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tools: spiffsgen.py: add type annotations

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This commit is contained in:
Ivan Grokhotkov 2021-03-22 22:06:01 +01:00
parent 930ee51b8f
commit 9f20eeb1c0
2 changed files with 80 additions and 57 deletions
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136
components/spiffs/spiffsgen.py
View File

@ -19,13 +19,21 @@
from __future__ import division, print_function
import argparse
import ctypes
import io
import math
import os
import struct
import sys
try:
import typing
TSP = typing.TypeVar('TSP', bound='SpiffsObjPageWithIdx')
ObjIdsItem = typing.Tuple[int, typing.Type[TSP]]
except ImportError:
pass
SPIFFS_PH_FLAG_USED_FINAL_INDEX = 0xF8
SPIFFS_PH_FLAG_USED_FINAL = 0xFC
@ -42,10 +50,22 @@ SPIFFS_BLOCK_IX_LEN = 2 # spiffs_block_ix
class SpiffsBuildConfig():
def __init__(self, page_size, page_ix_len, block_size,
block_ix_len, meta_len, obj_name_len, obj_id_len,
span_ix_len, packed, aligned, endianness, use_magic, use_magic_len,
aligned_obj_ix_tables):
def __init__(self,
page_size, # type: int
page_ix_len, # type: int
block_size, # type: int
block_ix_len, # type: int
meta_len, # type: int
obj_name_len, # type: int
obj_id_len, # type: int
span_ix_len, # type: int
packed, # type: bool
aligned, # type: bool
endianness, # type: str
use_magic, # type: bool
use_magic_len, # type: bool
aligned_obj_ix_tables # type: bool
):
if block_size % page_size != 0:
raise RuntimeError('block size should be a multiple of page size')
@ -88,11 +108,11 @@ class SpiffsBuildConfig():
self.OBJ_INDEX_PAGES_HEADER_LEN_ALIGNED_PAD = 0
self.OBJ_INDEX_PAGES_OBJ_IDS_HEAD_LIM = (self.page_size - self.OBJ_INDEX_PAGES_HEADER_LEN_ALIGNED) // self.block_ix_len
self.OBJ_INDEX_PAGES_OBJ_IDS_LIM = (self.page_size - self.OBJ_DATA_PAGE_HEADER_LEN_ALIGNED) / self.block_ix_len
self.OBJ_INDEX_PAGES_OBJ_IDS_LIM = (self.page_size - self.OBJ_DATA_PAGE_HEADER_LEN_ALIGNED) // self.block_ix_len
class SpiffsFullError(RuntimeError):
def __init__(self, message=None):
def __init__(self, message=None): # type: (typing.Optional[str]) -> None
super(SpiffsFullError, self).__init__(message)
@ -109,35 +129,39 @@ class SpiffsPage():
8: 'Q'
}
_type_dict = {
1: ctypes.c_ubyte,
2: ctypes.c_ushort,
4: ctypes.c_uint,
8: ctypes.c_ulonglong
}
def __init__(self, bix, build_config):
def __init__(self, bix, build_config): # type: (int, SpiffsBuildConfig) -> None
self.build_config = build_config
self.bix = bix
def to_binary(self): # type: () -> bytes
# Consider rewriting this using ABC
raise NotImplementedError()
class SpiffsObjPageWithIdx(SpiffsPage):
def __init__(self, obj_id, build_config): # type: (int, SpiffsBuildConfig) -> None
super(SpiffsObjPageWithIdx, self).__init__(0, build_config)
self.obj_id = obj_id
class SpiffsObjLuPage(SpiffsPage):
def __init__(self, bix, build_config):
def __init__(self, bix, build_config): # type: (int, SpiffsBuildConfig) -> None
SpiffsPage.__init__(self, bix, build_config)
self.obj_ids_limit = self.build_config.OBJ_LU_PAGES_OBJ_IDS_LIM
self.obj_ids = list()
self.obj_ids = list() # type: typing.List[ObjIdsItem]
def _calc_magic(self, blocks_lim):
def _calc_magic(self, blocks_lim): # type: (int) -> int
# Calculate the magic value mirrorring computation done by the macro SPIFFS_MAGIC defined in
# spiffs_nucleus.h
magic = 0x20140529 ^ self.build_config.page_size
if self.build_config.use_magic_len:
magic = magic ^ (blocks_lim - self.bix)
magic = SpiffsPage._type_dict[self.build_config.obj_id_len](magic)
return magic.value
# narrow the result to build_config.obj_id_len bytes
mask = (2 << (8 * self.build_config.obj_id_len)) - 1
return magic & mask
def register_page(self, page):
def register_page(self, page): # type: (TSP) -> None
if not self.obj_ids_limit > 0:
raise SpiffsFullError()
@ -145,8 +169,7 @@ class SpiffsObjLuPage(SpiffsPage):
self.obj_ids.append(obj_id)
self.obj_ids_limit -= 1
def to_binary(self):
global test
def to_binary(self): # type: () -> bytes
img = b''
for (obj_id, page_type) in self.obj_ids:
@ -161,7 +184,7 @@ class SpiffsObjLuPage(SpiffsPage):
return img
def magicfy(self, blocks_lim):
