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<?php
/**
* Part of the Joomla Framework Filesystem Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Filesystem;
use Joomla\Filesystem\Exception\FilesystemException;
/**
* Joomla! Stream Interface
*
* The Joomla! stream interface is designed to handle files as streams
* where as the legacy JFile static class treated files in a rather
* atomic manner.
*
* This class adheres to the stream wrapper operations:
*
* @link https://www.php.net/manual/en/function.stream-get-wrappers.php
* @link https://www.php.net/manual/en/intro.stream.php PHP Stream Manual
* @link https://www.php.net/manual/en/wrappers.php Stream Wrappers
* @link https://www.php.net/manual/en/filters.php Stream Filters
* @link https://www.php.net/manual/en/transports.php Socket Transports (used by some options, particularly HTTP proxy)
* @since 1.0
*/
class Stream
{
/**
* File Mode
*
* @var integer
* @since 1.0
*/
protected $filemode = 0644;
/**
* Directory Mode
*
* @var integer
* @since 1.0
*/
protected $dirmode = 0755;
/**
* Default Chunk Size
*
* @var integer
* @since 1.0
*/
protected $chunksize = 8192;
/**
* Filename
*
* @var string
* @since 1.0
*/
protected $filename;
/**
* Prefix of the connection for writing
*
* @var string
* @since 1.0
*/
protected $writeprefix;
/**
* Prefix of the connection for reading
*
* @var string
* @since 1.0
*/
protected $readprefix;
/**
* Read Processing method
*
* @var string gz, bz, f
* If a scheme is detected, fopen will be defaulted
* To use compression with a network stream use a filter
* @since 1.0
*/
protected $processingmethod = 'f';
/**
* Filters applied to the current stream
*
* @var array
* @since 1.0
*/
protected $filters = [];
/**
* File Handle
*
* @var resource
* @since 1.0
*/
protected $fh;
/**
* File size
*
* @var integer
* @since 1.0
*/
protected $filesize;
/**
* Context to use when opening the connection
*
* @var string
* @since 1.0
*/
protected $context;
/**
* Context options; used to rebuild the context
*
* @var array
* @since 1.0
*/
protected $contextOptions;
/**
* The mode under which the file was opened
*
* @var string
* @since 1.0
*/
protected $openmode;
/**
* Constructor
*
* @param string $writeprefix Prefix of the stream (optional). Unlike the JPATH_*, this has a final path separator!
* @param string $readprefix The read prefix (optional).
* @param array $context The context options (optional).
*
* @since 1.0
*/
public function __construct($writeprefix = '', $readprefix = '', $context = [])
{
$this->writeprefix = $writeprefix;
$this->readprefix = $readprefix;
$this->contextOptions = $context;
$this->_buildContext();
}
/**
* Destructor
*
* @since 1.0
*/
public function __destruct()
{
// Attempt to close on destruction if there is a file handle
if ($this->fh) {
@$this->close();
}
}
/**
* Creates a new stream object with appropriate prefix
*
* @param boolean $usePrefix Prefix the connections for writing
* @param string $ua UA User agent to use
* @param boolean $uamask User agent masking (prefix Mozilla)
*
* @return Stream
*
* @see Stream
* @since 1.0
*/
public static function getStream($usePrefix = true, $ua = null, $uamask = false)
{
// Setup the context; Joomla! UA and overwrite
$context = [];
// Set the UA for HTTP
$context['http']['user_agent'] = $ua ?: 'Joomla! Framework Stream';
if ($usePrefix) {
return new static(JPATH_ROOT . '/', JPATH_ROOT, $context);
}
return new static('', '', $context);
}
/**
* Generic File Operations
*
* Open a stream with some lazy loading smarts
*
* @param string $filename Filename
* @param string $mode Mode string to use
* @param boolean $useIncludePath Use the PHP include path
* @param resource $context Context to use when opening
* @param boolean $usePrefix Use a prefix to open the file
* @param boolean $relative Filename is a relative path (if false, strips JPATH_ROOT to make it relative)
* @param boolean $detectprocessingmode Detect the processing method for the file and use the appropriate function
* to handle output automatically
*
* @return boolean
*
* @since 1.0
* @throws FilesystemException
*/
public function open(
$filename,
$mode = 'r',
