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/*-
* Copyright (c) 2013 Hudson River Trading LLC
* Written by: John H. Baldwin <jhb@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <err.h>
#include <errno.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
static wchar_t *buf;
static size_t len;
static void
assert_stream(const wchar_t *contents)
{
if (wcslen(contents) != len)
printf("bad length %zd for \"%ls\"\n", len, contents);
else if (wcsncmp(buf, contents, wcslen(contents)) != 0)
printf("bad buffer \"%ls\" for \"%ls\"\n", buf, contents);
}
static void
open_group_test(void)
{
FILE *fp;
off_t eob;
fp = open_wmemstream(&buf, &len);
if (fp == NULL)
err(1, "failed to open stream");
fwprintf(fp, L"hello my world");
fflush(fp);
assert_stream(L"hello my world");
eob = ftello(fp);
rewind(fp);
fwprintf(fp, L"good-bye");
fseeko(fp, eob, SEEK_SET);
fclose(fp);
assert_stream(L"good-bye world");
free(buf);
}
static void
simple_tests(void)
{
static const wchar_t zerobuf[] =
{ L'f', L'o', L'o', 0, 0, 0, 0, L'b', L'a', L'r', 0 };
wchar_t c;
FILE *fp;
fp = open_wmemstream(&buf, NULL);
if (fp != NULL)
errx(1, "did not fail to open stream");
else if (errno != EINVAL)
err(1, "incorrect error for bad length pointer");
fp = open_wmemstream(NULL, &len);
if (fp != NULL)
errx(1, "did not fail to open stream");
else if (errno != EINVAL)
err(1, "incorrect error for bad buffer pointer");
fp = open_wmemstream(&buf, &len);
if (fp == NULL)
err(1, "failed to open stream");
fflush(fp);
assert_stream(L"");
if (fwide(fp, 0) <= 0)
printf("stream is not wide-oriented\n");
fwprintf(fp, L"fo");
fflush(fp);
assert_stream(L"fo");
fputwc(L'o', fp);
fflush(fp);
assert_stream(L"foo");
rewind(fp);
fflush(fp);
assert_stream(L"");
fseek(fp, 0, SEEK_END);
fflush(fp);
assert_stream(L"foo");
/*
* Test seeking out past the current end. Should zero-fill the
* intermediate area.
*/
fseek(fp, 4, SEEK_END);
fwprintf(fp, L"bar");
fflush(fp);
/*
* Can't use assert_stream() here since this should contain
* embedded null characters.
*/
if (len != 10)
printf("bad length %zd for zero-fill test\n", len);
else if (memcmp(buf, zerobuf, sizeof(zerobuf)) != 0)
printf("bad buffer for zero-fill test\n");
fseek(fp, 3, SEEK_SET);
fwprintf(fp, L" in ");
fflush(fp);
assert_stream(L"foo in ");
fseek(fp, 0, SEEK_END);
fflush(fp);
assert_stream(L"foo in bar");
rewind(fp);
if (fread(&c, sizeof(c), 1, fp) != 0)
printf("fread did not fail\n");
else if (!ferror(fp))
printf("error indicator not set after fread\n");
else
clearerr(fp);
fseek(fp, 4, SEEK_SET);
fwprintf(fp, L"bar baz");
fclose(fp);
assert_stream(L"foo bar baz");
free(buf);
}
static void
seek_tests(void)
{
FILE *fp;
fp = open_wmemstream(&buf, &len);
if (fp == NULL)
err(1, "failed to open stream");
#define SEEK_FAIL(offset, whence, error) do { \
errno = 0; \
if (fseeko(fp, (offset), (whence)) == 0) \
printf("fseeko(%s, %s) did not fail, set pos to %jd\n", \
__STRING(offset), __STRING(whence), \
(intmax_t)ftello(fp)); \
else if (errno != (error)) \
printf("fseeko(%s, %s) failed with %d rather than %s\n",\
__STRING(offset), __STRING(whence), errno, \
__STRING(error)); \
} while (0)
#define SEEK_OK(offset, whence, result) do { \
if (fseeko(fp, (offset), (whence)) != 0) \
printf("fseeko(%s, %s) failed: %s\n", \
__STRING(offset), __STRING(whence), strerror(errno)); \
else if (ftello(fp) != (result)) \
printf("fseeko(%s, %s) seeked to %jd rather than %s\n", \
__STRING(offset), __STRING(whence), \
(intmax_t)ftello(fp), __STRING(result)); \
} while (0)
SEEK_FAIL(-1, SEEK_SET, EINVAL);
SEEK_FAIL(-1, SEEK_CUR, EINVAL);
SEEK_FAIL(-1, SEEK_END, EINVAL);
fwprintf(fp, L"foo");
SEEK_OK(-1, SEEK_CUR, 2);
SEEK_OK(0, SEEK_SET, 0);
SEEK_OK(-1, SEEK_END, 2);
SEEK_OK(OFF_MAX - 1, SEEK_SET, OFF_MAX - 1);
SEEK_FAIL(2, SEEK_CUR, EOVERFLOW);
fclose(fp);
}
int
main(int ac, char **av)
{
open_group_test();
simple_tests();
seek_tests();
return (0);
}
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