From 7ad9f272a482802da2d43fe83841adbe9bcd8cb4 Mon Sep 17 00:00:00 2001
From: derchris
Date: Sat, 2 Feb 2019 15:35:30 +0100
Subject: update less.php to PHP 7.x compatible fork

---
 lib/less.php/Exception/Chunk.php | 203 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 203 insertions(+)
 create mode 100644 lib/less.php/Exception/Chunk.php

(limited to 'lib/less.php/Exception/Chunk.php')

diff --git a/lib/less.php/Exception/Chunk.php b/lib/less.php/Exception/Chunk.php
new file mode 100644
index 0000000..b9f0a5e
--- /dev/null
+++ b/lib/less.php/Exception/Chunk.php
@@ -0,0 +1,203 @@
+<?php
+
+/**
+ * Chunk Exception
+ *
+ * @package Less
+ * @subpackage exception
+ */
+class Less_Exception_Chunk extends Less_Exception_Parser{
+
+
+	protected $parserCurrentIndex = 0;
+
+	protected $emitFrom = 0;
+
+	protected $input_len;
+
+
+	/**
+	 * Constructor
+	 *
+	 * @param string $input
+	 * @param Exception $previous Previous exception
+	 * @param integer $index The current parser index
+	 * @param Less_FileInfo|string $currentFile The file
+	 * @param integer $code The exception code
+	 */
+	public function __construct($input, Exception $previous = null, $index = null, $currentFile = null, $code = 0){
+
+		$this->message = 'ParseError: Unexpected input'; //default message
+
+		$this->index = $index;
+
+		$this->currentFile = $currentFile;
+
+		$this->input = $input;
+		$this->input_len = strlen($input);
+
+		$this->Chunks();
+		$this->genMessage();
+	}
+
+
+	/**
+	 * See less.js chunks()
+	 * We don't actually need the chunks
+	 *
+	 */
+	protected function Chunks(){
+		$level = 0;
+		$parenLevel = 0;
+		$lastMultiCommentEndBrace = null;
+		$lastOpening = null;
+		$lastMultiComment = null;
+		$lastParen = null;
+
+		for( $this->parserCurrentIndex = 0; $this->parserCurrentIndex < $this->input_len; $this->parserCurrentIndex++ ){
+			$cc = $this->CharCode($this->parserCurrentIndex);
+			if ((($cc >= 97) && ($cc <= 122)) || ($cc < 34)) {
+				// a-z or whitespace
+				continue;
+			}
+
+			switch ($cc) {
+
+				// (
+				case 40:
+					$parenLevel++;
+					$lastParen = $this->parserCurrentIndex;
+					break;
+
+				// )
+				case 41:
+					$parenLevel--;
+					if( $parenLevel < 0 ){
+						return $this->fail("missing opening `(`");
+					}
+					break;
+
+				// ;
+				case 59:
+					//if (!$parenLevel) { $this->emitChunk();	}
+					break;
+
+				// {
+				case 123:
+					$level++;
+					$lastOpening = $this->parserCurrentIndex;
+					break;
+
+				// }
+				case 125:
+					$level--;
+					if( $level < 0 ){
+						return $this->fail("missing opening `{`");
+
+					}
+					//if (!$level && !$parenLevel) { $this->emitChunk(); }
+					break;
+				// \
+				case 92:
+					if ($this->parserCurrentIndex < $this->input_len - 1) { $this->parserCurrentIndex++; break; }
+					return $this->fail("unescaped `\\`");
+
+				// ", ' and `
+				case 34:
+				case 39:
+				case 96:
+					$matched = 0;
+					$currentChunkStartIndex = $this->parserCurrentIndex;
+					for ($this->parserCurrentIndex = $this->parserCurrentIndex + 1; $this->parserCurrentIndex < $this->input_len; $this->parserCurrentIndex++) {
+						$cc2 = $this->CharCode($this->parserCurrentIndex);
+						if ($cc2 > 96) { continue; }
+						if ($cc2 == $cc) { $matched = 1; break; }
+						if ($cc2 == 92) {        // \
+							if ($this->parserCurrentIndex == $this->input_len - 1) {
+								return $this->fail("unescaped `\\`");
+							}
+							$this->parserCurrentIndex++;
+						}
+					}
+					if ($matched) { break; }
+					return $this->fail("unmatched `" . chr($cc) . "`", $currentChunkStartIndex);
+
+				// /, check for comment
+				case 47:
+					if ($parenLevel || ($this->parserCurrentIndex == $this->input_len - 1)) { break; }
+					$cc2 = $this->CharCode($this->parserCurrentIndex+1);
+					if ($cc2 == 47) {
+						// //, find lnfeed
+						for ($this->parserCurrentIndex = $this->parserCurrentIndex + 2; $this->parserCurrentIndex < $this->input_len; $this->parserCurrentIndex++) {
+							$cc2 = $this->CharCode($this->parserCurrentIndex);
+							if (($cc2 <= 13) && (($cc2 == 10) || ($cc2 == 13))) { break; }
+						}
+					} else if ($cc2 == 42) {
+						// /*, find */
+						$lastMultiComment = $currentChunkStartIndex = $this->parserCurrentIndex;
+						for ($this->parserCurrentIndex = $this->parserCurrentIndex + 2; $this->parserCurrentIndex < $this->input_len - 1; $this->parserCurrentIndex++) {
+							$cc2 = $this->CharCode($this->parserCurrentIndex);
+							if ($cc2 == 125) { $lastMultiCommentEndBrace = $this->parserCurrentIndex; }
+							if ($cc2 != 42) { continue; }
+							if ($this->CharCode($this->parserCurrentIndex+1) == 47) { break; }
+						}
+						if ($this->parserCurrentIndex == $this->input_len - 1) {
+							return $this->fail("missing closing `*/`", $currentChunkStartIndex);
+						}
+					}
+					break;
+
+				// *, check for unmatched */
+				case 42:
+					if (($this->parserCurrentIndex < $this->input_len - 1) && ($this->CharCode($this->parserCurrentIndex+1) == 47)) {
+						return $this->fail("unmatched `/*`");
+					}
+					break;
+			}
+		}
+
+		if( $level !== 0 ){
+			if( ($lastMultiComment > $lastOpening) && ($lastMultiCommentEndBrace > $lastMultiComment) ){
+				return $this->fail("missing closing `}` or `*/`", $lastOpening);
+			} else {
+				return $this->fail("missing closing `}`", $lastOpening);
+			}
+		} else if ( $parenLevel !== 0 ){
+			return $this->fail("missing closing `)`", $lastParen);
+		}
+
+
+		//chunk didn't fail
+
+
+		//$this->emitChunk(true);
+	}
+
+	public function CharCode($pos){
+		return ord($this->input[$pos]);
+	}
+
+
+	public function fail( $msg, $index = null ){
+
+		if( !$index ){
+			$this->index = $this->parserCurrentIndex;
+		}else{
+			$this->index = $index;
+		}
+		$this->message = 'ParseError: '.$msg;
+	}
+
+
+	/*
+	function emitChunk( $force = false ){
+		$len = $this->parserCurrentIndex - $this->emitFrom;
+		if ((($len < 512) && !$force) || !$len) {
+			return;
+		}
+		$chunks[] = substr($this->input, $this->emitFrom, $this->parserCurrentIndex + 1 - $this->emitFrom );
+		$this->emitFrom = $this->parserCurrentIndex + 1;
+	}
+	*/
+
+}
-- 
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