FormatterManager::addSimplifier() - Code Metrics - Inspection of "Xml formatter" - consolidation/output-formatters - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#21)

by Greg

created 2016-05-19 17:28 UTC

FormatterManager::addSimplifier() A

↳ Parent: FormatterManager

Complexity

Conditions	1
Paths	1

Size

Total Lines	5
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	1
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	5
ccs	1
cts	1
cp	1
rs	9.4285
cc	1
eloc	3
nc	1
nop	1
crap	1

<?php
namespace Consolidation\OutputFormatters;

use Symfony\Component\Console\Output\OutputInterface;
use Consolidation\OutputFormatters\Exception\UnknownFormatException;
use Consolidation\OutputFormatters\Formatters\RenderDataInterface;
use Consolidation\OutputFormatters\Exception\IncompatibleDataException;
use Consolidation\OutputFormatters\Transformations\DomToArraySimplifier;
use Consolidation\OutputFormatters\StructuredData\RestructureInterface;

/**
 * Manage a collection of formatters; return one on request.
 */
class FormatterManager
{
    protected $formatters = [];
    protected $arraySimplifiers = [];

    public function __construct()
    {
        $this->formatters = [
            'string' => '\Consolidation\OutputFormatters\Formatters\StringFormatter',
            'yaml' => '\Consolidation\OutputFormatters\Formatters\YamlFormatter',
            'xml' => '\Consolidation\OutputFormatters\Formatters\XmlFormatter',
            'json' => '\Consolidation\OutputFormatters\Formatters\JsonFormatter',
            'print-r' => '\Consolidation\OutputFormatters\Formatters\PrintRFormatter',
            'php' => '\Consolidation\OutputFormatters\Formatters\SerializeFormatter',
            'var_export' => '\Consolidation\OutputFormatters\Formatters\VarExportFormatter',
            'list' => '\Consolidation\OutputFormatters\Formatters\ListFormatter',
            'csv' => '\Consolidation\OutputFormatters\Formatters\CsvFormatter',
            'table' => '\Consolidation\OutputFormatters\Formatters\TableFormatter',
            'sections' => '\Consolidation\OutputFormatters\Formatters\SectionsFormatter',
        ];

        $this->arraySimplifiers = [
            new DomToArraySimplifier(),
        ];

        // Make the empty format an alias for the 'string' formatter.
        $this->add('', $this->formatters['string']);
    }

    /**
     * Add a formatter
     *
     * @param string $key the identifier of the formatter to add
     * @param string $formatterClassname the class name of the formatter to add
     * @return FormatterManager
     */
    public function add($key, $formatterClassname)
    {
        $this->formatters[$key] = $formatterClassname;
        return $this;
    }

    /**
     * Add a simplifier
     *
     * @param SimplifyToArrayInterface $simplifier the array simplifier to add
     * @return FormatterManager
     */
    public function addSimplifier(SimplifyToArrayInterface $simplifier)
    {
        $this->arraySimplifiers[] = $simplifier;
        return $this;
    }

    /**
     * Return the identifiers for all valid data types that have been registered.
     *
     * @param mixed $dataType \ReflectionObject or other description of the produced data type
     * @return array
     */
    public function validFormats($dataType)
    {
        $validFormats = [];
        foreach ($this->formatters as $formatId => $formatterName) {
            $formatter = $this->getFormatter($formatId);
            if ($this->isValidFormat($formatter, $dataType)) {
                $validFormats[] = $formatId;
            }
        }
        sort($validFormats);
        return $validFormats;
    }

    public function isValidFormat(FormatterInterface $formatter, $dataType)
    {
        if (is_array($dataType)) {
            $dataType = new \ReflectionClass('\ArrayObject');
        }
        if (!$dataType instanceof \ReflectionClass) {
            $dataType = new \ReflectionClass($dataType);
        }
        // If the formatter does not implement ValidationInterface, then
        // it is presumed that the formatter only accepts arrays.
        if (!$formatter instanceof ValidationInterface) {
            return $dataType->isSubclassOf('ArrayObject') || ($dataType->getName() == 'ArrayObject');
        }
        $supportedTypes = $formatter->validDataTypes();
        foreach ($supportedTypes as $supportedType) {
            if (($dataType->getName() == $supportedType->getName()) || $dataType->isSubclassOf($supportedType->getName())) {
                return true;
            }
        }
        return false;
    }

