From 0da972ce7efc10f7e43400b7d048139beaf6fff7 Mon Sep 17 00:00:00 2001
From: Yannik Schmidt <sheppy@atlantishq.de>
Date: Fri, 24 Apr 2026 15:50:33 +0200
Subject: [PATCH] feat: add binary cat check

---
 binary_checker.py | 43 +++++++++++++++++++++++++++++++++++++++++++
 zshrc             | 31 +++++++++++++++++++++++++++++++
 2 files changed, 74 insertions(+)
 create mode 100755 binary_checker.py

diff --git a/binary_checker.py b/binary_checker.py
new file mode 100755
index 0000000..64d6dbb
--- /dev/null
+++ b/binary_checker.py
@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+import sys
+
+def is_binary(path, chunk_size=1024):
+    try:
+        with open(path, 'rb') as f:
+            chunk = f.read(chunk_size)
+            if not chunk:
+                return False  # empty file → treat as text
+
+            # If there are null bytes, it's very likely binary
+            if b'\x00' in chunk:
+                return True
+
+            # Define what we consider "text" bytes
+            text_bytes = bytearray(range(32, 127)) + b'\n\r\t\f\b'
+
+            # Count non-text bytes
+            nontext = sum(byte not in text_bytes for byte in chunk)
+
+            # If more than 30% are non-text, treat as binary
+            return (nontext / len(chunk)) > 0.3
+
+    except Exception:
+        # On error (e.g., file not readable), treat as binary
+        return True
+
+
+def main():
+    if len(sys.argv) != 2:
+        print(f"Usage: {sys.argv[0]} <file>", file=sys.stderr)
+        sys.exit(1)
+
+    path = sys.argv[1]
+
+    if is_binary(path):
+        sys.exit(1)
+    else:
+        sys.exit(0)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/zshrc b/zshrc
index 7630594..3e9eaf2 100644
--- a/zshrc
+++ b/zshrc
@@ -230,3 +230,34 @@ alias connect_synology="ssh -f -o ExitOnForwardFailure=yes -i ~/.ssh/sheppy-mast
 ths_ssh="ssh -f -o ExitOnForwardFailure=yes -i .ssh/sheppy-master -L 8000:host.docker.internal:22 root@172.16.1.4 sleep 3600 && ssh cheffe@localhost -p 8000"
 #trap ctrl_c INT; function ctrl_c() {};
 alias sss='ssh root@192.168.1.48 -t "systemctl suspend; exit"'
+
+cat() {
+
+  # no args
+  if [[ $# -eq 0 ]]; then
+    command cat
+    return
+  fi
+
+  for file in "$@"; do
+
+    # Skip non-regular files (pipes, etc.)
+    if [[ ! -f "$file" ]]; then
+      command cat "$file"
+      continue
+    fi
+
+    ~/.config/binary_checker.py "$file"
+    if [[ $? -ne 0 ]] then
+      echo -n "'$file' looks a bit binary, you sure you wanna cat that? [y/N] "
+      read reply
+
+      if [[ ! "$reply" =~ ^[Yy]$ ]]; then
+        echo "Skipping '$file'"
+        continue
+      fi
+    fi
+
+    command cat "$file"
+  done
+}