feature/python (#12)

* feature/python
* adds Python as a supported language (see #9)
* add black codeformatter (requires python3.6+)
* install python3.7-minimal and pip3
* add config file for custom options

* Fix typo: Blacked -> Black

.black-format.toml

@@ -0,0 +1,3 @@
+[tool.black]
+line-length = 120
+target-version = ['py27', 'py36', 'py37', 'py38']

.docker/web/Dockerfile

@@ -8,6 +8,11 @@ RUN apt-get update -y && \
 RUN apt-get update -y && \
     apt-get install -y golang
 
+# Packages for formatting Python code
+RUN apt-get update -y && \
+    apt-get install -y python3.7-minimal python3-pip && \
+    pip3 install black
+
 COPY .docker/web/vhost.conf /etc/apache2/sites-available/000-default.conf
 
 WORKDIR /srv/app

Dockerfile

@@ -10,6 +10,11 @@ RUN apt-get update -y && \
 RUN apt-get update -y && \
     apt-get install -y golang
 
+# Packages for formatting Python code
+RUN apt-get update -y && \
+    apt-get install -y python3.7-minimal python3-pip && \
+    pip3 install black
+
 COPY vhost.conf /etc/apache2/sites-available/000-default.conf
 COPY . /srv/app
 

app/CodeFormatter/BlackPythonCodeFormatter.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace DevCommunityDE\CodeFormatter\CodeFormatter;
+
+/**
+ * Class BlackPythonCodeFormatter
+ *
+ * @package DevCommunityDE\CodeFormatter\CodeFormatter
+ */
+class BlackPythonCodeFormatter extends CodeFormatter
+{
+
+    /**
+     * @var array
+     */
+    protected static $supported_languages = [
+        'python',
+    ];
+
+    /**
+     * @param string $file
+     * @return string
+     */
+    protected function getShellCommand(string $file) : string
+    {
+        return 'black --quiet --config ' . __DIR__ . '/../../.black-format.toml \'' . $file . '\'';
+    }
+}

app/CodeFormatter/CodeFormatter.php

@@ -16,6 +16,7 @@ abstract class CodeFormatter
      * @var array
      */
     protected static $code_formatters = [
+        BlackPythonCodeFormatter::class,
         ClangCodeFormatter::class,
         GoCodeFormatter::class,
     ];