diff options
Diffstat (limited to 'stdio-common')
| -rw-r--r-- | stdio-common/Makefile | 1 | ||||
| -rw-r--r-- | stdio-common/tst-vfprintf-mbs-prec.c | 543 |
2 files changed, 544 insertions, 0 deletions
diff --git a/stdio-common/Makefile b/stdio-common/Makefile index 63c9ebdd81..309d83ec01 100644 --- a/stdio-common/Makefile +++ b/stdio-common/Makefile @@ -60,6 +60,7 @@ tests := tstscanf test_rdwr test-popen tstgetln test-fseek \ bug25 tst-printf-round bug23-2 bug23-3 bug23-4 bug26 tst-fmemopen3 \ tst-printf-bz18872 tst-vfprintf-width-prec tst-fmemopen4 \ tst-vfprintf-user-type \ + tst-vfprintf-mbs-prec \ test-srcs = tst-unbputc tst-printf diff --git a/stdio-common/tst-vfprintf-mbs-prec.c b/stdio-common/tst-vfprintf-mbs-prec.c new file mode 100644 index 0000000000..43e45191e9 --- /dev/null +++ b/stdio-common/tst-vfprintf-mbs-prec.c @@ -0,0 +1,543 @@ +/* Test for wchar_t/multi-byte conversion and precision in vfprintf. + Copyright (C) 2017 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 + <http://www.gnu.org/licenses/>. */ + +#include <locale.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <string.h> +#include <support/check.h> +#include <support/test-driver.h> +#include <wchar.h> + +#define DYNARRAY_STRUCT str +#define DYNARRAY_ELEMENT char +#define DYNARRAY_PREFIX str_ +#include <malloc/dynarray-skeleton.c> + +#define DYNARRAY_STRUCT wstr +#define DYNARRAY_ELEMENT wchar_t +#define DYNARRAY_PREFIX wstr_ +#include <malloc/dynarray-skeleton.c> + +#define DYNARRAY_STRUCT len +#define DYNARRAY_ELEMENT size_t +#define DYNARRAY_PREFIX len_ +#include <malloc/dynarray-skeleton.c> + +/* This should be larger than the internal buffer in vfprintf. The + constant needs to be kept in sync with the format strings in + test_mbs_long and test_wide_long. */ +enum { WIDE_STRING_LENGTH = 1000 }; + +/* Creates two large, random strings used for truncation testing. + After the call, *MBS will be encoded in UTF-8, and *WIDE will + contain the same string in the internal UCS-32 encoding. Both + strings are null-terminated. The array *LENGTH counts the number + of multi-byte characters for each prefix string of *WIDE: The first + N wide characters of *WIDE correspond the first (*LENGTH)[N] bytes + of *MBS. The caller should deallocate all three arrays using + free. */ +static void +make_random_string (char **mbs, wchar_t **wide, size_t **length) +{ + struct str str; + str_init (&str); + struct wstr wstr; + wstr_init (&wstr); + struct len len; + len_init (&len); + + for (int i = 0; i < WIDE_STRING_LENGTH; ++i) + { + len_add (&len, str_size (&str)); + /* Cover some multi-byte UTF-8 sequences. Avoid the null + character. */ + uint32_t ch = 1 + (rand () % 521); + wstr_add (&wstr, ch); + + /* Limited UTF-8 conversion. */ + if (ch <= 127) + str_add (&str, ch); + else + { + /* We only implement two-byte sequences. */ + uint32_t first = ch >> 6; + TEST_VERIFY (first < 32); + str_add (&str, 0xC0 | first); + str_add (&str, 0x80 | (ch & 0x3f)); + } + } + len_add (&len, str_size (&str)); + wstr_add (&wstr, L'\0'); + str_add (&str, '\0'); + + *mbs = str_finalize (&str, NULL); + TEST_VERIFY_EXIT (*mbs != NULL); + *wide = wstr_finalize (&wstr, NULL); + TEST_VERIFY_EXIT (*wide != NULL); + *length = len_finalize (&len, NULL); + TEST_VERIFY_EXIT (*length != NULL); +} + +/* snprintf tests (multi-byte result). */ +static void +test_mbs_result (void) +{ + char buf[200]; + + /* ASCII wide string. */ + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%ls", L"xyz") == 3); + TEST_VERIFY (strcmp (buf, "xyz") == 0); + + /* Unicode wide string. */ + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + + /* Varying precisions. */ + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%.1ls", L"x\u00DFz") == 1); + TEST_VERIFY (strcmp (buf, "x") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%.2ls", L"x\u00DFz") == 