$useIncludePath = false,
$context = null,
$usePrefix = false,
$relative = false,
$detectprocessingmode = false
) {
$filename = $this->_getFilename($filename, $mode, $usePrefix, $relative);
if (!$filename) {
throw new FilesystemException('Filename not set');
}
$this->filename = $filename;
$this->openmode = $mode;
$url = parse_url($filename);
if (isset($url['scheme'])) {
$scheme = ucfirst($url['scheme']);
// Map to StringWrapper if required
if ($scheme === 'String') {
$scheme = 'StringWrapper';
}
// If we're dealing with a Joomla! stream, load it
if (Helper::isJoomlaStream($scheme)) {
require_once __DIR__ . '/Stream/' . $scheme . '.php';
}
// We have a scheme! force the method to be f
$this->processingmethod = 'f';
} elseif ($detectprocessingmode) {
$ext = strtolower(pathinfo($this->filename, \PATHINFO_EXTENSION));
switch ($ext) {
case 'tgz':
case 'gz':
case 'gzip':
$this->processingmethod = 'gz';
break;
case 'tbz2':
case 'bz2':
case 'bzip2':
$this->processingmethod = 'bz';
break;
default:
$this->processingmethod = 'f';
break;
}
}
// Capture PHP errors
error_clear_last();
// Decide which context to use:
switch ($this->processingmethod) {
// Gzip doesn't support contexts or streams
case 'gz':
$this->fh = gzopen($filename, $mode, $useIncludePath);
break;
// Bzip2 is much like gzip except it doesn't use the include path
case 'bz':
$this->fh = bzopen($filename, $mode);
break;
// Fopen can handle streams
case 'f':
default:
// One supplied at open; overrides everything
if ($context) {
$this->fh = @fopen($filename, $mode, $useIncludePath, $context);
} elseif ($this->context) {
// One provided at initialisation
$this->fh = @fopen($filename, $mode, $useIncludePath, $this->context);
} else {
// No context; all defaults
$this->fh = @fopen($filename, $mode, $useIncludePath);
}
break;
}
if (!$this->fh) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => sprintf('Unknown error opening file %s', $filename),
];
}
throw new FilesystemException($error['message']);
}
// Return the result
return true;
}
/**
* Attempt to close a file handle
*
* Will return false if it failed and true on success
* If the file is not open the system will return true, this function destroys the file handle as well
*
* @return boolean
*
* @since 1.0
* @throws FilesystemException
*/
public function close()
{
if (!$this->fh) {
throw new FilesystemException('File not open');
}
// Capture PHP errors
error_clear_last();
switch ($this->processingmethod) {
case 'gz':
$res = gzclose($this->fh);
break;
case 'bz':
$res = bzclose($this->fh);
break;
case 'f':
default:
$res = fclose($this->fh);
break;
}
if (!$res) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => 'Unable to close stream',
];
}
throw new FilesystemException($error['message']);
}
// Reset this
$this->fh = null;
// If we wrote, chmod the file after it's closed
if ($this->openmode[0] == 'w') {
$this->chmod();
}
// Return the result
return true;
}
/**
* Work out if we're at the end of the file for a stream
*
* @return boolean
*
* @since 1.0
* @throws FilesystemException
*/
public function eof()
{
if (!$this->fh) {
throw new FilesystemException('File not open');
}
// Capture PHP errors
error_clear_last();
switch ($this->processingmethod) {
case 'gz':
$res = gzeof($this->fh);
break;
case 'bz':
case 'f':
default:
$res = feof($this->fh);
break;
}
$error = error_get_last();
if ($error !== null && $error['message'] !== '') {
throw new FilesystemException($error['message']);
}
// Return the result
return $res;
}
/**
* Retrieve the file size of the path
*
* @return integer|boolean
*
* @since 1.0
* @throws FilesystemException
*/
public function filesize()
{
if (!$this->filename) {
throw new FilesystemException('File not open');
}
// Capture PHP errors
error_clear_last();
$res = @filesize($this->filename);
if (!$res) {
$res = Helper::remotefsize($this->filename);
}
if (!$res) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => 'Failed to get file size. This may not work for all streams.',
];
}
throw new FilesystemException($error['message']);
}
$this->filesize = $res;
// Return the result
return $this->filesize;
}
/**
* Get a line from the stream source.
