CellValueFormatter::formatStrCellValue() - Code Metrics - Inspection of "Add docs to gitattrs" - box/spout - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#557)

by Adrien

created 2018-06-03 19:08 UTC

CellValueFormatter::formatStrCellValue() A

↳ Parent: CellValueFormatter

Complexity

Conditions	1
Paths	1

Size

Total Lines	7
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	1

Importance

Changes

Metric	Value
dl	0
loc	7
rs	9.4285
c	0
b	0
f	0
ccs	4
cts	4
cp	1
cc	1
eloc	4
nc	1
nop	1
crap	1

<?php

namespace Box\Spout\Reader\XLSX\Helper;

use Box\Spout\Reader\Exception\InvalidValueException;
use Box\Spout\Reader\XLSX\Manager\SharedStringsManager;
use Box\Spout\Reader\XLSX\Manager\StyleManager;

/**
 * Class CellValueFormatter
 * This class provides helper functions to format cell values
 */
class CellValueFormatter
{
    /** Definition of all possible cell types */
    const CELL_TYPE_INLINE_STRING = 'inlineStr';
    const CELL_TYPE_STR = 'str';
    const CELL_TYPE_SHARED_STRING = 's';
    const CELL_TYPE_BOOLEAN = 'b';
    const CELL_TYPE_NUMERIC = 'n';
    const CELL_TYPE_DATE = 'd';
    const CELL_TYPE_ERROR = 'e';

    /** Definition of XML nodes names used to parse data */
    const XML_NODE_VALUE = 'v';
    const XML_NODE_INLINE_STRING_VALUE = 't';

    /** Definition of XML attributes used to parse data */
    const XML_ATTRIBUTE_TYPE = 't';
    const XML_ATTRIBUTE_STYLE_ID = 's';

    /** Constants used for date formatting */
    const NUM_SECONDS_IN_ONE_DAY = 86400;
    const NUM_SECONDS_IN_ONE_HOUR = 3600;
    const NUM_SECONDS_IN_ONE_MINUTE = 60;

    /**
     * February 29th, 1900 is NOT a leap year but Excel thinks it is...
     * @see https://en.wikipedia.org/wiki/Year_1900_problem#Microsoft_Excel
     */
    const ERRONEOUS_EXCEL_LEAP_YEAR_DAY = 60;

    /** @var SharedStringsManager Manages shared strings */
    protected $sharedStringsManager;

    /** @var StyleManager Manages styles */
    protected $styleManager;

    /** @var bool Whether date/time values should be returned as PHP objects or be formatted as strings */
    protected $shouldFormatDates;

    /** @var bool Whether date/time values should use a calendar starting in 1904 instead of 1900 */
    protected $shouldUse1904Dates;

    /** @var \Box\Spout\Common\Helper\Escaper\XLSX Used to unescape XML data */
    protected $escaper;

    /**
     * @param SharedStringsManager $sharedStringsManager Manages shared strings
     * @param StyleManager $styleManager Manages styles
     * @param bool $shouldFormatDates Whether date/time values should be returned as PHP objects or be formatted as strings
     * @param bool $shouldUse1904Dates Whether date/time values should use a calendar starting in 1904 instead of 1900
     * @param \Box\Spout\Common\Helper\Escaper\XLSX $escaper Used to unescape XML data
     */
    public function __construct($sharedStringsManager, $styleManager, $shouldFormatDates, $shouldUse1904Dates, $escaper)
    {
        $this->sharedStringsManager = $sharedStringsManager;
        $this->styleManager = $styleManager;
        $this->shouldFormatDates = $shouldFormatDates;
        $this->shouldUse1904Dates = $shouldUse1904Dates;
        $this->escaper = $escaper;
    }

