Differential D21422 Diff 50973 src/infrastructure/diff/prose/PhutilProseDifferenceEngine.php

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src/infrastructure/diff/prose/PhutilProseDifferenceEngine.php

Show First 20 Lines • Show All 136 Lines • ▼ Show 20 Lines	private function stitchPieces(array $pieces, $level) {
$count = count($pieces);		$count = count($pieces);
for ($ii = 0; $ii < $count; $ii += 2) {		for ($ii = 0; $ii < $count; $ii += 2) {
$result = $pieces[$ii];		$result = $pieces[$ii];
if ($ii + 1 < $count) {		if ($ii + 1 < $count) {
$result .= $pieces[$ii + 1];		$result .= $pieces[$ii + 1];
}		}

if ($level < 2) {		if ($level < 2) {
// Split pieces into separate text and whitespace sections: make one		$trimmed_pieces = $this->trimApart($result);
// piece out of all the whitespace at the beginning, one piece out of		foreach ($trimmed_pieces as $trimmed_piece) {
// all the actual text in the middle, and one piece out of all the		$results[] = $trimmed_piece;
// whitespace at the end.

$matches = null;
preg_match('/^(\s)(.?)(\s*)\z/s', $result, $matches);

if (strlen($matches[1])) {
$results[] = $matches[1];
}
if (strlen($matches[2])) {
$results[] = $matches[2];
}
if (strlen($matches[3])) {
$results[] = $matches[3];
}		}
} else {		} else {
$results[] = $result;		$results[] = $result;
}		}
}		}

// If the input ended with a delimiter, we can get an empty final piece.		// If the input ended with a delimiter, we can get an empty final piece.
// Just discard it.		// Just discard it.
▲ Show 20 Lines • Show All 98 Lines • ▼ Show 20 Lines	foreach ($parts as $part) {
$blocks[] = id(new PhabricatorDocumentEngineBlock())		$blocks[] = id(new PhabricatorDocumentEngineBlock())
->setContent($part)		->setContent($part)
->setDifferenceHash($hash);		->setDifferenceHash($hash);
}		}

return $blocks;		return $blocks;
}		}

		public static function trimApart($input) {
		// Split pieces into separate text and whitespace sections: make one
		// piece out of all the whitespace at the beginning, one piece out of
		// all the actual text in the middle, and one piece out of all the
		// whitespace at the end.

		$parts = array();

		$length = strlen($input);

		$corpus = ltrim($input);
		$l_length = strlen($corpus);
		if ($l_length !== $length) {
		$parts[] = substr($input, 0, $length - $l_length);
		}

		$corpus = rtrim($corpus);
		$lr_length = strlen($corpus);

		if ($lr_length) {
		$parts[] = $corpus;
		}

		if ($lr_length !== $l_length) {
		// NOTE: This will be a negative value; we're slicing from the end of
		// the input string.
		$parts[] = substr($input, $lr_length - $l_length);
		}

		return $parts;
		}

}		}