*
* @param integer $length The number of bytes (optional) to read.
*
* @return string
*
* @since 1.0
* @throws FilesystemException
*/
public function gets($length = 0)
{
if (!$this->fh) {
throw new FilesystemException('File not open');
}
// Capture PHP errors
error_clear_last();
switch ($this->processingmethod) {
case 'gz':
$res = $length ? gzgets($this->fh, $length) : gzgets($this->fh);
break;
case 'bz':
case 'f':
default:
$res = $length ? fgets($this->fh, $length) : fgets($this->fh);
break;
}
if (!$res) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => 'Unable to read from stream',
];
}
throw new FilesystemException($error['message']);
}
// Return the result
return $res;
}
/**
* Read a file
*
* Handles user space streams appropriately otherwise any read will return 8192
*
* @param integer $length Length of data to read
*
* @return string
*
* @link https://www.php.net/manual/en/function.fread.php
* @since 1.0
* @throws FilesystemException
*/
public function read($length = 0)
{
if (!$this->fh) {
throw new FilesystemException('File not open');
}
if (!$this->filesize && !$length) {
// Get the filesize
$this->filesize();
if (!$this->filesize) {
// Set it to the biggest and then wait until eof
$length = -1;
} else {
$length = $this->filesize;
}
}
$retval = false;
// Capture PHP errors
error_clear_last();
$remaining = $length;
do {
// Do chunked reads where relevant
switch ($this->processingmethod) {
case 'bz':
$res = ($remaining > 0) ? bzread($this->fh, $remaining) : bzread($this->fh, $this->chunksize);
break;
case 'gz':
$res = ($remaining > 0) ? gzread($this->fh, $remaining) : gzread($this->fh, $this->chunksize);
break;
case 'f':
default:
$res = ($remaining > 0) ? fread($this->fh, $remaining) : fread($this->fh, $this->chunksize);
break;
}
if (!$res) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => 'Unable to read from stream',
];
}
throw new FilesystemException($error['message']);
}
if (!$retval) {
$retval = '';
}
$retval .= $res;
if (!$this->eof()) {
$len = \strlen($res);
$remaining -= $len;
} else {
// If it's the end of the file then we've nothing left to read; reset remaining and len
$remaining = 0;
$length = \strlen($retval);
}
} while ($remaining || !$length);
// Return the result
return $retval;
}
/**
* Seek the file
*
* Note: the return value is different to that of fseek
*
* @param integer $offset Offset to use when seeking.
* @param integer $whence Seek mode to use.
*
* @return boolean True on success, false on failure
*
* @link https://www.php.net/manual/en/function.fseek.php
* @since 1.0
* @throws FilesystemException
*/
public function seek($offset, $whence = \SEEK_SET)
{
if (!$this->fh) {
throw new FilesystemException('File not open');
}
// Capture PHP errors
error_clear_last();
switch ($this->processingmethod) {
case 'gz':
$res = gzseek($this->fh, $offset, $whence);
break;
case 'bz':
case 'f':
default:
$res = fseek($this->fh, $offset, $whence);
break;
}
// Seek, interestingly, returns 0 on success or -1 on failure.
if ($res == -1) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => 'Unable to seek in stream',
];
}
throw new FilesystemException($error['message']);
}
// Return the result
return true;
}
/**
* Returns the current position of the file read/write pointer.