    /**
     * Format and write output
     *
     * @param OutputInterface $output Output stream to write to
     * @param string $format Data format to output in
     * @param mixed $structuredOutput Data to output
     * @param FormatterOptions $options Formatting options
     */
    public function write(OutputInterface $output, $format, $structuredOutput, FormatterOptions $options)
    {
        $formatter = $this->getFormatter((string)$format);
        $structuredOutput = $this->validateAndRestructure($formatter, $structuredOutput, $options);
        $formatter->write($output, $structuredOutput, $options);
    }

    protected function validateAndRestructure(FormatterInterface $formatter, $structuredOutput, FormatterOptions $options)
    {
        // Give the formatter a chance to do something with the
        // raw data before it is restructured.
        $overrideRestructure = $this->overrideRestructure($formatter, $structuredOutput, $options);
        if ($overrideRestructure) {
            return $overrideRestructure;
        }

        // Restructure the output data (e.g. select fields to display, etc.).
        $restructuredOutput = $this->restructureData($structuredOutput, $options);

        // Make sure that the provided data is in the correct format for the selected formatter.
        $restructuredOutput = $this->validateData($formatter, $restructuredOutput, $options);

        // Give the original data a chance to re-render the structured
        // output after it has been restructured and validated.
        $restructuredOutput = $this->renderData($formatter, $structuredOutput, $restructuredOutput, $options);

        return $restructuredOutput;
    }

    /**
     * Fetch the requested formatter.
     *
     * @param string $format Identifier for requested formatter
     * @return FormatterInterface
     */
    public function getFormatter($format)
    {
        if (!$this->hasFormatter($format)) {
            throw new UnknownFormatException($format);
        }
        $formatter = new $this->formatters[$format];
        return $formatter;
    }

    /**
     * Test to see if the stipulated format exists
     */
    public function hasFormatter($format)
    {
        return array_key_exists($format, $this->formatters);
    }

    /**
     * Render the data as necessary (e.g. to select or reorder fields).
     *
     * @param FormatterInterface $formatter
     * @param mixed $originalData
     * @param mixed $restructuredData
     * @param FormatterOptions $options Formatting options
     * @return mixed
     */
    public function renderData(FormatterInterface $formatter, $originalData, $restructuredData, FormatterOptions $options)
    {
        if ($formatter instanceof RenderDataInterface) {
            return $formatter->renderData($originalData, $restructuredData, $options);
        }
        return $restructuredData;
    }

    /**
     * Determine if the provided data is compatible with the formatter being used.
     *
     * @param FormatterInterface $formatter Formatter being used
     * @param mixed $structuredOutput Data to validate
     * @return mixed
     */
    public function validateData(FormatterInterface $formatter, $structuredOutput, FormatterOptions $options)
    {
        // If the formatter implements ValidationInterface, then let it
        // test the data and throw or return an error
        if ($formatter instanceof ValidationInterface) {
            return $formatter->validate($structuredOutput);
        }
        // If the formatter does not implement ValidationInterface, then
        // it will never be passed an ArrayObject; we will always give
        // it a simple array.
        $structuredOutput = $this->simplifyToArray($structuredOutput, $options);
        // If we could not simplify to an array, then throw an exception.
        // We will never give a formatter anything other than an array
        // unless it validates that it can accept the data type.
        if (!is_array($structuredOutput)) {
            throw new IncompatibleDataException(
                $formatter,
                $structuredOutput,
                []
            );
        }
        return $structuredOutput;
    }

    protected function simplifyToArray($structuredOutput, FormatterOptions $options)
    {
        // Check to see if any of the simplifiers can convert the given data
        // set to an array.
        foreach ($this->arraySimplifiers as $simplifier) {
            $structuredOutput = $simplifier->simplifyToArray($structuredOutput, $options);
        }
        // Convert \ArrayObjects to a simple array.
        if ($structuredOutput instanceof \ArrayObject) {
            return $structuredOutput->getArrayCopy();
        }
        return $structuredOutput;
    }

