Merge pull request #115 from clue/remove-graphviz

Split off GraphViz

Author: clue

README.md

@@ -85,11 +85,11 @@ The recommended way to install this library is [through composer](http://getcomp
 ```
 
 Optional recommendation:
+
 In order to be able to use the [graph drawing feature](#graph-drawing) you'll have to
-install GraphViz (`dot` executable). Users of Debian/Ubuntu-based distributions may simply
-invoke `sudo apt-get install graphviz`, Windows users have to
-[download GraphViZ for Windows](http://www.graphviz.org/Download_windows.php) and remaining
-users should install from [GraphViz homepage](http://www.graphviz.org/Download.php).
+install the [graphp/graphviz](https://github.com/graphp/graphviz) package and GraphViz itself (`dot` executable).
+
+See [graphp/graphviz](https://github.com/graphp/graphviz) for details.
 
 ## Tests
 

composer.json

@@ -2,7 +2,7 @@
     "name": "clue/graph",
     "type": "library",
     "description": "A mathematical graph/network library written in PHP",
-    "keywords": ["graph", "network", "mathematical", "graphviz", "vertex", "edge", "shortest path", "dijkstra", "moore-bellman-ford", "minimum spanning tree", "kruskal", "prim"],
+    "keywords": ["graph", "network", "mathematical", "vertex", "edge", "shortest path", "dijkstra", "moore-bellman-ford", "minimum spanning tree", "kruskal", "prim"],
     "homepage": "https://github.com/clue/graph",
     "license": "MIT",
     "autoload": {
@@ -13,5 +13,8 @@
     },
     "require-dev": {
         "phpunit/phpunit": "3.7.* | ~4.0"
+    },
+    "suggest": {
+        "graphp/graphviz": "GraphViz graph drawing / DOT output"
     }
 }

composer.lock

@@ -3,7 +3,7 @@
 namespace Fhaculty\Graph;
 
 use Fhaculty\Graph\Exporter\ExporterInterface;
-use Fhaculty\Graph\Exporter\Dot;
+use Fhaculty\Graph\Exporter\TrivialGraphFormat;
 use Fhaculty\Graph\Exception\BadMethodCallException;
 use Fhaculty\Graph\Exception\UnexpectedValueException;
 use Fhaculty\Graph\Exception\InvalidArgumentException;
@@ -476,14 +476,14 @@ public function setExporter(ExporterInterface $exporter)
      * get current exporter to use to export graph to its output format
      *
      * If no other exporter has been set previously, this will lazy-load
-     * the (current default) Dot exporter.
+     * the (current default) TrivialGraphFormat exporter.
      *
      * @return ExporterInterface
      */
     public function getExporter()
     {
         if ($this->exporter === null) {
-            $this->exporter = new Dot();
+            $this->exporter = new TrivialGraphFormat();
         }
         return $this->exporter;
     }