FixedWidth

A simple library to read and write fixed width file. It's a partial port from this python library, with the aim to be simple, stable and consistent.

Install

Via Composer

$ composer require axelero/fixed-width

Usage

You can read values from arbitrary strings:

$config = [
'a' => [
    'type' => 'string',
    'start' => 3,
    'length' => 10
],
// numeric indexes of the config array will be ignored
[
    'type' => 'string',
    'start' => 13,
    'end' => 13
],
'b' => [
    'type' => 'string',
    'start' => 14,
    'end' => 17
]
];

$obj = new FixedWidth($config);

$line = '12345678901234567890';
$record = $obj->readLine($line); // ['a' => '3456789012','b' => '4567',]

You can write arrays into fixed-width strings:

$config = [
    'a' => [
        'type' => 'string',
        'start' => 1,
        'end' => 5
    ],
    'b' => [
        'type' => 'integer',
        'start' => 6,
        'end' => 10
    ]
];

$obj = new FixedWidth($config);

$data = ['a' => 'xxx', 'b' => 42];
$string = $obj->writeLine($data); // 'xxx  00042'

The possible configuration values for each field are:

• type: string|integer
• alignment: left|right (defaults to left for string, right for integers)
• padding: charachter to use to fill the missing space (defaults to '' for string, '0' for integers)
• default: what to write when an array field is missing (defaults to '' for string, '0' for integers)

Testing

$ phpunit

Contributing

You are welcome to send any PR. Please make sure the tests pass. Please try to keep the code PSR compliant (in the root of the project lies a .php_cs config file for that).

Credits

• axélero
• All Contributors

License

The MIT License (MIT). Please see License File for more information.