    /**
     * Returns the (unescaped) correctly marshalled, cell value associated to the given XML node.
     *
     * @param \DOMNode $node
     * @throws InvalidValueException If the value is not valid
     * @return string|int|float|bool|\DateTime The value associated with the cell
     */
    public function extractAndFormatNodeValue($node)
    {
        // Default cell type is "n"
        $cellType = $node->getAttribute(self::XML_ATTRIBUTE_TYPE) ?: self::CELL_TYPE_NUMERIC;
        $cellStyleId = (int) $node->getAttribute(self::XML_ATTRIBUTE_STYLE_ID);
        $vNodeValue = $this->getVNodeValue($node);

        if (($vNodeValue === '') && ($cellType !== self::CELL_TYPE_INLINE_STRING)) {
            return $vNodeValue;
        }

        switch ($cellType) {
            case self::CELL_TYPE_INLINE_STRING:
                return $this->formatInlineStringCellValue($node);
            case self::CELL_TYPE_SHARED_STRING:
                return $this->formatSharedStringCellValue($vNodeValue);
            case self::CELL_TYPE_STR:
                return $this->formatStrCellValue($vNodeValue);
            case self::CELL_TYPE_BOOLEAN:
                return $this->formatBooleanCellValue($vNodeValue);
            case self::CELL_TYPE_NUMERIC:
                return $this->formatNumericCellValue($vNodeValue, $cellStyleId);
            case self::CELL_TYPE_DATE:
                return $this->formatDateCellValue($vNodeValue);
            default:
                throw new InvalidValueException($vNodeValue);
        }
    }

    /**
     * Returns the cell's string value from a node's nested value node
     *
     * @param \DOMNode $node
     * @return string The value associated with the cell
     */
    protected function getVNodeValue($node)
    {
        // for cell types having a "v" tag containing the value.
        // if not, the returned value should be empty string.
        $vNode = $node->getElementsByTagName(self::XML_NODE_VALUE)->item(0);

        return ($vNode !== null) ? $vNode->nodeValue : '';
    }

    /**
     * Returns the cell String value where string is inline.
     *
     * @param \DOMNode $node
     * @return string The value associated with the cell
     */
    protected function formatInlineStringCellValue($node)
    {
        // inline strings are formatted this way:
        // <c r="A1" t="inlineStr"><is><t>[INLINE_STRING]</t></is></c>
        $tNode = $node->getElementsByTagName(self::XML_NODE_INLINE_STRING_VALUE)->item(0);
        $cellValue = $this->escaper->unescape($tNode->nodeValue);

        return $cellValue;
    }

    /**
     * Returns the cell String value from shared-strings file using nodeValue index.
     *
     * @param string $nodeValue
     * @return string The value associated with the cell
     */
    protected function formatSharedStringCellValue($nodeValue)
    {
        // shared strings are formatted this way:
        // <c r="A1" t="s"><v>[SHARED_STRING_INDEX]</v></c>
        $sharedStringIndex = (int) $nodeValue;
        $escapedCellValue = $this->sharedStringsManager->getStringAtIndex($sharedStringIndex);
        $cellValue = $this->escaper->unescape($escapedCellValue);

        return $cellValue;
    }

    /**
     * Returns the cell String value, where string is stored in value node.
     *
     * @param string $nodeValue
     * @return string The value associated with the cell
     */
    protected function formatStrCellValue($nodeValue)
    {
        $escapedCellValue = trim($nodeValue);
        $cellValue = $this->escaper->unescape($escapedCellValue);

        return $cellValue;
    }

    /**
     * Returns the cell Numeric value from string of nodeValue.
     * The value can also represent a timestamp and a DateTime will be returned.
     *
     * @param string $nodeValue
     * @param int $cellStyleId 0 being the default style
     * @return int|float|\DateTime The value associated with the cell
     */
    protected function formatNumericCellValue($nodeValue, $cellStyleId)
    {
        // Numeric values can represent numbers as well as timestamps.
        // We need to look at the style of the cell to determine whether it is one or the other.
        $shouldFormatAsDate = $this->styleManager->shouldFormatNumericValueAsDate($cellStyleId);

        if ($shouldFormatAsDate) {
            $cellValue = $this->formatExcelTimestampValue((float) $nodeValue, $cellStyleId);
        } else {
            $nodeIntValue = (int) $nodeValue;
            $nodeFloatValue = (float) $nodeValue;
            $cellValue = ((float) $nodeIntValue === $nodeFloatValue) ? $nodeIntValue : $nodeFloatValue;
        }

