StyleHelper::extractRelevantInfo() - Code Metrics - Inspection of "Fix tests on Windows" - box/spout - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — fix_windows_test ( db6202...c04b37 )

by Adrien

created 2016-08-10 17:47 UTC

StyleHelper::extractRelevantInfo() B

↳ Parent: StyleHelper

Complexity

Conditions	5
Paths	5

Size

Total Lines	20
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	15
CRAP Score	5

Importance

Changes	3
Bugs	0	Features	0

Metric	Value
c	3
b	0
f	0
dl	0
loc	20
ccs	15
cts	15
cp	1
rs	8.8571
cc	5
eloc	11
nc	5
nop	0
crap	5

<?php

namespace Box\Spout\Reader\XLSX\Helper;

use Box\Spout\Reader\Wrapper\XMLReader;

/**
 * Class StyleHelper
 * This class provides helper functions related to XLSX styles
 *
 * @package Box\Spout\Reader\XLSX\Helper
 */
class StyleHelper
{
    /** Paths of XML files relative to the XLSX file root */
    const STYLES_XML_FILE_PATH = 'xl/styles.xml';

    /** Nodes used to find relevant information in the styles XML file */
    const XML_NODE_NUM_FMTS = 'numFmts';
    const XML_NODE_NUM_FMT = 'numFmt';
    const XML_NODE_CELL_XFS = 'cellXfs';
    const XML_NODE_XF = 'xf';

    /** Attributes used to find relevant information in the styles XML file */
    const XML_ATTRIBUTE_NUM_FMT_ID = 'numFmtId';
    const XML_ATTRIBUTE_FORMAT_CODE = 'formatCode';
    const XML_ATTRIBUTE_APPLY_NUMBER_FORMAT = 'applyNumberFormat';

    /** By convention, default style ID is 0 */
    const DEFAULT_STYLE_ID = 0;

    /**
     * @see https://msdn.microsoft.com/en-us/library/ff529597(v=office.12).aspx
     * @var array Mapping between built-in numFmtId and the associated format - for dates only
     */
    protected static $builtinNumFmtIdToNumFormatMapping = [
        14 => 'm/d/yyyy', // @NOTE: ECMA spec is 'mm-dd-yy'
        15 => 'd-mmm-yy',
        16 => 'd-mmm',
        17 => 'mmm-yy',
        18 => 'h:mm AM/PM',
        19 => 'h:mm:ss AM/PM',
        20 => 'h:mm',
        21 => 'h:mm:ss',
        22 => 'm/d/yyyy h:mm', // @NOTE: ECMA spec is 'm/d/yy h:mm',
        45 => 'mm:ss',
        46 => '[h]:mm:ss',
        47 => 'mm:ss.0',  // @NOTE: ECMA spec is 'mmss.0',
    ];

    /** @var string Path of the XLSX file being read */
    protected $filePath;

    /** @var array Array containing a mapping NUM_FMT_ID => FORMAT_CODE */
    protected $customNumberFormats;

    /** @var array Array containing a mapping STYLE_ID => [STYLE_ATTRIBUTES] */
    protected $stylesAttributes;

    /**
     * @param string $filePath Path of the XLSX file being read
     */
    public function __construct($filePath)
    {
        $this->filePath = $filePath;
    }

    /**
     * Reads the styles.xml file and extract the relevant information from the file.
     *
     * @return void
     */
    protected function extractRelevantInfo()
    {
        $this->customNumberFormats = [];
        $this->stylesAttributes = [];

        $xmlReader = new XMLReader();

        if ($xmlReader->openFileInZip($this->filePath, self::STYLES_XML_FILE_PATH)) {
            while ($xmlReader->read()) {
                if ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_NUM_FMTS)) {
                    $this->extractNumberFormats($xmlReader);

                } else if ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_CELL_XFS)) {
                    $this->extractStyleAttributes($xmlReader);
                }
            }

            $xmlReader->close();
        }
    }

    /**
     * Extracts number formats from the "numFmt" nodes.
     * For simplicity, the styles attributes are kept in memory. This is possible thanks
     * to the reuse of formats. So 1 million cells should not use 1 million formats.
     *
     * @param \Box\Spout\Reader\Wrapper\XMLReader $xmlReader XML Reader positioned on the "numFmts" node
     * @return void
     */
    protected function extractNumberFormats($xmlReader)
    {
        while ($xmlReader->read()) {
            if ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_NUM_FMT)) {
                $numFmtId = intval($xmlReader->getAttribute(self::XML_ATTRIBUTE_NUM_FMT_ID));
                $formatCode = $xmlReader->getAttribute(self::XML_ATTRIBUTE_FORMAT_CODE);
                $this->customNumberFormats[$numFmtId] = $formatCode;
            } else if ($xmlReader->isPositionedOnEndingNode(self::XML_NODE_NUM_FMTS)) {
                // Once done reading "numFmts" node's children
                break;
            }
        }
    }

