...There is also a non‐standard mode that encodes a group of four consecutive ASCII SPACE characters as a single ‘y’ character, and omits the ‘~>’ EOD marker. Please note that this module is written in pure Perl, and is as such very slow. A better alternative is to use the MPPerl::Convert::ASCII85::XS module, in which the most time-critical code has been written in C. It can be found at https://sourceforge.net/projects/mpperl-convert-ascii85-xs/.
This module provides functions for conversion between binary data and ASCII base-85 encoded text as described by Adobe in the PostScript Language Reference. There is also a non‐standard mode that encodes a group of four consecutive ASCII SPACE characters as a single ‘y’ character, and omits the ‘~>’ EOD marker.
Convert between binary data and ASCII base-85 encoded text
This package consists of two command-line utilities and an accompanying Perl module that let you convert between binary data and ASCII base-85 encoded text as specified by Adobe in the PostScript Language Reference. There is also a C version available; please see the C/ directory in the Files section.