1); + TEST_VERIFY (strcmp (buf, "x") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%.3ls", L"x\u00DFz") == 3); + TEST_VERIFY (strcmp (buf, "x\xC3\x9F") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%.4ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%.5ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + + /* Varying precisions with width 2, right-justified. */ + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%2.1ls", L"x\u00DFz") == 2); + TEST_VERIFY (strcmp (buf, " x") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%2.2ls", L"x\u00DFz") == 2); + TEST_VERIFY (strcmp (buf, " x") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%2.3ls", L"x\u00DFz") == 3); + TEST_VERIFY (strcmp (buf, "x\xC3\x9F") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%2.4ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%2.5ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + + /* Varying precisions with width 2, left-justified. */ + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-2.1ls", L"x\u00DFz") == 2); + TEST_VERIFY (strcmp (buf, "x ") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-2.2ls", L"x\u00DFz") == 2); + TEST_VERIFY (strcmp (buf, "x ") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-2.3ls", L"x\u00DFz") == 3); + TEST_VERIFY (strcmp (buf, "x\xC3\x9F") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-2.4ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-2.5ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + + /* Varying precisions with width 3, right-justified. */ + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%3.1ls", L"x\u00DFz") == 3); + TEST_VERIFY (strcmp (buf, " x") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%3.2ls", L"x\u00DFz") == 3); + TEST_VERIFY (strcmp (buf, " x") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%3.3ls", L"x\u00DFz") == 3); + TEST_VERIFY (strcmp (buf, "x\xC3\x9F") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%3.4ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%3.5ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + + /* Varying precisions with width 3, left-justified. */ + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-3.1ls", L"x\u00DFz") == 3); + TEST_VERIFY (strcmp (buf, "x ") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-3.2ls", L"x\u00DFz") == 3); + TEST_VERIFY (strcmp (buf, "x ") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-3.3ls", L"x\u00DFz") == 3); + TEST_VERIFY (strcmp (buf, "x\xC3\x9F") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-3.4ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-3.5ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + + /* Varying precisions with width 4, right-justified. */ + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%4.1ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, " x") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%4.2ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, " x") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%4.3ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, " x\xC3\x9F") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%4.4ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%4.5ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + + /* Varying precisions with width 4, left-justified. */ + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-4.1ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x ") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-4.2ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x ") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-4.3ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9F ") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-4.4ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); + memset (buf, '@', sizeof (buf)); + TEST_VERIFY (snprintf (buf, sizeof (buf), "%-4.5ls", L"x\u00DFz") == 4); + TEST_VERIFY (strcmp (buf, "x\xC3\x9Fz") == 0); +} + +/* swprintf tests (wide string result). */ +static void +test_wide_result (void) +{ + enum { size = 20 }; + wchar_t buf[20]; + + /* ASCII wide string. */ + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%s", "xyz") == 3); + TEST_VERIFY (wcscmp (buf, L"xyz") == 0); + + /* Unicode wide string. */ + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz") == 0); + + /* Varying precisions. */ + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%.1s", "x\xC3\x9Fz") == 1); + TEST_VERIFY (wcscmp (buf, L"x") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%.2s", "x\xC3\x9Fz") == 2); + TEST_VERIFY (wcscmp (buf, L"x\u00DF") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%.3s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%.4s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz") == 0); + + /* Varying precisions with width 2, right-justified. */ + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%2.1s", "x\xC3\x9Fz") == 2); + TEST_VERIFY (wcscmp (buf, L" x") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%2.2s", "x\xC3\x9Fz") == 2); + TEST_VERIFY (wcscmp (buf, L"x\u00DF") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%2.3s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%2.4s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz") == 0); + + /* Varying precisions with width 2, left-justified. */ + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-2.1s", "x\xC3\x9Fz") == 2); + TEST_VERIFY (wcscmp (buf, L"x ") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-2.2s", "x\xC3\x9Fz") == 2); + TEST_VERIFY (wcscmp (buf, L"x\u00DF") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-2.3s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-2.4s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz") == 0); + + /* Varying precisions with width 3, right-justified. */ + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%3.1s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L" x") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%3.2s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L" x\u00DF") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%3.3s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%3.4s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz") == 0); + + /* Varying precisions with width 3, left-justified. */ + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-3.1s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x ") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-3.2s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x\u00DF ") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-3.3s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-3.4s", "x\xC3\x9Fz") == 3); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz") == 0); + + /* Varying precisions with width 4, right-justified. */ + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%4.1s", "x\xC3\x9Fz") == 4); + TEST_VERIFY (wcscmp (buf, L" x") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%4.2s", "x\xC3\x9Fz") == 4); + TEST_VERIFY (wcscmp (buf, L" x\u00DF") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%4.3s", "x\xC3\x9Fz") == 4); + TEST_VERIFY (wcscmp (buf, L" x\u00DFz") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%4.4s", "x\xC3\x9Fz") == 4); + TEST_VERIFY (wcscmp (buf, L" x\u00DFz") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%4.5s", "x\xC3\x9Fz") == 4); + TEST_VERIFY (wcscmp (buf, L" x\u00DFz") == 0); + + /* Varying precisions with width 4, left-justified. */ + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-4.1s", "x\xC3\x9Fz") == 4); + TEST_VERIFY (wcscmp (buf, L"x ") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-4.2s", "x\xC3\x9Fz") == 4); + TEST_VERIFY (wcscmp (buf, L"x\u00DF ") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-4.3s", "x\xC3\x9Fz") == 4); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz ") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-4.4s", "x\xC3\x9Fz") == 4); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz ") == 0); + wmemset (buf, '@', size); + TEST_VERIFY (swprintf (buf, size, L"%-4.5s", "x\xC3\x9Fz") == 4); + TEST_VERIFY (wcscmp (buf, L"x\u00DFz ") == 0); +} + +/* Test with long strings and multi-byte result. */ +static void +test_mbs_long (const char *mbs, const wchar_t *wide, const size_t *length) +{ + char buf[4000]; + _Static_assert (sizeof (buf) > 3 * WIDE_STRING_LENGTH, + "buffer size consistent with string length"); + const char *suffix = "||TERM"; + TEST_VERIFY_EXIT (sizeof (buf) + > length[WIDE_STRING_LENGTH] + strlen (suffix)); + + /* Test formatting of the entire string. */ + { + int ret = snprintf (buf, sizeof (buf), "%ls%s", wide, suffix); + TEST_VERIFY (ret == length[WIDE_STRING_LENGTH] + strlen (suffix)); + TEST_VERIFY (memcmp (buf, mbs, length[WIDE_STRING_LENGTH]) == 0); + TEST_VERIFY (strcmp (buf + length[WIDE_STRING_LENGTH], suffix) == 0); + + /* Left-justified string, printed in full. */ + ret = snprintf (buf, sizeof (buf), "%-3500ls%s", wide, suffix); + TEST_VERIFY (ret == 3500 + strlen (suffix)); + TEST_VERIFY (memcmp (buf, mbs, length[WIDE_STRING_LENGTH]) == 0); + for (size_t i = length[WIDE_STRING_LENGTH]; i < 3500; ++i) + TEST_VERIFY (buf[i] == ' '); + TEST_VERIFY (strcmp (buf + 3500, suffix) == 0); + + /* Right-justified string, printed in full. */ + ret = snprintf (buf, sizeof (buf), "%3500ls%s", wide, suffix); + TEST_VERIFY (ret == 3500 + strlen (suffix)); + size_t padding = 3500 - length[WIDE_STRING_LENGTH]; + for (size_t i = 0; i < padding; ++i) + TEST_VERIFY (buf[i] == ' '); + TEST_VERIFY (memcmp (buf + padding, mbs, length[WIDE_STRING_LENGTH]) == 0); + TEST_VERIFY (strcmp (buf + 3500, suffix) == 0); + } + + size_t wide_characters_converted = 0; + for (int mbs_len = 0; mbs_len <= length[WIDE_STRING_LENGTH] + 1; + ++mbs_len) + { + if (wide_characters_converted < WIDE_STRING_LENGTH + && mbs_len >= length[wide_characters_converted + 1]) + /* The requested prefix length contains room for another wide + character. */ + ++wide_characters_converted; + if (test_verbose > 0) + printf ("info: %s: mbs_len=%d wide_chars_converted=%zu length=%zu\n", + __func__, mbs_len, wide_characters_converted, + length[wide_characters_converted]); + TEST_VERIFY (length[wide_characters_converted] <= mbs_len); + TEST_VERIFY (wide_characters_converted == 0 + || length[wide_characters_converted - 1] < mbs_len); + + int ret = snprintf (buf, sizeof (buf), "%.*ls%s", mbs_len, wide, suffix); + TEST_VERIFY (ret == length[wide_characters_converted] + strlen (suffix)); + TEST_VERIFY (memcmp (buf, mbs, length[wide_characters_converted]) == 0); + TEST_VERIFY (strcmp (buf + length[wide_characters_converted], + suffix) == 0); + + /* Left-justified string, printed in full. */ + if (test_verbose) + printf ("info: %s: left-justified\n", __func__); + ret = snprintf (buf, sizeof (buf), "%-3500.*ls%s", + mbs_len, wide, suffix); + TEST_VERIFY (ret == 3500 + strlen (suffix)); + TEST_VERIFY (memcmp (buf, mbs, length[wide_characters_converted]) == 0); + for (size_t i = length[wide_characters_converted]; i < 3500; ++i) + TEST_VERIFY (buf[i] == ' '); + TEST_VERIFY (strcmp (buf + 3500, suffix) == 0); + + /* Right-justified string, printed in full. */ + if (test_verbose) + printf ("info: %s: right-justified\n", __func__); + ret = snprintf (buf, sizeof (buf), "%3500.