[etgtools] Disable text wrapping for specific lines in docstrings

The line-wrapping causes issues once the python signatures become too long,
as textwrap isn't smart enough to split the lines on valid continuation points
for code. I had one instance of splitting a line in the middle of a string ->
SyntaxError on next run of etg due to the generated PYI file having an
unterminated string.

Specificially, disable splitting for lines that start (ignoring spaces) with
a specific string - in this case any line starting with the name of the
function or method this is a docstring for.

etgtools/generators.py

@@ -81,12 +81,15 @@ def nci(text, numSpaces=0, stripLeading=True):
     return newText
 
 
-def wrapText(text):
+def wrapText(text, dontWrap: str = ''):
     import textwrap
     lines = []
     tw = textwrap.TextWrapper(width=70, break_long_words=False)
     for line in text.split('\n'):
-        lines.append(tw.fill(line))
+        if dontWrap and line.lstrip().startswith(dontWrap):
+            lines.append(line)
+        else:
+            lines.append(tw.fill(line))
     return '\n'.join(lines)
 
 

etgtools/sip_generator.py

@@ -610,7 +610,7 @@ from .%s import *
 
         # get the docstring text
         text = nci(extractors.flattenNode(item.briefDoc, False))
-        text = wrapText(text)
+        text = wrapText(text, item.pyName or item.name)
 
 
         #if isinstance(item, extractors.ClassDef):