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<?php
/**
* Abstract class for the substring transformations plugins
*/
declare(strict_types=1);
namespace PhpMyAdmin\Plugins\Transformations\Abs;
use PhpMyAdmin\FieldMetadata;
use PhpMyAdmin\Plugins\TransformationsPlugin;
use function __;
use function htmlspecialchars;
use function mb_strlen;
use function mb_substr;
/**
* Provides common methods for all of the substring transformations plugins.
*/
abstract class SubstringTransformationsPlugin extends TransformationsPlugin
{
/**
* Gets the transformation description of the specific plugin
*
* @return string
*/
public static function getInfo()
{
return __(
'Displays a part of a string. The first option is the number of'
. ' characters to skip from the beginning of the string (Default 0).'
. ' The second option is the number of characters to return (Default:'
. ' until end of string). The third option is the string to append'
. ' and/or prepend when truncation occurs (Default: "…").'
);
}
/**
* Does the actual work of each specific transformations plugin.
*
* @param string $buffer text to be transformed
* @param array $options transformation options
* @param FieldMetadata|null $meta meta information
*
* @return string
*/
public function applyTransformation($buffer, array $options = [], ?FieldMetadata $meta = null)
{
// possibly use a global transform and feed it with special options
// further operations on $buffer using the $options[] array.
$cfg = $GLOBALS['cfg'];
$options = $this->getOptions($options, $cfg['DefaultTransformations']['Substring']);
$optionZero = (int) $options[0];
if ($options[1] !== 'all') {
$newtext = mb_substr((string) $buffer, $optionZero, (int) $options[1]);
} else {
$newtext = mb_substr((string) $buffer, $optionZero);
}
$length = mb_strlen($newtext);
$baselength = mb_strlen((string) $buffer);
if ($length != $baselength) {
if ($optionZero !== 0) {
$newtext = $options[2] . $newtext;
}
if ($length + $optionZero != $baselength) {
$newtext .= $options[2];
}
}
return htmlspecialchars($newtext);
}
/* ~~~~~~~~~~~~~~~~~~~~ Getters and Setters ~~~~~~~~~~~~~~~~~~~~ */
/**
* Gets the transformation name of the specific plugin
*
* @return string
*/
public static function getName()
{
return 'Substring';
}
}
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