docs: use MarkDown for option docs

scripts/generate-options.py

@@ -0,0 +1,81 @@
+import json
+import sys
+
+header = """
+# Mailserver options
+
+## `mailserver`
+
+"""
+
+template = """
+`````{{option}} {key}
+{description}
+
+{type}
+{default}
+{example}
+`````
+"""
+
+f = open(sys.argv[1])
+options = json.load(f)
+
+groups = ["mailserver.loginAccounts",
+          "mailserver.certificate",
+          "mailserver.dkim",
+          "mailserver.dmarcReporting",
+          "mailserver.fullTextSearch",
+          "mailserver.redis",
+          "mailserver.monitoring",
+          "mailserver.backup",
+          "mailserver.borgbackup"]
+
+def render_option_value(opt, attr):
+  if attr in opt:
+      if isinstance(opt[attr], dict) and '_type' in opt[attr]:
+          if opt[attr]['_type'] == 'literalExpression':
+              if '\n' in opt[attr]['text']:
+                  res = '\n```nix\n' + opt[attr]['text'].rstrip('\n') + '\n```'
+              else:
+                  res = '```{}```'.format(opt[attr]['text'])
+          elif opt[attr]['_type'] == 'literalMD':
+              res = opt[attr]['text']
+      else:
+          s = str(opt[attr])
+          if s == "":
+              res = '`""`'
+          elif '\n' in s:
+              res = '\n```\n' + s.rstrip('\n') + '\n```'
+          else:
+              res = '```{}```'.format(s)
+      res = '- ' + attr + ': ' + res
+  else:
+      res = ""
+  return res
+
+def print_option(opt):
+    if isinstance(opt['description'], dict) and '_type' in opt['description']: # mdDoc
+        description = opt['description']['text']
+    else:
+        description = opt['description']
+    print(template.format(
+        key=opt['name'],
+        description=description or "",
+        type="- type: ```{}```".format(opt['type']),
+        default=render_option_value(opt, 'default'),
+        example=render_option_value(opt, 'example')))
+
+
+print(header)
+for opt in options:
+    if any([opt['name'].startswith(c) for c in groups]):
+        continue
+    print_option(opt)
+
+for c in groups:
+    print('## `{}`'.format(c))
+    print()
+    for opt in options:
+        if opt['name'].startswith(c):
+            print_option(opt)