*
* @return integer
*
* @since 1.0
* @throws FilesystemException
*/
public function tell()
{
if (!$this->fh) {
throw new FilesystemException('File not open');
}
// Capture PHP errors
error_clear_last();
switch ($this->processingmethod) {
case 'gz':
$res = gztell($this->fh);
break;
case 'bz':
case 'f':
default:
$res = ftell($this->fh);
break;
}
// May return 0 so check if it's really false
if ($res === false) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => 'Unable to determine the current position in stream',
];
}
throw new FilesystemException($error['message']);
}
// Return the result
return $res;
}
/**
* File write
*
* Whilst this function accepts a reference, the underlying fwrite
* will do a copy! This will roughly double the memory allocation for
* any write you do. Specifying chunked will get around this by only
* writing in specific chunk sizes. This defaults to 8192 which is a
* sane number to use most of the time (change the default with
* Stream::set('chunksize', newsize);)
* Note: This doesn't support gzip/bzip2 writing like reading does
*
* @param string $string Reference to the string to write.
* @param integer $length Length of the string to write.
* @param integer $chunk Size of chunks to write in.
*
* @return boolean
*
* @link https://www.php.net/manual/en/function.fwrite.php
* @since 1.0
* @throws FilesystemException
*/
public function write(&$string, $length = 0, $chunk = 0)
{
if (!$this->fh) {
throw new FilesystemException('File not open');
}
if ($this->openmode == 'r') {
throw new \RuntimeException('File is in readonly mode');
}
// If the length isn't set, set it to the length of the string.
if (!$length) {
$length = \strlen($string);
}
// If the chunk isn't set, set it to the default.
if (!$chunk) {
$chunk = $this->chunksize;
}
$retval = true;
// Capture PHP errors
error_clear_last();
$remaining = $length;
$start = 0;
do {
// If the amount remaining is greater than the chunk size, then use the chunk
$amount = ($remaining > $chunk) ? $chunk : $remaining;
$res = fwrite($this->fh, substr($string, $start), $amount);
// Returns false on error or the number of bytes written
if ($res === false) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => 'Unable to write to stream',
];
}
throw new FilesystemException($error['message']);
}
if ($res === 0) {
// Wrote nothing?
throw new FilesystemException('Warning: No data written');
}
// Wrote something
$start += $amount;
$remaining -= $res;
} while ($remaining);
// Return the result
return $retval;
}
/**
* Chmod wrapper
*
* @param string $filename File name.
* @param mixed $mode Mode to use.
*
* @return boolean
*
* @since 1.0
* @throws FilesystemException
*/
public function chmod($filename = '', $mode = 0)
{
if (!$filename) {
if (!isset($this->filename) || !$this->filename) {
throw new FilesystemException('Filename not set');
}
$filename = $this->filename;
}
// If no mode is set use the default
if (!$mode) {
$mode = $this->filemode;
}
// Capture PHP errors
error_clear_last();
$sch = parse_url($filename, \PHP_URL_SCHEME);
// Scheme specific options; ftp's chmod support is fun.
switch ($sch) {
case 'ftp':
case 'ftps':
$res = Helper::ftpChmod($filename, $mode);
break;
default:
$res = chmod($filename, $mode);
break;
}
if ($res === false) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => 'Unable to change mode of stream',
];
}
throw new FilesystemException($error['message']);
}
// Return the result
return true;
}
/**
* Get the stream metadata
*
* @return array header/metadata
*
* @link https://www.php.net/manual/en/function.stream-get-meta-data.php
* @since 1.0
* @throws FilesystemException
*/
public function get_meta_data()
{
if (!$this->fh) {
throw new FilesystemException('File not open');
}
return stream_get_meta_data($this->fh);
}
/**
* Stream contexts
* Builds the context from the array
*
* @return void
*
* @since 1.0
*/
public function _buildContext()
{
// According to the manual this always works!
