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/*
* Copyright © 2025 Luca Bacci
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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, see <http://www.gnu.org/licenses/>.
*
* Author: Luca Bacci <luca.bacci@outlook.com>
*/
#include "glib.h"
#include "gprintf.h"
#include <stdio.h>
#ifdef _WIN32
#include <windows.h>
#include <io.h>
#include <fcntl.h>
#endif
static void
test_print_console (void)
{
#ifdef _WIN32
UINT previous_codepage = CP_UTF8;
const DWORD access_rights = GENERIC_READ | GENERIC_WRITE;
const DWORD share_mode = FILE_SHARE_READ | FILE_SHARE_WRITE;
const DWORD flags = CONSOLE_TEXTMODE_BUFFER;
HANDLE handle;
int fd;
FILE *stream;
const char *utf8;
wchar_t *utf16;
DWORD length_cells;
wchar_t *aux;
DWORD aux_read;
BOOL ret;
/* A process can be attached to at most one console. If the calling process is
* already attached to a console, the error code returned is ERROR_ACCESS_DENIED
*/
g_assert_true (AllocConsole () || GetLastError () == ERROR_ACCESS_DENIED);
/* Set a limited codepage */
previous_codepage = GetConsoleOutputCP ();
g_assert_true (IsValidCodePage (1252));
SetConsoleOutputCP (1252);
handle = CreateConsoleScreenBuffer (access_rights, share_mode, NULL, flags, NULL);
g_assert_true (handle != INVALID_HANDLE_VALUE);
fd = _open_osfhandle ((intptr_t)handle, _O_BINARY);
g_assert_cmpint (fd, >=, 0);
stream = _fdopen (fd, "w");
g_assert_nonnull (stream);
/* Use only characters in the Basic Multilingual Plane (BMP).
* We can write any UTF-8 string, but the read-back API used
* in this test only supports UCS2 */
utf8 = "\u00E0" /* Latin Small Letter A with Grave */
"\u03B1" /* Greek Small Letter Alpha */
"\u3041"; /* Hiragana Letter Small A */
g_fprintf (stream, "%s", utf8);
fflush (stream);
g_assert_false (ferror (stream));
utf16 = g_utf8_to_utf16 (utf8, -1, NULL, NULL, NULL);
g_assert_nonnull (utf16);
/* CJK characters usually are "wide", they take the space of
* two cells (see wcwidth()). Probably newer terminals use
* one cell per grapheme cluster, but let's just multiply
* by two to account for wide characters */
length_cells = (DWORD)wcslen (utf16) * 2 + 1;
aux = g_new (wchar_t, length_cells);
ret = ReadConsoleOutputCharacter (handle,
aux,
length_cells,
(COORD){0, 0},
&aux_read);
g_assert_true (ret);
aux[aux_read] = L'\0';
if (wcsncmp (aux, utf16, wcslen (utf16)) != 0)
{
char *aux_utf8 = g_utf16_to_utf8 (aux, aux_read, NULL, NULL, NULL);
g_test_fail_printf ("string `%s' was written as `%s'", utf8, aux_utf8);
g_free (aux_utf8);
}
g_clear_pointer (&aux, g_free);
g_clear_pointer (&utf16, g_free);
/* Closes all of stream, fd, and handle */
g_assert_cmpint (fclose (stream), !=, EOF);
SetConsoleOutputCP (previous_codepage);
#else
g_test_skip ("Testing console output only supported on Windows");
#endif
}
int
main (int argc,
char *argv[])
{
g_test_init (&argc, &argv, NULL);
g_test_add_func ("/print-console", test_print_console);
return g_test_run ();
}
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