MessageInterface.php
3 years ago
RequestInterface.php
3 years ago
ResponseInterface.php
3 years ago
ServerRequestInterface.php
3 years ago
StreamInterface.php
3 years ago
UploadedFileInterface.php
3 years ago
UriInterface.php
3 years ago
StreamInterface.php
145 lines
| 1 | <?php |
| 2 | |
| 3 | namespace IAWP\Psr\Http\Message; |
| 4 | |
| 5 | /** |
| 6 | * Describes a data stream. |
| 7 | * |
| 8 | * Typically, an instance will wrap a PHP stream; this interface provides |
| 9 | * a wrapper around the most common operations, including serialization of |
| 10 | * the entire stream to a string. |
| 11 | */ |
| 12 | interface StreamInterface |
| 13 | { |
| 14 | /** |
| 15 | * Reads all data from the stream into a string, from the beginning to end. |
| 16 | * |
| 17 | * This method MUST attempt to seek to the beginning of the stream before |
| 18 | * reading data and read the stream until the end is reached. |
| 19 | * |
| 20 | * Warning: This could attempt to load a large amount of data into memory. |
| 21 | * |
| 22 | * This method MUST NOT raise an exception in order to conform with PHP's |
| 23 | * string casting operations. |
| 24 | * |
| 25 | * @see http://php.net/manual/en/language.oop5.magic.php#object.tostring |
| 26 | * @return string |
| 27 | */ |
| 28 | public function __toString(); |
| 29 | /** |
| 30 | * Closes the stream and any underlying resources. |
| 31 | * |
| 32 | * @return void |
| 33 | */ |
| 34 | public function close(); |
| 35 | /** |
| 36 | * Separates any underlying resources from the stream. |
| 37 | * |
| 38 | * After the stream has been detached, the stream is in an unusable state. |
| 39 | * |
| 40 | * @return resource|null Underlying PHP stream, if any |
| 41 | */ |
| 42 | public function detach(); |
| 43 | /** |
| 44 | * Get the size of the stream if known. |
| 45 | * |
| 46 | * @return int|null Returns the size in bytes if known, or null if unknown. |
| 47 | */ |
| 48 | public function getSize(); |
| 49 | /** |
| 50 | * Returns the current position of the file read/write pointer |
| 51 | * |
| 52 | * @return int Position of the file pointer |
| 53 | * @throws \RuntimeException on error. |
| 54 | */ |
| 55 | public function tell(); |
| 56 | /** |
| 57 | * Returns true if the stream is at the end of the stream. |
| 58 | * |
| 59 | * @return bool |
| 60 | */ |
| 61 | public function eof(); |
| 62 | /** |
| 63 | * Returns whether or not the stream is seekable. |
| 64 | * |
| 65 | * @return bool |
| 66 | */ |
| 67 | public function isSeekable(); |
| 68 | /** |
| 69 | * Seek to a position in the stream. |
| 70 | * |
| 71 | * @link http://www.php.net/manual/en/function.fseek.php |
| 72 | * @param int $offset Stream offset |
| 73 | * @param int $whence Specifies how the cursor position will be calculated |
| 74 | * based on the seek offset. Valid values are identical to the built-in |
| 75 | * PHP $whence values for `fseek()`. SEEK_SET: Set position equal to |
| 76 | * offset bytes SEEK_CUR: Set position to current location plus offset |
| 77 | * SEEK_END: Set position to end-of-stream plus offset. |
| 78 | * @throws \RuntimeException on failure. |
| 79 | */ |
| 80 | public function seek($offset, $whence = \SEEK_SET); |
| 81 | /** |
| 82 | * Seek to the beginning of the stream. |
| 83 | * |
| 84 | * If the stream is not seekable, this method will raise an exception; |
| 85 | * otherwise, it will perform a seek(0). |
| 86 | * |
| 87 | * @see seek() |
| 88 | * @link http://www.php.net/manual/en/function.fseek.php |
| 89 | * @throws \RuntimeException on failure. |
| 90 | */ |
| 91 | public function rewind(); |
| 92 | /** |
| 93 | * Returns whether or not the stream is writable. |
| 94 | * |
| 95 | * @return bool |
| 96 | */ |
| 97 | public function isWritable(); |
| 98 | /** |
| 99 | * Write data to the stream. |
| 100 | * |
| 101 | * @param string $string The string that is to be written. |
| 102 | * @return int Returns the number of bytes written to the stream. |
| 103 | * @throws \RuntimeException on failure. |
| 104 | */ |
| 105 | public function write($string); |
| 106 | /** |
| 107 | * Returns whether or not the stream is readable. |
| 108 | * |
| 109 | * @return bool |
| 110 | */ |
| 111 | public function isReadable(); |
| 112 | /** |
| 113 | * Read data from the stream. |
| 114 | * |
| 115 | * @param int $length Read up to $length bytes from the object and return |
| 116 | * them. Fewer than $length bytes may be returned if underlying stream |
| 117 | * call returns fewer bytes. |
| 118 | * @return string Returns the data read from the stream, or an empty string |
| 119 | * if no bytes are available. |
| 120 | * @throws \RuntimeException if an error occurs. |
| 121 | */ |
| 122 | public function read($length); |
| 123 | /** |
| 124 | * Returns the remaining contents in a string |
| 125 | * |
| 126 | * @return string |
| 127 | * @throws \RuntimeException if unable to read or an error occurs while |
| 128 | * reading. |
| 129 | */ |
| 130 | public function getContents(); |
| 131 | /** |
| 132 | * Get stream metadata as an associative array or retrieve a specific key. |
| 133 | * |
| 134 | * The keys returned are identical to the keys returned from PHP's |
| 135 | * stream_get_meta_data() function. |
| 136 | * |
| 137 | * @link http://php.net/manual/en/function.stream-get-meta-data.php |
| 138 | * @param string $key Specific metadata to retrieve. |
| 139 | * @return array|mixed|null Returns an associative array if no key is |
| 140 | * provided. Returns a specific key value if a key is provided and the |
| 141 | * value is found, or null if the key is not found. |
| 142 | */ |
| 143 | public function getMetadata($key = null); |
| 144 | } |
| 145 |