    /**
     * Extracts style attributes from the "xf" nodes, inside the "cellXfs" section.
     * For simplicity, the styles attributes are kept in memory. This is possible thanks
     * to the reuse of styles. So 1 million cells should not use 1 million styles.
     *
     * @param \Box\Spout\Reader\Wrapper\XMLReader $xmlReader XML Reader positioned on the "cellXfs" node
     * @return void
     */
    protected function extractStyleAttributes($xmlReader)
    {
        while ($xmlReader->read()) {
            if ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_XF)) {
                $this->stylesAttributes[] = [
                    self::XML_ATTRIBUTE_NUM_FMT_ID => intval($xmlReader->getAttribute(self::XML_ATTRIBUTE_NUM_FMT_ID)),
                    self::XML_ATTRIBUTE_APPLY_NUMBER_FORMAT => !!($xmlReader->getAttribute(self::XML_ATTRIBUTE_APPLY_NUMBER_FORMAT)),
                ];
            } else if ($xmlReader->isPositionedOnEndingNode(self::XML_NODE_CELL_XFS)) {
                // Once done reading "cellXfs" node's children
                break;
            }
        }
    }

    /**
     * @return array The custom number formats
     */
    protected function getCustomNumberFormats()
    {
        if (!isset($this->customNumberFormats)) {
            $this->extractRelevantInfo();
        }

        return $this->customNumberFormats;
    }

    /**
     * @return array The styles attributes
     */
    protected function getStylesAttributes()
    {
        if (!isset($this->stylesAttributes)) {
            $this->extractRelevantInfo();
        }

        return $this->stylesAttributes;
    }

    /**
     * Returns whether the style with the given ID should consider
     * numeric values as timestamps and format the cell as a date.
     *
     * @param int $styleId Zero-based style ID
     * @return bool Whether the cell with the given cell should display a date instead of a numeric value
     */
    public function shouldFormatNumericValueAsDate($styleId)
    {
        $stylesAttributes = $this->getStylesAttributes();

        // Default style (0) does not format numeric values as timestamps. Only custom styles do.
        // Also if the style ID does not exist in the styles.xml file, format as numeric value.
        // Using isset here because it is way faster than array_key_exists...
        if ($styleId === self::DEFAULT_STYLE_ID || !isset($stylesAttributes[$styleId])) {
            return false;
        }

        $styleAttributes = $stylesAttributes[$styleId];

        $applyNumberFormat = $styleAttributes[self::XML_ATTRIBUTE_APPLY_NUMBER_FORMAT];
        if (!$applyNumberFormat) {
            return false;
        }

        $numFmtId = $styleAttributes[self::XML_ATTRIBUTE_NUM_FMT_ID];
        return $this->doesNumFmtIdIndicateDate($numFmtId);
    }

    /**
     * @param int $numFmtId
     * @return bool Whether the number format ID indicates that the number is a timestamp
     */
    protected function doesNumFmtIdIndicateDate($numFmtId)
    {
        return (
            !$this->doesNumFmtIdIndicateGeneralFormat($numFmtId) &&
            (
                $this->isNumFmtIdBuiltInDateFormat($numFmtId) ||
                $this->isNumFmtIdCustomDateFormat($numFmtId)
            )
        );
    }

    /**
     * @param int $numFmtId
     * @return bool Whether the number format ID indicates the "General" format (0 by convention)
     */
    protected function doesNumFmtIdIndicateGeneralFormat($numFmtId)
    {
        return ($numFmtId === 0);
    }

    /**
     * @param int $numFmtId
     * @return bool Whether the number format ID indicates that the number is a timestamp
     */
    protected function isNumFmtIdBuiltInDateFormat($numFmtId)
    {
        $builtInDateFormatIds = array_keys(self::$builtinNumFmtIdToNumFormatMapping);
        return in_array($numFmtId, $builtInDateFormatIds);
    }

    /**
     * @param int $numFmtId
     * @return bool Whether the number format ID indicates that the number is a timestamp
     */
    protected function isNumFmtIdCustomDateFormat($numFmtId)
    {
        $customNumberFormats = $this->getCustomNumberFormats();

        // Using isset here because it is way faster than array_key_exists...
        if (!isset($customNumberFormats[$numFmtId])) {
            return false;
        }