        return $cellValue;
    }

    /**
     * Returns a cell's PHP Date value, associated to the given timestamp.
     * NOTE: The timestamp is a float representing the number of days since the base Excel date:
     *       Dec 30th 1899, 1900 or Jan 1st, 1904, depending on the Workbook setting.
     * NOTE: The timestamp can also represent a time, if it is a value between 0 and 1.
     *
     * @see ECMA-376 Part 1 - §18.17.4
     *
     * @param float $nodeValue
     * @param int $cellStyleId 0 being the default style
     * @throws InvalidValueException If the value is not a valid timestamp
     * @return \DateTime The value associated with the cell
     */
    protected function formatExcelTimestampValue($nodeValue, $cellStyleId)
    {
        if ($this->isValidTimestampValue($nodeValue)) {
            $cellValue = $this->formatExcelTimestampValueAsDateTimeValue($nodeValue, $cellStyleId);
        } else {
            throw new InvalidValueException($nodeValue);
        }

        return $cellValue;
    }

    /**
     * Returns whether the given timestamp is supported by SpreadsheetML
     * @see ECMA-376 Part 1 - §18.17.4 - this specifies the timestamp boundaries.
     *
     * @param float $timestampValue
     * @return bool
     */
    protected function isValidTimestampValue($timestampValue)
    {
        // @NOTE: some versions of Excel don't support negative dates (e.g. Excel for Mac 2011)
        return (
            $this->shouldUse1904Dates && $timestampValue >= -695055 && $timestampValue <= 2957003.9999884 ||
            !$this->shouldUse1904Dates && $timestampValue >= -693593 && $timestampValue <= 2958465.9999884
        );
    }

    /**
     * Returns a cell's PHP DateTime value, associated to the given timestamp.
     * Only the time value matters. The date part is set to the base Excel date:
     * Dec 30th 1899, 1900 or Jan 1st, 1904, depending on the Workbook setting.
     *
     * @param float $nodeValue
     * @param int $cellStyleId 0 being the default style
     * @return \DateTime|string The value associated with the cell
     */
    protected function formatExcelTimestampValueAsDateTimeValue($nodeValue, $cellStyleId)
    {
        $baseDate = $this->shouldUse1904Dates ? '1904-01-01' : '1899-12-30';

        $daysSinceBaseDate = (int) $nodeValue;
        $timeRemainder = fmod($nodeValue, 1);
        $secondsRemainder = round($timeRemainder * self::NUM_SECONDS_IN_ONE_DAY, 0);

        $dateObj = \DateTime::createFromFormat('|Y-m-d', $baseDate);
        $dateObj->modify('+' . $daysSinceBaseDate . 'days');
        $dateObj->modify('+' . $secondsRemainder . 'seconds');

        if ($this->shouldFormatDates) {
            $styleNumberFormatCode = $this->styleManager->getNumberFormatCode($cellStyleId);
            $phpDateFormat = DateFormatHelper::toPHPDateFormat($styleNumberFormatCode);
            $cellValue = $dateObj->format($phpDateFormat);
        } else {
            $cellValue = $dateObj;
        }

        return $cellValue;
    }

    /**
     * Returns the cell Boolean value from a specific node's Value.
     *
     * @param string $nodeValue
     * @return bool The value associated with the cell
     */
    protected function formatBooleanCellValue($nodeValue)
    {
        return (bool) $nodeValue;
    }

    /**
     * Returns a cell's PHP Date value, associated to the given stored nodeValue.
     * @see ECMA-376 Part 1 - §18.17.4
     *
     * @param string $nodeValue ISO 8601 Date string
     * @throws InvalidValueException If the value is not a valid date
     * @return \DateTime|string The value associated with the cell
     */
    protected function formatDateCellValue($nodeValue)
    {
        // Mitigate thrown Exception on invalid date-time format (http://php.net/manual/en/datetime.construct.php)
        try {
            $cellValue = ($this->shouldFormatDates) ? $nodeValue : new \DateTime($nodeValue);
        } catch (\Exception $e) {
            throw new InvalidValueException($nodeValue);
        }

