整理文件夹结构

scripts/test.py

@@ -0,0 +1,46 @@
+import os
+from pathlib import Path
+
+
+ROOT_DIR = Path(__file__).resolve().parents[1]
+DEFAULT_EXAMPLE = ROOT_DIR / "examples" / "samsung_apple_compatible.HEIC"
+
+# --- Hex Dump Utility ---
+def hexdump(data, length=16):
+    """Creates a formatted hex dump of a byte string."""
+    results = []
+    for i in range(0, len(data), length):
+        chunk = data[i:i + length]
+        
+        # 1. Offset
+        offset = f"{i:08x}  "
+        
+        # 2. Hex values
+        hex_part = " ".join(f"{b:02x}" for b in chunk)
+        hex_part = hex_part.ljust(length * 3 - 1) # Pad to align
+        
+        # 3. ASCII representation
+        ascii_part = "".join(chr(b) if 32 <= b <= 126 else "." for b in chunk)
+        
+        results.append(f"{offset}{hex_part}  |{ascii_part}|")
+    return "\n".join(results)
+# --- End Utility ---
+
+
+filename = os.environ.get("HEIC_SAMPLE", str(DEFAULT_EXAMPLE))
+
+if not os.path.exists(filename):
+    print(f"Error: File not found: {filename}")
+    print("Set HEIC_SAMPLE environment variable or place the sample under examples/.")
+else:
+    try:
+        with open(filename, 'rb') as f:
+            # Read the first 512 bytes (enough to see the ftyp and meta headers)
+            file_header_data = f.read(512)
+            
+        print(f"--- Hex Dump for {filename} (First 512 Bytes) ---")
+        print(hexdump(file_header_data))
+        print("="*60)
+        
+    except Exception as e:
+        print(f"An error occurred while reading the file: {e}")