freebsd-skq/lib/libarchive/archive_write_set_format_by_name.c
Tim Kientzle 37320c7575 Overhaul of 'ar' support:
* use "AR_GNU" as the format name instead of AR_SVR4 (it's what everyone is going to call it anyway)
  * Simplify numeric parsing to unsigned (none of the numeric values should ever be negative); don't run off end of numeric fields.
  * Finish parsing the common header fields before the next I/O request (which might dump the contents)
  * Be smarter about format guessing and trimming filenames.
  * Most of the magic values are only used in one place, so just inline them.
  * Many more comments.
  * Be smarter about handling damaged entries; return something reasonable.
  * Call it a "filename table" instead of a "string table"
  * Update tests.

Enable selection of 'ar', 'arbsd', and 'argnu' formats by name
(this allows bsdtar to create ar format archives).

The 'ar' writer still needs some work; it should reject
entries that aren't regular files and should probably also
strip leading paths from filenames.
2007-04-14 22:34:10 +00:00

73 lines
2.4 KiB
C

/*-
* 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("$FreeBSD$");
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include "archive.h"
#include "archive_private.h"
/* A table that maps names to functions. */
static
struct { const char *name; int (*setter)(struct archive *); } names[] =
{
{ "arbsd", archive_write_set_format_ar_bsd },
{ "ar", archive_write_set_format_ar_bsd },
{ "argnu", archive_write_set_format_ar_svr4 },
{ "arsvr4", archive_write_set_format_ar_svr4 },
{ "cpio", archive_write_set_format_cpio },
{ "pax", archive_write_set_format_pax },
{ "posix", archive_write_set_format_pax },
{ "shar", archive_write_set_format_shar },
{ "shardump", archive_write_set_format_shar_dump },
{ "ustar", archive_write_set_format_ustar },
{ NULL, NULL }
};
int
archive_write_set_format_by_name(struct archive *a, const char *name)
{
int i;
for (i = 0; names[i].name != NULL; i++) {
if (strcmp(name, names[i].name) == 0)
return ((names[i].setter)(a));
}
archive_set_error(a, EINVAL, "No such format '%s'", name);
return (ARCHIVE_FATAL);
}