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NAME

Filter::Util::Exec - exec source filter

SYNOPSIS

    use Filter::Util::Exec;

DESCRIPTION

This module is provides the interface to allow the creation of Source Filters which use a Unix coprocess.

See Filter::exec, Filter::cpp and Filter::sh for examples of the use of this module.

filter_add()

The function, filter_add installs a filter. It takes one parameter which should be a reference. The kind of reference used will dictate which of the two filter types will be used.

If a CODE reference is used then a closure filter will be assumed.

If a CODE reference is not used, a method filter will be assumed. In a method filter, the reference can be used to store context information. The reference will be blessed into the package by filter_add.

See Filter::Util::Call for examples of using context information using both method filters and closure filters.

AUTHOR

Paul Marquess

DATE

11th December 1995.