERT (c == 'o');
  c = sf_getc (stream);
  ASSERT (c == 0xff);
  sf_ungetc (stream, c);
  c = sf_getc (stream);
  ASSERT (c == 0xff);
  c = sf_getc (stream);
  ASSERT (c == '\n');
  c = sf_getc (stream);
  ASSERT (c == EOF);
  c = sf_getc (stream);
  ASSERT (c == EOF);
  sf_ungetc (stream, c);
  c = sf_getc (stream);
  ASSERT (c == EOF);
  ASSERT (!sf_ferror (stream));
}

int
main ()
{
  char const contents[CONTENTS_LEN] _GL_ATTRIBUTE_NONSTRING = CONTENTS;

  /* Test reading from a file.  */
  {
    const char *filename = "test-sf-istream.tmp";
    unlink (filename);
    {
      FILE *fp = fopen (filename, "wb");
      ASSERT (fwrite (contents, 1, CONTENTS_LEN, fp) == CONTENTS_LEN);
      ASSERT (fclose (fp) == 0);
    }
    {
      FILE *fp = fopen (filename, "rb");
      sf_istream_t stream;
      sf_istream_init_from_file (&stream, fp);
      test_open_stream (&stream);
      sf_free (&stream);
    }
    unlink (filename);
  }

  /* Test reading from a string in memory.  */
  {
    sf_istream_t stream;
    sf_istream_init_from_string_desc (&stream,
                                      sd_new_addr (CONTENTS_LEN, contents));
    test_open_stream (&stream);
    sf_free (&stream);
  }

  /* Test reading from a NUL-terminated string in memory.  */
  {
    sf_istream_t stream;
    sf_istream_init_from_string (&stream, CONTENTS);
    test_open_stream (&stream);
    sf_free (&stream);
  }

  return 0;
}

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kc3-lang/gnulib/tests/test-sf-istream.c

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tests/test-sf-istream.c