Verzeichnisstruktur phpBB-3.3.15
- Veröffentlicht
- 28.08.2024
So funktioniert es
|
|
Auf das letzte Element klicken. Dies geht jeweils ein Schritt zurück |
Auf das Icon klicken, dies öffnet das Verzeichnis. Nochmal klicken schließt das Verzeichnis. |
|
|
(Beispiel Datei-Icons)
|
Auf das Icon klicken um den Quellcode anzuzeigen |
BufferStream.php
001 <?php
002
003 namespace GuzzleHttp\Psr7;
004
005 use Psr\Http\Message\StreamInterface;
006
007 /**
008 * Provides a buffer stream that can be written to to fill a buffer, and read
009 * from to remove bytes from the buffer.
010 *
011 * This stream returns a "hwm" metadata value that tells upstream consumers
012 * what the configured high water mark of the stream is, or the maximum
013 * preferred size of the buffer.
014 *
015 * @final
016 */
017 class BufferStream implements StreamInterface
018 {
019 private $hwm;
020 private $buffer = '';
021
022 /**
023 * @param int $hwm High water mark, representing the preferred maximum
024 * buffer size. If the size of the buffer exceeds the high
025 * water mark, then calls to write will continue to succeed
026 * but will return false to inform writers to slow down
027 * until the buffer has been drained by reading from it.
028 */
029 public function __construct($hwm = 16384)
030 {
031 $this->hwm = $hwm;
032 }
033
034 public function __toString()
035 {
036 return $this->getContents();
037 }
038
039 public function getContents()
040 {
041 $buffer = $this->buffer;
042 $this->buffer = '';
043
044 return $buffer;
045 }
046
047 public function close()
048 {
049 $this->buffer = '';
050 }
051
052 public function detach()
053 {
054 $this->close();
055
056 return null;
057 }
058
059 public function getSize()
060 {
061 return strlen($this->buffer);
062 }
063
064 public function isReadable()
065 {
066 return true;
067 }
068
069 public function isWritable()
070 {
071 return true;
072 }
073
074 public function isSeekable()
075 {
076 return false;
077 }
078
079 public function rewind()
080 {
081 $this->seek(0);
082 }
083
084 public function seek($offset, $whence = SEEK_SET)
085 {
086 throw new \RuntimeException('Cannot seek a BufferStream');
087 }
088
089 public function eof()
090 {
091 return strlen($this->buffer) === 0;
092 }
093
094 public function tell()
095 {
096 throw new \RuntimeException('Cannot determine the position of a BufferStream');
097 }
098
099 /**
100 * Reads data from the buffer.
101 */
102 public function read($length)
103 {
104 $currentLength = strlen($this->buffer);
105
106 if ($length >= $currentLength) {
107 // No need to slice the buffer because we don't have enough data.
108 $result = $this->buffer;
109 $this->buffer = '';
110 } else {
111 // Slice up the result to provide a subset of the buffer.
112 $result = substr($this->buffer, 0, $length);
113 $this->buffer = substr($this->buffer, $length);
114 }
115
116 return $result;
117 }
118
119 /**
120 * Writes data to the buffer.
121 */
122 public function write($string)
123 {
124 $this->buffer .= $string;
125
126 // TODO: What should happen here?
127 if (strlen($this->buffer) >= $this->hwm) {
128 return false;
129 }
130
131 return strlen($string);
132 }
133
134 public function getMetadata($key = null)
135 {
136 if ($key == 'hwm') {
137 return $this->hwm;
138 }
139
140 return $key ? null : [];
141 }
142 }
143