nathanburkett/mesa

Table-Driven Data Interpretation

0.3.0 2019-03-24 02:03 UTC

Requires

• php: ^7.1
• ext-json: *
• symfony/yaml: ^4.2

Requires (Dev)

• infection/infection: ^0.9
• phpmd/phpmd: ^2.6
• phpstan/phpstan: ^0.11.1
• phpunit/phpunit: ^7.5
• squizlabs/php_codesniffer: ^3.4

MIT

• NathanBurkett

• generator
• phpunit
• generation
• table
• testcase
• tabular
• mesa

README

Mesa is a programmatic table builder and/or interpreter.

Installation

composer require nathanburkett/mesa

Usage

Via GeneratesTables Trait

Using the GeneratesTables trait is the simplest way to start consuming tables.

<?php namespace Foo\Bar\Baz;

use NathanBurkett\Mesa\GeneratesTables;

class FooClass
{
    use GeneratesTables;
}

Then build a table by calling:

<?php namespace Foo\Bar\Baz;

use NathanBurkett\Mesa\GeneratesTables;

class FooClass
{
    use GeneratesTables;
    
    public function run(): iterable
    {
        $tableContext = __DIR__ . '/some/php/file.php';

        return $this->generateTable($tableContext);
    } 
}

$tableContext is the data source the table is interpreting.

An optional callable can be passed to generateTable as the 2nd parameter which will be run on each of the table iteration's value and will replace that value.

Example:

<?php
// ./some/php/file.php

return [
    'one' => [
        'name' => 'foo',
    ],
    'two' => [
        'name' => 'bar',
    ],
];

<?php namespace Foo\Bar\Baz;

use NathanBurkett\Mesa\GeneratesTables;

class FooClass
{
    use GeneratesTables;
    
    public function run(): iterable
    {
        $tableContext = __DIR__ . '/some/php/file.php'; // THIS IS WHERE $tableContext COMES FROM

        return $this->generateTable($tableContext, function(array $row, $index) {
            if ($index === 'two') {
                $row['name'] = 'baz';
            }
            
            return $row;
        });
    } 
}

In the above example, $table['two']['name'] would equal 'baz'.

Loaders

The current default behavior of $tableContext passed as the first parameter to GeneratesTables::generateTable() is intended to be an absolute path to a PHP or YAML file. Anything else and FileLoaderFactory will throw an exception.

Other types can be interpreted by extending LoaderFactory and overridding any of the methods and then overriding the GeneratesTables::getLoaderFactory()

<?php namespace Foo\Bar\Baz;

use NathanBurkett\Mesa\GeneratesTables;
use NathanBurkett\Mesa\Loader\LoaderFactoryInterface;

class FooClass
{
    use GeneratesTables;
    
    // ...
    
    protected function getLoaderFactory(): LoaderFactoryInterface
    {
        return new YourNewFactoryLoader();
    }
}

Output

Once data has been read into a table, it will then be output by an OutputStrategy. The default OutputStrategy iterates over the table and yields an index and value via a generator function.

An optional callable can be passed as the 2nd parameter which will be run on each iteration's value and replace that iteration value.

An optional callable can be passed to generateTable as the 2nd parameter which will be run on each of the table iteration's value and will replace that value.

Example:

<?php
// ./some/php/file.php

return [
    'one' => [
        'name' => 'foo',
    ],
    'two' => [
        'name' => 'bar',
    ],
];

<?php namespace Foo\Bar\Baz;

use NathanBurkett\Mesa\GeneratesTables;

class FooClass
{
    use GeneratesTables;
    
    public function run(): iterable
    {
        $tableContext = __DIR__ . '/some/php/file.php'; // THIS IS WHERE $tableContext COMES FROM

        return $this->generateTable($tableContext, function(array $row, $index) {
            if ($index === 'two') {
                $row['name'] = 'baz';
            }
            
            return $row;
        });
    } 
}

In the above example, $table['two']['name'] would equal 'baz'.

An alternate OutputStrategy can be used by overriding GeneratesTables::getOutputStrategy()