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 ++++++++++++++++++++++++++++++++++++ lib/less.php/Exception/Compiler.php | 11 ++ lib/less.php/Exception/Parser.php | 125 ++++++++++++++++++++++ 3 files changed, 339 insertions(+) create mode 100644 lib/less.php/Exception/Chunk.php create mode 100644 lib/less.php/Exception/Compiler.php create mode 100644 lib/less.php/Exception/Parser.php (limited to 'lib/less.php/Exception') 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 @@ +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; + } + */ + +} diff --git a/lib/less.php/Exception/Compiler.php b/lib/less.php/Exception/Compiler.php new file mode 100644 index 0000000..b645f61 --- /dev/null +++ b/lib/less.php/Exception/Compiler.php @@ -0,0 +1,11 @@ +previous = $previous; + parent::__construct($message, $code); + } else { + parent::__construct($message, $code, $previous); + } + + $this->currentFile = $currentFile; + $this->index = $index; + + $this->genMessage(); + } + + + protected function getInput(){ + + if( !$this->input && $this->currentFile && $this->currentFile['filename'] && file_exists($this->currentFile['filename']) ){ + $this->input = file_get_contents( $this->currentFile['filename'] ); + } + } + + + + /** + * Converts the exception to string + * + * @return string + */ + public function genMessage(){ + + if( $this->currentFile && $this->currentFile['filename'] ){ + $this->message .= ' in '.basename($this->currentFile['filename']); + } + + if( $this->index !== null ){ + $this->getInput(); + if( $this->input ){ + $line = self::getLineNumber(); + $this->message .= ' on line '.$line.', column '.self::getColumn(); + + $lines = explode("\n",$this->input); + + $count = count($lines); + $start_line = max(0, $line-3); + $last_line = min($count, $start_line+6); + $num_len = strlen($last_line); + for( $i = $start_line; $i < $last_line; $i++ ){ + $this->message .= "\n".str_pad($i+1,$num_len,'0',STR_PAD_LEFT).'| '.$lines[$i]; + } + } + } + + } + + /** + * Returns the line number the error was encountered + * + * @return integer + */ + public function getLineNumber(){ + if( $this->index ){ + // https://bugs.php.net/bug.php?id=49790 + if (ini_get("mbstring.func_overload")) { + return substr_count(substr($this->input, 0, $this->index), "\n") + 1; + } else { + return substr_count($this->input, "\n", 0, $this->index) + 1; + } + } + return 1; + } + + + /** + * Returns the column the error was encountered + * + * @return integer + */ + public function getColumn(){ + + $part = substr($this->input, 0, $this->index); + $pos = strrpos($part,"\n"); + return $this->index - $pos; + } + +} -- cgit v1.2.3