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archive_compression, archive_compression_name, archive_errno, archive_error_string, archive_format, archive_format_name, archive_set_error - libarchive utility functions


See Also


.In archive.h int archive_compression "struct archive *" const char * archive_compression_name "struct archive *" int archive_errno "struct archive *" const char * archive_error_string "struct archive *" int archive_format "struct archive *" const char * archive_format_name "struct archive *" int archive_set_error "struct archive *" "int error_code" "const char *fmt" "..."


These functions provide access to various information about the struct archive object used in the libarchive(3) library.
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_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_format Returns a numeric code indicating the format of the current archive 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-specific 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.


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



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