www.gusucode.com > Flarum中文优化论坛PHP源码程序 > FlarumChina-master/vendor/guzzlehttp/psr7/src/functions.php
<?php
namespace GuzzleHttp\Psr7;
use Psr\Http\Message\MessageInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\StreamInterface;
use Psr\Http\Message\UriInterface;
/**
* Returns the string representation of an HTTP message.
*
* @param MessageInterface $message Message to convert to a string.
*
* @return string
*/
function str(MessageInterface $message)
{
if ($message instanceof RequestInterface) {
$msg = trim($message->getMethod() . ' '
. $message->getRequestTarget())
. ' HTTP/' . $message->getProtocolVersion();
if (!$message->hasHeader('host')) {
$msg .= "\r\nHost: " . $message->getUri()->getHost();
}
} elseif ($message instanceof ResponseInterface) {
$msg = 'HTTP/' . $message->getProtocolVersion() . ' '
. $message->getStatusCode() . ' '
. $message->getReasonPhrase();
} else {
throw new \InvalidArgumentException('Unknown message type');
}
foreach ($message->getHeaders() as $name => $values) {
$msg .= "\r\n{$name}: " . implode(', ', $values);
}
return "{$msg}\r\n\r\n" . $message->getBody();
}
/**
* Returns a UriInterface for the given value.
*
* This function accepts a string or {@see Psr\Http\Message\UriInterface} and
* returns a UriInterface for the given value. If the value is already a
* `UriInterface`, it is returned as-is.
*
* @param string|UriInterface $uri
*
* @return UriInterface
* @throws \InvalidArgumentException
*/
function uri_for($uri)
{
if ($uri instanceof UriInterface) {
return $uri;
} elseif (is_string($uri)) {
return new Uri($uri);
}
throw new \InvalidArgumentException('URI must be a string or UriInterface');
}
/**
* Create a new stream based on the input type.
*
* Options is an associative array that can contain the following keys:
* - metadata: Array of custom metadata.
* - size: Size of the stream.
*
* @param resource|string|StreamInterface $resource Entity body data
* @param array $options Additional options
*
* @return Stream
* @throws \InvalidArgumentException if the $resource arg is not valid.
*/
function stream_for($resource = '', array $options = [])
{
switch (gettype($resource)) {
case 'string':
$stream = fopen('php://temp', 'r+');
if ($resource !== '') {
fwrite($stream, $resource);
fseek($stream, 0);
}
return new Stream($stream, $options);
case 'resource':
return new Stream($resource, $options);
case 'object':
if ($resource instanceof StreamInterface) {
return $resource;
} elseif ($resource instanceof \Iterator) {
return new PumpStream(function () use ($resource) {
if (!$resource->valid()) {
return false;
}
$result = $resource->current();
$resource->next();
return $result;
}, $options);
} elseif (method_exists($resource, '__toString')) {
return stream_for((string) $resource, $options);
}
break;
case 'NULL':
return new Stream(fopen('php://temp', 'r+'), $options);
}
if (is_callable($resource)) {
return new PumpStream($resource, $options);
}
throw new \InvalidArgumentException('Invalid resource type: ' . gettype($resource));
}
/**
* Parse an array of header values containing ";" separated data into an
* array of associative arrays representing the header key value pair
* data of the header. When a parameter does not contain a value, but just
* contains a key, this function will inject a key with a '' string value.
*
* @param string|array $header Header to parse into components.
*
* @return array Returns the parsed header values.
*/
function parse_header($header)
{
static $trimmed = "\"' \n\t\r";
$params = $matches = [];
foreach (normalize_header($header) as $val) {
$part = [];
foreach (preg_split('/;(?=([^"]*"[^"]*")*[^"]*$)/', $val) as $kvp) {
if (preg_match_all('/<[^>]+>|[^=]+/', $kvp, $matches)) {
$m = $matches[0];
if (isset($m[1])) {
$part[trim($m[0], $trimmed)] = trim($m[1], $trimmed);
} else {
$part[] = trim($m[0], $trimmed);
}
}
}
if ($part) {
$params[] = $part;
}
}
return $params;
}
/**
* Converts an array of header values that may contain comma separated
* headers into an array of headers with no comma separated values.
*
* @param string|array $header Header to normalize.
*
* @return array Returns the normalized header field values.
