118 lines
4.0 KiB
Python
118 lines
4.0 KiB
Python
import t, c
|
||
from stdint import *
|
||
import memhub
|
||
import string
|
||
import stdlib
|
||
import viperlib
|
||
import hashlib
|
||
import w32.win32file
|
||
import w32.win32base
|
||
|
||
|
||
# ============================================================
|
||
# Utils - 工程工具函数
|
||
#
|
||
# 提供 SHA1 计算和目录清理等通用工具函数。
|
||
# ============================================================
|
||
|
||
# 全局 mbuddy 指针
|
||
_mbuddy: memhub.MemManager | t.CPtr
|
||
|
||
|
||
# ============================================================
|
||
# compute_sha1 - 计算字符串的 SHA1，返回前 16 个十六进制字符
|
||
#
|
||
# 使用 includes/hashlib 库的 sha1 类计算摘要，转为十六进制字符串。
|
||
# 参考 Projectrans.py 的 compute_sha1（hashlib.sha1().hexdigest()[:16]）。
|
||
# ============================================================
|
||
def compute_sha1(pool: memhub.MemBuddy | t.CPtr, content: str) -> str:
|
||
"""计算字符串的 SHA1，返回前 16 个十六进制字符（用于文件命名）"""
|
||
if content is None or pool is None:
|
||
return None
|
||
|
||
# 构造 sha1 对象（__init__ 会初始化 state/count/buf）
|
||
# ctx 在栈上分配（alloca），函数内使用完即丢弃，无需堆分配
|
||
ctx: hashlib.sha1 | t.CPtr = hashlib.sha1()
|
||
if ctx is None:
|
||
return None
|
||
|
||
# 计算摘要
|
||
ctx.update(content)
|
||
digest: bytes = pool.alloc(hashlib.SHA1_DIGEST_LEN)
|
||
if digest is None:
|
||
return None
|
||
ctx.final(digest)
|
||
|
||
# 转为十六进制字符串（取前 8 字节 = 16 个十六进制字符）
|
||
hex_buf: str = pool.alloc(17)
|
||
if hex_buf is None:
|
||
return None
|
||
for i in range(8):
|
||
hi: int = (digest[i] >> 4) & 0xF
|
||
lo: int = digest[i] & 0xF
|
||
if hi < 10:
|
||
hex_buf[i * 2] = '0' + hi
|
||
else:
|
||
hex_buf[i * 2] = 'a' + (hi - 10)
|
||
if lo < 10:
|
||
hex_buf[i * 2 + 1] = '0' + lo
|
||
else:
|
||
hex_buf[i * 2 + 1] = 'a' + (lo - 10)
|
||
hex_buf[16] = '\0'
|
||
return hex_buf
|
||
|
||
|
||
# ============================================================
|
||
# CleanDir - 删除目录中所有文件（非递归，保留目录本身）
|
||
#
|
||
# 用于 --clean 选项：清理 temp_dir 和 output_dir 中的旧文件。
|
||
# ============================================================
|
||
def CleanDir(dir_path: str) -> int:
|
||
"""删除目录中所有文件（非递归），返回删除的文件数，-1 表示错误"""
|
||
if dir_path is None:
|
||
return -1
|
||
dir_len: t.CSizeT = string.strlen(dir_path)
|
||
pattern: bytes = stdlib.malloc(dir_len + 8)
|
||
if pattern is None:
|
||
return -1
|
||
viperlib.snprintf(pattern, dir_len + 8, "%s/*", dir_path)
|
||
|
||
find_data: w32.win32file.WIN32_FIND_DATAA | t.CPtr = stdlib.malloc(w32.win32file.WIN32_FIND_DATAA.__sizeof__())
|
||
if find_data is None:
|
||
stdlib.free(pattern)
|
||
return -1
|
||
string.memset(find_data, 0, w32.win32file.WIN32_FIND_DATAA.__sizeof__())
|
||
|
||
handle: w32.win32base.HANDLE = w32.win32file.FindFirstFileA(pattern, find_data)
|
||
if handle == w32.win32base.INVALID_HANDLE_VALUE:
|
||
stdlib.free(pattern)
|
||
stdlib.free(find_data)
|
||
return 0
|
||
|
||
deleted: int = 0
|
||
while 1:
|
||
fname: str = find_data.cFileName
|
||
if fname is not None:
|
||
# 跳过 . 和 ..
|
||
if fname[0] == '.':
|
||
if fname[1] == '\0':
|
||
fname = None
|
||
elif fname[1] == '.' and fname[2] == '\0':
|
||
fname = None
|
||
if fname is not None:
|
||
fname_len: t.CSizeT = string.strlen(fname)
|
||
full_path: bytes = stdlib.malloc(dir_len + fname_len + 2)
|
||
if full_path is not None:
|
||
viperlib.snprintf(full_path, dir_len + fname_len + 2, "%s/%s", dir_path, fname)
|
||
if w32.win32file.DeleteFileA(full_path) != 0:
|
||
deleted += 1
|
||
stdlib.free(full_path)
|
||
|
||
if w32.win32file.FindNextFileA(handle, find_data) == 0:
|
||
break
|
||
|
||
w32.win32file.FindClose(handle)
|
||
stdlib.free(pattern)
|
||
stdlib.free(find_data)
|
||
return deleted
|