432 lines
12 KiB
Python
432 lines
12 KiB
Python
#!/usr/bin/env python
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# vim:fileencoding=utf-8
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# License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
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import atexit
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import errno
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import fcntl
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import math
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import os
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import re
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import string
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import sys
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from time import monotonic
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from .constants import (
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appname, is_macos, is_wayland, supports_primary_selection
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)
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from .rgb import Color, to_color
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BASE = os.path.dirname(os.path.abspath(__file__))
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def load_shaders(name):
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from .fast_data_types import GLSL_VERSION
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vert = open(os.path.join(BASE, '{}_vertex.glsl'.format(name))).read().replace('GLSL_VERSION', str(GLSL_VERSION), 1)
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frag = open(os.path.join(BASE, '{}_fragment.glsl'.format(name))).read().replace('GLSL_VERSION', str(GLSL_VERSION), 1)
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return vert, frag
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def safe_print(*a, **k):
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try:
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print(*a, **k)
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except Exception:
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pass
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def log_error(*a, **k):
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from .fast_data_types import log_error_string
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try:
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msg = k.get('sep', ' ').join(map(str, a)) + k.get('end', '')
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log_error_string(msg.replace('\0', ''))
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except Exception:
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pass
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def ceil_int(x):
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return int(math.ceil(x))
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def sanitize_title(x):
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return re.sub(r'\s+', ' ', re.sub(r'[\0-\x19\x80-\x9f]', '', x))
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def color_as_int(val):
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return val[0] << 16 | val[1] << 8 | val[2]
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def color_from_int(val):
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return Color((val >> 16) & 0xFF, (val >> 8) & 0xFF, val & 0xFF)
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def parse_color_set(raw):
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parts = raw.split(';')
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for c, spec in [parts[i:i + 2] for i in range(0, len(parts), 2)]:
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try:
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c = int(c)
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if c < 0 or c > 255:
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continue
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if spec == '?':
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yield c, None
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else:
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r, g, b = to_color(spec)
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yield c, r << 16 | g << 8 | b
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except Exception:
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continue
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def screen_size_function(fd=None):
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ans = getattr(screen_size_function, 'ans', None)
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if ans is None:
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from collections import namedtuple
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import array
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import fcntl
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import termios
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Size = namedtuple('Size', 'rows cols width height cell_width cell_height')
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if fd is None:
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fd = sys.stdout
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def screen_size():
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if screen_size.changed:
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buf = array.array('H', [0, 0, 0, 0])
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fcntl.ioctl(fd, termios.TIOCGWINSZ, buf)
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rows, cols, width, height = tuple(buf)
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cell_width, cell_height = width // (cols or 1), height // (rows or 1)
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screen_size.ans = Size(rows, cols, width, height, cell_width, cell_height)
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screen_size.changed = False
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return screen_size.ans
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screen_size.changed = True
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screen_size.Size = Size
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ans = screen_size_function.ans = screen_size
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return ans
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def fit_image(width, height, pwidth, pheight):
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from math import floor
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if height > pheight:
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corrf = pheight / float(height)
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width, height = floor(corrf * width), pheight
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if width > pwidth:
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corrf = pwidth / float(width)
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width, height = pwidth, floor(corrf * height)
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if height > pheight:
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corrf = pheight / float(height)
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width, height = floor(corrf * width), pheight
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return int(width), int(height)
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def set_primary_selection(text):
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if not supports_primary_selection:
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return # There is no primary selection
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if isinstance(text, bytes):
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text = text.decode('utf-8')
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from kitty.fast_data_types import set_primary_selection
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set_primary_selection(text)
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def get_primary_selection():
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if not supports_primary_selection:
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return '' # There is no primary selection
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from kitty.fast_data_types import get_primary_selection
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return (get_primary_selection() or b'').decode('utf-8', 'replace')
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def base64_encode(
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integer,
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chars=string.ascii_uppercase + string.ascii_lowercase + string.digits +
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'+/'
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):
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ans = ''
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while True:
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integer, remainder = divmod(integer, 64)
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ans = chars[remainder] + ans
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if integer == 0:
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break
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return ans
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def command_for_open(program='default'):
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if isinstance(program, str):
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from .conf.utils import to_cmdline
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program = to_cmdline(program)
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if program == ['default']:
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cmd = ['open'] if is_macos else ['xdg-open']
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else:
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cmd = program
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return cmd
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def open_cmd(cmd, arg=None, cwd=None):
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import subprocess
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if arg is not None:
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cmd = list(cmd)
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cmd.append(arg)
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return subprocess.Popen(cmd, stdin=subprocess.DEVNULL, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, cwd=cwd or None)
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def open_url(url, program='default', cwd=None):
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return open_cmd(command_for_open(program), url, cwd=cwd)
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def detach(fork=True, setsid=True, redirect=True):
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if fork:
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# Detach from the controlling process.
