Fix major stuff/moved stuff to docker_parser.py

README.md

@@ -33,4 +33,6 @@ Notes:
 
 ## Status
 - `composer.py` and `re_compose` are finished
-- Haven't started on `basic_management.py`
+- Redoing stuff as a new class `docker_parser.py`
+  - ps() is done
+  - container_info() still a WIP

basic_management.py

@@ -3,44 +3,7 @@ from subprocess import getoutput
 # Goals: Loop: Select container (or exit), then menu to do stuff to container (start, stop, rm, list info, go back to main menu)
 
 
-def docker_info():
-    """
-    Gets info about all the Docker containers
-    :return: Nested dict of containers info
-    """
-    raw_info = getoutput('docker ps')
-    # Header: "CONTAINER ID    IMAGE    COMMAND    CREATED    STATUS    PORTS    NAMES" (with way more spaces)
-    header = raw_info[:raw_info.find('\n')+1]
-    header_indices = {'CONTAINER ID': header.find('CONTAINER ID'), 'IMAGE': header.find('IMAGE'), \
-        'COMMAND': header.find('COMMAND'), 'CREATED': header.find('CREATED'), 'STATUS': header.find('STATUS'), \
-        'PORTS': header.find('PORTS'), 'NAMES': header.find('NAMES')}
-
-    # Remove header (example above)
-    raw_info = raw_info[raw_info.find('\n')+1:]
-    info = {}
-
-    # Find container names
-    containers = []
-    for line in raw_info.split('\n'):
-        containers.append(line.strip()[line.strip().rfind(' ')+1:])
-
-    # Fill in info
-    for i in range(len(containers)):
-        info[containers[i]] = {}
-        header_indices_keys = list(header_indices)
-        for j in range(len(header_indices_keys)):  # TODO: Fix
-            start_i = header_indices[header_indices_keys[j]]
-            if j+1 != len(header_indices):
-                end_i = header_indices[header_indices_keys[j+1]]
-            else:
-                end_i = len(header)
-            info[containers[i]][header_indices[header_indices_keys[j]]] = \
-                raw_info.split('\n')[i][start_i:end_i].strip()
-
-    return info
-
-
 if '\n' not in getoutput('docker ps'):
     print('No containers running')
     exit()
-docker_info()
+ps()

docker_parser.py

@@ -5,6 +5,44 @@ class NoContainersError(Exception):
     pass
 
 class DockerParser:
+    def ps(raw_info='docker ps'):
+        """
+        Gets info about all running Docker containers from docker ps
+        :return: Nested dict of containers info
+        """
+        if '\n' not in raw_info:
+            raise(NoContainersError('A Docker container is required to run this program. Please create a docker container and try again.'))
+        raw_info = getoutput('docker ps')
+        # Header: "CONTAINER ID    IMAGE    COMMAND    CREATED    STATUS    PORTS    NAMES" (with way more spaces)
+        header = raw_info[:raw_info.find('\n')+1]
+        header_indices = {'CONTAINER ID': header.find('CONTAINER ID'), 'IMAGE': header.find('IMAGE'),
+                        'COMMAND': header.find('COMMAND'), 'CREATED': header.find('CREATED'), 'STATUS': header.find('STATUS'),
+                        'PORTS': header.find('PORTS'), 'NAMES': header.find('NAMES')}
+
+        # Remove header (example above)
+        raw_info = raw_info[raw_info.find('\n')+1:]
+        info = {}
+
+        # Find container names
+        containers = []
+        for line in raw_info.split('\n'):
+            containers.append(line.strip()[line.strip().rfind(' ')+1:])
+
+        # Fill in info
+        for i in range(len(containers)):
+            info[containers[i]] = {}
+            header_indices_keys = list(header_indices)
+            for j in range(len(header_indices_keys)):  # TODO: Fix
+                start_i = header_indices[header_indices_keys[j]]
+                if j+1 != len(header_indices):
+                    end_i = header_indices[header_indices_keys[j+1]]
+                else:
+                    end_i = len(header)
+                info[containers[i]][header_indices[header_indices_keys[j]]] = \
+                    raw_info.split('\n')[i][start_i:end_i].strip()
+
+        return info
+    
     def containers_info(raw_info=getoutput('docker container list')):
         """
         Gets info about all the Docker containers