def magicfy(self, blocks_lim): # type: (int) -> None
# Only use magic value if no valid obj id has been written to the spot, which is the
# spot taken up by the last obj id on last lookup page. The parent is responsible
# for determining which is the last lookup page and calling this function.
@ -172,7 +195,7 @@ class SpiffsObjLuPage(SpiffsPage):
4: 0xFFFFFFFF,
8: 0xFFFFFFFFFFFFFFFF
}
if (remaining >= 2):
if remaining >= 2:
for i in range(remaining):
if i == remaining - 2:
self.obj_ids.append((self._calc_magic(blocks_lim), SpiffsObjDataPage))
@ -182,10 +205,10 @@ class SpiffsObjLuPage(SpiffsPage):
self.obj_ids_limit -= 1
class SpiffsObjIndexPage(SpiffsPage):
def __init__(self, obj_id, span_ix, size, name, build_config):
SpiffsPage.__init__(self, 0, build_config)
self.obj_id = obj_id
class SpiffsObjIndexPage(SpiffsObjPageWithIdx):
def __init__(self, obj_id, span_ix, size, name, build_config
): # type: (int, int, int, str, SpiffsBuildConfig) -> None
super(SpiffsObjIndexPage, self).__init__(obj_id, build_config)
self.span_ix = span_ix
self.name = name
self.size = size
@ -195,16 +218,16 @@ class SpiffsObjIndexPage(SpiffsPage):
else:
self.pages_lim = self.build_config.OBJ_INDEX_PAGES_OBJ_IDS_LIM
self.pages = list()
self.pages = list() # type: typing.List[int]
def register_page(self, page):
def register_page(self, page): # type: (SpiffsObjDataPage) -> None
if not self.pages_lim > 0:
raise SpiffsFullError
self.pages.append(page.offset)
self.pages_lim -= 1
def to_binary(self):
def to_binary(self): # type: () -> bytes
obj_id = self.obj_id ^ (1 << ((self.build_config.obj_id_len * 8) - 1))
img = struct.pack(SpiffsPage._endianness_dict[self.build_config.endianness] +
SpiffsPage._len_dict[self.build_config.obj_id_len] +
@ -244,15 +267,15 @@ class SpiffsObjIndexPage(SpiffsPage):
return img
class SpiffsObjDataPage(SpiffsPage):
def __init__(self, offset, obj_id, span_ix, contents, build_config):
SpiffsPage.__init__(self, 0, build_config)
self.obj_id = obj_id
class SpiffsObjDataPage(SpiffsObjPageWithIdx):
def __init__(self, offset, obj_id, span_ix, contents, build_config
): # type: (int, int, int, bytes, SpiffsBuildConfig) -> None
super(SpiffsObjDataPage, self).__init__(obj_id, build_config)
self.span_ix = span_ix
self.contents = contents
self.offset = offset
def to_binary(self):
def to_binary(self): # type: () -> bytes
img = struct.pack(SpiffsPage._endianness_dict[self.build_config.endianness] +
SpiffsPage._len_dict[self.build_config.obj_id_len] +
SpiffsPage._len_dict[self.build_config.span_ix_len] +
@ -271,17 +294,17 @@ class SpiffsObjDataPage(SpiffsPage):
class SpiffsBlock():
def _reset(self):
def _reset(self): # type: () -> None
self.cur_obj_index_span_ix = 0
self.cur_obj_data_span_ix = 0
self.cur_obj_id = 0
self.cur_obj_idx_page = None
self.cur_obj_idx_page = None # type: typing.Optional[SpiffsObjIndexPage]
def __init__(self, bix, blocks_lim, build_config):
def __init__(self, bix, blocks_lim, build_config): # type: (int, int, SpiffsBuildConfig) -> None
self.build_config = build_config
self.offset = bix * self.build_config.block_size
self.remaining_pages = self.build_config.OBJ_USABLE_PAGES_PER_BLOCK
self.pages = list()
self.pages = list() # type: typing.List[SpiffsPage]
self.bix = bix
lu_pages = list()
@ -296,8 +319,9 @@ class SpiffsBlock():
self._reset()
def _register_page(self, page):
def _register_page(self, page): # type: (TSP) -> None
