NAME

Term::Form - Read lines from STDIN.

VERSION

Version 0.503

SYNOPSIS

    use Term::Form;

    my $new = Term::Form->new( 'name' );
    my $line = $new->readline( 'Prompt: ', { default => 'abc' } );


    my $aoa = [
        [ 'name'           ],
        [ 'year'           ],
        [ 'color', 'green' ],
        [ 'city'           ]
    ];
    my $modified_list = $new->fill_form( $aoa );

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.

This module is intended to cope with Unicode (multibyte character/grapheme cluster).

The output is removed after leaving the method, so the user can decide what remains on the screen.

Keys

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

Delete or Strg-D: Delete the character at point. readline returns nothing if Strg-D was pressed and the input puffer is empty.

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

Strg-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 Strg-A: Move to the start of the line.

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

Only in fill_form:

Up-Arrow: Move up one row.

Down-Arrow: Move down one row.

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

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

METHODS

new

The new method returns a Term::Form object.

    my $new = Term::Form->new();

readline

readline reads a line from STDIN.

    $line = $new->readline( $prompt, [ \%options ] );

The fist argument is the prompt string.

The optional second argument is the default string (see option default) if it is not a reference. If the second argument is a hash-reference, the hash is used to set the different options. The keys/options are

  • clear_screen

    If enabled, the screen is cleared before the output.

    default: disabled

  • info

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

  • default

    Set a initial value of input.

  • no_echo

    - if set to 0, the input is echoed on the screen.

    - if set to 1, "*" are displayed instead of the characters.

    - if set to 2, no output is shown apart from the prompt string.

    default: 0

fill_form

fill_form reads a list of lines from STDIN.

    $new_list = $new->fill_form( $aoa, { prompt => 'Required:' } );

The first argument is a reference to 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 optional second argument is a hash-reference. The keys/options are

  • clear_screen

    If enabled, the screen is cleared before the output.

    default: disabled

  • info

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

  • prompt

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

    default: undefined

  • auto_up

    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

  • clear_screen

    If enabled, the screen is cleared before the output.

    default: disabled

  • read_only

    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

  • confirm

    Set the name of the "confirm" menu entry.

    default: Confirm

  • back

    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 (reference to an array or arrays) as the return value select the "confirm" menu entry. If the "back" menu entry is chosen to close the form, fill_form returns nothing.

REQUIREMENTS

Perl version

Requires Perl version 5.8.3 or greater.

Terminal

It is required a terminal which uses a monospaced font.

Unless the OS is MSWin32 the terminal has to understand ANSI escape sequences.

Encoding layer

It is required to use appropriate I/O encoding layers. If the encoding layer for STDIN doesn't match the terminal's character set, readline will break if a non ascii character is entered.

SUPPORT

You can find documentation for this module with the perldoc command.

    perldoc Term::Form

AUTHOR

Matthäus Kiem <cuer2s@gmail.com>

CREDITS

Thanks to the Perl-Community.de and the people form stackoverflow for the help.

LICENSE AND COPYRIGHT

Copyright 2014-2018 Matthäus Kiem.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl 5.10.0. For details, see the full text of the licenses in the file LICENSE.