NAME
archive_read_support_filter_all,
archive_read_support_filter_bzip2,
archive_read_support_filter_compress,
archive_read_support_filter_gzip,
archive_read_support_filter_lz4,
archive_read_support_filter_lzma,
archive_read_support_filter_none,
archive_read_support_filter_rpm,
archive_read_support_filter_uu,
archive_read_support_filter_xz,
archive_read_support_filter_program,
archive_read_support_filter_program_signature —
functions for reading streaming archives
LIBRARY
Streaming Archive Library (libarchive, -larchive)
SYNOPSIS
#include <archive.h>
int
archive_read_support_filter_all(
struct
archive *);
int
archive_read_support_filter_bzip2(
struct
archive *);
int
archive_read_support_filter_compress(
struct
archive *);
int
archive_read_support_filter_grzip(
struct
archive *);
int
archive_read_support_filter_gzip(
struct
archive *);
int
archive_read_support_filter_lrzip(
struct
archive *);
int
archive_read_support_filter_lz4(
struct
archive *);
int
archive_read_support_filter_lzma(
struct
archive *);
int
archive_read_support_filter_lzop(
struct
archive *);
int
archive_read_support_filter_none(
struct
archive *);
int
archive_read_support_filter_rpm(
struct
archive *);
int
archive_read_support_filter_uu(
struct
archive *);
int
archive_read_support_filter_xz(
struct
archive *);
int
archive_read_support_filter_program(
struct
archive *,
const char *cmd);
int
archive_read_support_filter_program_signature(
struct
archive *,
const char *cmd,
const
void *signature,
size_t signature_length);
DESCRIPTION
- archive_read_support_filter_bzip2(),
archive_read_support_filter_compress(),
archive_read_support_filter_grzip(),
archive_read_support_filter_gzip(),
archive_read_support_filter_lrzip(),
archive_read_support_filter_lz4(),
archive_read_support_filter_lzma(),
archive_read_support_filter_lzop(),
archive_read_support_filter_none(),
archive_read_support_filter_rpm(),
archive_read_support_filter_uu(),
archive_read_support_filter_xz()
- Enables auto-detection code and decompression support for
the specified compression. These functions may fall back on external
programs if an appropriate library was not available at build time.
Decompression using an external program is usually slower than
decompression through built-in libraries. Note that “none” is
always enabled by default.
- archive_read_support_filter_all()
- Enables all available decompression filters.
- archive_read_support_filter_program()
- Data is fed through the specified external program before
being dearchived. Note that this disables automatic detection of the
compression format, so it makes no sense to specify this in conjunction
with any other decompression option.
- archive_read_support_filter_program_signature()
- This feeds data through the specified external program but
only if the initial bytes of the data match the specified signature
value.
RETURN VALUES
These functions return
ARCHIVE_OK if the compression is fully
supported,
ARCHIVE_WARN if the compression is supported only
through an external program.
archive_read_support_filter_none() always succeeds.
ERRORS
Detailed error codes and textual descriptions are available from the
archive_errno() and
archive_error_string()
functions.
SEE ALSO
libarchive(3),
archive_read(3),
archive_read_data(3),
archive_read_format(3),
archive_read_format(3)