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https://github.com/envoyr/nginx-configurator.git
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Initial commit
This commit is contained in:
Michał Brzuchalski
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src/Parser.php
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src/Parser.php
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<?php
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/**
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* Created by PhpStorm.
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* User: mbrzuchalski
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* Date: 06.04.16
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* Time: 13:01
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*/
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namespace Madkom\NginxConfigurator;
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use Ferno\Loco\ConcParser;
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use Ferno\Loco\Grammar;
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use Ferno\Loco\GreedyMultiParser;
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use Ferno\Loco\GreedyStarParser;
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use Ferno\Loco\LazyAltParser;
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use Ferno\Loco\ParseFailureException;
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use Ferno\Loco\RegexParser;
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use Ferno\Loco\StringParser;
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use Madkom\NginxConfigurator\Config\Events;
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use Madkom\NginxConfigurator\Config\Http;
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use Madkom\NginxConfigurator\Config\Location;
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use Madkom\NginxConfigurator\Config\Server;
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use Madkom\NginxConfigurator\Config\Upstream;
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use Madkom\NginxConfigurator\Exception\GrammarException;
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use Madkom\NginxConfigurator\Exception\UnrecognizedContextException;
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use Madkom\NginxConfigurator\Node\Context;
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use Madkom\NginxConfigurator\Node\Directive;
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use Madkom\NginxConfigurator\Node\Literal;
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use Madkom\NginxConfigurator\Node\Param;
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use Madkom\NginxConfigurator\Node\RootNode;
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/**
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* Class Parser
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* @package Madkom\NginxConfigurator
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* @author Michał Brzuchalski <m.brzuchalski@madkom.pl>
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*/
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class Parser extends Grammar
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{
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/**
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* Holds parsed filename
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* @var string
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*/
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protected $filename;
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/**
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* Holds parsed string
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* @var string
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*/
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protected $content;
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/**
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* Parser constructor.
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*/
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public function __construct()
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{
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parent::__construct('syntax', [
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'syntax' => new GreedyStarParser(new LazyAltParser(['directive', 'section'])),
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'sections' => new GreedyMultiParser('section', 0, 2),
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'section' => new ConcParser(
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[
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'section-name',
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new LazyAltParser(['space', 'opt-space']),
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new LazyAltParser(['params', new LazyAltParser(['space', 'opt-space'])]),
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new StringParser('{'),
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new LazyAltParser(['space', 'opt-space']),
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new GreedyMultiParser(new LazyAltParser(['directive', 'section']), 0, null),
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new LazyAltParser(['space', 'opt-space']),
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new StringParser('}'),
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new LazyAltParser(['space', 'opt-space']),
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],
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[$this, 'parseSection']
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),
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'section-name' => new RegexParser('/^[a-z0-9\_]+/i'),
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'directives' => new GreedyMultiParser('directive', 0, null),
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'directive' => new LazyAltParser([
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new ConcParser([
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'directive-name',
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'semicolon',
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new LazyAltParser(['space', 'opt-space']),
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], [$this, 'parseDirective']),
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new ConcParser([
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'directive-name',
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'space',
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'params',
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'semicolon',
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new LazyAltParser(['space', 'opt-space']),
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], [$this, 'parseDirective'])
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]),
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'directive-name' => new RegexParser('/^[a-z0-9\_]+/i'),
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'params' => new GreedyMultiParser(new ConcParser(['param', 'opt-space'], function ($param, $space) {
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return $param;
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}), 0, null),
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'param' => new LazyAltParser(['literal', 'param-name']),
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'param-name' => new RegexParser('/^[^\s\r\n\{\}\;\"\']+/i', function ($match) {
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return new Param($match);
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}),
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'literal' => new LazyAltParser([
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new RegexParser('/^"([^"]*)"/', function ($match0, $match1) {
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return new Literal($match1);
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}),
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new RegexParser("/^'([^']*)'/", function ($match0, $match1) {
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return new Literal($match1);
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})
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]),
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'semicolon' => new StringParser(';', function () {
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return null;
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}),
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'space' => new GreedyStarParser('whitespace/comment', function () {
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return null;
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}),
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'whitespace/comment' => new LazyAltParser(['whitespace', 'comment'], function () {
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return null;
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}),
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'comment' => new RegexParser("/^#+([^\r\n]*)/", function () {
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return null;
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}),
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'whitespace' => new RegexParser("/^[ \t\r\n]+/"),
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'opt-space' => new RegexParser("/^[ \t\r\n]?/"),
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'eol' => new LazyAltParser([new StringParser("\r"), new StringParser("\n")], function () {
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return null;
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})
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], function (array $nodes = []) {
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return new RootNode($nodes);
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});
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}
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/**
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* Parses config file
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* @param string $filename
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* @return mixed
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* @throws ParseFailureException
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*/
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public function parseFile(string $filename) : RootNode
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{
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$this->content = null;
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$this->filename = $filename;
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return $this->parse(file_get_contents($filename));
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}
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/**
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* Parses string
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* @param string $string
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* @return mixed
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* @throws ParseFailureException
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*/
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public function parse($string) : RootNode
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{
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$this->content = $string;
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$this->filename = null;
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return parent::parse($string);
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}
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/**
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* Parses section entries
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* @param string $section Section name
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* @param null $space0 Ignored
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* @param Param[] $params Params collection
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* @param null $open Ignored
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* @param null $space1 Ignored
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* @param Directive[] $directives Directives collection
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* @return Context
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* @throws GrammarException
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* @throws UnrecognizedContextException
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*/
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protected function parseSection($section, $space0 = null, $params, $open = null, $space1 = null, $directives) : Context
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{
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switch ($section) {
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case 'server':
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return new Server($directives);
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case 'http':
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return new Http($directives);
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case 'location':
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$modifier = null;
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if (sizeof($params) == 2) {
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list($modifier, $location) = $params;
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} elseif (sizeof($params) == 1) {
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$location = $params[0];
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} else {
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throw new GrammarException(
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sprintf(
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"Location context missing in %s",
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$this->filename ? var_export($this->filename, true) : var_export($this->content, true)
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)
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);
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}
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return new Location($location, $modifier, $directives);
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case 'events':
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return new Events($directives);
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case 'upstream':
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list($upstream) = $params;
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return new Upstream($upstream, $directives);
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}
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throw new UnrecognizedContextException(
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sprintf(
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"Unrecognized context: {$section} found in %s",
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$this->filename ? var_export($this->filename, true) : var_export($this->content, true)
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)
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);
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}
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/**
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* Parses directive
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* @param string $name
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* @param null $space
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* @param array $params
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* @return Directive
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*/
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protected function parseDirective(string $name, $space = null, $params = []) : Directive
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{
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return new Directive($name, is_null($params) ? [] : $params);
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}
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}
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