*/
function normalize_header($header)
{
if (!is_array($header)) {
return array_map('trim', explode(',', $header));
}
$result = [];
foreach ($header as $value) {
foreach ((array) $value as $v) {
if (strpos($v, ',') === false) {
$result[] = $v;
continue;
}
foreach (preg_split('/,(?=([^"]*"[^"]*")*[^"]*$)/', $v) as $vv) {
$result[] = trim($vv);
}
}
}
return $result;
}
/**
* Clone and modify a request with the given changes.
*
* The changes can be one of:
* - method: (string) Changes the HTTP method.
* - set_headers: (array) Sets the given headers.
* - remove_headers: (array) Remove the given headers.
* - body: (mixed) Sets the given body.
* - uri: (UriInterface) Set the URI.
* - query: (string) Set the query string value of the URI.
* - version: (string) Set the protocol version.
*
* @param RequestInterface $request Request to clone and modify.
* @param array $changes Changes to apply.
*
* @return RequestInterface
*/
function modify_request(RequestInterface $request, array $changes)
{
if (!$changes) {
return $request;
}
$headers = $request->getHeaders();
if (!isset($changes['uri'])) {
$uri = $request->getUri();
} else {
// Remove the host header if one is on the URI
if ($host = $changes['uri']->getHost()) {
$changes['set_headers']['Host'] = $host;
if ($port = $changes['uri']->getPort()) {
$standardPorts = ['http' => 80, 'https' => 443];
$scheme = $changes['uri']->getScheme();
if (isset($standardPorts[$scheme]) && $port != $standardPorts[$scheme]) {
$changes['set_headers']['Host'] .= ':'.$port;
}
}
}
$uri = $changes['uri'];
}
if (!empty($changes['remove_headers'])) {
$headers = _caseless_remove($changes['remove_headers'], $headers);
}
if (!empty($changes['set_headers'])) {
$headers = _caseless_remove(array_keys($changes['set_headers']), $headers);
$headers = $changes['set_headers'] + $headers;
}
if (isset($changes['query'])) {
$uri = $uri->withQuery($changes['query']);
}
return new Request(
isset($changes['method']) ? $changes['method'] : $request->getMethod(),
$uri,
$headers,
isset($changes['body']) ? $changes['body'] : $request->getBody(),
isset($changes['version'])
? $changes['version']
: $request->getProtocolVersion()
);
}
/**
* Attempts to rewind a message body and throws an exception on failure.
*
* The body of the message will only be rewound if a call to `tell()` returns a
* value other than `0`.
*
* @param MessageInterface $message Message to rewind
*
* @throws \RuntimeException
*/
function rewind_body(MessageInterface $message)
{
$body = $message->getBody();
if ($body->tell()) {
$body->rewind();
}
}
/**
* Safely opens a PHP stream resource using a filename.
*
* When fopen fails, PHP normally raises a warning. This function adds an
* error handler that checks for errors and throws an exception instead.
*
* @param string $filename File to open
* @param string $mode Mode used to open the file
*
* @return resource
* @throws \RuntimeException if the file cannot be opened
*/
function try_fopen($filename, $mode)
{
$ex = null;
set_error_handler(function () use ($filename, $mode, &$ex) {
$ex = new \RuntimeException(sprintf(
'Unable to open %s using mode %s: %s',
$filename,
$mode,
func_get_args()[1]
));
});
$handle = fopen($filename, $mode);
restore_error_handler();
if ($ex) {
/** @var $ex \RuntimeException */
throw $ex;
}
return $handle;
}
/**
* Copy the contents of a stream into a string until the given number of
* bytes have been read.
*
* @param StreamInterface $stream Stream to read
* @param int $maxLen Maximum number of bytes to read. Pass -1
* to read the entire stream.
* @return string
* @throws \RuntimeException on error.
*/
function copy_to_string(StreamInterface $stream, $maxLen = -1)
{
$buffer = '';
if ($maxLen === -1) {
while (!$stream->eof()) {
$buf = $stream->read(1048576);
// Using a loose equality here to match on '' and false.
if ($buf == null) {
break;
}
$buffer .= $buf;
}
return $buffer;
}
$len = 0;
while (!$stream->eof() && $len < $maxLen) {
$buf = $stream->read($maxLen - $len);
// Using a loose equality here to match on '' and false.
if ($buf == null) {
break;
}
$buffer .= $buf;
$len = strlen($buffer);
}
return $buffer;
}
/**
* Copy the contents of a stream into another stream until the given number
* of bytes have been read.
