Differential D20393 Diff 48698 src/markup/engine/remarkup/blockrule/PhutilRemarkupQuotedBlockRule.php

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src/markup/engine/remarkup/blockrule/PhutilRemarkupQuotedBlockRule.php

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				<?php

				abstract class PhutilRemarkupQuotedBlockRule
				extends PhutilRemarkupBlockRule {

				final public function supportsChildBlocks() {
				return true;
				}

				final protected function normalizeQuotedBody($text) {
				$text = phutil_split_lines($text, true);
				foreach ($text as $key => $line) {
				$text[$key] = substr($line, 1);
				}

				// If every line in the block is empty or begins with at least one leading
				// space, strip the initial space off each line. When we quote text, we
				// normally add "> " (with a space) to the beginning of each line, which
				// can disrupt some other rules. If the block appears to have this space
				// in front of each line, remove it.

				$strip_space = true;
				foreach ($text as $key => $line) {
				$len = strlen($line);

				if (!$len) {
				// We'll still strip spaces if there are some completely empty
				// lines, they may have just had trailing whitespace trimmed.
				continue;
				}

				// If this line is part of a nested quote block, just ignore it when
				// realigning this quote block. It's either an author attribution
				// line with ">>!", or we'll deal with it in a subrule when processing
				// the nested quote block.
				if ($line[0] == '>') {
				continue;
				}

				if ($line[0] == ' ' \|\| $line[0] == "\n") {
				continue;
				}

				// The first character of this line is something other than a space, so
				// we can't strip spaces.
				$strip_space = false;
				break;
				}

				if ($strip_space) {
				foreach ($text as $key => $line) {
				$len = strlen($line);
				if (!$len) {
				continue;
				}

				if ($line[0] !== ' ') {
				continue;
				}

				$text[$key] = substr($line, 1);
				}
				}

				// Strip leading empty lines.
				foreach ($text as $key => $line) {
				if (!strlen(trim($line))) {
				unset($text[$key]);
				}
				}

				return implode('', $text);
				}

				final protected function getQuotedText($text) {
				$text = rtrim($text, "\n");

				$no_whitespace = array(
				// For readability, we render nested quotes as ">> quack",
				// not "> > quack".
				'>' => true,

				// If the line is empty except for a newline, do not add an
				// unnecessary dangling space.
				"\n" => true,
				);

				$text = phutil_split_lines($text, true);
				foreach ($text as $key => $line) {
				$c = null;
				if (isset($line[0])) {
				$c = $line[0];
				} else {
				$c = null;
				}

				if (isset($no_whitespace[$c])) {
				$text[$key] = '>'.$line;
				} else {
				$text[$key] = '> '.$line;
				}
				}
				$text = implode('', $text);

				return $text;
				}

				}