1 .\" Copyright (c) 2003-2007 Tim Kientzle
2 .\" All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
8 .\" notice, this list of conditions and the following disclaimer.
9 .\" 2. Redistributions in binary form must reproduce the above copyright
10 .\" notice, this list of conditions and the following disclaimer in the
11 .\" documentation and/or other materials provided with the distribution.
13 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 .Nm archive_clear_error ,
32 .Nm archive_compression ,
33 .Nm archive_compression_name ,
34 .Nm archive_copy_error ,
36 .Nm archive_error_string ,
37 .Nm archive_file_count ,
39 .Nm archive_format_name ,
41 .Nd libarchive utility functions
45 .Fn archive_clear_error "struct archive *"
47 .Fn archive_compression "struct archive *"
49 .Fn archive_compression_name "struct archive *"
51 .Fn archive_copy_error "struct archive *" "struct archive *"
53 .Fn archive_errno "struct archive *"
55 .Fn archive_error_string "struct archive *"
57 .Fn archive_file_count "struct archive *"
59 .Fn archive_format "struct archive *"
61 .Fn archive_format_name "struct archive *"
64 .Fa "struct archive *"
70 These functions provide access to various information about the
75 .Bl -tag -compact -width indent
76 .It Fn archive_clear_error
77 Clears any error information left over from a previous call.
78 Not generally used in client code.
79 .It Fn archive_compression
80 Returns a numeric code indicating the current compression.
82 .Fn archive_read_open .
83 .It Fn archive_compression_name
84 Returns a text description of the current compression suitable for display.
85 .It Fn archive_copy_error
86 Copies error information from one archive to another.
88 Returns a numeric error code (see
90 indicating the reason for the most recent error return.
91 .It Fn archive_error_string
92 Returns a textual error message suitable for display.
93 The error message here is usually more specific than that
94 obtained from passing the result of
98 .It Fn archive_file_count
99 Returns a count of the number of files processed by this archive object.
100 The count is incremented by calls to
101 .Xr archive_write_header
103 .Xr archive_read_next_header .
104 .It Fn archive_format
105 Returns a numeric code indicating the format of the current
107 This value is set by a successful call to
108 .Fn archive_read_next_header .
109 Note that it is common for this value to change from
111 For example, a tar archive might have several entries that
112 utilize GNU tar extensions and several entries that do not.
113 These entries will have different format codes.
114 .It Fn archive_format_name
115 A textual description of the format of the current entry.
116 .It Fn archive_set_error
117 Sets the numeric error code and error description that will be returned
121 .Fn archive_error_string .
122 This function should be used within I/O callbacks to set system-specific
123 error codes and error descriptions.
124 This function accepts a printf-like format string and arguments.
125 However, you should be careful to use only the following printf
142 Field-width specifiers and other printf features are
143 not uniformly supported and should not be used.
147 .Xr archive_write 3 ,
153 library first appeared in
159 library was written by
160 .An Tim Kientzle Aq kientzle@acm.org .