Differential D16097 Diff 38730 src/utils/PhutilProseDiff.php

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src/utils/PhutilProseDiff.php

Show All 10 Lines	public function addPart($type, $text) {
);		);
return $this;		return $this;
}		}

public function getParts() {		public function getParts() {
return $this->parts;		return $this->parts;
}		}

		/**
		* Get diff parts, but replace large blocks of unchanged text with "."
		* parts representing missing context.
		*/
		public function getSummaryParts() {
		$parts = $this->getParts();

		$head_key = head_key($parts);
		$last_key = last_key($parts);

		$results = array();
		foreach ($parts as $key => $part) {
		$is_head = ($key == $head_key);
		$is_last = ($key == $last_key);

		switch ($part['type']) {
		case '=':
		$pieces = $this->splitTextForSummary($part['text']);

		if ($is_head \|\| $is_last) {
		$need = 2;
		} else {
		$need = 3;
		}

		// We don't have enough pieces to omit anything, so just continue.
		if (count($pieces) < $need) {
		$results[] = $part;
		break;
		}

		if (!$is_head) {
		$results[] = array(
		'type' => '=',
		'text' => head($pieces),
		);
		}

		$results[] = array(
		'type' => '.',
		'text' => null,
		);

		if (!$is_last) {
		$results[] = array(
		'type' => '=',
		'text' => last($pieces),
		);
		}
		break;
		default:
		$results[] = $part;
		break;
		}
		}

		return $results;
		}


public function reorderParts() {		public function reorderParts() {
// Reorder sequences of removed and added sections to put all the "-"		// Reorder sequences of removed and added sections to put all the "-"
// parts together first, then all the "+" parts together. This produces		// parts together first, then all the "+" parts together. This produces
// a more human-readable result than intermingling them.		// a more human-readable result than intermingling them.

$o_run = array();		$o_run = array();
$n_run = array();		$n_run = array();
$result = array();		$result = array();
▲ Show 20 Lines • Show All 159 Lines • ▼ Show 20 Lines	private function mergeParts(array $parts) {
}		}

return array(		return array(
'type' => $type,		'type' => $type,
'text' => $text,		'text' => $text,
);		);
}		}

		private function splitTextForSummary($text) {
		$matches = null;

		$ok = preg_match('/^(\n*[^\n]+)\n/', $text, $matches);
		if (!$ok) {
		return array($text);
		}

		$head = $matches[1];
		$text = substr($text, strlen($head));

		$ok = preg_match('/\n([^\n]+\n*)\z/', $text, $matches);
		if (!$ok) {
		return array($text);
		}

		$last = $matches[1];
		$text = substr($text, 0, -strlen($last));

		if (!strlen(trim($text))) {
		return array($head, $last);
		} else {
		return array($head, $text, $last);
		}
		}

}		}