[TASK] Wrote classes and implemented about 50% of the whole idea.

2010-12-28 19:26:46 +00:00
parent a5c6439d3d
commit bc5b7aeabd
6 changed files with 315 additions and 28 deletions
@@ -0,0 +1,104 @@
+<?php
+/**
+ * This class will be able to convert a file into an image.
+ * @author JPT
+ */
+class FileImageConverter {
+
+	/**
+	 * @var BoxImage
+	 */
+	protected $image;
+
+	/**
+	 * @var CharColorConverter
+	 */
+	protected $colorConverter;
+
+	/**
+	 * Default constructor
+	 * @return void
+	 */
+	public function __construct() {
+		$this->colorConverter = new CharColorConverter();
+	}
+
+	/**
+	 * Processes the given file, returns the filename of the resulting PNG-File.
+	 * @param string $filename
+	 * @return void
+	 * @throws Exception
+	 */
+	public function convertFile($filename) {
+		if(file_exists($filename) === FALSE) throw new Exception("Invalid filename given!");
+
+			//get file data
+		$filesize = filesize($filename);
+		$md5 = md5_file($filename);
+
+		$new_filename = "result.png";
+
+		$header = "";
+		for($i = 0;$i < 255;$i += 5) {
+			$header .= chr($i);
+		}
+		$header .= chr(0);
+		$header .= $filesize;
+		$header .= chr(0);
+		$header .= $md5;
+
+			//header done, now read the file content
+		$content = file_get_contents($filename);
+
+			//get size for the image
+		$size = strlen($header) + 1 + $filesize;
+
+			//create and prepare image
+		$this->image = new BoxImage($size);
+		$this->image->fillImage(0,0,0,127);
+
+			//header first
+		$this->addDataToImage($header);
+
+			//magic pixel
+		$this->image->setCurrentPixel(0,0,0,127);
+		$this->image->movePointer(1);
+
+			//content
+		$this->addDataToImage($content);
+
+			//save image
+		$this->image->writeToFile($new_filename, 0);
+
+			//clean up
+		unset($this->image);
+	}
+
+	/**
+	 * Converts data and adds it to the image.
+	 * @param string $data
+	 * @return void
+	 */
+	protected function addDataToImage($data) {
+		try {
+			$strlen = strlen($data);
+			for($i = 0;$i < $strlen; $i++) {
+				$char = substr($data, $i, 1);
+					//convert char to color
+				list($r, $g, $b) = $this->colorConverter->charToColor($char);
+					//set the pixel
+				$this->image->setCurrentPixel($r, $g, $b, 0);
+					//move the pointer
+				$this->image->movePointer(1);
+			}
+
+		} catch (Exception $e) {
+				//TODO: handle weird shit?
+			echo "Caught Exception:\n";
+			echo $e;
+		}
+
+	}
+
+}
+?>