        return $cellValue;
    }
}


1		<?php
2
3		namespace Box\Spout\Reader\XLSX\Helper;
4
5		use Box\Spout\Reader\Exception\InvalidValueException;
6		use Box\Spout\Reader\XLSX\Manager\SharedStringsManager;
7		use Box\Spout\Reader\XLSX\Manager\StyleManager;
8
9		/**
10		* Class CellValueFormatter
11		* This class provides helper functions to format cell values
12		*/
13		class CellValueFormatter
14		{
15		/** Definition of all possible cell types */
16		const CELL_TYPE_INLINE_STRING = 'inlineStr';
17		const CELL_TYPE_STR = 'str';
18		const CELL_TYPE_SHARED_STRING = 's';
19		const CELL_TYPE_BOOLEAN = 'b';
20		const CELL_TYPE_NUMERIC = 'n';
21		const CELL_TYPE_DATE = 'd';
22		const CELL_TYPE_ERROR = 'e';
23
24		/** Definition of XML nodes names used to parse data */
25		const XML_NODE_VALUE = 'v';
26		const XML_NODE_INLINE_STRING_VALUE = 't';
27
28		/** Definition of XML attributes used to parse data */
29		const XML_ATTRIBUTE_TYPE = 't';
30		const XML_ATTRIBUTE_STYLE_ID = 's';
31
32		/** Constants used for date formatting */
33		const NUM_SECONDS_IN_ONE_DAY = 86400;
34		const NUM_SECONDS_IN_ONE_HOUR = 3600;
35		const NUM_SECONDS_IN_ONE_MINUTE = 60;
36
37		/**
38		* February 29th, 1900 is NOT a leap year but Excel thinks it is...
39		* @see https://en.wikipedia.org/wiki/Year_1900_problem#Microsoft_Excel
40		*/
41		const ERRONEOUS_EXCEL_LEAP_YEAR_DAY = 60;
42
43		/** @var SharedStringsManager Manages shared strings */
44		protected $sharedStringsManager;
45
46		/** @var StyleManager Manages styles */
47		protected $styleManager;
48
49		/** @var bool Whether date/time values should be returned as PHP objects or be formatted as strings */
50		protected $shouldFormatDates;
51
52		/** @var bool Whether date/time values should use a calendar starting in 1904 instead of 1900 */
53		protected $shouldUse1904Dates;
54
55		/** @var \Box\Spout\Common\Helper\Escaper\XLSX Used to unescape XML data */
56		protected $escaper;
57
58		/**
59		* @param SharedStringsManager $sharedStringsManager Manages shared strings
60		* @param StyleManager $styleManager Manages styles
61		* @param bool $shouldFormatDates Whether date/time values should be returned as PHP objects or be formatted as strings
62		* @param bool $shouldUse1904Dates Whether date/time values should use a calendar starting in 1904 instead of 1900
63		* @param \Box\Spout\Common\Helper\Escaper\XLSX $escaper Used to unescape XML data
64		*/
65	83	public function __construct($sharedStringsManager, $styleManager, $shouldFormatDates, $shouldUse1904Dates, $escaper)
66		{
67	83	$this->sharedStringsManager = $sharedStringsManager;
68	83	$this->styleManager = $styleManager;
69	83	$this->shouldFormatDates = $shouldFormatDates;
70	83	$this->shouldUse1904Dates = $shouldUse1904Dates;
71	83	$this->escaper = $escaper;
72	83	}
73
74		/**
75		* Returns the (unescaped) correctly marshalled, cell value associated to the given XML node.
76		*
77		* @param \DOMNode $node
78		* @throws InvalidValueException If the value is not valid
79		* @return string\|int\|float\|bool\|\DateTime The value associated with the cell
80		*/
81	62	public function extractAndFormatNodeValue($node)
82		{
83		// Default cell type is "n"
84	62	$cellType = $node->getAttribute(self::XML_ATTRIBUTE_TYPE) ?: self::CELL_TYPE_NUMERIC;
85	62	$cellStyleId = (int) $node->getAttribute(self::XML_ATTRIBUTE_STYLE_ID);
86	62	$vNodeValue = $this->getVNodeValue($node);
87
88	62	if (($vNodeValue === '') && ($cellType !== self::CELL_TYPE_INLINE_STRING)) {
89	1	return $vNodeValue;
90		}
91
92		switch ($cellType) {
93	62	case self::CELL_TYPE_INLINE_STRING:
94	7	return $this->formatInlineStringCellValue($node);
95	56	case self::CELL_TYPE_SHARED_STRING:
96	21	return $this->formatSharedStringCellValue($vNodeValue);
97	39	case self::CELL_TYPE_STR:
98	1	return $this->formatStrCellValue($vNodeValue);
