Add machine readable --list output

jrnl/args.py

@@ -85,7 +85,13 @@ def parse_args(args=[]):
         action="store_const",
         const=postconfig_list,
         dest="postconfig_cmd",
-        help="List all configured journals",
+        help="""
+        List all configured journals.
+
+        Optional parameters:
+
+        --format [json or yaml]
+        """,
     )
     standalone.add_argument(
         "--ls",

jrnl/commands.py

@@ -56,10 +56,10 @@ def preconfig_version(_):
     print(output)
 
 
-def postconfig_list(config, **kwargs):
+def postconfig_list(args, config, **kwargs):
     from jrnl.output import list_journals
 
-    print(list_journals(config))
+    print(list_journals(config, args.export))
 
 
 def postconfig_import(args, config, **kwargs):

jrnl/output.py

@@ -25,10 +25,23 @@ def deprecated_cmd(old_cmd, new_cmd, callback=None, **kwargs):
         callback(**kwargs)
 
 
-def list_journals(configuration):
+def list_journals(configuration, format=None):
     from jrnl import config
 
     """List the journals specified in the configuration file"""
+    if format == "json":
+        import json
+
+        return json.dumps(configuration["journals"])
+    elif format == "yaml":
+        from io import StringIO
+
+        from ruamel.yaml import YAML
+
+        output = StringIO()
+        YAML().dump(configuration["journals"], output)
+        return output.getvalue()
+    else:
         result = f"Journals defined in config ({config.get_config_path()})\n"
         ml = min(max(len(k) for k in configuration["journals"]), 20)
         for journal, cfg in configuration["journals"].items():