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<?php
namespace PhpOffice\PhpSpreadsheet\Style\NumberFormat;
use PhpOffice\PhpSpreadsheet\Shared\Date;
class DateFormatter
{
/**
* Search/replace values to convert Excel date/time format masks to PHP format masks.
*/
private const DATE_FORMAT_REPLACEMENTS = [
// first remove escapes related to non-format characters
'\\' => '',
// 12-hour suffix
'am/pm' => 'A',
// 4-digit year
'e' => 'Y',
'yyyy' => 'Y',
// 2-digit year
'yy' => 'y',
// first letter of month - no php equivalent
'mmmmm' => 'M',
// full month name
'mmmm' => 'F',
// short month name
'mmm' => 'M',
// mm is minutes if time, but can also be month w/leading zero
// so we try to identify times be the inclusion of a : separator in the mask
// It isn't perfect, but the best way I know how
':mm' => ':i',
'mm:' => 'i:',
// full day of week name
'dddd' => 'l',
// short day of week name
'ddd' => 'D',
// days leading zero
'dd' => 'd',
// days no leading zero
'd' => 'j',
// fractional seconds - no php equivalent
'.s' => '',
];
/**
* Search/replace values to convert Excel date/time format masks hours to PHP format masks (24 hr clock).
*/
private const DATE_FORMAT_REPLACEMENTS24 = [
'hh' => 'H',
'h' => 'G',
// month leading zero
'mm' => 'm',
// month no leading zero
'm' => 'n',
// seconds
'ss' => 's',
];
/**
* Search/replace values to convert Excel date/time format masks hours to PHP format masks (12 hr clock).
*/
private const DATE_FORMAT_REPLACEMENTS12 = [
'hh' => 'h',
'h' => 'g',
// month leading zero
'mm' => 'm',
// month no leading zero
'm' => 'n',
// seconds
'ss' => 's',
];
private const HOURS_IN_DAY = 24;
private const MINUTES_IN_DAY = 60 * self::HOURS_IN_DAY;
private const SECONDS_IN_DAY = 60 * self::MINUTES_IN_DAY;
private const INTERVAL_PRECISION = 10;
private const INTERVAL_LEADING_ZERO = [
'[hh]',
'[mm]',
'[ss]',
];
private const INTERVAL_ROUND_PRECISION = [
// hours and minutes truncate
'[h]' => self::INTERVAL_PRECISION,
'[hh]' => self::INTERVAL_PRECISION,
'[m]' => self::INTERVAL_PRECISION,
'[mm]' => self::INTERVAL_PRECISION,
// seconds round
'[s]' => 0,
'[ss]' => 0,
];
private const INTERVAL_MULTIPLIER = [
'[h]' => self::HOURS_IN_DAY,
'[hh]' => self::HOURS_IN_DAY,
'[m]' => self::MINUTES_IN_DAY,
'[mm]' => self::MINUTES_IN_DAY,
'[s]' => self::SECONDS_IN_DAY,
'[ss]' => self::SECONDS_IN_DAY,
];
/** @param mixed $value */
private static function tryInterval(bool &$seekingBracket, string &$block, $value, string $format): void
{
if ($seekingBracket) {
if (false !== strpos($block, $format)) {
$hours = (string) (int) round(
self::INTERVAL_MULTIPLIER[$format] * $value,
self::INTERVAL_ROUND_PRECISION[$format]
);
if (strlen($hours) === 1 && in_array($format, self::INTERVAL_LEADING_ZERO, true)) {
$hours = "0$hours";
}
$block = str_replace($format, $hours, $block);
$seekingBracket = false;
}
}
}
/** @param mixed $value */
public static function format($value, string $format): string
{
// strip off first part containing e.g. [$-F800] or [$USD-409]
// general syntax: [$<Currency string>-<language info>]
// language info is in hexadecimal
// strip off chinese part like [DBNum1][$-804]
$format = (string) preg_replace('/^(\[DBNum\d\])*(\[\$[^\]]*\])/i', '', $format);
// OpenOffice.org uses upper-case number formats, e.g. 'YYYY', convert to lower-case;
// but we don't want to change any quoted strings
/** @var callable */
$callable = [self::class, 'setLowercaseCallback'];
$format = (string) preg_replace_callback('/(?:^|")([^"]*)(?:$|")/', $callable, $format);
// Only process the non-quoted blocks for date format characters
$blocks = explode('"', $format);
foreach ($blocks as $key => &$block) {
if ($key % 2 == 0) {
$block = strtr($block, self::DATE_FORMAT_REPLACEMENTS);
if (!strpos($block, 'A')) {
// 24-hour time format
// when [h]:mm format, the [h] should replace to the hours of the value * 24
$seekingBracket = true;
self::tryInterval($seekingBracket, $block, $value, '[h]');
self::tryInterval($seekingBracket, $block, $value, '[hh]');
self::tryInterval($seekingBracket, $block, $value, '[mm]');
self::tryInterval($seekingBracket, $block, $value, '[m]');
self::tryInterval($seekingBracket, $block, $value, '[s]');
self::tryInterval($seekingBracket, $block, $value, '[ss]');
$block = strtr($block, self::DATE_FORMAT_REPLACEMENTS24);
} else {
// 12-hour time format
$block = strtr($block, self::DATE_FORMAT_REPLACEMENTS12);
}
}
}
$format = implode('"', $blocks);
// escape any quoted characters so that DateTime format() will render them correctly
/** @var callable */
$callback = [self::class, 'escapeQuotesCallback'];
$format = (string) preg_replace_callback('/"(.*)"/U', $callback, $format);
$dateObj = Date::excelToDateTimeObject($value);
// If the colon preceding minute had been quoted, as happens in
// Excel 2003 XML formats, m will not have been changed to i above.
// Change it now.
$format = (string) \preg_replace('/\\\\:m/', ':i', $format);
return $dateObj->format($format);
}
private static function setLowercaseCallback(array $matches): string
{
return mb_strtolower($matches[0]);
}
private static function escapeQuotesCallback(array $matches): string
{
return '\\' . implode('\\', str_split($matches[1]));
}
}
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