*
* @param StreamInterface $source Stream to read from
* @param StreamInterface $dest Stream to write to
* @param int $maxLen Maximum number of bytes to read. Pass -1
* to read the entire stream.
*
* @throws \RuntimeException on error.
*/
function copy_to_stream(
StreamInterface $source,
StreamInterface $dest,
$maxLen = -1
) {
if ($maxLen === -1) {
while (!$source->eof()) {
if (!$dest->write($source->read(1048576))) {
break;
}
}
return;
}
$bytes = 0;
while (!$source->eof()) {
$buf = $source->read($maxLen - $bytes);
if (!($len = strlen($buf))) {
break;
}
$bytes += $len;
$dest->write($buf);
if ($bytes == $maxLen) {
break;
}
}
}
/**
* Calculate a hash of a Stream
*
* @param StreamInterface $stream Stream to calculate the hash for
* @param string $algo Hash algorithm (e.g. md5, crc32, etc)
* @param bool $rawOutput Whether or not to use raw output
*
* @return string Returns the hash of the stream
* @throws \RuntimeException on error.
*/
function hash(
StreamInterface $stream,
$algo,
$rawOutput = false
) {
$pos = $stream->tell();
if ($pos > 0) {
$stream->rewind();
}
$ctx = hash_init($algo);
while (!$stream->eof()) {
hash_update($ctx, $stream->read(1048576));
}
$out = hash_final($ctx, (bool) $rawOutput);
$stream->seek($pos);
return $out;
}
/**
* Read a line from the stream up to the maximum allowed buffer length
*
* @param StreamInterface $stream Stream to read from
* @param int $maxLength Maximum buffer length
*
* @return string|bool
*/
function readline(StreamInterface $stream, $maxLength = null)
{
$buffer = '';
$size = 0;
while (!$stream->eof()) {
// Using a loose equality here to match on '' and false.
if (null == ($byte = $stream->read(1))) {
return $buffer;
}
$buffer .= $byte;
// Break when a new line is found or the max length - 1 is reached
if ($byte == PHP_EOL || ++$size == $maxLength - 1) {
break;
}
}
return $buffer;
}
/**
* Parses a request message string into a request object.
*
* @param string $message Request message string.
*
* @return Request
*/
function parse_request($message)
{
$data = _parse_message($message);
$matches = [];
if (!preg_match('/^[a-zA-Z]+\s+([a-zA-Z]+:\/\/|\/).*/', $data['start-line'], $matches)) {
throw new \InvalidArgumentException('Invalid request string');
}
$parts = explode(' ', $data['start-line'], 3);
$version = isset($parts[2]) ? explode('/', $parts[2])[1] : '1.1';
$request = new Request(
$parts[0],
$matches[1] === '/' ? _parse_request_uri($parts[1], $data['headers']) : $parts[1],
$data['headers'],
$data['body'],
$version
);
return $matches[1] === '/' ? $request : $request->withRequestTarget($parts[1]);
}
/**
* Parses a response message string into a response object.
*
* @param string $message Response message string.
*
* @return Response
*/
function parse_response($message)
{
$data = _parse_message($message);
if (!preg_match('/^HTTP\/.* [0-9]{3} .*/', $data['start-line'])) {
throw new \InvalidArgumentException('Invalid response string');
}
$parts = explode(' ', $data['start-line'], 3);
return new Response(
$parts[1],
$data['headers'],
$data['body'],
explode('/', $parts[0])[1],
isset($parts[2]) ? $parts[2] : null
);
}
/**
* Parse a query string into an associative array.
*
* If multiple values are found for the same key, the value of that key
* value pair will become an array. This function does not parse nested
* PHP style arrays into an associative array (e.g., foo[a]=1&foo[b]=2 will
* be parsed into ['foo[a]' => '1', 'foo[b]' => '2']).
