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vbbs/app/Classes/Parser.php
2019-07-31 20:19:41 +08:00

65 lines
1.3 KiB
PHP

<?php
namespace App\Classes;
/**
* The Frame Parser looks into frames for ESC codes that renders dynamic information
*/
abstract class Parser
{
// Fields in the frame
public $fields = [];
// Magic Fields that are pre-filled
protected $fieldmap = [
'a'=>'address#',
'd'=>'%date',
];
// Position array of frame control chars
protected $frame_data = [];
// Position array of frame chars
protected $frame_content = [];
// Parsed frame, ready to send to client
public $output = '';
public function __construct(string $content,int $width,int $startline=1)
{
$this->fields = collect();
$this->output = $this->parse($startline,$content,$width);
}
public function __toString(): string
{
return $this->output;
}
/**
* Return the character at a specific position
*
* @param int $x
* @param int $y
* @return string
*/
public function char(int $x,int $y): string
{
$y += 1;
return (isset($this->frame_content[$y]) AND isset($this->frame_content[$y][$x]))
? $this->frame_content[$y][$x]
: ' ';
}
public function attr(int $x,int $y)
{
$y += 1;
return (isset($this->frame_data[$y]) AND isset($this->frame_data[$y][$x]))
? implode(';',$this->frame_data[$y][$x]).'m'
: '-';
}
abstract protected function parse(int $startline,string $content,int $width): string;
}