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if os.fork() != 0:
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raise SystemExit(0)
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if setsid:
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os.setsid()
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if redirect:
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from .fast_data_types import redirect_std_streams
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redirect_std_streams(os.devnull)
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def adjust_line_height(cell_height, val):
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if isinstance(val, int):
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return cell_height + val
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return int(cell_height * val)
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def init_startup_notification_x11(window_handle, startup_id=None):
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# https://specifications.freedesktop.org/startup-notification-spec/startup-notification-latest.txt
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from kitty.fast_data_types import init_x11_startup_notification
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sid = startup_id or os.environ.pop('DESKTOP_STARTUP_ID', None) # ensure child processes don't get this env var
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if not sid:
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return
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from .fast_data_types import x11_display
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display = x11_display()
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if not display:
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return
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return init_x11_startup_notification(display, window_handle, sid)
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def end_startup_notification_x11(ctx):
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from kitty.fast_data_types import end_x11_startup_notification
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end_x11_startup_notification(ctx)
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def init_startup_notification(window_handle, startup_id=None):
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if is_macos or is_wayland:
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return
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if window_handle is None:
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log_error('Could not perform startup notification as window handle not present')
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return
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try:
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return init_startup_notification_x11(window_handle, startup_id)
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except Exception:
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import traceback
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traceback.print_exc()
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def end_startup_notification(ctx):
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if not ctx:
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return
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if is_macos or is_wayland:
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return
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try:
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end_startup_notification_x11(ctx)
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except Exception:
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import traceback
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traceback.print_exc()
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class startup_notification_handler:
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def __init__(self, do_notify=True, startup_id=None, extra_callback=None):
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self.do_notify = do_notify
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self.startup_id = startup_id
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self.extra_callback = extra_callback
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self.ctx = None
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def __enter__(self):
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def pre_show_callback(window_handle):
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if self.extra_callback is not None:
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self.extra_callback(window_handle)
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if self.do_notify:
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self.ctx = init_startup_notification(window_handle, self.startup_id)
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return pre_show_callback
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def __exit__(self, *a):
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if self.ctx is not None:
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end_startup_notification(self.ctx)
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def remove_socket_file(s, path=None):
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try:
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s.close()
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except EnvironmentError:
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pass
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if path:
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try:
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os.unlink(path)
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except EnvironmentError:
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pass
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def unix_socket_paths(name, ext='.lock'):
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import tempfile
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home = os.path.expanduser('~')
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candidates = [tempfile.gettempdir(), home]
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if is_macos:
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from .fast_data_types import user_cache_dir
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candidates = [user_cache_dir(), '/Library/Caches']
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for loc in candidates:
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if os.access(loc, os.W_OK | os.R_OK | os.X_OK):
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filename = ('.' if loc == home else '') + name + ext
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yield os.path.join(loc, filename)
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def single_instance_unix(name):
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import socket
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for path in unix_socket_paths(name):
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socket_path = path.rpartition('.')[0] + '.sock'
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fd = os.open(path, os.O_CREAT | os.O_WRONLY | os.O_TRUNC | os.O_CLOEXEC)
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try:
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fcntl.lockf(fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
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except EnvironmentError as err:
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if err.errno in (errno.EAGAIN, errno.EACCES):
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# Client
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s = socket.socket(family=socket.AF_UNIX)
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s.connect(socket_path)
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single_instance.socket = s
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return False
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raise
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s = socket.socket(family=socket.AF_UNIX)
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try:
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s.bind(socket_path)
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except EnvironmentError as err:
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if err.errno in (errno.EADDRINUSE, errno.EEXIST):
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os.unlink(socket_path)