*ls%s", mbs_len, wide, suffix); + TEST_VERIFY (ret == 3500 + strlen (suffix)); + size_t padding = 3500 - length[wide_characters_converted]; + for (size_t i = 0; i < padding; ++i) + TEST_VERIFY (buf[i] == ' '); + TEST_VERIFY (memcmp (buf + padding, mbs, + length[wide_characters_converted]) == 0); + TEST_VERIFY (strcmp (buf + 3500, suffix) == 0); + } +} + +/* Test with long strings and wide string result. */ +static void +test_wide_long (const char *mbs, const wchar_t *wide, const size_t *length) +{ + wchar_t buf[2000]; + _Static_assert (sizeof (buf) > sizeof (wchar_t) * WIDE_STRING_LENGTH, + "buffer size consistent with string length"); + const wchar_t *suffix = L"||TERM"; + TEST_VERIFY_EXIT (sizeof (buf) + > length[WIDE_STRING_LENGTH] + wcslen (suffix)); + + /* Test formatting of the entire string. */ + { + int ret = swprintf (buf, sizeof (buf), L"%s%ls", mbs, suffix); + TEST_VERIFY (ret == WIDE_STRING_LENGTH + wcslen (suffix)); + TEST_VERIFY (wmemcmp (buf, wide, WIDE_STRING_LENGTH) == 0); + TEST_VERIFY (wcscmp (buf + WIDE_STRING_LENGTH, suffix) == 0); + + /* Left-justified string, printed in full. */ + ret = swprintf (buf, sizeof (buf), L"%-1500s%ls", mbs, suffix); + TEST_VERIFY (ret == 1500 + wcslen (suffix)); + TEST_VERIFY (wmemcmp (buf, wide, WIDE_STRING_LENGTH) == 0); + for (size_t i = WIDE_STRING_LENGTH; i < 1500; ++i) + TEST_VERIFY (buf[i] == L' '); + TEST_VERIFY (wcscmp (buf + 1500, suffix) == 0); + + /* Right-justified string, printed in full. */ + ret = swprintf (buf, sizeof (buf), L"%1500s%ls", mbs, suffix); + TEST_VERIFY (ret == 1500 + wcslen (suffix)); + size_t padding = 1500 - WIDE_STRING_LENGTH; + for (size_t i = 0; i < padding; ++i) + TEST_VERIFY (buf[i] == ' '); + TEST_VERIFY (wmemcmp (buf + padding, wide, WIDE_STRING_LENGTH) == 0); + TEST_VERIFY (wcscmp (buf + 1500, suffix) == 0); + } + + for (int wide_len = 0; wide_len <= WIDE_STRING_LENGTH + 1; ++wide_len) + { + size_t actual_wide_len; + if (wide_len < WIDE_STRING_LENGTH) + actual_wide_len = wide_len; + else + actual_wide_len = WIDE_STRING_LENGTH; + if (test_verbose > 0) + printf ("info: %s: wide_len=%d actual_wide_len=%zu\n", + __func__, wide_len, actual_wide_len); + + int ret = swprintf (buf, sizeof (buf), L"%.*s%ls", + wide_len, mbs, suffix); + TEST_VERIFY (ret == actual_wide_len + wcslen (suffix)); + TEST_VERIFY (wmemcmp (buf, wide, actual_wide_len) == 0); + TEST_VERIFY (wcscmp (buf + actual_wide_len, suffix) == 0); + + /* Left-justified string, printed in full. */ + ret = swprintf (buf, sizeof (buf), L"%-1500.*s%ls", + wide_len, mbs, suffix); + TEST_VERIFY (ret == 1500 + wcslen (suffix)); + TEST_VERIFY (wmemcmp (buf, wide, actual_wide_len) == 0); + for (size_t i = actual_wide_len; i < 1500; ++i) + TEST_VERIFY (buf[i] == L' '); + TEST_VERIFY (wcscmp (buf + 1500, suffix) == 0); + + /* Right-justified string, printed in full. */ + ret = swprintf (buf, sizeof (buf), L"%1500.*s%ls", + wide_len, mbs, suffix); + TEST_VERIFY (ret == 1500 + wcslen (suffix)); + size_t padding = 1500 - actual_wide_len; + for (size_t i = 0; i < padding; ++i) + TEST_VERIFY (buf[i] == L' '); + TEST_VERIFY (wmemcmp (buf + padding, wide, actual_wide_len) == 0); + TEST_VERIFY (wcscmp (buf + 1500, suffix) == 0); + } +} + +static int +do_test (void) +{ + /* This test only covers UTF-8 as a multi-byte character set. A + locale with a multi-byte character set with shift state would be + a relevant test target as well, but glibc currently does not ship + such a locale. */ + TEST_VERIFY (setlocale (LC_CTYPE, "de_DE.UTF-8") != NULL); + + test_mbs_result (); + test_wide_result (); + + char *mbs; + wchar_t *wide; + size_t *length; + make_random_string (&mbs, &wide, &length); + TEST_VERIFY (strlen (mbs) == length[WIDE_STRING_LENGTH]); + if (test_verbose > 0) + printf ("info: long multi-byte string contains %zu characters\n", + length[WIDE_STRING_LENGTH]); + test_mbs_long (mbs, wide, length); + test_wide_long (mbs, wide, length); + free (mbs); + free (wide); + free (length); + + return 0; +} + +#include <support/test-driver.c> |