ArcanistWorkingCopyPath.php
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	<?php

	final class ArcanistWorkingCopyPath
	extends Phobject {

	private $path;
	private $mode;
	private $data;
	private $binary;
	private $dataAsLines;
	private $charMap;
	private $lineMap;

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

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

	public function setData($data) {
	$this->data = $data;
	return $this;
	}

	public function getData() {
	if ($this->data === null) {
	throw new Exception(
	pht(
	'No data provided for path "%s".',
	$this->getDescription()));
	}

	return $this->data;
	}

	public function getDataAsLines() {
	if ($this->dataAsLines === null) {
	$lines = phutil_split_lines($this->getData());
	$this->dataAsLines = $lines;
	}

	return $this->dataAsLines;
	}

	public function setMode($mode) {
	$this->mode = $mode;
	return $this;
	}

	public function getMode() {
	if ($this->mode === null) {
	throw new Exception(
	pht(
	'No mode provided for path "%s".',
	$this->getDescription()));
	}

	return $this->mode;
	}

	public function isExecutable() {
	$mode = $this->getMode();
	return (bool)($mode & 0111);
	}

	public function isBinary() {
	if ($this->binary === null) {
	$data = $this->getData();
	$is_binary = ArcanistDiffUtils::isHeuristicBinaryFile($data);
	$this->binary = $is_binary;
	}

	return $this->binary;
	}

	public function getMimeType() {
	if ($this->mimeType === null) {
	// TOOLSETS: This is not terribly efficient on real repositories since
	// it re-writes files which are often already on disk, but is good for
	// unit tests.

	$tmp = new TempFile();
	Filesystem::writeFile($tmp, $this->getData());
	$mime = Filesystem::getMimeType($tmp);

	$this->mimeType = $mime;
	}

	return $this->mimeType;
	}


	public function getBasename() {
	return basename($this->getPath());
	}

	public function getLineAndCharFromOffset($offset) {
	if ($this->charMap === null) {
	$char_map = array();
	$line_map = array();

	$lines = $this->getDataAsLines();

	$line_number = 0;
	$line_start = 0;
	foreach ($lines as $line) {
	$len = strlen($line);
	$line_map[] = $line_start;
	$line_start += $len;
	for ($ii = 0; $ii < $len; $ii++) {
	$char_map[] = $line_number;
	}
	$line_number++;
	}

	$this->charMap = $char_map;
	$this->lineMap = $line_map;
	}

	$line = $this->charMap[$offset];
	$char = $offset - $this->lineMap[$line];

	return array($line, $char);
	}

	}

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