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688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
221 lines
6.2 KiB
C
221 lines
6.2 KiB
C
/* Test for user-defined types in vfprintf.
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Copyright (C) 2017-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* This test contains a printf format specifier, %P, with a custom
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type which is a long/double pair. If a precision is specified,
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this indicates the number of such pairs which constitute the
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argument. */
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#include <locale.h>
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#include <printf.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <support/check.h>
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#include <support/support.h>
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#include <support/test-driver.h>
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#include <wchar.h>
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/* Initialized by do_test using register_printf_type. */
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static int user_type;
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struct two_argument
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{
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long i;
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double d;
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};
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static void
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my_va_arg_function (void *mem, va_list *ap)
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{
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if (test_verbose > 0)
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printf ("info: %s (%p) called\n", __func__, mem);
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struct two_argument *pair = mem;
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pair->i = va_arg (*ap, long);
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pair->d = va_arg (*ap, double);
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}
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static int
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my_printf_function (FILE *fp, const struct printf_info *info,
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const void *const *args)
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{
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if (test_verbose > 0)
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printf ("info: %s (%p, %p, {%p}@%p) called for %%%lc (prec %d)\n",
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__func__, fp, info, args[0], args, (wint_t) info->spec,
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info->prec);
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TEST_VERIFY (info->spec == 'P');
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size_t nargs;
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int printed;
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if (info->prec >= 0)
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{
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if (fputc ('{', fp) < 0)
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return -1;
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nargs = info->prec;
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printed = 1;
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}
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else
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{
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nargs = 1;
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printed = 0;
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}
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for (size_t i = 0; i < nargs; ++i)
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{
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if (i != 0)
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{
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if (fputc (',', fp) < 0)
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return -1;
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++printed;
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}
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/* NB: Triple pointer indirection. ARGS is an array of void *,
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and those pointers point to a pointer to the memory area
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supplied to my_va_arg_function. */
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struct two_argument *pair = *(void **) args[i];
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int ret = fprintf (fp, "(%ld, %f)", pair->i, pair->d);
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if (ret < 0)
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return -1;
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printed += ret;
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}
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if (info->prec >= 0)
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{
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if (fputc ('}', fp) < 0)
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return -1;
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++printed;
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}
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return printed;
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}
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static int
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my_arginfo_function (const struct printf_info *info,
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size_t n, int *argtypes, int *size)
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{
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/* Avoid recursion. */
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if (info->spec != 'P')
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return -1;
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if (test_verbose > 0)
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printf ("info: %s (%p, %zu, %p, %p) called for %%%lc (prec %d)\n",
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__func__, info, n, argtypes, size, (wint_t) info->spec,
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info->prec);
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TEST_VERIFY_EXIT (n >= 1);
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size_t nargs;
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if (info->prec >= 0)
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nargs = info->prec;
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else
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nargs = 1;
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size_t to_fill = nargs;
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if (to_fill > n)
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to_fill = n;
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for (size_t i = 0; i < to_fill; ++i)
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{
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argtypes[i] = user_type;
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size[i] = sizeof (struct two_argument);
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}
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if (test_verbose > 0)
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printf ("info: %s return value: %zu\n", __func__, nargs);
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return nargs;
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}
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static int
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do_test (void)
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{
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user_type = register_printf_type (my_va_arg_function);
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if (test_verbose > 0)
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printf ("info: allocated user type: %d\n", user_type);
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TEST_VERIFY_EXIT (user_type >= PA_LAST);
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TEST_VERIFY_EXIT (register_printf_specifier
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('P', my_printf_function, my_arginfo_function) >= 0);
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/* Alias declaration for asprintf, to avoid the format string
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attribute and the associated warning. */
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extern int asprintf_alias (char **, const char *, ...) __asm__ ("asprintf");
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TEST_VERIFY (asprintf_alias == asprintf);
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char *str = NULL;
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TEST_VERIFY (asprintf_alias (&str, "[[%P]]", 123L, 456.0) >= 0);
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if (test_verbose > 0)
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printf ("info: %s\n", str);
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TEST_VERIFY (strcmp (str, "[[(123, 456.000000)]]") == 0);
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free (str);
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str = NULL;
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TEST_VERIFY (asprintf_alias (&str, "[[%1$P %1$P]]", 123L, 457.0) >= 0);
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if (test_verbose > 0)
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printf ("info: %s\n", str);
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TEST_VERIFY (strcmp (str, "[[(123, 457.000000) (123, 457.000000)]]") == 0);
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free (str);
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str = NULL;
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TEST_VERIFY (asprintf_alias (&str, "[[%.1P]]", 1L, 2.0) >= 0);
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if (test_verbose > 0)
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printf ("info: %s\n", str);
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TEST_VERIFY (strcmp (str, "[[{(1, 2.000000)}]]") == 0);
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free (str);
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str = NULL;
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TEST_VERIFY (asprintf_alias (&str, "[[%.2P]]", 1L, 2.0, 3L, 4.0) >= 0);
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if (test_verbose > 0)
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printf ("info: %s\n", str);
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TEST_VERIFY (strcmp (str, "[[{(1, 2.000000),(3, 4.000000)}]]") == 0);
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free (str);
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str = NULL;
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TEST_VERIFY (asprintf_alias
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(&str, "[[%.2P | %.3P]]",
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/* argument 1: */ 1L, 2.0, 3L, 4.0,
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/* argument 2: */ 5L, 6.0, 7L, 8.0, 9L, 10.0)
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>= 0);
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if (test_verbose > 0)
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printf ("info: %s\n", str);
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TEST_VERIFY (strcmp (str,
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"[["
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"{(1, 2.000000),(3, 4.000000)}"
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" | "
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"{(5, 6.000000),(7, 8.000000),(9, 10.000000)}"
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"]]") == 0);
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free (str);
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/* The following subtest fails due to bug 21534. */
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#if 0
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str = NULL;
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TEST_VERIFY (asprintf_alias
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(&str, "[[%1$.2P | %2$.3P | %1$.2P]]",
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/* argument 1: */ 1L, 2.0, 3L, 4.0,
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/* argument 2: */ 5L, 6.0, 7L, 8.0, 9L, 10.0)
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>= 0);
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if (test_verbose > 0)
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printf ("info: %s\n", str);
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TEST_VERIFY (strcmp (str,
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"[["
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"{(1, 2.000000),(3, 4.000000)}"
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" | "
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"{(5, 6.000000),(7, 8.000000),(9, 10.000000)}"
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" | "
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"{(1, 2.000000),(3, 4.000000)}"
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"]]") == 0);
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free (str);
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#endif
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return 0;
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}
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#include <support/test-driver.c>
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