AI (Adobe Illustrator) Reader

Ai.php

<?php
namespace app\support\lib;

class Rect
{
    protected $left;
    protected $top;
    protected $width;
    protected $height;

    public function __construct($left, $top, $width, $height)
    {
        $this->left = $left;
        $this->top = $top;
        $this->width = $width;
        $this->height = $height;
    }

    public function getSize()
    {
        return (object)[
            'width' => $this->width - $this->left,
            'height' => $this->height - $this->top
        ];
    }

    public function __get($var)
    {
        if (isset($this->$var)) {
            return $this->$var;
        }
        return null;
    }
}

class Operation
{
    /**
     * @url http://partners.adobe.com/public/developer/en/illustrator/sdk/AI7FileFormat.pdf (page 56+)
     *
     * @TODO
     * operation l
     * operation L
     * operation C
     * operation V
     * operation Y
     */
    const OP_MOVE                 = 'm';
    const OP_BEZIER               = 'c';
    const OP_BEZIER_SEGMENT_TO    = 'v';
    const OP_BEZIER_SEGMENT_FROM  = 'y';

    protected $type;
    protected $points = [];

    public function __construct($operation)
    {
        $points = explode(' ', $operation);
        $this->type = array_pop($points);

        foreach ($points as $point) {
            $this->points[] = (double)$point;
        }
    }
}


class Layer
{
    protected $operations = [];
    protected $overlays = [];

    public function __construct($points, $overlays)
    {
        $operations = explode(chr(13), $points);
        foreach ($operations as $op) {
            if (trim($op)) {
                $this->operations[] = new Operation(trim($op));
            }
        }

        preg_match_all('#\/([a-z]+)\s+((?:\/)?[a-z]+)\s*#isu', $overlays, $m);

        for ($i=0; $i<count($m[0]); $i++) {
            $this->overlays[$m[1][$i]] = $m[2][$i];
        }
    }
}


class Ai
{
    protected $title;
    protected $creator;
    protected $path;
    protected $layers;

    public static function createFromFile($file)
    {
        return new static(file_get_contents($file));
    }

    public static function createFromSources($sources)
    {
        return new static($sources);
    }

    public function __construct($sources)
    {
        $this->title    = $this->parse($sources, 'Title');
        $this->creator  = $this->parse($sources, 'Creator');
        $this->path     = $this->readSizes($sources);
        $this->layers   = $this->readLayers($sources);
    }

    public function getTitle()
    {
        return $this->title;
    }

    public function getCreator()
    {
        return $this->creator;
    }

    public function getPath()
    {
        return $this->path;
    }

    public function getLayers()
    {
        return $this->layers;
    }


    protected function readSizes($sources)
    {
        $box = explode(' ', $this->parse($sources, 'BoundingBox'));
        return new Rect($box[0], $box[1], $box[2], $box[3]);
    }

    protected function readLayers($sources)
    {
        $result = [];
        $pattern = '#%AI[0-9]+_Note:<<\s(.*?)\s>>\r1\sXR\s*(.*?)\s*n\r\*U#isu';
        preg_match_all($pattern, $sources, $layers);

        for ($i=0; $i<count($layers[0]); $i++) {
            $result[] = new Layer($layers[2][$i], $layers[1][$i]);
        }
        return $result;
    }

    protected function parse($sources, $meta)
    {
        $pattern = '#%%' . $meta . ':(.*?)\r#isu';
        preg_match_all($pattern, $sources, $m);
        if (isset($m[1][0])) {
            return trim($m[1][0]);
        }
    }
}

@reasecret just like without it.