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203 lines (153 loc) · 4.48 KB
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from collections.abc import (
Iterable,
Iterator,
)
from typing import (
Any,
)
from urllib import (
parse,
)
from eth_typing import (
URI,
Hash32,
)
from eth_utils.currency import (
denoms,
from_wei,
)
from .toolz import (
sliding_window,
take,
)
def humanize_seconds(seconds: float | int) -> str:
if int(seconds) == 0:
return "0s"
unit_values = _consume_leading_zero_units(_humanize_seconds(int(seconds)))
return "".join((f"{amount}{unit}" for amount, unit in take(3, unit_values)))
SECOND = 1
MINUTE = 60
HOUR = 60 * 60
DAY = 24 * HOUR
YEAR = 365 * DAY
MONTH = YEAR // 12
WEEK = 7 * DAY
UNITS = (
(YEAR, "y"),
(MONTH, "m"),
(WEEK, "w"),
(DAY, "d"),
(HOUR, "h"),
(MINUTE, "m"),
(SECOND, "s"),
)
def _consume_leading_zero_units(
units_iter: Iterator[tuple[int, str]]
) -> Iterator[tuple[int, str]]:
for amount, unit in units_iter:
if amount == 0:
continue
else:
yield (amount, unit)
break
yield from units_iter
def _humanize_seconds(seconds: int) -> Iterator[tuple[int, str]]:
remainder = seconds
for duration, unit in UNITS:
if not remainder:
break
num = remainder // duration
yield num, unit
remainder %= duration
DISPLAY_HASH_CHARS = 4
def humanize_bytes(value: bytes) -> str:
if len(value) <= DISPLAY_HASH_CHARS + 1:
return value.hex()
value_as_hex = value.hex()
head = value_as_hex[:DISPLAY_HASH_CHARS]
tail = value_as_hex[-1 * DISPLAY_HASH_CHARS :]
return f"{head}..{tail}"
def humanize_hexstr(value: str) -> str:
tail = value[-1 * DISPLAY_HASH_CHARS :]
if value[:2] == "0x":
if len(value[2:]) <= DISPLAY_HASH_CHARS * 2:
return value
head = value[2 : DISPLAY_HASH_CHARS + 2]
return f"0x{head}..{tail}"
else:
if len(value) <= DISPLAY_HASH_CHARS * 2:
return value
head = value[:DISPLAY_HASH_CHARS]
return f"{head}..{tail}"
def humanize_hash(value: Hash32) -> str:
return humanize_bytes(value)
def humanize_ipfs_uri(uri: URI) -> str:
if not is_ipfs_uri(uri):
raise TypeError(
f"{uri} does not look like a valid IPFS uri. Currently, "
"only CIDv0 hash schemes are supported."
)
parsed = parse.urlparse(uri)
ipfs_hash = parsed.netloc
head = ipfs_hash[:DISPLAY_HASH_CHARS]
tail = ipfs_hash[-1 * DISPLAY_HASH_CHARS :]
return f"ipfs://{head}..{tail}"
def is_ipfs_uri(value: Any) -> bool:
if not isinstance(value, str):
return False
parsed = parse.urlparse(value)
if parsed.scheme != "ipfs" or not parsed.netloc:
return False
return _is_CIDv0_ipfs_hash(parsed.netloc)
def _is_CIDv0_ipfs_hash(ipfs_hash: str) -> bool:
if ipfs_hash.startswith("Qm") and len(ipfs_hash) == 46:
return True
return False
def _find_breakpoints(*values: int) -> Iterator[int]:
yield 0
for index, (left, right) in enumerate(sliding_window(2, values), 1):
if left + 1 == right:
continue
else:
yield index
yield len(values)
def _extract_integer_ranges(*values: int) -> Iterator[tuple[int, int]]:
"""
Return a tuple of consecutive ranges of integers.
:param values: a sequence of ordered integers
- fn(1, 2, 3) -> ((1, 3),)
- fn(1, 2, 3, 7, 8, 9) -> ((1, 3), (7, 9))
- fn(1, 7, 8, 9) -> ((1, 1), (7, 9))
"""
for left, right in sliding_window(2, _find_breakpoints(*values)):
chunk = values[left:right]
yield chunk[0], chunk[-1]
def _humanize_range(bounds: tuple[int, int]) -> str:
left, right = bounds
if left == right:
return str(left)
else:
return f"{left}-{right}"
def humanize_integer_sequence(values_iter: Iterable[int]) -> str:
"""
Return a concise, human-readable string representing a sequence of integers.
- fn((1, 2, 3)) -> '1-3'
- fn((1, 2, 3, 7, 8, 9)) -> '1-3|7-9'
- fn((1, 2, 3, 5, 7, 8, 9)) -> '1-3|5|7-9'
- fn((1, 7, 8, 9)) -> '1|7-9'
"""
values = tuple(values_iter)
if not values:
return "(empty)"
else:
return "|".join(map(_humanize_range, _extract_integer_ranges(*values)))
def humanize_wei(number: int) -> str:
if number >= denoms.finney:
unit = "ether"
elif number >= denoms.mwei:
unit = "gwei"
else:
unit = "wei"
amount = from_wei(number, unit)
x = f"{str(amount)} {unit}"
return x