166 lines
4.6 KiB
Python
166 lines
4.6 KiB
Python
import base64
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import urwid
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from html.parser import HTMLParser
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import math
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import os
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import re
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import shutil
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import subprocess
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from datetime import datetime, timezone
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HASHTAG_PATTERN = re.compile(r'(?<!\w)(#\w+)\b')
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SECOND = 1
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MINUTE = SECOND * 60
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HOUR = MINUTE * 60
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DAY = HOUR * 24
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WEEK = DAY * 7
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def parse_datetime(value):
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"""Returns an aware datetime in local timezone"""
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# In Python < 3.7, `%z` does not match `Z` offset
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# https://docs.python.org/3.7/library/datetime.html#strftime-and-strptime-behavior
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if value.endswith("Z"):
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dttm = datetime.strptime(value, "%Y-%m-%dT%H:%M:%S.%fZ").replace(tzinfo=timezone.utc)
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else:
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dttm = datetime.strptime(value, "%Y-%m-%dT%H:%M:%S.%f%z")
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# When running tests return datetime in UTC so that tests don't depend on
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# the local timezone
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if "PYTEST_CURRENT_TEST" in os.environ:
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return dttm.astimezone(timezone.utc)
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return dttm.astimezone()
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def time_ago(value: datetime) -> str:
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now = datetime.now().astimezone()
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delta = now.timestamp() - value.timestamp()
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if delta < 1:
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return "now"
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if delta < 8 * DAY:
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if delta < MINUTE:
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return f"{math.floor(delta / SECOND)}".rjust(2, " ") + "s"
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if delta < HOUR:
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return f"{math.floor(delta / MINUTE)}".rjust(2, " ") + "m"
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if delta < DAY:
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return f"{math.floor(delta / HOUR)}".rjust(2, " ") + "h"
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return f"{math.floor(delta / DAY)}".rjust(2, " ") + "d"
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if delta < 53 * WEEK: # not exactly correct but good enough as a boundary
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return f"{math.floor(delta / WEEK)}".rjust(2, " ") + "w"
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return ">1y"
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def highlight_keys(text, high_attr, low_attr=""):
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"""
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Takes a string and adds high_attr attribute to parts in square brackets,
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and optionally low_attr attribute to parts outside square brackets.
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The result can be rendered using a urwid.Text widget.
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For example:
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>>> highlight_keys("[P]rint [V]iew", "blue")
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>>> [('blue', 'P'), 'rint ', ('blue', 'V'), 'iew']
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"""
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def _gen():
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highlighted = False
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for part in re.split("\\[|\\]", text):
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if part:
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if highlighted:
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yield (high_attr, part) if high_attr else part
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else:
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yield (low_attr, part) if low_attr else part
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highlighted = not highlighted
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return list(_gen())
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def highlight_hashtags(line, followed_tags, attr="hashtag", followed_attr="followed_hashtag"):
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hline = []
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for p in re.split(HASHTAG_PATTERN, line):
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if p.startswith("#"):
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if p[1:].lower() in (t.lower() for t in followed_tags):
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hline.append((followed_attr, p))
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else:
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hline.append((attr, p))
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else:
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hline.append(p)
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return hline
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def show_media(paths):
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"""
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Attempt to open an image viewer to show given media files.
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FIXME: This is not very thought out, but works for me.
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Once settings are implemented, add an option for the user to configure their
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prefered media viewer.
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"""
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viewer = None
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potential_viewers = [
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"feh",
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"eog",
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"display"
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]
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for v in potential_viewers:
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viewer = shutil.which(v)
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if viewer:
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break
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if not viewer:
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raise Exception("Cannot find an image viewer")
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subprocess.run([viewer] + paths)
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class LinkParser(HTMLParser):
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def reset(self):
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super().reset()
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self.links = []
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def handle_starttag(self, tag, attrs):
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if tag == "a":
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href, title = None, None
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for name, value in attrs:
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if name == "href":
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href = value
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if name == "title":
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title = value
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if href:
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self.links.append((href, title))
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def parse_content_links(content):
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"""Parse <a> tags from status's `content` and return them as a list of
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(href, title), where `title` may be None.
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"""
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parser = LinkParser()
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parser.feed(content)
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return parser.links[:]
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def copy_to_clipboard(screen: urwid.raw_display.Screen, text: str):
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""" copy text to clipboard using OSC 52
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This escape sequence is documented
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here https://iterm2.com/documentation-escape-codes.html
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It has wide support - XTerm, Windows Terminal,
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Kitty, iTerm2, others. Some terminals may require a setting to be
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enabled in order to use OSC 52 clipboard functions.
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"""
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text_bytes = text.encode("utf-8")
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b64_bytes = base64.b64encode(text_bytes)
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b64_text = b64_bytes.decode("utf-8")
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screen.write(f"\033]52;c;{b64_text}\a")
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screen.flush()
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