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Wed, Jan 8, 06:09

FileList.php
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<?php
/*
* Copyright 2011 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* A list of files, e.g. from command line arguments.
*/
class FileList {
protected $files = array();
protected $dirs = array();
/**
* Build a new FileList from an array of paths, e.g. from $argv.
*
* @param list List of relative or absolute file paths.
*/
public function __construct($paths) {
foreach ($paths as $path) {
$path = Filesystem::resolvePath($path);
if (is_dir($path)) {
$path = rtrim($path, '/').'/';
$this->dirs[$path] = true;
}
$this->files[] = $path;
}
}
/**
* Determine if a path is one of the paths in the list. Note that an empty
* file list is considered to contain every file.
*
* @param string Relative or absolute system file path.
* @param bool If true, consider the path to be contained in the list if
* the list contains a parent directory. If false, require
* that the path be part of the list explicitly.
* @return bool If true, the file is in the list.
*/
public function contains($path, $allow_parent_directory = true) {
if ($this->isEmpty()) {
return true;
}
$path = Filesystem::resolvePath($path);
if (is_dir($path)) {
$path .= '/';
}
foreach ($this->files as $file) {
if ($file == $path) {
return true;
}
if ($allow_parent_directory) {
$len = strlen($file);
if (isset($this->dirs[$file]) && !strncmp($file, $path, $len)) {
return true;
}
}
}
return false;
}
/**
* Check if the file list is empty -- that is, it contains no files.
*
* @return bool If true, the list is empty.
*/
public function isEmpty() {
return !$this->files;
}
}

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