        $customNumberFormat = $customNumberFormats[$numFmtId];

        // Remove extra formatting (what's between [ ], the brackets should not be preceded by a "\")
        $pattern = '((?<!\\\)\[.+?(?<!\\\)\])';
        $customNumberFormat = preg_replace($pattern, '', $customNumberFormat);

        // custom date formats contain specific characters to represent the date:
        // e - yy - m - d - h - s
        // and all of their variants (yyyy - mm - dd...)
        $dateFormatCharacters = ['e', 'yy', 'm', 'd', 'h', 's'];

        $hasFoundDateFormatCharacter = false;
        foreach ($dateFormatCharacters as $dateFormatCharacter) {
            // character not preceded by "\"
            $pattern = '/(?<!\\\)' . $dateFormatCharacter . '/';

            if (preg_match($pattern, $customNumberFormat)) {
                $hasFoundDateFormatCharacter = true;
                break;
            }
        }

        return $hasFoundDateFormatCharacter;
    }

    /**
     * Returns the format as defined in "styles.xml" of the given style.
     * NOTE: It is assumed that the style DOES have a number format associated to it.
     *
     * @param int $styleId Zero-based style ID
     * @return string The number format associated with the given style
     */
    public function getNumberFormat($styleId)
    {
        $stylesAttributes = $this->getStylesAttributes();
        $styleAttributes = $stylesAttributes[$styleId];
        $numFmtId = $styleAttributes[self::XML_ATTRIBUTE_NUM_FMT_ID];

        if ($this->isNumFmtIdBuiltInDateFormat($numFmtId)) {
            $numberFormat = self::$builtinNumFmtIdToNumFormatMapping[$numFmtId];
        } else {
            $customNumberFormats = $this->getCustomNumberFormats();
            $numberFormat = $customNumberFormats[$numFmtId];
        }

