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ARCHIVE_UTIL(3)		 BSD Library Functions Manual	       ARCHIVE_UTIL(3)

NAME
     archive_clear_error, archive_compression, archive_compression_name,
     archive_copy_error, archive_errno, archive_error_string,
     archive_file_count, archive_format, archive_format_name,
     archive_set_error — libarchive utility functions

SYNOPSIS
     #include <archive.h>

     void
     archive_clear_error(struct archive *);

     int
     archive_compression(struct archive *);

     const char *
     archive_compression_name(struct archive *);

     void
     archive_copy_error(struct archive *, struct archive *);

     int
     archive_errno(struct archive *);

     const char *
     archive_error_string(struct archive *);

     int
     archive_file_count(struct archive *);

     int
     archive_format(struct archive *);

     const char *
     archive_format_name(struct archive *);

     void
     archive_set_error(struct archive *, int error_code, const char *fmt,
	 ...);

DESCRIPTION
     These functions provide access to various information about the struct
     archive object used in the libarchive(3) library.
     archive_clear_error()
	     Clears any error information left over from a previous call.  Not
	     generally used in client code.
     archive_compression()
	     Returns a numeric code indicating the current compression.	 This
	     value is set by archive_read_open().
     archive_compression_name()
	     Returns a text description of the current compression suitable
	     for display.
     archive_copy_error()
	     Copies error information from one archive to another.
     archive_errno()
	     Returns a numeric error code (see errno(2)) indicating the reason
	     for the most recent error return.
     archive_error_string()
	     Returns a textual error message suitable for display.  The error
	     message here is usually more specific than that obtained from
	     passing the result of archive_errno() to strerror(3).
     archive_file_count()
	     Returns a count of the number of files processed by this archive
	     object.  The count is incremented by calls to
	     archive_write_header or archive_read_next_header.
     archive_format()
	     Returns a numeric code indicating the format of the current ar‐
	     chive entry.  This value is set by a successful call to
	     archive_read_next_header().  Note that it is common for this
	     value to change from entry to entry.  For example, a tar archive
	     might have several entries that utilize GNU tar extensions and
	     several entries that do not.  These entries will have different
	     format codes.
     archive_format_name()
	     A textual description of the format of the current entry.
     archive_set_error()
	     Sets the numeric error code and error description that will be
	     returned by archive_errno() and archive_error_string().  This
	     function should be used within I/O callbacks to set system-spe‐
	     cific error codes and error descriptions.	This function accepts
	     a printf-like format string and arguments.	 However, you should
	     be careful to use only the following printf format specifiers:
	     “%c”, “%d”, “%jd”, “%jo”, “%ju”, “%jx”, “%ld”, “%lo”, “%lu”,
	     “%lx”, “%o”, “%u”, “%s”, “%x”, “%%”.  Field-width specifiers and
	     other printf features are not uniformly supported and should not
	     be used.

SEE ALSO
     archive_read(3), archive_write(3), libarchive(3), printf(3)

HISTORY
     The libarchive library first appeared in FreeBSD 5.3.

AUTHORS
     The libarchive library was written by Tim Kientzle ⟨kientzle@acm.org⟩.

BSD				January 8, 2005				   BSD
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