NAME

     archive_read_support_format_7zip, archive_read_support_format_all,
     archive_read_support_format_ar, archive_read_support_format_by_code,
     archive_read_support_format_cab, archive_read_support_format_cpio,
     archive_read_support_format_empty, archive_read_support_format_iso9660,
     archive_read_support_format_lha, archive_read_support_format_mtree,
     archive_read_support_format_rar, archive_read_support_format_raw,
     archive_read_support_format_tar, archive_read_support_format_xar,
     archive_read_support_format_zip — functions for reading streaming archives

LIBRARY

     Streaming Archive Library (libarchive, -larchive)

SYNOPSIS

     #include <archive.h>

     int
     archive_read_support_format_7zip(struct archive *);

     int
     archive_read_support_format_all(struct archive *);

     int
     archive_read_support_format_ar(struct archive *);

     int
     archive_read_support_format_by_code(struct archive *, int);

     int
     archive_read_support_format_cab(struct archive *);

     int
     archive_read_support_format_cpio(struct archive *);

     int
     archive_read_support_format_empty(struct archive *);

     int
     archive_read_support_format_iso9660(struct archive *);

     int
     archive_read_support_format_lha(struct archive *);

     int
     archive_read_support_format_mtree(struct archive *);

     int
     archive_read_support_format_rar(struct archive *);

     int
     archive_read_support_format_raw(struct archive *);

     int
     archive_read_support_format_tar(struct archive *);

     int
     archive_read_support_format_xar(struct archive *);

     int
     archive_read_support_format_zip(struct archive *);

DESCRIPTION

     archive_read_support_format_7zip(), archive_read_support_format_ar(),
             archive_read_support_format_cab(), archive_read_support_format_cpio(),
             archive_read_support_format_iso9660(), archive_read_support_format_lha(),
             archive_read_support_format_mtree(), archive_read_support_format_rar(),
             archive_read_support_format_raw(), archive_read_support_format_tar(),
             archive_read_support_format_xar(), archive_read_support_format_zip()
             Enables support---including auto-detection code---for the specified archive format.
             For example, 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.
     archive_read_support_format_all()
             Enables support for all available formats except the “raw” format (see below).
     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 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.
     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.
     archive_read_support_format_raw()
             The “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 “data”; all other entry fields are unset.  This is not enabled by
             archive_read_support_format_all() in order to avoid erroneous handling of damaged
             archives.

RETURN VALUES

     These functions return ARCHIVE_OK on success, or ARCHIVE_FATAL.

ERRORS

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

SEE ALSO

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

BUGS

     Many traditional archiver programs treat empty files as valid empty archives.  For example,
     many implementations of 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 “empty” format.

     Using the “raw” handler together with any other handler will often work but can produce
     surprising results.