if isinstance(page, SpiffsObjDataPage):
assert self.cur_obj_idx_page is not None
self.cur_obj_idx_page.register_page(page) # can raise SpiffsFullError
try:
@ -313,7 +337,8 @@ class SpiffsBlock():
self.pages.append(page)
def begin_obj(self, obj_id, size, name, obj_index_span_ix=0, obj_data_span_ix=0):
def begin_obj(self, obj_id, size, name, obj_index_span_ix=0, obj_data_span_ix=0
): # type: (int, int, str, int, int) -> None
if not self.remaining_pages > 0:
raise SpiffsFullError()
self._reset()
@ -330,7 +355,7 @@ class SpiffsBlock():
self.remaining_pages -= 1
self.cur_obj_index_span_ix += 1
def update_obj(self, contents):
def update_obj(self, contents): # type: (bytes) -> None
if not self.remaining_pages > 0:
raise SpiffsFullError()
page = SpiffsObjDataPage(self.offset + (len(self.pages) * self.build_config.page_size),
@ -341,18 +366,19 @@ class SpiffsBlock():
self.cur_obj_data_span_ix += 1
self.remaining_pages -= 1
def end_obj(self):
def end_obj(self): # type: () -> None
self._reset()
def is_full(self):
def is_full(self): # type: () -> bool
return self.remaining_pages <= 0
def to_binary(self, blocks_lim):
def to_binary(self, blocks_lim): # type: (int) -> bytes
img = b''
if self.build_config.use_magic:
for (idx, page) in enumerate(self.pages):
if idx == self.build_config.OBJ_LU_PAGES_PER_BLOCK - 1:
assert isinstance(page, SpiffsObjLuPage)
page.magicfy(blocks_lim)
img += page.to_binary()
else:
@ -366,19 +392,19 @@ class SpiffsBlock():
class SpiffsFS():
def __init__(self, img_size, build_config):
def __init__(self, img_size, build_config): # type: (int, SpiffsBuildConfig) -> None
if img_size % build_config.block_size != 0:
raise RuntimeError('image size should be a multiple of block size')
self.img_size = img_size
self.build_config = build_config
self.blocks = list()
self.blocks = list() # type: typing.List[SpiffsBlock]
self.blocks_lim = self.img_size // self.build_config.block_size
self.remaining_blocks = self.blocks_lim
self.cur_obj_id = 1 # starting object id
def _create_block(self):
def _create_block(self): # type: () -> SpiffsBlock
if self.is_full():
raise SpiffsFullError('the image size has been exceeded')
@ -387,12 +413,10 @@ class SpiffsFS():
self.remaining_blocks -= 1
return block
def is_full(self):
def is_full(self): # type: () -> bool
return self.remaining_blocks <= 0
def create_file(self, img_path, file_path):
contents = None
def create_file(self, img_path, file_path): # type: (str, str) -> None
if len(img_path) > self.build_config.obj_name_len:
raise RuntimeError("object name '%s' too long" % img_path)
@ -446,7 +470,7 @@ class SpiffsFS():
self.cur_obj_id += 1
def to_binary(self):
def to_binary(self): # type: () -> bytes
img = b''
all_blocks = []
for block in self.blocks:
@ -466,7 +490,7 @@ class SpiffsFS():
return img
def main():
def main(): # type: () -> None
if sys.version_info[0] < 3:
print('WARNING: Support for Python 2 is deprecated and will be removed in future versions.', file=sys.stderr)
elif sys.version_info[0] == 3 and sys.version_info[1] < 6:

1
tools/ci/mypy_ignore_list.txt
View File

@ -19,7 +19,6 @@ components/protocomm/python/constants_pb2.py
components/protocomm/python/sec0_pb2.py
components/protocomm/python/sec1_pb2.py
components/protocomm/python/session_pb2.py
components/spiffs/spiffsgen.py
components/ulp/esp32ulp_mapgen.py
components/wifi_provisioning/python/wifi_config_pb2.py
components/wifi_provisioning/python/wifi_constants_pb2.py