diff options
Diffstat (limited to 'src/libs/3rdparty/libarchive/archive_read_support_format_empty.c')
-rw-r--r-- | src/libs/3rdparty/libarchive/archive_read_support_format_empty.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/libs/3rdparty/libarchive/archive_read_support_format_empty.c b/src/libs/3rdparty/libarchive/archive_read_support_format_empty.c new file mode 100644 index 000000000..53fb6cc47 --- /dev/null +++ b/src/libs/3rdparty/libarchive/archive_read_support_format_empty.c @@ -0,0 +1,96 @@ +/*- + * Copyright (c) 2003-2007 Tim Kientzle + * 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(S) ``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(S) 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 "archive_platform.h" +__FBSDID("$FreeBSD: head/lib/libarchive/archive_read_support_format_empty.c 191524 2009-04-26 18:24:14Z kientzle $"); + +#include "archive.h" +#include "archive_entry.h" +#include "archive_private.h" +#include "archive_read_private.h" + +static int archive_read_format_empty_bid(struct archive_read *, int); +static int archive_read_format_empty_read_data(struct archive_read *, + const void **, size_t *, int64_t *); +static int archive_read_format_empty_read_header(struct archive_read *, + struct archive_entry *); +int +archive_read_support_format_empty(struct archive *_a) +{ + struct archive_read *a = (struct archive_read *)_a; + int r; + + archive_check_magic(_a, ARCHIVE_READ_MAGIC, + ARCHIVE_STATE_NEW, "archive_read_support_format_empty"); + + r = __archive_read_register_format(a, + NULL, + "empty", + archive_read_format_empty_bid, + NULL, + archive_read_format_empty_read_header, + archive_read_format_empty_read_data, + NULL, + NULL, + NULL, + NULL, + NULL); + + return (r); +} + + +static int +archive_read_format_empty_bid(struct archive_read *a, int best_bid) +{ + if (best_bid < 1 && __archive_read_ahead(a, 1, NULL) == NULL) + return (1); + return (-1); +} + +static int +archive_read_format_empty_read_header(struct archive_read *a, + struct archive_entry *entry) +{ + (void)a; /* UNUSED */ + (void)entry; /* UNUSED */ + + a->archive.archive_format = ARCHIVE_FORMAT_EMPTY; + a->archive.archive_format_name = "Empty file"; + + return (ARCHIVE_EOF); +} + +static int +archive_read_format_empty_read_data(struct archive_read *a, + const void **buff, size_t *size, int64_t *offset) +{ + (void)a; /* UNUSED */ + (void)buff; /* UNUSED */ + (void)size; /* UNUSED */ + (void)offset; /* UNUSED */ + + return (ARCHIVE_EOF); +} |