73 lines
2.2 KiB
PHP
73 lines
2.2 KiB
PHP
<?php
|
|
|
|
namespace League\HTMLToMarkdown\Converter;
|
|
|
|
use League\HTMLToMarkdown\ElementInterface;
|
|
|
|
class PreformattedConverter implements ConverterInterface
|
|
{
|
|
/**
|
|
* @param ElementInterface $element
|
|
*
|
|
* @return string
|
|
*/
|
|
public function convert(ElementInterface $element)
|
|
{
|
|
// Store the content of the code block in an array, one entry for each line
|
|
|
|
$markdown = '';
|
|
|
|
$code_content = html_entity_decode($element->getChildrenAsString());
|
|
$code_content = str_replace(array('<code>', '</code>'), '', $code_content);
|
|
$code_content = str_replace(array('<pre>', '</pre>'), '', $code_content);
|
|
|
|
$lines = preg_split('/\r\n|\r|\n/', $code_content);
|
|
$total = count($lines);
|
|
|
|
// If there's more than one line of code, prepend each line with four spaces and no backticks.
|
|
if ($total > 1 || $element->getTagName() === 'pre') {
|
|
// Remove the first and last line if they're empty
|
|
$first_line = trim($lines[0]);
|
|
$last_line = trim($lines[$total - 1]);
|
|
$first_line = trim($first_line, '
'); //trim XML style carriage returns too
|
|
$last_line = trim($last_line, '
');
|
|
|
|
if (empty($first_line)) {
|
|
array_shift($lines);
|
|
}
|
|
|
|
if (empty($last_line)) {
|
|
array_pop($lines);
|
|
}
|
|
|
|
$count = 1;
|
|
foreach ($lines as $line) {
|
|
$line = str_replace('
', '', $line);
|
|
$markdown .= ' ' . $line;
|
|
// Add newlines, except final line of the code
|
|
if ($count !== $total) {
|
|
$markdown .= "\n";
|
|
}
|
|
$count++;
|
|
}
|
|
$markdown .= "\n";
|
|
} else {
|
|
// There's only one line of code. It's a code span, not a block. Just wrap it with backticks.
|
|
$markdown .= '`' . $lines[0] . '`';
|
|
}
|
|
|
|
if ($element->getTagName() === 'pre') {
|
|
$markdown = "\n" . $markdown . "\n";
|
|
}
|
|
|
|
return $markdown;
|
|
}
|
|
|
|
/**
|
|
* @return string[]
|
|
*/
|
|
public function getSupportedTags()
|
|
{
|
|
return array('pre', 'code');
|
|
}
|
|
}
|