if (\count($this->contextOptions)) {
$this->context = @stream_context_create($this->contextOptions);
} else {
$this->context = null;
}
}
/**
* Updates the context to the array
*
* Format is the same as the options for stream_context_create
*
* @param array $context Options to create the context with
*
* @return void
*
* @link https://www.php.net/stream_context_create
* @since 1.0
*/
public function setContextOptions($context)
{
$this->contextOptions = $context;
$this->_buildContext();
}
/**
* Adds a particular options to the context
*
* @param string $wrapper The wrapper to use
* @param string $name The option to set
* @param string $value The value of the option
*
* @return void
*
* @link https://www.php.net/stream_context_create Stream Context Creation
* @link https://www.php.net/manual/en/context.php Context Options for various streams
* @since 1.0
*/
public function addContextEntry($wrapper, $name, $value)
{
$this->contextOptions[$wrapper][$name] = $value;
$this->_buildContext();
}
/**
* Deletes a particular setting from a context
*
* @param string $wrapper The wrapper to use
* @param string $name The option to unset
*
* @return void
*
* @link https://www.php.net/stream_context_create
* @since 1.0
*/
public function deleteContextEntry($wrapper, $name)
{
// Check whether the wrapper is set
if (isset($this->contextOptions[$wrapper])) {
// Check that entry is set for that wrapper
if (isset($this->contextOptions[$wrapper][$name])) {
// Unset the item
unset($this->contextOptions[$wrapper][$name]);
// Check that there are still items there
if (!\count($this->contextOptions[$wrapper])) {
// Clean up an empty wrapper context option
unset($this->contextOptions[$wrapper]);
}
}
}
// Rebuild the context and apply it to the stream
$this->_buildContext();
}
/**
* Applies the current context to the stream
*
* Use this to change the values of the context after you've opened a stream
*
* @return boolean
*
* @since 1.0
* @throws FilesystemException
*/
public function applyContextToStream()
{
$retval = false;
if ($this->fh) {
// Capture PHP errors
error_clear_last();
$retval = @stream_context_set_option($this->fh, $this->contextOptions);
if (!$retval) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => 'Unable to apply context to stream',
];
}
throw new FilesystemException($error['message']);
}
}
return $retval;
}
/**
* Stream filters
* Append a filter to the chain
*
* @param string $filtername The key name of the filter.
* @param integer $readWrite Optional. Defaults to STREAM_FILTER_READ.
* @param array $params An array of params for the stream_filter_append call.
*
* @return resource|boolean
*
* @link https://www.php.net/manual/en/function.stream-filter-append.php
* @since 1.0
* @throws FilesystemException
*/
public function appendFilter($filtername, $readWrite = \STREAM_FILTER_READ, $params = [])
{
$res = false;
if ($this->fh) {
// Capture PHP errors
error_clear_last();
$res = @stream_filter_append($this->fh, $filtername, $readWrite, $params);
if (!$res) {
$error = error_get_last();
if ($error !== null && $error['message'] !== '') {
throw new FilesystemException($error['message']);
}
}
$this->filters[] = &$res;
}
return $res;
}
/**
* Prepend a filter to the chain
*
* @param string $filtername The key name of the filter.
* @param integer $readWrite Optional. Defaults to STREAM_FILTER_READ.
* @param array $params An array of params for the stream_filter_prepend call.
*
* @return resource|boolean
*
* @link https://www.php.net/manual/en/function.stream-filter-prepend.php
* @since 1.0
* @throws FilesystemException
*/
public function prependFilter($filtername, $readWrite = \STREAM_FILTER_READ, $params = [])
{
$res = false;
if ($this->fh) {
// Capture PHP errors
error_clear_last();
$res = @stream_filter_prepend($this->fh, $filtername, $readWrite, $params);
if (!$res) {
$error = error_get_last();
if ($error !== null && $error['message'] !== '') {
throw new FilesystemException($error['message']);
}
}
array_unshift($this->filters, '');
$this->filters[0] = &$res;
}
return $res;
}
/**
* Remove a filter, either by resource (handed out from the append or prepend function)
* or via getting the filter list)
*
* @param resource $resource The resource.
