mirror of
https://github.com/pierre42100/comunic
synced 2024-09-29 03:22:49 +00:00
107 lines
2.7 KiB
PHP
Executable File
107 lines
2.7 KiB
PHP
Executable File
<?php
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class LuminousJSONScanner extends LuminousScanner {
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private $stack = array();
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public function init() {
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$this->add_identifier_mapping('KEYWORD', array('true', 'false', 'null'));
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}
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public function state() {
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if (!empty($this->stack)) return $this->stack[count($this->stack)-1][0];
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else return null;
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}
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private function expecting($x=null) {
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if ($x !== null) {
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if (!empty($this->stack)) $this->stack[count($this->stack)-1][1] = $x;
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}
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if (!empty($this->stack)) return $this->stack[count($this->stack)-1][1];
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else return null;
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}
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function main() {
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while (!$this->eos()) {
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$tok = null;
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$c = $this->peek();
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list($state, $expecting) = array($this->state(), $this->expecting());
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$this->skip_whitespace();
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if ($this->eos()) break;
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if ($this->scan(LuminousTokenPresets::$NUM_REAL) !== null) {
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$tok = 'NUMERIC';
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}
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elseif($this->scan('/[a-zA-Z]\w*/')) {
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$tok = 'IDENT';
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}
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elseif($this->scan(LuminousTokenPresets::$DOUBLE_STR)) {
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$tok = ($state === 'obj' && $expecting === 'key')? 'TYPE' : 'STRING';
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}
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elseif($this->scan('/\[/')) {
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$this->stack[] = array('array', null);
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$tok = 'OPERATOR';
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}
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elseif($this->scan('/\]/')) {
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if ($state === 'array') {
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array_pop($this->stack);
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$tok = 'OPERATOR';
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}
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}
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elseif($this->scan('/\{/')) {
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$this->stack[] = array('obj', 'key');
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$tok = 'OPERATOR';
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}
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elseif($state === 'obj' && $this->scan('/\}/')) {
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array_pop($this->stack);
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$tok = 'OPERATOR';
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}
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elseif($state === 'obj' && $this->scan('/:/')) {
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$this->expecting('value');
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$tok = 'OPERATOR';
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}
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elseif($this->scan('/,/')) {
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if ($state === 'obj') {
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$this->expecting('key');
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$tok = 'OPERATOR';
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}
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elseif($state === 'array') $tok = 'OPERATOR';
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}
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else $this->scan('/./');
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$this->record($this->match(), $tok);
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}
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}
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public static function guess_language($src, $info) {
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// JSON is fairly hard to guess
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$p = 0;
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$src_ = trim($src);
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if (!empty($src_)) {
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$char = $src_[0];
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$char2 = $src_[strlen($src_)-1];
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$str = '"(?>[^"\\\\]+|\\\\.)"';
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// looks like an object or array
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if ( ($char === '[' && $char2 === ']')
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|| ($char === '{' && $char2 === '}'))
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{
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$p += 0.05;
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}
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elseif(preg_match("/^(?:$str|(\d+(\.\d+)?([eE]\d+)?)|true|false|null)$/",
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$src_))
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{
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// just a string or number or value
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$p += 0.1;
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}
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}
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return $p;
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}
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}
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