Help language development. Donate to The Perl Foundation

Term::Form cpan:KUERBIS last updated on 2019-04-02

Term-Form-p6-1.2.0/

Build Status

NAME

Term::Form - Read lines from STDIN.

SYNOPSIS

use Term::Form :readline, :fill-form;

my @aoa = (
    [ 'name'           ],
    [ 'year'           ],
    [ 'color', 'green' ],
    [ 'city'           ]
);


# Functional interface:

my $line = readline( 'Prompt: ', default<abc> );

my @filled_form = fill-form( @aoa, :auto-up( 0 ) );


# OO interface:

my $new = Term::Form.new();

$line = $new.readline( 'Prompt: ', :default<abc> );

@filled_form = $new.fill-form( @aoa, :auto-up( 0 ) );

DESCRIPTION

readline reads a line from STDIN. As soon as Return is pressed readline returns the read string without the newline character - so no chomp is required.

fill-form reads a list of lines from STDIN.

Keys

BackSpace or Ctrl-H: Delete the character behind the cursor.

Delete or Ctrl-D: Delete the character at point.

Ctrl-U: Delete the text backward from the cursor to the beginning of the line.

Ctrl-K: Delete the text from the cursor to the end of the line.

Right-Arrow: Move forward a character.

Left-Arrow: Move back a character.

Home or Ctrl-A: Move to the start of the line.

End or Ctrl-E: Move to the end of the line.

Up-Arrow:

Down-Arrow:

Only in readline:

Ctrl-X: readline returns nothing (undef).

Only in fill-form:

Page-Up or Ctrl-B: Move back one page.

Page-Down or Ctrl-F: Move forward one page.

METHODS

new

The new method returns a Term::Form object.

my $new = Term::Form.new();

new can be called with named arguments. For the valid options see OPTIONS. Setting the options in new overwrites the default values for the instance.

readline

readline reads a line from STDIN.

my $line = $new.readline( $prompt, $default );

or

my $line = $new.readline( $prompt, :$default, :$no-echo, ... );

The fist argument is the prompt string.

With the following arguments one can set the different options or instead it can be passed the default value (see option default) as a string.

0 - off (default)

1 - clear the screen before printing the choices

2 - use the alternate screen (uses the control sequence 1049)

default: disabled

Expects as is value a string. If set, the string is printed on top of the output of readline.

Set a initial value of input.

0 - the input is echoed on the screen

1 - "*" are displayed instead of the characters

2 - no output is shown apart from the prompt string

default: 0

Display the input that does not fit into the "readline" before or after the "readline".

0 - disable show-context

1 - enable show-context

default: 0

fill-form

fill-form reads a list of lines from STDIN.

my $new_list = $new.fill-form( @aoa, :1auto-up, ... );

The first argument is an array of arrays. The arrays have 1 or 2 elements: the first element is the key and the optional second element is the value. The key is used as the prompt string for the "readline", the value is used as the default value for the "readline" (initial value of input).

The first argument can be followed by the different options:

0 - off (default)

1 - clear the screen before printing the choices

2 - use the alternate screen (uses the control sequence 1049)

default: disabled

Hide the cursor (0 or 1).

default: enabled

Expects as is value a string. If set, the string is printed on top of the output of fill-form.

default: nothing

If prompt is set, a main prompt string is shown on top of the output.

default: nothing

With auto-up set to 0 or 1 pressing ENTER moves the cursor to the next line (if the cursor is not on the "back" or "confirm" row). If the last row is reached, the cursor jumps to the first data row if ENTER is pressed. While with auto-up set to 0 the cursor loops through the rows until a key other than ENTER is pressed with auto-up set to 1 after one loop an ENTER moves the cursor to the top menu entry ("back") if no other key than ENTER was pressed.

With auto-up set to 2 an ENTER moves the cursor to the top menu entry (except the cursor is on the "confirm" row).

If auto-up is set to 0 or 1 the initially cursor position is on the first data row while when set to 2 the initially cursor position is on the first menu entry ("back").

default: 1

Set a form-row to read only.

Expected value: a reference to an array with the indexes of the rows which should be read only.

default: empty array

Set the name of the "confirm" menu entry.

default: Confirm

Set the name of the "back" menu entry.

The "back" menu entry can be disabled by setting back to an empty string.

default: Back

To close the form and get the modified list select the "confirm" menu entry. If the "back" menu entry is chosen to close the form, fill-form returns nothing.

REQUIREMENTS

See Term::Choose#REQUIREMENTS.

AUTHOR

Matthäus Kiem cuer2s@gmail.com

CREDITS

Thanks to the people from Perl-Community.de, from stackoverflow for the help.

LICENSE AND COPYRIGHT

Copyright (C) 2016-2019 Matthäus Kiem.

This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.