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return diagnosis def check_archive_integrity(self) -> bool: """Verifies archive integrity using checksum if available""" # Implement CRC32 or other checksum verification return False # Return True if corrupted
Here's a comprehensive feature implementation to detect, diagnose, and potentially fix the "unarc.dll -1" error: 1. Error Detection Module import subprocess import os import psutil import hashlib from typing import Dict, Optional, Tuple class UnarcErrorHandler: """Handles unarc.dll -1 errors during archive extraction""" unarc.dll -1
# Check 2: Available RAM available_ram = psutil.virtual_memory().available if available_ram < 1_073_741_824: # 1 GB diagnosis["possible_causes"].append("Low system memory") diagnosis["recommendations"].append("Close other applications to free up RAM") return diagnosis def check_archive_integrity(self) ->
return False, "7-Zip extraction failed" def try_repair_archive(self) -> Tuple[bool, str]: """Attempts to repair corrupted archive""" # Implement archive repair using built-in tools return False, "Archive repair not possible" "7-Zip extraction failed" def try_repair_archive(self) ->
def has_long_paths(self) -> bool: """Checks if archive contains long file paths""" try: import zipfile with zipfile.ZipFile(self.archive_path, 'r') as zip_ref: for file_info in zip_ref.infolist(): if len(file_info.filename) > 255: return True except: pass return False def auto_recover(self) -> Tuple[bool, str]: """Attempts automatic recovery from unarc.dll -1 error""" recovery_methods = [ self.try_compatibility_mode, self.try_low_memory_mode, self.try_extract_with_7zip, self.try_repair_archive, self.try_alternative_extractor ]
for method in recovery_methods: print(f"Attempting: {method.__name__}") success, message = method() if success: return True, f"Recovered using {method.__name__}"
# Check 4: File path length if self.has_long_paths(): diagnosis["possible_causes"].append("Extremely long file paths (>260 characters)") diagnosis["recommendations"].append("Extract to a shorter path like C:\\Extract\\")