    /**
     * Restructure the data as necessary (e.g. to select or reorder fields).
     *
     * @param mixed $structuredOutput
     * @param FormatterOptions $options
     * @return mixed
     */
    public function restructureData($structuredOutput, FormatterOptions $options)
    {
        if ($structuredOutput instanceof RestructureInterface) {
            return $structuredOutput->restructure($options);
        }
        return $structuredOutput;
    }

    /**
     * Allow the formatter access to the raw structured data prior
     * to restructuring.  For example, the 'list' formatter may wish
     * to display the row keys when provided table output.  If this
     * function returns a result that does not evaluate to 'false',
     * then that result will be used as-is, and restructuring and
     * validation will not occur.
     *
     * @param mixed $structuredOutput
     * @param FormatterOptions $options
     * @return mixed
     */
    public function overrideRestructure(FormatterInterface $formatter, $structuredOutput, FormatterOptions $options)
    {
        if ($formatter instanceof OverrideRestructureInterface) {
            return $formatter->overrideRestructure($structuredOutput, $options);
        }
    }
}


1		<?php
2		namespace Consolidation\OutputFormatters;
3
4		use Symfony\Component\Console\Output\OutputInterface;
5		use Consolidation\OutputFormatters\Exception\UnknownFormatException;
6		use Consolidation\OutputFormatters\Formatters\RenderDataInterface;
7		use Consolidation\OutputFormatters\Exception\IncompatibleDataException;
8		use Consolidation\OutputFormatters\Transformations\DomToArraySimplifier;
9		use Consolidation\OutputFormatters\StructuredData\RestructureInterface;
10
11		/**
12		* Manage a collection of formatters; return one on request.
13		*/
14		class FormatterManager
15		{
16	28	protected $formatters = [];
17		protected $arraySimplifiers = [];
18	28
19	28	public function __construct()
20	28	{
21	28	$this->formatters = [
22	28	'string' => '\Consolidation\OutputFormatters\Formatters\StringFormatter',
23	28	'yaml' => '\Consolidation\OutputFormatters\Formatters\YamlFormatter',
24	28	'xml' => '\Consolidation\OutputFormatters\Formatters\XmlFormatter',
25	28	'json' => '\Consolidation\OutputFormatters\Formatters\JsonFormatter',
26	28	'print-r' => '\Consolidation\OutputFormatters\Formatters\PrintRFormatter',
27	28	'php' => '\Consolidation\OutputFormatters\Formatters\SerializeFormatter',
28		'var_export' => '\Consolidation\OutputFormatters\Formatters\VarExportFormatter',
29		'list' => '\Consolidation\OutputFormatters\Formatters\ListFormatter',
30		'csv' => '\Consolidation\OutputFormatters\Formatters\CsvFormatter',
31	28	'table' => '\Consolidation\OutputFormatters\Formatters\TableFormatter',
32	28	'sections' => '\Consolidation\OutputFormatters\Formatters\SectionsFormatter',
33		];
34
35		$this->arraySimplifiers = [
36		new DomToArraySimplifier(),
37		];
38
39		// Make the empty format an alias for the 'string' formatter.
40		$this->add('', $this->formatters['string']);
41		}
42
43	28	/**
44		* Add a formatter
45	28	*
46	27	* @param string $key the identifier of the formatter to add
47	24	* @param string $formatterClassname the class name of the formatter to add
48	24	* @return FormatterManager
49		*/
50	27	public function add($key, $formatterClassname)
51		{
52		$this->formatters[$key] = $formatterClassname;
53		return $this;
54	27	}
55	27
56	4	/**
57		* Add a simplifier
58		*
59		* @param SimplifyToArrayInterface $simplifier the array simplifier to add
60	27	* @return FormatterManager
61		*/
62		public function addSimplifier(SimplifyToArrayInterface $simplifier)
63	27	{
64		$this->arraySimplifiers[] = $simplifier;
65		return $this;
66		}
67	24
