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c872a1d8a5
* gl/lib/mbsalign.c (mbsalign): Ensure the temporary destination buffer is big enough, as it may need to be bigger than the source buffer in the presence of single byte non printable chars. * gl/tests/test-mbsalign.c (main): Add a test to trigger the issue.
101 lines
3.4 KiB
C
101 lines
3.4 KiB
C
/* Test that mbsalign works as advertised.
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Copyright (C) 2010 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Written by Pádraig Brady. */
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#include <config.h>
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#include "mbsalign.h"
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#include "macros.h"
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#include <stdlib.h>
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#include <locale.h>
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int
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main (void)
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{
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char dest[4 * 16 + 1];
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size_t width, n;
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/* Test unibyte truncation. */
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width = 4;
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n = mbsalign ("t\tés", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
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ASSERT (n == 4);
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/* Test center alignment. */
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width = 4;
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n = mbsalign ("es", dest, sizeof dest, &width, MBS_ALIGN_CENTER, 0);
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ASSERT (*dest == ' ' && *(dest + n - 1) == ' ');
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if (setlocale (LC_ALL, "en_US.UTF8"))
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{
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/* Check invalid input is flagged. */
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width = 4;
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n = mbsalign ("t\xe1\xe2s", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
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ASSERT (n == (size_t) -1);
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/* Check invalid input is treated as unibyte */
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width = 4;
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n = mbsalign ("t\xe1\xe2s", dest, sizeof dest, &width,
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MBS_ALIGN_LEFT, MBA_UNIBYTE_FALLBACK);
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ASSERT (n == 4);
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/* Test multibyte center alignment. */
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width = 4;
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n = mbsalign ("és", dest, sizeof dest, &width, MBS_ALIGN_CENTER, 0);
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ASSERT (*dest == ' ' && *(dest + n - 1) == ' ');
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/* Test multibyte left alignment. */
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width = 4;
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n = mbsalign ("és", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
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ASSERT (*(dest + n - 1) == ' ' && *(dest + n - 2) == ' ');
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/* Test multibyte right alignment. */
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width = 4;
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n = mbsalign ("és", dest, sizeof dest, &width, MBS_ALIGN_RIGHT, 0);
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ASSERT (*(dest) == ' ' && *(dest + 1) == ' ');
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/* multibyte multicell truncation. */
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width = 4; /* cells */
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n = mbsalign ("日月火水", dest, sizeof dest, &width,
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MBS_ALIGN_LEFT, 0);
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ASSERT (n == 6); /* 2 characters */
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/* multibyte unicell truncation. */
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width = 3; /* cells */
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n = mbsalign ("¹²³⁴", dest, sizeof dest, &width, MBS_ALIGN_LEFT, 0);
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ASSERT (n == 6); /* 3 characters */
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/* Check independence from dest buffer. */
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width = 4; /* cells */
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n = mbsalign ("¹²³⁴", dest, 0, &width, MBS_ALIGN_LEFT, 0);
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ASSERT (n == 9); /* 4 characters */
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/* Check that width is updated with cells required before padding. */
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width = 4; /* cells */
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n = mbsalign ("¹²³", dest, 0, &width, MBS_ALIGN_LEFT, 0);
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ASSERT (width == 3);
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/* Test case where output is larger than input
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(as tab converted to multi byte replacement char). */
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width = 4;
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n = mbsalign ("t\tés" /* 6 including NUL */ , dest, sizeof dest,
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&width, MBS_ALIGN_LEFT, 0);
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ASSERT (n == 7);
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}
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return 0;
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}
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