Add suppoert for parsing json

Author: plotbox-io

README.md

@@ -25,7 +25,7 @@ $json = $converter->convert($csvIssuesString, 'csv', 'json');
 |------|------------|------------|
 | csv  | YES        | NO         |
 | xml  | NO         | YES        |
-| json | NO         | YES        |
+| json | YES        | YES        |
 
 ## Contributing
 

composer.json

@@ -12,7 +12,8 @@
   ],
   "minimum-stability": "stable",
   "require": {
-    "php": ">=5.6"
+    "php": ">=5.6",
+    "ext-json": "*"
   },
   "autoload": {
     "psr-4": {

src/CodeIssue.php

@@ -59,6 +59,14 @@ public function getFile()
         return $this->file;
     }
 
+    /**
+     * @param $filePath
+     */
+    public function changeFilePath($filePath)
+    {
+        $this->file = $filePath;
+    }
+
     /**
      * @return int
      */

src/Phpcs/ReportType/JsonReport.php

@@ -2,6 +2,8 @@
 
 namespace PlotBox\PhpcsParse\Phpcs\ReportType;
 
+use PlotBox\PhpcsParse\CodeIssue;
+
 class JsonReport implements Report
 {
     /** @var ReportAggregator */
@@ -58,6 +60,24 @@ public function toString(array $issues)
      */
     public function fromString($content)
     {
-        throw new NotSupportedException();
+        $jsonData = json_decode($content);
+
+        $parsedResults = [];
+        foreach($jsonData->files as $fileName => $details){
+            foreach($details->messages as $issue){
+                $parsedResults[] = new CodeIssue(
+                    $fileName,
+                    $issue->line,
+                    $issue->column,
+                    $issue->source,
+                    $issue->message,
+                    $issue->type,
+                    $issue->severity,
+                    $issue->fixable
+                );
+            }
+        }
+        
+        return $parsedResults;
     }
-}
+}