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/* Test that mbsalign works as advertised.
Copyright (C) 2010-2022 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 3 of the License, 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 Pádraig Brady. */
#include <config.h>
#include "mbsalign.h"
#include "macros.h"
#include <stdlib.h>
#include <locale.h>
int
main (void)
{
char dest[4 * 16 + 1];
size_t width, n;
/* Test unibyte truncation. */
width = 4;
n = mbsalign ("t\tés", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
ASSERT (n == 4);
/* Test center alignment. */
width = 4;
n = mbsalign ("es", dest, sizeof dest, &width, MBS_ALIGN_CENTER, 0);
ASSERT (*dest == ' ' && *(dest + n - 1) == ' ');
ASSERT (n == 4);
/* Test center alignment, with no trailing padding. */
width = 4;
n = mbsalign ("es", dest, sizeof dest, &width, MBS_ALIGN_CENTER,
MBA_NO_RIGHT_PAD);
ASSERT (n == 3);
ASSERT (*dest == ' ' && *(dest + n - 1) == 's');
/* Test left alignment, with no trailing padding. (truncate only). */
width = 4;
n = mbsalign ("es", dest, sizeof dest, &width, MBS_ALIGN_LEFT,
MBA_NO_RIGHT_PAD);
ASSERT (n == 2);
ASSERT (*dest == 'e' && *(dest + n - 1) == 's');
/* Test center alignment, with no padding. (truncate only). */
width = 4;
n = mbsalign ("es", dest, sizeof dest, &width, MBS_ALIGN_CENTER,
MBA_NO_LEFT_PAD | MBA_NO_RIGHT_PAD);
ASSERT (n == 2);
ASSERT (*dest == 'e' && *(dest + n - 1) == 's');
/* Test center alignment, with no left padding. (may be useful for RTL?) */
width = 4;
n = mbsalign ("es", dest, sizeof dest, &width, MBS_ALIGN_CENTER,
MBA_NO_LEFT_PAD);
ASSERT (n == 3);
ASSERT (*dest == 'e' && *(dest + n - 1) == ' ');
if (setlocale (LC_ALL, "en_US.UTF8"))
{
/* Check invalid input is flagged. */
width = 4;
n = mbsalign ("t\xe1\xe2s", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
ASSERT (n == (size_t) -1);
/* Check invalid input is treated as unibyte */
width = 4;
n = mbsalign ("t\xe1\xe2s", dest, sizeof dest, &width,
MBS_ALIGN_LEFT, MBA_UNIBYTE_FALLBACK);
ASSERT (n == 4);
/* Test multibyte center alignment. */
width = 4;
n = mbsalign ("és", dest, sizeof dest, &width, MBS_ALIGN_CENTER, 0);
ASSERT (n == 5);
ASSERT (*dest == ' ' && *(dest + n - 1) == ' ');
/* Test multibyte left alignment. */
width = 4;
n = mbsalign ("és", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
ASSERT (n == 5);
ASSERT (*(dest + n - 1) == ' ' && *(dest + n - 2) == ' ');
/* Test multibyte right alignment. */
width = 4;
n = mbsalign ("és", dest, sizeof dest, &width, MBS_ALIGN_RIGHT, 0);
ASSERT (n == 5);
ASSERT (*(dest) == ' ' && *(dest + 1) == ' ');
/* multibyte multicell truncation. */
width = 4; /* cells */
n = mbsalign ("日月火水", dest, sizeof dest, &width,
MBS_ALIGN_LEFT, 0);
ASSERT (n == 6); /* 2 characters */
/* multibyte unicell truncation. */
width = 3; /* cells */
n = mbsalign ("¹²³⁴", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
ASSERT (n == 6); /* 3 characters */
/* Check independence from dest buffer. */
width = 4; /* cells */
n = mbsalign ("¹²³⁴", dest, 0, &width, MBS_ALIGN_LEFT, 0);
ASSERT (n == 9); /* 4 characters */
/* Check that width is updated with cells required before padding. */
width = 4; /* cells */
n = mbsalign ("¹²³", dest, 0, &width, MBS_ALIGN_LEFT, 0);
ASSERT (width == 3);
/* Test case where output is larger than input
(as tab converted to multi byte replacement char). */
width = 4;
n = mbsalign ("t\tés" /* 6 including NUL */ , dest, sizeof dest,
&width, MBS_ALIGN_LEFT, 0);
ASSERT (n == 7);
/* Test forced unibyte truncation. */
width = 4;
n = mbsalign ("t\tés", dest, sizeof dest, &width, MBS_ALIGN_LEFT,
MBA_UNIBYTE_ONLY);
ASSERT (n == 4);
}
return 0;
}
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