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DiffusionLowLevelMercurialPathsQuery.php
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			<?php

			/**
			* Execute and parse a low-level Mercurial paths query using `hg locate`.
			*/
			final class DiffusionLowLevelMercurialPathsQuery
			extends DiffusionLowLevelQuery {

			private $commit;
			private $path;

			public function withCommit($commit) {
			$this->commit = $commit;
			return $this;
			}

			public function withPath($path) {
			$this->path = $path;
			return $this;
			}

			protected function executeQuery() {
			$repository = $this->getRepository();
			$path = $this->path;
			$commit = $this->commit;

			$has_files = PhutilBinaryAnalyzer::getForBinary('hg')
			->isMercurialFilesCommandAvailable();
			if ($has_files) {
			$hg_paths_command = 'files --print0 --rev %s -I %s';
			} else {
			$hg_paths_command = 'locate --print0 --rev %s -I %s';
			}

			$match_against = trim($path, '/');
			$prefix = trim('./'.$match_against, '/');
			list($entire_manifest) = $repository->execxLocalCommand(
			$hg_paths_command,
			hgsprintf('%s', $commit),
			$prefix);
			return explode("\0", $entire_manifest);
			}

			}