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94 lines
2.5 KiB
Python
94 lines
2.5 KiB
Python
# 16.05.24
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import os
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import errno
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import platform
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import unicodedata
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# List of invalid characters for Windows filenames
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WINDOWS_INVALID_CHARS = '<>:"/\\|?*'
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WINDOWS_RESERVED_NAMES = [
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"CON", "PRN", "AUX", "NUL",
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"COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9",
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"LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9"
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]
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# Invalid characters for macOS filenames
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MACOS_INVALID_CHARS = '/:'
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# Invalid characters for Linux/Android filenames
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LINUX_INVALID_CHARS = '/\0'
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# Maximum path length for Windows
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WINDOWS_MAX_PATH = 260
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def is_valid_filename(filename, system):
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"""
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Validates if the given filename is valid for the specified system.
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Args:
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- filename (str): The filename to validate.
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- system (str): The operating system, e.g., 'Windows', 'Darwin' (macOS), or others for Linux/Android.
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Returns:
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bool: True if the filename is valid, False otherwise.
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"""
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# Normalize Unicode
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filename = unicodedata.normalize('NFC', filename)
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# Common checks across all systems
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if filename.endswith(' ') or filename.endswith('.') or filename.endswith('/'):
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return False
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if filename.startswith('.') and system == "Darwin":
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return False
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# System-specific checks
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if system == "Windows":
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if len(filename) > WINDOWS_MAX_PATH:
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return False
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if any(char in filename for char in WINDOWS_INVALID_CHARS):
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return False
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name, ext = os.path.splitext(filename)
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if name.upper() in WINDOWS_RESERVED_NAMES:
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return False
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elif system == "Darwin": # macOS
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if any(char in filename for char in MACOS_INVALID_CHARS):
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return False
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else: # Linux and Android
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if any(char in filename for char in LINUX_INVALID_CHARS):
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return False
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return True
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def can_create_file(file_path):
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"""
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Checks if a file can be created at the given file path.
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Args:
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- file_path (str): The path where the file is to be created.
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Returns:
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bool: True if the file can be created, False otherwise.
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"""
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current_system = platform.system()
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if not is_valid_filename(os.path.basename(file_path), current_system):
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return False
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try:
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with open(file_path, 'w') as file:
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pass
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os.remove(file_path) # Cleanup if the file was created
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return True
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except OSError as e:
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if e.errno in (errno.EACCES, errno.ENOENT, errno.EEXIST, errno.ENOTDIR):
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return False
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raise
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