From 7914432a68b3b2d2dd334782caac265042d8d11c Mon Sep 17 00:00:00 2001
From: Joe Rickerby <joerick@mac.com>
Date: Fri, 13 Nov 2020 15:25:52 +0000
Subject: [PATCH] fix appearance on Travis with headers and identifiers

---
 cibuildwheel/logger.py | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/cibuildwheel/logger.py b/cibuildwheel/logger.py
index fcd77751..7ccc71ff 100644
--- a/cibuildwheel/logger.py
+++ b/cibuildwheel/logger.py
@@ -1,12 +1,13 @@
 import os
 import time
 import sys
+import re
 from typing import Optional, Union
 
 DEFAULT_FOLD_PATTERN = ('{name}', '')
 FOLD_PATTERNS = {
     'azure': ('##[group]{name}', '##[endgroup]'),
-    'travis': ('travis_fold:start:{name}', 'travis_fold:end:{name}'),
+    'travis': ('travis_fold:start:{identifier}\n{name}', 'travis_fold:end:{identifier}'),
     'github': ('::group::{name}', '::endgroup::{name}'),
 }
 
@@ -107,16 +108,32 @@ class Logger:
         self._end_fold_group()
         self.active_fold_group_name = name
         fold_start_pattern = FOLD_PATTERNS.get(self.fold_mode, DEFAULT_FOLD_PATTERN)[0]
+        identifier = self._fold_group_identifier(name)
 
-        print(fold_start_pattern.format(name=self.active_fold_group_name))
+        print(fold_start_pattern.format(name=self.active_fold_group_name, identifier=identifier))
 
     def _end_fold_group(self):
         if self.active_fold_group_name:
             fold_start_pattern = FOLD_PATTERNS.get(self.fold_mode, DEFAULT_FOLD_PATTERN)[1]
-            print(fold_start_pattern.format(name=self.active_fold_group_name))
+            identifier = self._fold_group_identifier(self.active_fold_group_name)
+            print(fold_start_pattern.format(name=self.active_fold_group_name, identifier=identifier))
             sys.stdout.flush()
             self.active_fold_group_name = None
 
+    def _fold_group_identifier(self, name: str):
+        '''
+        Travis doesn't like fold groups identifiers that have spaces in. This
+        method converts them to ascii identifiers
+        '''
+        # whitespace to dashes
+        identifier = re.sub(r'\s+', '-', name)
+        # remove non-alphanum
+        identifier = re.sub(r'[^A-Za-z\d]+', r'', identifier)
+        # trim dashes
+        identifier = identifier.strip('-')
+        # lowercase
+        return identifier.lower()
+
     @property
     def colors(self):
         if self.colors_enabled: