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