NAME

     archive_read_extract, archive_read_extract2, archive_read_extract_set_progress_callback —
     functions for reading streaming archives

LIBRARY

     Streaming Archive Library (libarchive, -larchive)

SYNOPSIS

     #include <archive.h>

     int
     archive_read_extract(struct archive *, struct archive_entry *, int flags);

     int
     archive_read_extract2(struct archive *src, struct archive_entry *, struct archive *dest);

     void
     archive_read_extract_set_progress_callback(struct archive *, void (*func)(void *),
         void *user_data);

DESCRIPTION

     archive_read_extract(), archive_read_extract_set_skip_file()
             A convenience function that wraps the corresponding archive_write_disk(3)
             interfaces.  The first call to archive_read_extract() creates a restore object using
             archive_write_disk_new(3) and archive_write_disk_set_standard_lookup(3), then
             transparently invokes archive_write_disk_set_options(3), archive_write_header(3),
             archive_write_data(3), and archive_write_finish_entry(3) to create the entry on disk
             and copy data into it.  The flags argument is passed unmodified to
             archive_write_disk_set_options(3).
     archive_read_extract2()
             This is another version of archive_read_extract() that allows you to provide your
             own restore object.  In particular, this allows you to override the standard lookup
             functions using archive_write_disk_set_group_lookup(3), and
             archive_write_disk_set_user_lookup(3).  Note that archive_read_extract2() does not
             accept a flags argument; you should use archive_write_disk_set_options() to set the
             restore options yourself.
     archive_read_extract_set_progress_callback()
             Sets a pointer to a user-defined callback that can be used for updating progress
             displays during extraction.  The progress function will be invoked during the
             extraction of large regular files.  The progress function will be invoked with the
             pointer provided to this call.  Generally, the data pointed to should include a
             reference to the archive object and the archive_entry object so that various
             statistics can be retrieved for the progress display.

RETURN VALUES

     Most functions return zero on success, non-zero on error.  The possible return codes
     include: ARCHIVE_OK (the operation succeeded), ARCHIVE_WARN (the operation succeeded but a
     non-critical error was encountered), ARCHIVE_EOF (end-of-archive was encountered),
     ARCHIVE_RETRY (the operation failed but can be retried), and ARCHIVE_FATAL (there was a
     fatal error; the archive should be closed immediately).

ERRORS

     Detailed error codes and textual descriptions are available from the archive_errno() and
     archive_error_string() functions.

SEE ALSO

     tar(1), archive_read(3), archive_read_data(3), archive_read_filter(3),
     archive_read_format(3), archive_read_open(3), archive_read_set_options(3), archive_util(3),
     libarchive(3), tar(5)