Differential D20975 Diff 49977 src/aphront/headerparser/AphrontHTTPHeaderParser.php

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src/aphront/headerparser/AphrontHTTPHeaderParser.php

This file was added.

				<?php

				final class AphrontHTTPHeaderParser extends Phobject {

				private $name;
				private $content;
				private $pairs;

				public function parseRawHeader($raw_header) {
				$this->name = null;
				$this->content = null;

				$parts = explode(':', $raw_header, 2);
				$this->name = trim($parts[0]);
				if (count($parts) > 1) {
				$this->content = trim($parts[1]);
				}

				$this->pairs = null;

				return $this;
				}

				public function getHeaderName() {
				$this->requireParse();
				return $this->name;
				}

				public function getHeaderContent() {
				$this->requireParse();
				return $this->content;
				}

				public function getHeaderContentAsPairs() {
				$content = $this->getHeaderContent();


				$state = 'prekey';
				$length = strlen($content);

				$pair_name = null;
				$pair_value = null;

				$pairs = array();
				$ii = 0;
				while ($ii < $length) {
				$c = $content[$ii];

				switch ($state) {
				case 'prekey';
				// We're eating space in front of a key.
				if ($c == ' ') {
				$ii++;
				break;
				}
				$pair_name = '';
				$state = 'key';
				break;
				case 'key';
				// We're parsing a key name until we find "=" or ";".
				if ($c == ';') {
				$state = 'done';
				break;
				}

				if ($c == '=') {
				$ii++;
				$state = 'value';
				break;
				}

				$ii++;
				$pair_name .= $c;
				break;
				case 'value':
				// We found an "=", so now figure out if the value is quoted
				// or not.
				if ($c == '"') {
				$ii++;
				$state = 'quoted';
				break;
				}
				$state = 'unquoted';
				break;
				case 'quoted':
				// We're in a quoted string, parse until we find the closing quote.
				if ($c == '"') {
				$ii++;
				$state = 'done';
				break;
				}

				$ii++;
				$pair_value .= $c;
				break;
				case 'unquoted':
				// We're in an unquoted string, parse until we find a space or a
				// semicolon.
				if ($c == ' ' \|\| $c == ';') {
				$state = 'done';
				break;
				}
				$ii++;
				$pair_value .= $c;
				break;
				case 'done':
				// We parsed something, so eat any trailing whitespace and semicolons
				// and look for a new value.
				if ($c == ' ' \|\| $c == ';') {
				$ii++;
				break;
				}

				$pairs[] = array(
				$pair_name,
				$pair_value,
				);

				$pair_name = null;
				$pair_value = null;

				$state = 'prekey';
				break;
				}
				}

				if ($state == 'quoted') {
				throw new Exception(
				pht(
				'Header has unterminated double quote for key "%s".',
				$pair_name));
				}

				if ($pair_name !== null) {
				$pairs[] = array(
				$pair_name,
				$pair_value,
				);
				}

				return $pairs;
				}

				private function requireParse() {
				if ($this->name === null) {
				throw new PhutilInvalidStateException('parseRawHeader');
				}
				}

				}