You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
176 lines
6.0 KiB
176 lines
6.0 KiB
.\" Copyright (c) 2003-2011 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 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.
|
|
.\"
|
|
.\" $FreeBSD: head/lib/libarchive/archive_read.3 191595 2009-04-27 20:13:13Z kientzle $
|
|
.\"
|
|
.Dd March 19, 2011
|
|
.Dt ARCHIVE_READ_FORMAT 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm archive_read_support_format_7zip ,
|
|
.Nm archive_read_support_format_all ,
|
|
.Nm archive_read_support_format_ar ,
|
|
.Nm archive_read_support_format_by_code ,
|
|
.Nm archive_read_support_format_cab ,
|
|
.Nm archive_read_support_format_cpio ,
|
|
.Nm archive_read_support_format_empty ,
|
|
.Nm archive_read_support_format_iso9660 ,
|
|
.Nm archive_read_support_format_lha ,
|
|
.Nm archive_read_support_format_mtree,
|
|
.Nm archive_read_support_format_rar,
|
|
.Nm archive_read_support_format_raw,
|
|
.Nm archive_read_support_format_tar ,
|
|
.Nm archive_read_support_format_xar ,
|
|
.Nm archive_read_support_format_zip
|
|
.Nd functions for reading streaming archives
|
|
.\"
|
|
.Sh SYNOPSIS
|
|
.In archive.h
|
|
.Ft int
|
|
.Fn archive_read_support_format_7zip "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_all "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_ar "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_by_code "struct archive *" "int"
|
|
.Ft int
|
|
.Fn archive_read_support_format_cab "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_cpio "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_empty "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_iso9660 "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_lha "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_mtree "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_rar "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_raw "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_tar "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_xar "struct archive *"
|
|
.Ft int
|
|
.Fn archive_read_support_format_zip "struct archive *"
|
|
.\"
|
|
.Sh DESCRIPTION
|
|
.Bl -tag -compact -width indent
|
|
.It Xo
|
|
.Fn archive_read_support_format_7zip ,
|
|
.Fn archive_read_support_format_ar ,
|
|
.Fn archive_read_support_format_cab ,
|
|
.Fn archive_read_support_format_cpio ,
|
|
.Fn archive_read_support_format_iso9660 ,
|
|
.Fn archive_read_support_format_lha ,
|
|
.Fn archive_read_support_format_mtree ,
|
|
.Fn archive_read_support_format_rar ,
|
|
.Fn archive_read_support_format_raw ,
|
|
.Fn archive_read_support_format_tar ,
|
|
.Fn archive_read_support_format_xar ,
|
|
.Fn archive_read_support_format_zip
|
|
.Xc
|
|
Enables support---including auto-detection code---for the
|
|
specified archive format.
|
|
For example,
|
|
.Fn archive_read_support_format_tar
|
|
enables support for a variety of standard tar formats, old-style tar,
|
|
ustar, pax interchange format, and many common variants.
|
|
.It Fn archive_read_support_format_all
|
|
Enables support for all available formats except the
|
|
.Dq raw
|
|
format (see below).
|
|
.It Fn archive_read_support_format_by_code
|
|
Enables a single format specified by the format code.
|
|
This can be useful when reading a single archive twice;
|
|
use
|
|
.Fn archive_format
|
|
after reading the first time and pass the resulting code
|
|
to this function to selectively enable only the necessary
|
|
format support.
|
|
Note: In statically-linked executables, this will cause
|
|
your program to include support for every format.
|
|
If executable size is a concern, you may wish to avoid
|
|
using this function.
|
|
.It Fn archive_read_support_format_empty
|
|
Enables support for treating empty files as empty archives.
|
|
Because empty files are valid for several different formats,
|
|
it is not possible to accurately determine a format for
|
|
an empty file based purely on contents.
|
|
So empty files are treated by libarchive as a distinct
|
|
format.
|
|
.It Fn archive_read_support_format_raw
|
|
The
|
|
.Dq raw
|
|
format handler allows libarchive to be used to read arbitrary data.
|
|
It treats any data stream as an archive with a single entry.
|
|
The pathname of this entry is
|
|
.Dq data ;
|
|
all other entry fields are unset.
|
|
This is not enabled by
|
|
.Fn archive_read_support_format_all
|
|
in order to avoid erroneous handling of damaged archives.
|
|
.El
|
|
.\" .Sh EXAMPLE
|
|
.Sh RETURN VALUES
|
|
These functions return
|
|
.Cm ARCHIVE_OK
|
|
on success, or
|
|
.Cm ARCHIVE_FATAL .
|
|
.\"
|
|
.Sh ERRORS
|
|
Detailed error codes and textual descriptions are available from the
|
|
.Fn archive_errno
|
|
and
|
|
.Fn archive_error_string
|
|
functions.
|
|
.\"
|
|
.Sh SEE ALSO
|
|
.Xr tar 1 ,
|
|
.Xr libarchive 3 ,
|
|
.Xr archive_read_data 3 ,
|
|
.Xr archive_read_filter 3 ,
|
|
.Xr archive_read_set_options 3 ,
|
|
.Xr archive_util 3 ,
|
|
.Xr tar 5
|
|
.Sh BUGS
|
|
Many traditional archiver programs treat
|
|
empty files as valid empty archives.
|
|
For example, many implementations of
|
|
.Xr tar 1
|
|
allow you to append entries to an empty file.
|
|
Of course, it is impossible to determine the format of an empty file
|
|
by inspecting the contents, so this library treats empty files as
|
|
having a special
|
|
.Dq empty
|
|
format.
|
|
.Pp
|
|
Using the
|
|
.Dq raw
|
|
handler together with any other handler will often work
|
|
but can produce surprising results.
|