mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-02 04:18:20 +00:00
130 lines
3.1 KiB
Python
130 lines
3.1 KiB
Python
import gc
|
|
import sys
|
|
from trezorutils import ( # noqa: F401
|
|
EMULATOR,
|
|
GITREV,
|
|
MODEL,
|
|
VERSION_MAJOR,
|
|
VERSION_MINOR,
|
|
VERSION_PATCH,
|
|
consteq,
|
|
halt,
|
|
memcpy,
|
|
set_mode_unprivileged,
|
|
)
|
|
|
|
if __debug__:
|
|
if EMULATOR:
|
|
import uos
|
|
|
|
TEST = int(uos.getenv("TREZOR_TEST") or "0")
|
|
DISABLE_FADE = int(uos.getenv("TREZOR_DISABLE_FADE") or "0")
|
|
SAVE_SCREEN = int(uos.getenv("TREZOR_SAVE_SCREEN") or "0")
|
|
LOG_MEMORY = int(uos.getenv("TREZOR_LOG_MEMORY") or "0")
|
|
else:
|
|
TEST = 0
|
|
DISABLE_FADE = 0
|
|
SAVE_SCREEN = 0
|
|
LOG_MEMORY = 0
|
|
|
|
|
|
def unimport_begin():
|
|
return set(sys.modules)
|
|
|
|
|
|
def unimport_end(mods):
|
|
for mod in sys.modules:
|
|
if mod not in mods:
|
|
# remove reference from sys.modules
|
|
del sys.modules[mod]
|
|
# remove reference from the parent module
|
|
i = mod.rfind(".")
|
|
if i < 0:
|
|
continue
|
|
path = mod[:i]
|
|
name = mod[i + 1 :]
|
|
try:
|
|
delattr(sys.modules[path], name)
|
|
except KeyError:
|
|
# either path is not present in sys.modules, or module is not
|
|
# referenced from the parent package. both is fine.
|
|
pass
|
|
# collect removed modules
|
|
gc.collect()
|
|
|
|
|
|
def ensure(cond, msg=None):
|
|
if not cond:
|
|
if msg is None:
|
|
raise AssertionError
|
|
else:
|
|
raise AssertionError(msg)
|
|
|
|
|
|
def chunks(items, size):
|
|
for i in range(0, len(items), size):
|
|
yield items[i : i + size]
|
|
|
|
|
|
def format_amount(amount, decimals):
|
|
d = pow(10, decimals)
|
|
amount = ("%d.%0*d" % (amount // d, decimals, amount % d)).rstrip("0")
|
|
if amount.endswith("."):
|
|
amount = amount[:-1]
|
|
return amount
|
|
|
|
|
|
def format_ordinal(number):
|
|
return str(number) + {1: "st", 2: "nd", 3: "rd"}.get(
|
|
4 if 10 <= number % 100 < 20 else number % 10, "th"
|
|
)
|
|
|
|
|
|
class HashWriter:
|
|
def __init__(self, ctx):
|
|
self.ctx = ctx
|
|
self.buf = bytearray(1) # used in append()
|
|
|
|
def extend(self, buf: bytearray):
|
|
self.ctx.update(buf)
|
|
|
|
def write(self, buf: bytearray): # alias for extend()
|
|
self.ctx.update(buf)
|
|
|
|
async def awrite(self, buf: bytearray): # AsyncWriter interface
|
|
return self.ctx.update(buf)
|
|
|
|
def append(self, b: int):
|
|
self.buf[0] = b
|
|
self.ctx.update(self.buf)
|
|
|
|
def get_digest(self) -> bytes:
|
|
return self.ctx.digest()
|
|
|
|
|
|
def obj_eq(l, r):
|
|
"""
|
|
Compares object contents, supports __slots__.
|
|
"""
|
|
if l.__class__ is not r.__class__:
|
|
return False
|
|
if not hasattr(l, "__slots__"):
|
|
return l.__dict__ == r.__dict__
|
|
if l.__slots__ is not r.__slots__:
|
|
return False
|
|
for slot in l.__slots__:
|
|
if getattr(l, slot, None) != getattr(r, slot, None):
|
|
return False
|
|
return True
|
|
|
|
|
|
def obj_repr(o):
|
|
"""
|
|
Returns a string representation of object, supports __slots__.
|
|
"""
|
|
if hasattr(o, "__slots__"):
|
|
d = {attr: getattr(o, attr, None) for attr in o.__slots__}
|
|
else:
|
|
d = o.__dict__
|
|
return "<%s: %s>" % (o.__class__.__name__, d)
|