99	39	case self::CELL_TYPE_BOOLEAN:
100	1	return $this->formatBooleanCellValue($vNodeValue);
101	39	case self::CELL_TYPE_NUMERIC:
102	39	return $this->formatNumericCellValue($vNodeValue, $cellStyleId);
103	2	case self::CELL_TYPE_DATE:
104	2	return $this->formatDateCellValue($vNodeValue);
105		default:
106	1	throw new InvalidValueException($vNodeValue);
107		}
108		}
109
110		/**
111		* Returns the cell's string value from a node's nested value node
112		*
113		* @param \DOMNode $node
114		* @return string The value associated with the cell
115		*/
116	62	protected function getVNodeValue($node)
117		{
118		// for cell types having a "v" tag containing the value.
119		// if not, the returned value should be empty string.
120	62	$vNode = $node->getElementsByTagName(self::XML_NODE_VALUE)->item(0);
121
122	62	return ($vNode !== null) ? $vNode->nodeValue : '';
123		}
124
125		/**
126		* Returns the cell String value where string is inline.
127		*
128		* @param \DOMNode $node
129		* @return string The value associated with the cell
130		*/
131	11	protected function formatInlineStringCellValue($node)
132		{
133		// inline strings are formatted this way:
134		// <c r="A1" t="inlineStr"><is><t>[INLINE_STRING]</t></is></c>
135	11	$tNode = $node->getElementsByTagName(self::XML_NODE_INLINE_STRING_VALUE)->item(0);
136	11	$cellValue = $this->escaper->unescape($tNode->nodeValue);
137
138	11	return $cellValue;
139		}
140
141		/**
142		* Returns the cell String value from shared-strings file using nodeValue index.
143		*
144		* @param string $nodeValue
145		* @return string The value associated with the cell
146		*/
147	21	protected function formatSharedStringCellValue($nodeValue)
148		{
149		// shared strings are formatted this way:
150		// <c r="A1" t="s"><v>[SHARED_STRING_INDEX]</v></c>
151	21	$sharedStringIndex = (int) $nodeValue;
152	21	$escapedCellValue = $this->sharedStringsManager->getStringAtIndex($sharedStringIndex);
153	21	$cellValue = $this->escaper->unescape($escapedCellValue);
154
155	21	return $cellValue;
156		}
157
158		/**
159		* Returns the cell String value, where string is stored in value node.
160		*
161		* @param string $nodeValue
162		* @return string The value associated with the cell
163		*/
164	1	protected function formatStrCellValue($nodeValue)
165		{
166	1	$escapedCellValue = trim($nodeValue);
167	1	$cellValue = $this->escaper->unescape($escapedCellValue);
168
169	1	return $cellValue;
170		}
171
172		/**
173		* Returns the cell Numeric value from string of nodeValue.
174		* The value can also represent a timestamp and a DateTime will be returned.
175		*
176		* @param string $nodeValue
177		* @param int $cellStyleId 0 being the default style
178		* @return int\|float\|\DateTime The value associated with the cell
179		*/
180	52	protected function formatNumericCellValue($nodeValue, $cellStyleId)
181		{
182		// Numeric values can represent numbers as well as timestamps.
183		// We need to look at the style of the cell to determine whether it is one or the other.
184	52	$shouldFormatAsDate = $this->styleManager->shouldFormatNumericValueAsDate($cellStyleId);
185
186	52	if ($shouldFormatAsDate) {
187	34	$cellValue = $this->formatExcelTimestampValue((float) $nodeValue, $cellStyleId);
188		} else {
189	19	$nodeIntValue = (int) $nodeValue;
190	19	$nodeFloatValue = (float) $nodeValue;
191	19	$cellValue = ((float) $nodeIntValue === $nodeFloatValue) ? $nodeIntValue : $nodeFloatValue;
192		}
193
194	48	return $cellValue;
195		}
196
197		/**
198		* Returns a cell's PHP Date value, associated to the given timestamp.
199		* NOTE: The timestamp is a float representing the number of days since the base Excel date:
200		* Dec 30th 1899, 1900 or Jan 1st, 1904, depending on the Workbook setting.
201		* NOTE: The timestamp can also represent a time, if it is a value between 0 and 1.
