| 1 | /*
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| 2 | * Copyright (c) 2012-2013 Vojtech Horky
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /**
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| 30 | * @file
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| 31 | * Formatting and processing of failed assertion messages.
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| 32 | *
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| 33 | * We are using static buffers to prevent any calls to malloc()/free()
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| 34 | * by the testing framework.
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| 35 | */
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| 36 |
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| 37 | /*
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| 38 | * We need _BSD_SOURCE because of vsnprintf() when compiling under C89.
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| 39 | * In newer versions of features.h, _DEFAULT_SOURCE must be defined as well.
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| 40 | */
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| 41 | #define _BSD_SOURCE
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| 42 | #define _DEFAULT_SOURCE
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| 43 |
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| 44 | #include "internal.h"
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| 45 |
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| 46 | #pragma warning(push, 0)
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| 47 | #include <setjmp.h>
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| 48 | #include <stdarg.h>
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| 49 | #include <stdio.h>
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| 50 | #pragma warning(pop)
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| 51 |
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| 52 |
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| 53 | /** Maximum length of failed-assert message. */
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| 54 | #define MAX_MESSAGE_LENGTH 256
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| 55 |
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| 56 | /** How many assertion messages we need to keep in memory at once. */
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| 57 | #define MESSAGE_BUFFER_COUNT 2
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| 58 |
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| 59 | /** Assertion message buffers. */
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| 60 | static char message_buffer[MESSAGE_BUFFER_COUNT][MAX_MESSAGE_LENGTH + 1];
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| 61 |
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| 62 | /** Currently active assertion buffer. */
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| 63 | static int message_buffer_index = 0;
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| 64 |
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| 65 | void pcut_failed_assertion_fmt(const char *filename, int line, const char *fmt, ...) {
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| 66 | va_list args;
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| 67 | char *current_buffer = message_buffer[message_buffer_index];
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| 68 | size_t offset = 0;
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| 69 | message_buffer_index = (message_buffer_index + 1) % MESSAGE_BUFFER_COUNT;
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| 70 |
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| 71 | pcut_snprintf(current_buffer, MAX_MESSAGE_LENGTH, "%s:%d: ", filename, line);
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| 72 | offset = pcut_str_bytes(current_buffer);
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| 73 |
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| 74 | if (offset + 1 < MAX_MESSAGE_LENGTH) {
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| 75 | va_start(args, fmt);
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| 76 | vsnprintf(current_buffer + offset, MAX_MESSAGE_LENGTH - offset, fmt, args);
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| 77 | va_end(args);
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| 78 | }
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| 79 |
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| 80 | pcut_failed_assertion(current_buffer);
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| 81 | }
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