68		/**
69	24	* Return the identifiers for all valid data types that have been registered.
70		*
71		* @param mixed $dataType \ReflectionObject or other description of the produced data type
72		* @return array
73		*/
74		public function validFormats($dataType)
75		{
76		$validFormats = [];
77		foreach ($this->formatters as $formatId => $formatterName) {
78		$formatter = $this->getFormatter($formatId);
79	28	if ($this->isValidFormat($formatter, $dataType)) {
80		$validFormats[] = $formatId;
81	28	}
82	1	}
83		sort($validFormats);
84		return $validFormats;
85	27	}
86	27
87	9	public function isValidFormat(FormatterInterface $formatter, $dataType)
88	9	{
89	27	if (is_array($dataType)) {
90		$dataType = new \ReflectionClass('\ArrayObject');
91		}
92	28	if (!$dataType instanceof \ReflectionClass) {
93		$dataType = new \ReflectionClass($dataType);
94	28	}
95		// If the formatter does not implement ValidationInterface, then
96		// it is presumed that the formatter only accepts arrays.
97		if (!$formatter instanceof ValidationInterface) {
98		return $dataType->isSubclassOf('ArrayObject') \|\| ($dataType->getName() == 'ArrayObject');
99		}
100		$supportedTypes = $formatter->validDataTypes();
101		foreach ($supportedTypes as $supportedType) {
102		if (($dataType->getName() == $supportedType->getName()) \|\| $dataType->isSubclassOf($supportedType->getName())) {
103		return true;
104		}
105		}
106		return false;
107	24	}
108
109	24	/**
110	14	* Format and write output
111		*
112	14	* @param OutputInterface $output Output stream to write to
113		* @param string $format Data format to output in
114		* @param mixed $structuredOutput Data to output
115		* @param FormatterOptions $options Formatting options
116		*/
117		public function write(OutputInterface $output, $format, $structuredOutput, FormatterOptions $options)
118		{
119		$formatter = $this->getFormatter((string)$format);
120		$structuredOutput = $this->validateAndRestructure($formatter, $structuredOutput, $options);
121		$formatter->write($output, $structuredOutput, $options);
122	27	}
123
124		protected function validateAndRestructure(FormatterInterface $formatter, $structuredOutput, FormatterOptions $options)
125		{
126	27	// Give the formatter a chance to do something with the
127	16	// raw data before it is restructured.
128		$overrideRestructure = $this->overrideRestructure($formatter, $structuredOutput, $options);
129		if ($overrideRestructure) {
130		return $overrideRestructure;
131		}
132	15
133	4	// Restructure the output data (e.g. select fields to display, etc.).
134		$restructuredOutput = $this->restructureData($structuredOutput, $options);
135
136	11	// Make sure that the provided data is in the correct format for the selected formatter.
137		$restructuredOutput = $this->validateData($formatter, $restructuredOutput, $options);
138
139		// Give the original data a chance to re-render the structured
140		// output after it has been restructured and validated.
141		$restructuredOutput = $this->renderData($formatter, $structuredOutput, $restructuredOutput, $options);
142
143		return $restructuredOutput;
144		}
145
146		/**
147	27	* Fetch the requested formatter.
148		*
149	27	* @param string $format Identifier for requested formatter
150	7	* @return FormatterInterface
151		*/
152	20	public function getFormatter($format)
153		{
154		if (!$this->hasFormatter($format)) {
155		throw new UnknownFormatException($format);
156		}
157		$formatter = new $this->formatters[$format];
158		return $formatter;
159		}
160
161		/**
162		* Test to see if the stipulated format exists
163		*/
164		public function hasFormatter($format)
165		{
166		return array_key_exists($format, $this->formatters);
167		}
168	27
169		/**