202		*
203		* @see ECMA-376 Part 1 - §18.17.4
204		*
205		* @param float $nodeValue
206		* @param int $cellStyleId 0 being the default style
207		* @throws InvalidValueException If the value is not a valid timestamp
208		* @return \DateTime The value associated with the cell
209		*/
210	34	protected function formatExcelTimestampValue($nodeValue, $cellStyleId)
211		{
212	34	if ($this->isValidTimestampValue($nodeValue)) {
213	30	$cellValue = $this->formatExcelTimestampValueAsDateTimeValue($nodeValue, $cellStyleId);
214		} else {
215	4	throw new InvalidValueException($nodeValue);
216		}
217
218	30	return $cellValue;
219		}
220
221		/**
222		* Returns whether the given timestamp is supported by SpreadsheetML
223		* @see ECMA-376 Part 1 - §18.17.4 - this specifies the timestamp boundaries.
224		*
225		* @param float $timestampValue
226		* @return bool
227		*/
228	34	protected function isValidTimestampValue($timestampValue)
229		{
230		// @NOTE: some versions of Excel don't support negative dates (e.g. Excel for Mac 2011)
231		return (
232	34	$this->shouldUse1904Dates && $timestampValue >= -695055 && $timestampValue <= 2957003.9999884 \|\|
233	34	!$this->shouldUse1904Dates && $timestampValue >= -693593 && $timestampValue <= 2958465.9999884
234		);
235		}
236
237		/**
238		* Returns a cell's PHP DateTime value, associated to the given timestamp.
239		* Only the time value matters. The date part is set to the base Excel date:
240		* Dec 30th 1899, 1900 or Jan 1st, 1904, depending on the Workbook setting.
241		*
242		* @param float $nodeValue
243		* @param int $cellStyleId 0 being the default style
244		* @return \DateTime\|string The value associated with the cell
245		*/
246	30	protected function formatExcelTimestampValueAsDateTimeValue($nodeValue, $cellStyleId)
247		{
248	30	$baseDate = $this->shouldUse1904Dates ? '1904-01-01' : '1899-12-30';
249
250	30	$daysSinceBaseDate = (int) $nodeValue;
251	30	$timeRemainder = fmod($nodeValue, 1);
252	30	$secondsRemainder = round($timeRemainder * self::NUM_SECONDS_IN_ONE_DAY, 0);
253
254	30	$dateObj = \DateTime::createFromFormat('\|Y-m-d', $baseDate);
255	30	$dateObj->modify('+' . $daysSinceBaseDate . 'days');
256	30	$dateObj->modify('+' . $secondsRemainder . 'seconds');
257
258	30	if ($this->shouldFormatDates) {
259	2	$styleNumberFormatCode = $this->styleManager->getNumberFormatCode($cellStyleId);
260	2	$phpDateFormat = DateFormatHelper::toPHPDateFormat($styleNumberFormatCode);
261	2	$cellValue = $dateObj->format($phpDateFormat);
262		} else {
263	28	$cellValue = $dateObj;
264		}
265
266	30	return $cellValue;
267		}
268
269		/**
270		* Returns the cell Boolean value from a specific node's Value.
271		*
272		* @param string $nodeValue
273		* @return bool The value associated with the cell
274		*/
275	1	protected function formatBooleanCellValue($nodeValue)
276		{
277	1	return (bool) $nodeValue;
278		}
279
280		/**
281		* Returns a cell's PHP Date value, associated to the given stored nodeValue.
282		* @see ECMA-376 Part 1 - §18.17.4
283		*
284		* @param string $nodeValue ISO 8601 Date string
285		* @throws InvalidValueException If the value is not a valid date
286		* @return \DateTime\|string The value associated with the cell
287		*/
288	2	protected function formatDateCellValue($nodeValue)
289		{
290		// Mitigate thrown Exception on invalid date-time format (http://php.net/manual/en/datetime.construct.php)
291		try {
292	2	$cellValue = ($this->shouldFormatDates) ? $nodeValue : new \DateTime($nodeValue);
293	1	} catch (\Exception $e) {
294	1	throw new InvalidValueException($nodeValue);
295		}
296
297	2	return $cellValue;
298		}
299		}
300

box / spout

Pull Request — master (#557)

CellValueFormatter::formatStrCellValue() A

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