*
* @param string $str Query string to parse
* @param bool|string $urlEncoding How the query string is encoded
*
* @return array
*/
function parse_query($str, $urlEncoding = true)
{
$result = [];
if ($str === '') {
return $result;
}
if ($urlEncoding === true) {
$decoder = function ($value) {
return rawurldecode(str_replace('+', ' ', $value));
};
} elseif ($urlEncoding == PHP_QUERY_RFC3986) {
$decoder = 'rawurldecode';
} elseif ($urlEncoding == PHP_QUERY_RFC1738) {
$decoder = 'urldecode';
} else {
$decoder = function ($str) { return $str; };
}
foreach (explode('&', $str) as $kvp) {
$parts = explode('=', $kvp, 2);
$key = $decoder($parts[0]);
$value = isset($parts[1]) ? $decoder($parts[1]) : null;
if (!isset($result[$key])) {
$result[$key] = $value;
} else {
if (!is_array($result[$key])) {
$result[$key] = [$result[$key]];
}
$result[$key][] = $value;
}
}
return $result;
}
/**
* Build a query string from an array of key value pairs.
*
* This function can use the return value of parseQuery() to build a query
* string. This function does not modify the provided keys when an array is
* encountered (like http_build_query would).
*
* @param array $params Query string parameters.
* @param int|false $encoding Set to false to not encode, PHP_QUERY_RFC3986
* to encode using RFC3986, or PHP_QUERY_RFC1738
* to encode using RFC1738.
* @return string
*/
function build_query(array $params, $encoding = PHP_QUERY_RFC3986)
{
if (!$params) {
return '';
}
if ($encoding === false) {
$encoder = function ($str) { return $str; };
} elseif ($encoding == PHP_QUERY_RFC3986) {
$encoder = 'rawurlencode';
} elseif ($encoding == PHP_QUERY_RFC1738) {
$encoder = 'urlencode';
} else {
throw new \InvalidArgumentException('Invalid type');
}
$qs = '';
foreach ($params as $k => $v) {
$k = $encoder($k);
if (!is_array($v)) {
$qs .= $k;
if ($v !== null) {
$qs .= '=' . $encoder($v);
}
$qs .= '&';
} else {
foreach ($v as $vv) {
$qs .= $k;
if ($vv !== null) {
$qs .= '=' . $encoder($vv);
}
$qs .= '&';
}
}
}
return $qs ? (string) substr($qs, 0, -1) : '';
}
/**
* Determines the mimetype of a file by looking at its extension.
*
* @param $filename
*
* @return null|string
*/
function mimetype_from_filename($filename)
{
return mimetype_from_extension(pathinfo($filename, PATHINFO_EXTENSION));
}
/**
* Maps a file extensions to a mimetype.
*
* @param $extension string The file extension.
*
* @return string|null
* @link http://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x/conf/mime.types
*/
function mimetype_from_extension($extension)
{
static $mimetypes = [
'7z' => 'application/x-7z-compressed',
'aac' => 'audio/x-aac',
'ai' => 'application/postscript',
'aif' => 'audio/x-aiff',
'asc' => 'text/plain',
'asf' => 'video/x-ms-asf',
'atom' => 'application/atom+xml',
'avi' => 'video/x-msvideo',
'bmp' => 'image/bmp',
'bz2' => 'application/x-bzip2',
'cer' => 'application/pkix-cert',
'crl' => 'application/pkix-crl',
'crt' => 'application/x-x509-ca-cert',
'css' => 'text/css',
'csv' => 'text/csv',
'cu' => 'application/cu-seeme',
'deb' => 'application/x-debian-package',
'doc' => 'application/msword',
'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
'dvi' => 'application/x-dvi',
'eot' => 'application/vnd.ms-fontobject',
'eps' => 'application/postscript',
'epub' => 'application/epub+zip',
'etx' => 'text/x-setext',
'flac' => 'audio/flac',
'flv' => 'video/x-flv',
'gif' => 'image/gif',
'gz' => 'application/gzip',
'htm' => 'text/html',
'html' => 'text/html',
'ico' => 'image/x-icon',
'ics' => 'text/calendar',
'ini' => 'text/plain',
'iso' => 'application/x-iso9660-image',
'jar' => 'application/java-archive',
'jpe' => 'image/jpeg',
'jpeg' => 'image/jpeg',
'jpg' => 'image/jpeg',
'js' => 'text/javascript',
'json' => 'application/json',
'latex' => 'application/x-latex',
'log' => 'text/plain',
