Added word wrapping to email view

flask_website/utils.py

@@ -1,3 +1,4 @@
+import re
 import creoleparser
 from genshi import builder
 from functools import wraps
@@ -13,6 +14,8 @@ from flask_website.database import User
 
 pygments_formatter = HtmlFormatter(style=FlaskyStyle)
 
+_ws_split_re = re.compile(r'(\s+)')
+
 
 class CodeBlock(PreBlock):
 
@@ -46,6 +49,34 @@ def format_creole(text):
     return Markup(_parser.render(text, encoding=None))
 
 
+def split_lines_wrapping(text, width=74, threshold=82):
+    lines = text.splitlines()
+    if all(len(line) <= threshold for line in lines):
+        return lines
+    result = []
+    for line in lines:
+        if len(line) <= threshold:
+            result.append(line)
+            continue
+        line_width = 0
+        line_buffer = []
+        for piece in _ws_split_re.split(line):
+            line_width += len(piece)
+            if line_width > width:
+                result.append(u''.join(line_buffer))
+                line_buffer = []
+                if not piece.isspace():
+                    line_buffer.append(piece)
+                    line_width = len(piece)
+                else:
+                    line_width = 0
+            else:
+                line_buffer.append(piece)
+        if line_buffer:
+            result.append(u''.join(line_buffer))
+    return result
+
+
 def requires_login(f):
     @wraps(f)
     def decorated_function(*args, **kwargs):