* @param boolean $byindex The index of the filter.
*
* @return boolean Result of operation
*
* @since 1.0
* @throws FilesystemException
*/
public function removeFilter(&$resource, $byindex = false)
{
// Capture PHP errors
error_clear_last();
if ($byindex) {
$res = stream_filter_remove($this->filters[$resource]);
} else {
$res = stream_filter_remove($resource);
}
if (!$res) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => 'Unable to remove filter from stream',
];
}
throw new FilesystemException($error['message']);
}
return $res;
}
/**
* Copy a file from src to dest
*
* @param string $src The file path to copy from.
* @param string $dest The file path to copy to.
* @param resource $context A valid context resource (optional) created with stream_context_create.
* @param boolean $usePrefix Controls the use of a prefix (optional).
* @param boolean $relative Determines if the filename given is relative. Relative paths do not have JPATH_ROOT stripped.
*
* @return boolean
*
* @since 1.0
* @throws FilesystemException
*/
public function copy($src, $dest, $context = null, $usePrefix = true, $relative = false)
{
// Capture PHP errors
error_clear_last();
$chmodDest = $this->_getFilename($dest, 'w', $usePrefix, $relative);
// Since we're going to open the file directly we need to get the filename.
// We need to use the same prefix so force everything to write.
$src = $this->_getFilename($src, 'w', $usePrefix, $relative);
$dest = $this->_getFilename($dest, 'w', $usePrefix, $relative);
// One supplied at copy; overrides everything
if ($context) {
// Use the provided context
$res = @copy($src, $dest, $context);
} elseif ($this->context) {
// One provided at initialisation
$res = @copy($src, $dest, $this->context);
} else {
// No context; all defaults
$res = @copy($src, $dest);
}
if (!$res) {
$error = error_get_last();
if ($error !== null && $error['message'] !== '') {
throw new FilesystemException($error['message']);
}
}
$this->chmod($chmodDest);
return $res;
}
/**
* Moves a file
*
* @param string $src The file path to move from.
* @param string $dest The file path to move to.
* @param resource $context A valid context resource (optional) created with stream_context_create.
* @param boolean $usePrefix Controls the use of a prefix (optional).
* @param boolean $relative Determines if the filename given is relative. Relative paths do not have JPATH_ROOT stripped.
*
* @return boolean
*
* @since 1.0
* @throws FilesystemException
*/
public function move($src, $dest, $context = null, $usePrefix = true, $relative = false)
{
// Capture PHP errors
error_clear_last();
$src = $this->_getFilename($src, 'w', $usePrefix, $relative);
$dest = $this->_getFilename($dest, 'w', $usePrefix, $relative);
if ($context) {
// Use the provided context
$res = @rename($src, $dest, $context);
} elseif ($this->context) {
// Use the object's context
$res = @rename($src, $dest, $this->context);
} else {
// Don't use any context
$res = @rename($src, $dest);
}
if (!$res) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => 'Unable to move stream',
];
}
throw new FilesystemException($error['message']);
}
$this->chmod($dest);
return $res;
}
/**
* Delete a file
*
* @param string $filename The file path to delete.
* @param resource $context A valid context resource (optional) created with stream_context_create.
* @param boolean $usePrefix Controls the use of a prefix (optional).
* @param boolean $relative Determines if the filename given is relative. Relative paths do not have JPATH_ROOT stripped.
