130 lines
4.3 KiB
Plaintext
130 lines
4.3 KiB
Plaintext
from stdint import *
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import platmacro
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import memhub
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import os.path
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import os._win32
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import os._posix
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# os package entry point
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# Dispatches to _win32 or _posix backend based on platmacro.IS_WINDOWS
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# os.path is for cross-platform pure string operations, can be used directly
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# Module-level global MBuddy pointer (initialized by the user in main)
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_mbuddy: memhub.MemBuddy*
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# =============================================================================
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# File/Directory Attribute Query
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# =============================================================================
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def exists(path: str) -> bool:
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"""Check if the file/directory exists"""
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if platmacro.IS_WINDOWS:
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return os._win32.exists(path)
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return os._posix.exists(path)
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def isdir(path: str) -> bool:
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"""Check if the path is a directory"""
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if platmacro.IS_WINDOWS:
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return os._win32.isdir(path)
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return os._posix.isdir(path)
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def isfile(path: str) -> bool:
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"""Check if the path is a regular file"""
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if platmacro.IS_WINDOWS:
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return os._win32.isfile(path)
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return os._posix.isfile(path)
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def getsize(path: str) -> int64:
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"""Returns the file size (in bytes). Returns -1 on failure."""
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if platmacro.IS_WINDOWS:
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return os._win32.getsize(path)
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return os._posix.getsize(path)
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# =============================================================================
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# Working Directory
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# =============================================================================
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def getcwd() -> str:
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"""Return the current working directory (memory allocated via _mbuddy)"""
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if platmacro.IS_WINDOWS:
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return os._win32.getcwd()
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return os._posix.getcwd_impl()
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def chdir(path: str) -> int:
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"""Switch the current working directory. Returns 0 if successful, -1 if it fails."""
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if platmacro.IS_WINDOWS:
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return os._win32.chdir(path)
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return os._posix.chdir_impl(path)
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# =============================================================================
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# File/Directory Operations
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# =============================================================================
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def mkdir(path: str) -> int:
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"""Create a directory. Returns 0 on success, -1 on failure."""
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if platmacro.IS_WINDOWS:
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return os._win32.mkdir(path)
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return os._posix.mkdir_impl(path)
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def remove(path: str) -> int:
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"""Delete the file. Returns 0 if successful, -1 if it fails."""
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if platmacro.IS_WINDOWS:
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return os._win32.remove(path)
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return os._posix.remove(path)
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def rmdir(path: str) -> int:
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"""Delete empty directories. Returns 0 if successful, -1 if it fails."""
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if platmacro.IS_WINDOWS:
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return os._win32.rmdir(path)
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return os._posix.rmdir_impl(path)
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def rename(old_path: str, new_path: str) -> int:
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"""Rename/move a file or directory. Returns 0 on success, -1 on failure."""
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if platmacro.IS_WINDOWS:
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return os._win32.rename(old_path, new_path)
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return os._posix.rename_impl(old_path, new_path)
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def chmod(path: str, mode: int) -> int:
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"""Modify file permissions. Returns 0 on success, -1 on failure.
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On Windows, only the read-only bit (S_IWUSR) is handled;
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On POSIX, full permission bits are used."""
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if platmacro.IS_WINDOWS:
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return os._win32.chmod(path, mode)
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return os._posix.chmod_impl(path, mode)
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# =============================================================================
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# Table of Contents Listing
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# =============================================================================
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def listdir(path: str, out_names: str*, max_count: ULONG) -> ULONG:
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"""List file/subdirectory names under a directory.
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out_names is a caller-provided char** array (each entry points to a filename allocated via _mbuddy); max_count is its capacity. Return the count, or 0 on failure."""
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if platmacro.IS_WINDOWS:
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return os._win32.listdir(path, out_names, max_count)
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return os._posix.listdir(path, out_names, max_count)
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# =============================================================================
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# Command Execution
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# =============================================================================
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def system(cmd: str) -> int:
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"""Execute a command line command (via the C runtime system()).
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Output goes to the terminal (inherits parent stdout/stderr). Return the exit code (0 = success)."""
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if platmacro.IS_WINDOWS:
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return os._win32.system(cmd)
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return os._posix.system_impl(cmd)
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