File size: 3,043 Bytes
5b76e0f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | from __future__ import annotations
import os
import shlex
from typing import Iterable
from textual.app import App
from textual._import_app import import_app
# This module defines our "Custom Fences", powered by SuperFences
# @link https://facelessuser.github.io/pymdown-extensions/extensions/superfences/#custom-fences
def format_svg(source, language, css_class, options, md, attrs, **kwargs) -> str:
"""A superfences formatter to insert an SVG screenshot."""
try:
cmd: list[str] = shlex.split(attrs["path"])
path = cmd[0]
_press = attrs.get("press", None)
press = [*_press.split(",")] if _press else ["_"]
title = attrs.get("title")
print(f"screenshotting {path!r}")
cwd = os.getcwd()
try:
rows = int(attrs.get("lines", 24))
columns = int(attrs.get("columns", 80))
svg = take_svg_screenshot(
None, path, press, title, terminal_size=(rows, columns)
)
finally:
os.chdir(cwd)
assert svg is not None
return svg
except Exception as error:
import traceback
traceback.print_exception(error)
def take_svg_screenshot(
app: App | None = None,
app_path: str | None = None,
press: Iterable[str] = ("_",),
title: str | None = None,
terminal_size: tuple[int, int] = (24, 80),
) -> str:
"""
Args:
app: An app instance. Must be supplied if app_path is not.
app_path: A path to an app. Must be supplied if app is not.
press: Key presses to run before taking screenshot. "_" is a short pause.
title: The terminal title in the output image.
terminal_size: A pair of integers (rows, columns), representing terminal size.
Returns:
str: An SVG string, showing the content of the terminal window at the time
the screenshot was taken.
"""
rows, columns = terminal_size
os.environ["COLUMNS"] = str(columns)
os.environ["LINES"] = str(rows)
if app is None:
app = import_app(app_path)
if title is None:
title = app.title
app.run(
quit_after=5,
press=press or ["ctrl+c"],
headless=True,
screenshot=True,
screenshot_title=title,
)
svg = app._screenshot
return svg
def rich(source, language, css_class, options, md, attrs, **kwargs) -> str:
"""A superfences formatter to insert an SVG screenshot."""
import io
from rich.console import Console
title = attrs.get("title", "Rich")
console = Console(
file=io.StringIO(),
record=True,
force_terminal=True,
color_system="truecolor",
)
error_console = Console(stderr=True)
globals: dict = {}
try:
exec(source, globals)
except Exception:
error_console.print_exception()
# console.bell()
if "output" in globals:
console.print(globals["output"])
output_svg = console.export_svg(title=title)
return output_svg
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