Add basic message viewer mockup

1 files changed, 27 insertions, 0 deletions

diff --git a/contrib/hldiff.py b/contrib/hldiff.py
new file mode 100755
index 00000000..e12f6887
--- /dev/null
+++ b/contrib/hldiff.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+from colorama import Fore, Style
+import sys
+import re
+
+patch = sys.stdin.read().replace("\r\n", "\n")
+stat_re = re.compile(r'(\+*)(\-*)')
+
+hit_diff = False
+for line in patch.split("\n"):
+    if line.startswith("diff "):
+        hit_diff = True
+        print(line)
+        continue
+    if hit_diff:
+        if line.startswith("-"):
+            print(f"{Fore.RED}{line}{Style.RESET_ALL}")
+        elif line.startswith("+"):
+            print(f"{Fore.GREEN}{line}{Style.RESET_ALL}")
+        else:
+            print(line)
+    else:
+        if line.startswith(" ") and "|" in line and ("+" in line or "-" in line):
+            line = stat_re.sub(
+                    f'{Fore.GREEN}\\1{Fore.RED}\\2{Style.RESET_ALL}',
+                    line)
+        print(line)