mirror of git://sourceware.org/git/glibc.git
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/* Test feature wrapper for formatted 'vsscanf' input.
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Copyright (C) 2025 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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<https://www.gnu.org/licenses/>. */
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#include <stdarg.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <support/support.h>
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static char *sscanf_buf;
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static size_t sscanf_buf_size;
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static void __attribute__ ((destructor))
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scanf_under_test_fini (void)
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{
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free (sscanf_buf);
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}
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static int
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scanf_under_test (const char *restrict fmt, ...)
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{
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size_t i = 0;
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va_list ap;
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int result;
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int ch;
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do
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{
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ch = read_input ();
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if (ch < 0)
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{
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result = ch;
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goto out;
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}
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if (i == sscanf_buf_size)
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{
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sscanf_buf_size += SIZE_CHUNK;
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/* Add an extra byte for the terminating null character. */
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sscanf_buf = xrealloc (sscanf_buf, sscanf_buf_size + 1);
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}
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sscanf_buf[i++] = ch;
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}
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while (ch != ':');
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sscanf_buf[i++] = '\0';
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ch = ungetc (ch, stdin);
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if (ch == EOF)
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{
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result = INPUT_ERROR;
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goto out;
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}
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va_start (ap, fmt);
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result = vsscanf (sscanf_buf, fmt, ap);
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va_end (ap);
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if (result == EOF)
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result = INPUT_EOF;
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out:
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return result;
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}
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