'm4a' => 'audio/mp4',
'm4v' => 'video/mp4',
'mid' => 'audio/midi',
'midi' => 'audio/midi',
'mov' => 'video/quicktime',
'mp3' => 'audio/mpeg',
'mp4' => 'video/mp4',
'mp4a' => 'audio/mp4',
'mp4v' => 'video/mp4',
'mpe' => 'video/mpeg',
'mpeg' => 'video/mpeg',
'mpg' => 'video/mpeg',
'mpg4' => 'video/mp4',
'oga' => 'audio/ogg',
'ogg' => 'audio/ogg',
'ogv' => 'video/ogg',
'ogx' => 'application/ogg',
'pbm' => 'image/x-portable-bitmap',
'pdf' => 'application/pdf',
'pgm' => 'image/x-portable-graymap',
'png' => 'image/png',
'pnm' => 'image/x-portable-anymap',
'ppm' => 'image/x-portable-pixmap',
'ppt' => 'application/vnd.ms-powerpoint',
'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
'ps' => 'application/postscript',
'qt' => 'video/quicktime',
'rar' => 'application/x-rar-compressed',
'ras' => 'image/x-cmu-raster',
'rss' => 'application/rss+xml',
'rtf' => 'application/rtf',
'sgm' => 'text/sgml',
'sgml' => 'text/sgml',
'svg' => 'image/svg+xml',
'swf' => 'application/x-shockwave-flash',
'tar' => 'application/x-tar',
'tif' => 'image/tiff',
'tiff' => 'image/tiff',
'torrent' => 'application/x-bittorrent',
'ttf' => 'application/x-font-ttf',
'txt' => 'text/plain',
'wav' => 'audio/x-wav',
'webm' => 'video/webm',
'wma' => 'audio/x-ms-wma',
'wmv' => 'video/x-ms-wmv',
'woff' => 'application/x-font-woff',
'wsdl' => 'application/wsdl+xml',
'xbm' => 'image/x-xbitmap',
'xls' => 'application/vnd.ms-excel',
'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
'xml' => 'application/xml',
'xpm' => 'image/x-xpixmap',
'xwd' => 'image/x-xwindowdump',
'yaml' => 'text/yaml',
'yml' => 'text/yaml',
'zip' => 'application/zip',
];
$extension = strtolower($extension);
return isset($mimetypes[$extension])
? $mimetypes[$extension]
: null;
}
/**
* Parses an HTTP message into an associative array.
*
* The array contains the "start-line" key containing the start line of
* the message, "headers" key containing an associative array of header
* array values, and a "body" key containing the body of the message.
*
* @param string $message HTTP request or response to parse.
*
* @return array
* @internal
*/
function _parse_message($message)
{
if (!$message) {
throw new \InvalidArgumentException('Invalid message');
}
// Iterate over each line in the message, accounting for line endings
$lines = preg_split('/(\\r?\\n)/', $message, -1, PREG_SPLIT_DELIM_CAPTURE);
$result = ['start-line' => array_shift($lines), 'headers' => [], 'body' => ''];
array_shift($lines);
for ($i = 0, $totalLines = count($lines); $i < $totalLines; $i += 2) {
$line = $lines[$i];
// If two line breaks were encountered, then this is the end of body
if (empty($line)) {
if ($i < $totalLines - 1) {
$result['body'] = implode('', array_slice($lines, $i + 2));
}
break;
}
if (strpos($line, ':')) {
$parts = explode(':', $line, 2);
$key = trim($parts[0]);
$value = isset($parts[1]) ? trim($parts[1]) : '';
$result['headers'][$key][] = $value;
}
}
return $result;
}
/**
* Constructs a URI for an HTTP request message.
*
* @param string $path Path from the start-line
* @param array $headers Array of headers (each value an array).
*
* @return string
* @internal
*/
function _parse_request_uri($path, array $headers)
{
$hostKey = array_filter(array_keys($headers), function ($k) {
return strtolower($k) === 'host';
});
// If no host is found, then a full URI cannot be constructed.
if (!$hostKey) {
return $path;
}
$host = $headers[reset($hostKey)][0];
$scheme = substr($host, -4) === ':443' ? 'https' : 'http';
return $scheme . '://' . $host . '/' . ltrim($path, '/');
}
/** @internal */
function _caseless_remove($keys, array $data)
{
$result = [];
foreach ($keys as &$key) {
$key = strtolower($key);
}
foreach ($data as $k => $v) {
if (!in_array(strtolower($k), $keys)) {
$result[$k] = $v;
}
}
return $result;
}