Mercurial > libervia-backend
view sat/tools/common/utils.py @ 3983:31c3d6652115
component AP gateway: ignore actor delection notifications:
When a `Delete` activity was received and the object was the emitting actor itself, the
signature checking was failing if the actor was unknown (due to the impossibility to
retrieve the actor public key, as it is no more accessible).
To avoid that, those notifications are ignored for now. In the future they should clean
the cache linked to this actor.
author | Goffi <goffi@goffi.org> |
---|---|
date | Tue, 15 Nov 2022 18:15:16 +0100 |
parents | 584379473925 |
children | 524856bd7b19 |
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#!/usr/bin/env python3 # Libervia: an XMPP client # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org) # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Affero General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Affero General Public License for more details. # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. """Misc utils for both backend and frontends""" import collections.abc size_units = { "b": 1, "kb": 1000, "mb": 1000**2, "gb": 1000**3, "tb": 1000**4, "pb": 1000**5, "eb": 1000**6, "zb": 1000**7, "yb": 1000**8, "o": 1, "ko": 1000, "mo": 1000**2, "go": 1000**3, "to": 1000**4, "po": 1000**5, "eo": 1000**6, "zo": 1000**7, "yo": 1000**8, "kib": 1024, "mib": 1024**2, "gib": 1024**3, "tib": 1024**4, "pib": 1024**5, "eib": 1024**6, "zib": 1024**7, "yib": 1024**8, "kio": 1024, "mio": 1024**2, "gio": 1024**3, "tio": 1024**4, "pio": 1024**5, "eio": 1024**6, "zio": 1024**7, "yio": 1024**8, } def per_luminance(red, green, blue): """Caculate the perceived luminance of a RGB color @param red(int): 0-1 normalized value of red @param green(int): 0-1 normalized value of green @param blue(int): 0-1 normalized value of blue @return (float): 0-1 value of luminance (<0.5 is dark, else it's light) """ # cf. https://stackoverflow.com/a/1855903, thanks Gacek return 0.299 * red + 0.587 * green + 0.114 * blue def recursive_update(ori: dict, update: dict): """Recursively update a dictionary""" # cf. https://stackoverflow.com/a/3233356, thanks Alex Martelli for k, v in update.items(): if isinstance(v, collections.abc.Mapping): ori[k] = recursive_update(ori.get(k, {}), v) else: ori[k] = v return ori class OrderedSet(collections.abc.MutableSet): """A mutable sequence which doesn't keep duplicates""" # TODO: complete missing set methods def __init__(self, values=None): self._dict = {} if values is not None: self.update(values) def __len__(self): return len(self._dict) def __iter__(self): return iter(self._dict.keys()) def __contains__(self, item): return item in self._dict def add(self, item): self._dict[item] = None def discard(self, item): try: del self._dict[item] except KeyError: pass def update(self, items): self._dict.update({i: None for i in items}) def parseSize(size): """Parse a file size with optional multiple symbole""" try: return int(size) except ValueError: number = [] symbol = [] try: for c in size: if c == " ": continue if c.isdigit(): number.append(c) elif c.isalpha(): symbol.append(c) else: raise ValueError("unexpected char in size: {c!r} (size: {size!r})") number = int("".join(number)) symbol = "".join(symbol) if symbol: try: multiplier = size_units[symbol.lower()] except KeyError: raise ValueError( "unknown size multiplier symbole: {symbol!r} (size: {size!r})") else: return number * multiplier return number except Exception as e: raise ValueError(f"invalid size: {e}") def getSizeMultiplier(size, suffix="o"): """Get multiplier of a file size""" size = int(size) # cf. https://stackoverflow.com/a/1094933 (thanks) for unit in ["", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi"]: if abs(size) < 1024.0: return size, f"{unit}{suffix}" size /= 1024.0 return size, f"Yi{suffix}" def getHumanSize(size, suffix="o", sep=" "): size, symbol = getSizeMultiplier(size, suffix) return f"{size:.2f}{sep}{symbol}"