IPC::Filter - filter data through an external process
use IPC::Filter qw(filter); $compressed_data = filter($data, "bzip2");
filter function provided by this module passes data through an external command, thus providing filtering in non-pipeline situations.
- filter(DATA, SHELL_COMMAND)
- filter(DATA, PROGRAM, ARGS ...)
The SHELL_COMMAND, or the PROGRAM with ARGS if more arguments are supplied, is executed as a separate process. (The arguments other than DATA are ultimately passed to
exec; see "exec" in perlfunc(1) for explanation of the choice between the two forms.) The DATA (which must be either a simple string or a reference to a string) is supplied to the process on its standard input, and the process's standard output is captured and returned (as a simple string).
If the process exits with a non-zero exit code or on a signal, the function will
die. In the case of a non-zero exit code, the
diemessage will duplicate the process's standard error output; in any other case, the error output is discarded.
Andrew Main (Zefram) <firstname.lastname@example.org>
Copyright (C) 2004, 2007, 2010, 2011 Andrew Main (Zefram) <email@example.com>
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.