NAME
App::Greple::tee - module to replace matched text by the external command result
SYNOPSIS
greple -Mtee command -- ...DESCRIPTION
Greple's -Mtee module sends matched text part to the given filter command, and replace them by the command result. The idea is derived from the command called teip. It is like bypassing partial data to the external filter command.
Filter command follows module declaration (-Mtee) and terminates by two dashes (--). For example, next command call command tr command with a-z A-Z arguments for the matched word in the data.
greple -Mtee tr a-z A-Z -- '\w+' ...Above command convert all matched words from lower-case to upper-case. Actually this example itself is not so useful because greple can do the same thing more effectively with --cm option.
By default, the command is executed as a single process, and all matched data is sent to it mixed together. If the matched text does not end with newline, it is added before and removed after. Data are mapped line by line, so the number of lines of input and output data must be identical.
Using --discrete option, individual command is called for each matched part. You can tell the difference by following commands.
greple -Mtee cat -n -- copyright LICENSE
greple -Mtee cat -n -- copyright LICENSE --discreteLines of input and output data do not have to be identical when used with --discrete option.
OPTIONS
WHY DO NOT USE TEIP
First of all, whenever you can do it with the teip command, use it. It is an excellent tool and much faster than greple.
Because greple is designed to process document files, it has many features that are appropriate for it, such as match area controls. It might be worth using greple to take advantage of those features.
Also, teip cannot handle multiple lines of data as a single unit, while greple can execute individual commands on a data chunk consisting of multiple lines.
EXAMPLE
Next command will find text blocks inside perlpod(1) style document included in Perl module file.
greple --inside '^=(?s:.*?)(^=cut|\z)' --re '^(\w.+\n)+' tee.pmYou can translate them by DeepL service by executing the above command convined with -Mtee module which calls deepl command like this:
greple -Mtee deepl text --to JA - -- --discrete ...Because deepl works better for single line input, you can change command part as this:
sh -c 'perl -00pE "s/\s+/ /g" | deepl text --to JA -'The dedicated module App::Greple::xlate::deepl is more effective for this purpose, though. In fact, the implementation hint of tee module came from xlate module.
EXAMPLE 2
Next command will find some indented part in LICENSE document.
greple --re '^[ ]{2}[a-z][)] .+\n([ ]{5}.+\n)*' -C LICENSE
a) distribute a Standard Version of the executables and library files,
together with instructions (in the manual page or equivalent) on where to
get the Standard Version.
b) accompany the distribution with the machine-readable source of the Package
with your modifications.
You can reformat this part by using tee module with ansifold command:
greple -Mtee ansifold -rsw40 --prefix ' ' -- --discrete --re ...
a) distribute a Standard Version of
the executables and library files,
together with instructions (in the
manual page or equivalent) on where
to get the Standard Version.
b) accompany the distribution with the
machine-readable source of the
Package with your modifications.
INSTALL
CPANMINUS
$ cpanm App::Greple::teeSEE ALSO
App::Greple::tee, https://github.com/kaz-utashiro/App-Greple-tee
https://github.com/greymd/teip
App::Greple, https://github.com/kaz-utashiro/greple
https://github.com/tecolicom/Greple
AUTHOR
Kazumasa Utashiro
LICENSE
Copyright © 2023 Kazumasa Utashiro.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.