*
* @return boolean
*
* @since 1.0
* @throws FilesystemException
*/
public function delete($filename, $context = null, $usePrefix = true, $relative = false)
{
// Capture PHP errors
error_clear_last();
$filename = $this->_getFilename($filename, 'w', $usePrefix, $relative);
if ($context) {
// Use the provided context
$res = @unlink($filename, $context);
} elseif ($this->context) {
// Use the object's context
$res = @unlink($filename, $this->context);
} else {
// Don't use any context
$res = @unlink($filename);
}
if (!$res) {
$error = error_get_last();
if ($error === null || $error['message'] === '') {
// Error but nothing from php? Create our own
$error = [
'message' => 'Unable to delete stream',
];
}
throw new FilesystemException($error['message']);
}
return $res;
}
/**
* Upload a file
*
* @param string $src The file path to copy from (usually a temp folder).
* @param string $dest The file path to copy to.
* @param resource $context A valid context resource (optional) created with stream_context_create.
* @param boolean $usePrefix Controls the use of a prefix (optional).
* @param boolean $relative Determines if the filename given is relative. Relative paths do not have JPATH_ROOT stripped.
*
* @return boolean
*
* @since 1.0
* @throws FilesystemException
*/
public function upload($src, $dest, $context = null, $usePrefix = true, $relative = false)
{
if (is_uploaded_file($src)) {
// Make sure it's an uploaded file
return $this->copy($src, $dest, $context, $usePrefix, $relative);
}
throw new FilesystemException('Not an uploaded file.');
}
/**
* Writes a chunk of data to a file.
*
* @param string $filename The file name.
* @param string $buffer The data to write to the file.
* @param boolean $appendToFile Append to the file and not overwrite it.
*
* @return boolean
*
* @since 1.0
*/
public function writeFile($filename, &$buffer, $appendToFile = false)
{
$fileMode = 'w';
// Switch the filemode when we want to append to the file
if ($appendToFile) {
$fileMode = 'a';
}
if ($this->open($filename, $fileMode)) {
$result = $this->write($buffer);
$this->chmod();
$this->close();
return $result;
}
return false;
}
/**
* Determine the appropriate 'filename' of a file
*
* @param string $filename Original filename of the file
* @param string $mode Mode string to retrieve the filename
* @param boolean $usePrefix Controls the use of a prefix
* @param boolean $relative Determines if the filename given is relative. Relative paths do not have JPATH_ROOT stripped.
*
* @return string
*
* @since 1.0
*/
public function _getFilename($filename, $mode, $usePrefix, $relative)
{
if ($usePrefix) {
// Get rid of binary or t, should be at the end of the string
$tmode = trim($mode, 'btf123456789');
$stream = explode('://', $filename, 2);
$scheme = '';
$filename = $stream[0];
if (\count($stream) >= 2) {
$scheme = $stream[0] . '://';
$filename = $stream[1];
}
// Check if it's a write mode then add the appropriate prefix
if (\in_array($tmode, Helper::getWriteModes())) {
$prefixToUse = $this->writeprefix;
} else {
$prefixToUse = $this->readprefix;
}
// Get rid of JPATH_ROOT (legacy compat)
if (!$relative && $prefixToUse) {
$pos = strpos($filename, JPATH_ROOT);
if ($pos !== false) {
$filename = substr_replace($filename, '', $pos, \strlen(JPATH_ROOT));
}
}
$filename = ($prefixToUse ? $prefixToUse : '') . $filename;
}
return $filename;
}
/**
* Return the internal file handle
*
* @return File handler
*
* @since 1.0
*/
public function getFileHandle()
{
return $this->fh;
}
/**
* Modifies a property of the object, creating it if it does not already exist.
*
* @param string $property The name of the property.
* @param mixed $value The value of the property to set.
*
* @return mixed Previous value of the property.
*
* @since 1.0
*/
public function set($property, $value = null)
{
$previous = $this->$property ?? null;
$this->$property = $value;
return $previous;
}
/**
* Returns a property of the object or the default value if the property is not set.
*
* @param string $property The name of the property.
* @param mixed $default The default value.
*
* @return mixed The value of the property.
*
* @since 1.0
*/
public function get($property, $default = null)
{
if (isset($this->$property)) {
return $this->$property;
}
return $default;
}
}