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dependencies/libarchive-3.4.2/doc/html/archive_read_extract.3.html
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dependencies/libarchive-3.4.2/doc/html/archive_read_extract.3.html
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<!-- Creator : groff version 1.22.3 -->
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<!-- CreationDate: Tue Feb 11 22:58:44 2020 -->
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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"http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta name="generator" content="groff -Thtml, see www.gnu.org">
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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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<meta name="Content-Style" content="text/css">
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<style type="text/css">
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p { margin-top: 0; margin-bottom: 0; vertical-align: top }
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pre { margin-top: 0; margin-bottom: 0; vertical-align: top }
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table { margin-top: 0; margin-bottom: 0; vertical-align: top }
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h1 { text-align: center }
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</style>
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<title></title>
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</head>
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<body>
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<hr>
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<p>ARCHIVE_READ_EXTRACT(3) BSD Library Functions Manual
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ARCHIVE_READ_EXTRACT(3)</p>
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<p style="margin-top: 1em"><b>NAME</b></p>
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<p style="margin-left:6%;"><b>archive_read_extract</b>,
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<b>archive_read_extract2</b>,
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<b>archive_read_extract_set_progress_callback</b> —
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functions for reading streaming archives</p>
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<p style="margin-top: 1em"><b>LIBRARY</b></p>
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<p style="margin-left:6%;">Streaming Archive Library
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(libarchive, -larchive)</p>
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<p style="margin-top: 1em"><b>SYNOPSIS</b></p>
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<p style="margin-left:6%;"><b>#include
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<archive.h></b></p>
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<p style="margin-left:6%; margin-top: 1em"><i>int</i></p>
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<p><b>archive_read_extract</b>(<i>struct archive *</i>,
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<i>struct archive_entry *</i>,
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<i>int flags</i>);</p>
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<p style="margin-left:6%; margin-top: 1em"><i>int</i></p>
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<p><b>archive_read_extract2</b>(<i>struct archive *src</i>,
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<i>struct archive_entry *</i>,
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<i>struct archive *dest</i>);</p>
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<p style="margin-left:6%; margin-top: 1em"><i>void</i></p>
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<p><b>archive_read_extract_set_progress_callback</b>(<i>struct archive *</i>,
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<i>void (*func)(void *)</i>,
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<i>void *user_data</i>);</p>
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<p style="margin-top: 1em"><b>DESCRIPTION <br>
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archive_read_extract</b>(),
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<b>archive_read_extract_set_skip_file</b>()</p>
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<p style="margin-left:17%;">A convenience function that
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wraps the corresponding archive_write_disk(3) interfaces.
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The first call to <b>archive_read_extract</b>() creates a
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restore object using archive_write_disk_new(3) and
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archive_write_disk_set_standard_lookup(3), then
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transparently invokes archive_write_disk_set_options(3),
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archive_write_header(3), archive_write_data(3), and
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archive_write_finish_entry(3) to create the entry on disk
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and copy data into it. The <i>flags</i> argument is passed
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unmodified to archive_write_disk_set_options(3).</p>
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<p><b>archive_read_extract2</b>()</p>
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<p style="margin-left:17%;">This is another version of
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<b>archive_read_extract</b>() that allows you to provide
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your own restore object. In particular, this allows you to
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override the standard lookup functions using
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archive_write_disk_set_group_lookup(3), and
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archive_write_disk_set_user_lookup(3). Note that
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<b>archive_read_extract2</b>() does not accept a
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<i>flags</i> argument; you should use
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<b>archive_write_disk_set_options</b>() to set the restore
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options yourself.</p>
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<p><b>archive_read_extract_set_progress_callback</b>()</p>
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<p style="margin-left:17%;">Sets a pointer to a
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user-defined callback that can be used for updating progress
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displays during extraction. The progress function will be
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invoked during the extraction of large regular files. The
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progress function will be invoked with the pointer provided
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to this call. Generally, the data pointed to should include
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a reference to the archive object and the archive_entry
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object so that various statistics can be retrieved for the
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progress display.</p>
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<p style="margin-top: 1em"><b>RETURN VALUES</b></p>
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<p style="margin-left:6%;">Most functions return zero on
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success, non-zero on error. The possible return codes
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include: <b>ARCHIVE_OK</b> (the operation succeeded),
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<b>ARCHIVE_WARN</b> (the operation succeeded but a
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non-critical error was encountered), <b>ARCHIVE_EOF</b>
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(end-of-archive was encountered), <b>ARCHIVE_RETRY</b> (the
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operation failed but can be retried), and
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<b>ARCHIVE_FATAL</b> (there was a fatal error; the archive
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should be closed immediately).</p>
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<p style="margin-top: 1em"><b>ERRORS</b></p>
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<p style="margin-left:6%;">Detailed error codes and textual
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descriptions are available from the <b>archive_errno</b>()
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and <b>archive_error_string</b>() functions.</p>
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<p style="margin-top: 1em"><b>SEE ALSO</b></p>
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<p style="margin-left:6%;">tar(1), archive_read(3),
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archive_read_data(3), archive_read_filter(3),
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archive_read_format(3), archive_read_open(3),
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archive_read_set_options(3), archive_util(3), libarchive(3),
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tar(5)</p>
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<p style="margin-left:6%; margin-top: 1em">BSD
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February 2, 2012 BSD</p>
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<hr>
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</body>
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</html>
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