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s.bind(socket_path)
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else:
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raise
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single_instance.socket = s # prevent garbage collection from closing the socket
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atexit.register(remove_socket_file, s, socket_path)
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s.listen()
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s.set_inheritable(False)
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return True
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def single_instance(group_id=None):
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import socket
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name = '{}-ipc-{}'.format(appname, os.geteuid())
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if group_id:
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name += '-{}'.format(group_id)
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s = socket.socket(family=socket.AF_UNIX)
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# First try with abstract UDS
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addr = '\0' + name
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try:
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s.bind(addr)
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except EnvironmentError as err:
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if err.errno == errno.ENOENT:
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return single_instance_unix(name)
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if err.errno == errno.EADDRINUSE:
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s.connect(addr)
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single_instance.socket = s
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return False
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raise
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s.listen()
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single_instance.socket = s # prevent garbage collection from closing the socket
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s.set_inheritable(False)
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atexit.register(remove_socket_file, s)
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return True
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def parse_address_spec(spec):
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import socket
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protocol, rest = spec.split(':', 1)
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socket_path = None
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if protocol == 'unix':
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family = socket.AF_UNIX
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address = rest
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if address.startswith('@') and len(address) > 1:
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address = '\0' + address[1:]
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else:
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socket_path = address
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elif protocol in ('tcp', 'tcp6'):
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family = socket.AF_INET if protocol == 'tcp' else socket.AF_INET6
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host, port = rest.rsplit(':', 1)
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address = host, int(port)
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else:
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raise ValueError('Unknown protocol in --listen-on value: {}'.format(spec))
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return family, address, socket_path
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def write_all(fd, data):
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if isinstance(data, str):
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data = data.encode('utf-8')
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while data:
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n = os.write(fd, data)
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if not n:
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break
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data = data[n:]
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class TTYIO:
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def __enter__(self):
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from .fast_data_types import open_tty
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self.tty_fd, self.original_termios = open_tty(True)
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return self
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def __exit__(self, *a):
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from .fast_data_types import close_tty
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close_tty(self.tty_fd, self.original_termios)
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def send(self, data):
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if isinstance(data, (str, bytes)):
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write_all(self.tty_fd, data)
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else:
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for chunk in data:
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write_all(self.tty_fd, chunk)
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def recv(self, more_needed, timeout, sz=1):
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fd = self.tty_fd
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start_time = monotonic()
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while timeout > monotonic() - start_time:
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# will block for 0.1 secs waiting for data because we have set
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# VMIN=0 VTIME=1 in termios
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data = os.read(fd, sz)
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if data and not more_needed(data):
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break
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def natsort_ints(iterable):
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def convert(text):
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return int(text) if text.isdigit() else text
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def alphanum_key(key):
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return tuple(map(convert, re.split(r'(\d+)', key)))
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return sorted(iterable, key=alphanum_key)
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def exe_exists(exe):
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for loc in os.environ.get('PATH', '').split(os.pathsep):
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if loc and os.access(os.path.join(loc, exe), os.X_OK):
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return os.path.join(loc, exe)
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return False
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def get_editor():
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ans = getattr(get_editor, 'ans', False)
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if ans is False:
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import shlex
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ans = os.environ.get('EDITOR')
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if not ans or not exe_exists(shlex.split(ans)[0]):
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for q in ('vim', 'vi', 'emacs', 'micro', 'nano'):
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r = exe_exists(q)
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if r:
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ans = r
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break
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else:
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ans = 'vim'
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ans = shlex.split(ans)
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get_editor.ans = ans
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return ans
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