63 lines
1.8 KiB
PHP
63 lines
1.8 KiB
PHP
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<?php
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namespace LanguageServer;
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use Sabre\Event\Loop;
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use Sabre\Event\EventEmitter;
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abstract class ParsingMode {
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const HEADERS = 1;
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const BODY = 2;
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}
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class LanguageServer extends EventEmitter
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{
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private $input;
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private $output;
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/**
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* @param resource $input The input stream
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* @param resource $output The output stream
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*/
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public function __construct($input, $output)
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{
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$this->input = $input;
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$this->output = $output;
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}
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public function listen()
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{
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$buffer = '';
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$parsingMode = ParsingMode::HEADERS;
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$headers = [];
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$contentLength = 0;
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Loop\addReadStream($this->input, function() use ($buffer, $parsingMode, $headers, $contentLength) {
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$buffer .= fgetc($this->output);
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switch ($parsingMode) {
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case ParsingMode::HEADERS:
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if (substr($buffer, -4) === '\r\n\r\n') {
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$parsingMode = ParsingMode::BODY;
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$contentLength = (int)$headers['Content-Length'];
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$buffer = '';
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} else if (substr($buffer, -2) === '\r\n') {
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$parts = explode(': ', $buffer);
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$headers[$parts[0]] = $parts[1];
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$buffer = '';
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}
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break;
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case ParsingMode::BODY:
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if (strlen($buffer) === $contentLength) {
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$body = json_decode($buffer);
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$this->emit($body->method, [$body->params]);
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$parsingMode = ParsingMode::HEADERS;
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$buffer = '';
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}
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break;
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}
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});
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Loop\run();
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}
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}
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