        return $numberFormat;
    }
}


1		<?php
2
3		namespace Box\Spout\Reader\XLSX\Helper;
4
5		use Box\Spout\Reader\Wrapper\XMLReader;
6
7		/**
8		* Class StyleHelper
9		* This class provides helper functions related to XLSX styles
10		*
11		* @package Box\Spout\Reader\XLSX\Helper
12		*/
13		class StyleHelper
14		{
15		/** Paths of XML files relative to the XLSX file root */
16		const STYLES_XML_FILE_PATH = 'xl/styles.xml';
17
18		/** Nodes used to find relevant information in the styles XML file */
19		const XML_NODE_NUM_FMTS = 'numFmts';
20		const XML_NODE_NUM_FMT = 'numFmt';
21		const XML_NODE_CELL_XFS = 'cellXfs';
22		const XML_NODE_XF = 'xf';
23
24		/** Attributes used to find relevant information in the styles XML file */
25		const XML_ATTRIBUTE_NUM_FMT_ID = 'numFmtId';
26		const XML_ATTRIBUTE_FORMAT_CODE = 'formatCode';
27		const XML_ATTRIBUTE_APPLY_NUMBER_FORMAT = 'applyNumberFormat';
28
29		/** By convention, default style ID is 0 */
30		const DEFAULT_STYLE_ID = 0;
31
32		/**
33		* @see https://msdn.microsoft.com/en-us/library/ff529597(v=office.12).aspx
34		* @var array Mapping between built-in numFmtId and the associated format - for dates only
35		*/
36		protected static $builtinNumFmtIdToNumFormatMapping = [
37		14 => 'm/d/yyyy', // @NOTE: ECMA spec is 'mm-dd-yy'
38		15 => 'd-mmm-yy',
39		16 => 'd-mmm',
40		17 => 'mmm-yy',
41		18 => 'h:mm AM/PM',
42		19 => 'h:mm:ss AM/PM',
43		20 => 'h:mm',
44		21 => 'h:mm:ss',
45		22 => 'm/d/yyyy h:mm', // @NOTE: ECMA spec is 'm/d/yy h:mm',
46		45 => 'mm:ss',
47		46 => '[h]:mm:ss',
48		47 => 'mm:ss.0', // @NOTE: ECMA spec is 'mmss.0',
49		];
50
51		/** @var string Path of the XLSX file being read */
52		protected $filePath;
53
54		/** @var array Array containing a mapping NUM_FMT_ID => FORMAT_CODE */
55		protected $customNumberFormats;
56
57		/** @var array Array containing a mapping STYLE_ID => [STYLE_ATTRIBUTES] */
58		protected $stylesAttributes;
59
60		/**
61		* @param string $filePath Path of the XLSX file being read
62		*/
63	90	public function __construct($filePath)
64		{
65	90	$this->filePath = $filePath;
66	90	}
67
68		/**
69		* Reads the styles.xml file and extract the relevant information from the file.
70		*
71		* @return void
72		*/
73	27	protected function extractRelevantInfo()
74		{
75	27	$this->customNumberFormats = [];
76	27	$this->stylesAttributes = [];
77
78	27	$xmlReader = new XMLReader();
79
80	27	if ($xmlReader->openFileInZip($this->filePath, self::STYLES_XML_FILE_PATH)) {
81	27	while ($xmlReader->read()) {
82	27	if ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_NUM_FMTS)) {
83	18	$this->extractNumberFormats($xmlReader);
84
85	27	} else if ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_CELL_XFS)) {
86	27	$this->extractStyleAttributes($xmlReader);
87	27	}
88	27	}
89
90	27	$xmlReader->close();
91	27	}
92	27	}
93
94		/**
95		* Extracts number formats from the "numFmt" nodes.
96		* For simplicity, the styles attributes are kept in memory. This is possible thanks
97		* to the reuse of formats. So 1 million cells should not use 1 million formats.
98		*
99		* @param \Box\Spout\Reader\Wrapper\XMLReader $xmlReader XML Reader positioned on the "numFmts" node
100		* @return void
101		*/
102	18	protected function extractNumberFormats($xmlReader)
103		{
104	18	while ($xmlReader->read()) {
105	18	if ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_NUM_FMT)) {
106	18	$numFmtId = intval($xmlReader->getAttribute(self::XML_ATTRIBUTE_NUM_FMT_ID));
107	18	$formatCode = $xmlReader->getAttribute(self::XML_ATTRIBUTE_FORMAT_CODE);
108	18	$this->customNumberFormats[$numFmtId] = $formatCode;
109	18	} else if ($xmlReader->isPositionedOnEndingNode(self::XML_NODE_NUM_FMTS)) {
110		// Once done reading "numFmts" node's children
111	18	break;
112		}
113	18	}
114	18	}
115
116		/**
117		* Extracts style attributes from the "xf" nodes, inside the "cellXfs" section.
118		* For simplicity, the styles attributes are kept in memory. This is possible thanks
119		* to the reuse of styles. So 1 million cells should not use 1 million styles.
120		*
121		* @param \Box\Spout\Reader\Wrapper\XMLReader $xmlReader XML Reader positioned on the "cellXfs" node
122		* @return void
123		*/
124	27	protected function extractStyleAttributes($xmlReader)
125		{
126	27	while ($xmlReader->read()) {
127	27	if ($xmlReader->isPositionedOnStartingNode(self::XML_NODE_XF)) {
128	27	$this->stylesAttributes[] = [
129	27	self::XML_ATTRIBUTE_NUM_FMT_ID => intval($xmlReader->getAttribute(self::XML_ATTRIBUTE_NUM_FMT_ID)),
130	27	self::XML_ATTRIBUTE_APPLY_NUMBER_FORMAT => !!($xmlReader->getAttribute(self::XML_ATTRIBUTE_APPLY_NUMBER_FORMAT)),
131		];
132	27	} else if ($xmlReader->isPositionedOnEndingNode(self::XML_NODE_CELL_XFS)) {
133		// Once done reading "cellXfs" node's children
134	27	break;
135		}
136	27	}
137	27	}
138
139		/**
140		* @return array The custom number formats
141		*/
142	12	protected function getCustomNumberFormats()
143		{
144	12	if (!isset($this->customNumberFormats)) {