170	27	* Render the data as necessary (e.g. to select or reorder fields).
171	5	*
172		* @param FormatterInterface $formatter
173	26	* @param mixed $originalData
174		* @param mixed $restructuredData
175		* @param FormatterOptions $options Formatting options
176		* @return mixed
177		*/
178		public function renderData(FormatterInterface $formatter, $originalData, $restructuredData, FormatterOptions $options)
179		{
180		if ($formatter instanceof RenderDataInterface) {
181		return $formatter->renderData($originalData, $restructuredData, $options);
182		}
183		return $restructuredData;
184		}
185
186		/**
187		* Determine if the provided data is compatible with the formatter being used.
188		*
189		* @param FormatterInterface $formatter Formatter being used
190		* @param mixed $structuredOutput Data to validate
191		* @return mixed
192		*/
193		public function validateData(FormatterInterface $formatter, $structuredOutput, FormatterOptions $options)
194		{
195		// If the formatter implements ValidationInterface, then let it
196		// test the data and throw or return an error
197		if ($formatter instanceof ValidationInterface) {
198		return $formatter->validate($structuredOutput);
199		}
200		// If the formatter does not implement ValidationInterface, then
201		// it will never be passed an ArrayObject; we will always give
202		// it a simple array.
203		$structuredOutput = $this->simplifyToArray($structuredOutput, $options);
204		// If we could not simplify to an array, then throw an exception.
205		// We will never give a formatter anything other than an array
206		// unless it validates that it can accept the data type.
207		if (!is_array($structuredOutput)) {
208		throw new IncompatibleDataException(
209		$formatter,
210		$structuredOutput,
211		[]
212		);
213		}
214		return $structuredOutput;
215		}
216
217		protected function simplifyToArray($structuredOutput, FormatterOptions $options)
218		{
219		// Check to see if any of the simplifiers can convert the given data
220		// set to an array.
221		foreach ($this->arraySimplifiers as $simplifier) {
222		$structuredOutput = $simplifier->simplifyToArray($structuredOutput, $options);
223		}
224		// Convert \ArrayObjects to a simple array.
225		if ($structuredOutput instanceof \ArrayObject) {
226		return $structuredOutput->getArrayCopy();
227		}
228		return $structuredOutput;
229		}
230
231		/**
232		* Restructure the data as necessary (e.g. to select or reorder fields).
233		*
234		* @param mixed $structuredOutput
235		* @param FormatterOptions $options
236		* @return mixed
237		*/
238		public function restructureData($structuredOutput, FormatterOptions $options)
239		{
240		if ($structuredOutput instanceof RestructureInterface) {
241		return $structuredOutput->restructure($options);
242		}
243		return $structuredOutput;
244		}
245
246		/**
247		* Allow the formatter access to the raw structured data prior
248		* to restructuring. For example, the 'list' formatter may wish
249		* to display the row keys when provided table output. If this
250		* function returns a result that does not evaluate to 'false',
251		* then that result will be used as-is, and restructuring and
252		* validation will not occur.
253		*
254		* @param mixed $structuredOutput
255		* @param FormatterOptions $options
256		* @return mixed
257		*/
258		public function overrideRestructure(FormatterInterface $formatter, $structuredOutput, FormatterOptions $options)
259		{
260		if ($formatter instanceof OverrideRestructureInterface) {
261		return $formatter->overrideRestructure($structuredOutput, $options);
262		}
263		}
264		}
265

consolidation / output-formatters

Pull Request — master (#21)

FormatterManager::addSimplifier() A

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