Make formated output valid nagios config

src/nag_object.py

@@ -1,6 +1,34 @@
+import shlex
 from enum import Enum
 
 
+def wrap(input: str, ws_base, max_length=70) -> str:
+    output: str = str()
+    if len(input) < max_length:
+        return input
+
+    temp = shlex.split(input, posix=False)
+    length = len(temp[0])
+    whitespace = str()
+    for _ in range(0, ws_base):
+        whitespace += " "
+    separator = " \\\n    " + whitespace
+    for i in range(0, len(temp)):
+        if i < len(temp) - 1:
+            if length + len(temp[i]) < max_length:
+                output += " " + temp[i]
+                length += len(temp[i + 1])
+            else:
+                output += separator + temp[i]
+                length = len(temp[i]) + len(" \\\n\t\t")
+        else:
+            if length < max_length - len(temp[i]):
+                output += " " + temp[i]
+            else:
+                output += separator + temp[i]
+    return output
+
+
 class NagObjectType(Enum):
     Command = "command"
     ContactGroup = "contactgroup"
@@ -18,6 +46,7 @@ class NagObjectType(Enum):
 
 
 class NagObject:
+
     def __init__(self,
                  config_file: str = str(),
                  directives: list[list[str]] = list(),
@@ -29,11 +58,18 @@ class NagObject:
         self.m_type: NagObjectType = type
 
     def __str__(self):
-        string = "{}:\n\t{}: {}\n".format(self.m_config_file, self.m_line_no,
-                                          self.m_type)
+        string = 'define {}'.format(self.m_type.value) + ' {\n'
+        ws_base = len(max([x[0] for x in self.m_directives], key=len)) + 4
         for dir in self.m_directives:
-            string += "\t\t{}: {}\n".format(dir[0], dir[1])
-        return string
+            num_whitespace = ws_base - len(dir[0])
+
+            whitespace = str()
+            for _ in range(0, num_whitespace):
+                whitespace += " "
+            string += '    {}{}{}\n'.format(
+                dir[0], whitespace,
+                wrap(dir[1], ws_base).strip().strip('\\\n').strip())
+        return string + '}\n'
 
     def get_type(self) -> NagObjectType:
         return self.m_type