145		$this->extractRelevantInfo();
146		}
147
148	12	return $this->customNumberFormats;
149		}
150
151		/**
152		* @return array The styles attributes
153		*/
154	27	protected function getStylesAttributes()
155		{
156	27	if (!isset($this->stylesAttributes)) {
157	27	$this->extractRelevantInfo();
158	27	}
159
160	27	return $this->stylesAttributes;
161		}
162
163		/**
164		* Returns whether the style with the given ID should consider
165		* numeric values as timestamps and format the cell as a date.
166		*
167		* @param int $styleId Zero-based style ID
168		* @return bool Whether the cell with the given cell should display a date instead of a numeric value
169		*/
170	108	public function shouldFormatNumericValueAsDate($styleId)
171		{
172	108	$stylesAttributes = $this->getStylesAttributes();
173
174		// Default style (0) does not format numeric values as timestamps. Only custom styles do.
175		// Also if the style ID does not exist in the styles.xml file, format as numeric value.
176		// Using isset here because it is way faster than array_key_exists...
177	108	if ($styleId === self::DEFAULT_STYLE_ID \|\| !isset($stylesAttributes[$styleId])) {
178	21	return false;
179		}
180
181	87	$styleAttributes = $stylesAttributes[$styleId];
182
183	87	$applyNumberFormat = $styleAttributes[self::XML_ATTRIBUTE_APPLY_NUMBER_FORMAT];
184	87	if (!$applyNumberFormat) {
185	3	return false;
186		}
187
188	84	$numFmtId = $styleAttributes[self::XML_ATTRIBUTE_NUM_FMT_ID];
189	84	return $this->doesNumFmtIdIndicateDate($numFmtId);
190		}
191
192		/**
193		* @param int $numFmtId
194		* @return bool Whether the number format ID indicates that the number is a timestamp
195		*/
196	84	protected function doesNumFmtIdIndicateDate($numFmtId)
197		{
198		return (
199	84	!$this->doesNumFmtIdIndicateGeneralFormat($numFmtId) &&
200		(
201	81	$this->isNumFmtIdBuiltInDateFormat($numFmtId) \|\|
202	78	$this->isNumFmtIdCustomDateFormat($numFmtId)
203	78	)
204	84	);
205		}
206
207		/**
208		* @param int $numFmtId
209		* @return bool Whether the number format ID indicates the "General" format (0 by convention)
210		*/
211	84	protected function doesNumFmtIdIndicateGeneralFormat($numFmtId)
212		{
213	84	return ($numFmtId === 0);
214		}
215
216		/**
217		* @param int $numFmtId
218		* @return bool Whether the number format ID indicates that the number is a timestamp
219		*/
220	81	protected function isNumFmtIdBuiltInDateFormat($numFmtId)
221		{
222	81	$builtInDateFormatIds = array_keys(self::$builtinNumFmtIdToNumFormatMapping);
223	81	return in_array($numFmtId, $builtInDateFormatIds);
224		}
225
226		/**
227		* @param int $numFmtId
228		* @return bool Whether the number format ID indicates that the number is a timestamp
229		*/
230	78	protected function isNumFmtIdCustomDateFormat($numFmtId)
231		{
232	78	$customNumberFormats = $this->getCustomNumberFormats();
233
234		// Using isset here because it is way faster than array_key_exists...
235	78	if (!isset($customNumberFormats[$numFmtId])) {
236	3	return false;
237		}
238
239	75	$customNumberFormat = $customNumberFormats[$numFmtId];
240
241		// Remove extra formatting (what's between [ ], the brackets should not be preceded by a "\")
242	75	$pattern = '((?<!\\\)\[.+?(?<!\\\)\])';
243	75	$customNumberFormat = preg_replace($pattern, '', $customNumberFormat);
244
245		// custom date formats contain specific characters to represent the date:
246		// e - yy - m - d - h - s
247		// and all of their variants (yyyy - mm - dd...)
248	75	$dateFormatCharacters = ['e', 'yy', 'm', 'd', 'h', 's'];
249
250	75	$hasFoundDateFormatCharacter = false;
251	75	foreach ($dateFormatCharacters as $dateFormatCharacter) {
252		// character not preceded by "\"
253	75	$pattern = '/(?<!\\\)' . $dateFormatCharacter . '/';
254
255	75	if (preg_match($pattern, $customNumberFormat)) {
256	66	$hasFoundDateFormatCharacter = true;
257	66	break;
258		}
259	75	}
260
261	75	return $hasFoundDateFormatCharacter;
262		}
263
264		/**
265		* Returns the format as defined in "styles.xml" of the given style.
266		* NOTE: It is assumed that the style DOES have a number format associated to it.
267		*
268		* @param int $styleId Zero-based style ID
269		* @return string The number format associated with the given style
270		*/
271	3	public function getNumberFormat($styleId)
272		{
273	3	$stylesAttributes = $this->getStylesAttributes();
274	3	$styleAttributes = $stylesAttributes[$styleId];
275	3	$numFmtId = $styleAttributes[self::XML_ATTRIBUTE_NUM_FMT_ID];
276
277	3	if ($this->isNumFmtIdBuiltInDateFormat($numFmtId)) {
278	3	$numberFormat = self::$builtinNumFmtIdToNumFormatMapping[$numFmtId];
279	3	} else {
280	3	$customNumberFormats = $this->getCustomNumberFormats();
281	3	$numberFormat = $customNumberFormats[$numFmtId];
282		}
283
284	3	return $numberFormat;
285		}
286		}
287

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Push — fix_windows_test ( db6202...c04b37 )

StyleHelper::extractRelevantInfo() B

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