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92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
/* Check two strings for equality.
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Copyright (C) 2018-2020 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 <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/xmemstream.h>
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static void
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report_length (const char *what, const char *str, size_t length)
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{
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if (str == NULL)
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printf (" %s string: NULL\n", what);
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else
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printf (" %s string: %zu bytes\n", what, length);
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}
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static void
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report_string (const char *what, const unsigned char *blob,
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size_t length, const char *expr)
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{
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if (length > 0)
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{
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printf (" %s (evaluated from %s):\n", what, expr);
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char *quoted = support_quote_blob (blob, length);
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printf (" \"%s\"\n", quoted);
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free (quoted);
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fputs (" ", stdout);
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for (size_t i = 0; i < length; ++i)
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printf (" %02X", blob[i]);
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putc ('\n', stdout);
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}
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}
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static size_t
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string_length_or_zero (const char *str)
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{
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if (str == NULL)
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return 0;
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else
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return strlen (str);
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}
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void
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support_test_compare_string (const char *left, const char *right,
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const char *file, int line,
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const char *left_expr, const char *right_expr)
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{
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/* Two null pointers are accepted. */
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if (left == NULL && right == NULL)
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return;
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size_t left_length = string_length_or_zero (left);
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size_t right_length = string_length_or_zero (right);
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if (left_length != right_length || left == NULL || right == NULL
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|| memcmp (left, right, left_length) != 0)
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{
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support_record_failure ();
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printf ("%s:%d: error: string comparison failed\n", file, line);
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if (left_length == right_length && right != NULL && left != NULL)
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printf (" string length: %zu bytes\n", left_length);
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else
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{
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report_length ("left", left, left_length);
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report_length ("right", right, right_length);
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}
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report_string ("left", (const unsigned char *) left,
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left_length, left_expr);
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report_string ("right", (const unsigned char *) right,
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right_length, right_expr);
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}
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}
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