107 lines
3.3 KiB
PHP
107 lines
3.3 KiB
PHP
<?php
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class nyaml {
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private $lines;
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public function file($fileName) {
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//Parse file
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return $this->string(file_get_contents($fileName));
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}
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public function string($nyaml) {
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//Parse string
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//Preprocessing
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$nyaml = preg_replace("/(\n|^)\s*\#.*?\n/", "\n", $nyaml); //Cleaning from one-line comments
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$nyaml = str_replace("\r", "", $nyaml); //Fix new lines
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$nyaml = str_replace("\n\n", "\n", $nyaml); //Cleaning clear lines
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$nyaml = trim($nyaml,"\n");
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$this->lines = explode("\n", $nyaml);
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//Parsing
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return $this->parse(0);
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}
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private function parse($level) {
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$return=array();
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$linelevel = $level;
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while (count($this->lines)>0) {
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$line = array_shift($this->lines);
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$linelevel = $this->countLevel($line);
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if ($linelevel<$level) { //If next line from root node stop parsing
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array_unshift($this->lines, $line);
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return $return;
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}
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if (substr($line,-1,1)==":") { //If new node
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$key = substr($line, 0, strlen($line)-1);
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$value = $this->parse($linelevel+1);
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$return[trim($key)] = $value;
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} elseif (strpos($line,":")!==false) { //If key-value pair
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list($key, $value) = explode(":", $line, 2);
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$return[trim($key)] = $this->parseValue($value);
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} else { //If just value
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$return[] = trim($line);
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}
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}
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return $return;
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}
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private function parseValue($value) {
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$value = trim($value);
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switch (substr($value,0,1)) {
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case "\"":
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return substr($value,1,(strlen($value)-2));
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break;
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case "'":
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return substr($value,1,(strlen($value)-2));
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break;
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case "[":
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$result = $this->explode(",", substr($value,1,(strlen($value)-2)));
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$result = array_map(array($this, "parseValue"), $result);
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return $result;
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break;
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default:
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return $value;
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}
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}
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private function explode($letter, $string) {
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//smart exploding string
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$quotes = array("\"","'","[","]");
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$quote = '';
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$result = array();
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$token = "";
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for ($i = 0; $i<strlen($string); $i++) {
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$symbol = substr($string,$i,1);
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if ((in_array($symbol, $quotes)) && ($quote == '')) {
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if ($symbol == '[') {
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$symbol = ']';
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}
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$quote = $symbol;
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} elseif ((in_array($symbol, $quotes)) && ($quote == $symbol)) {
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if ($quote == ']') {
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$token = "[$token]";
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}
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$quote = '';
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} elseif (($symbol == $letter) && ($quote=='')) {
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$result[] = $token;
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$token = '';
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} else {
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$token .= $symbol;
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}
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}
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if ($token!='') {
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$result[] = $token;
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}
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return $result;
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}
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private function countLevel($string) {
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//Counting level by indenting
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return (strlen($string) - strlen(ltrim($string,"\t ")));
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}
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}
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