mirror of https://github.com/morpheus65535/bazarr
711 lines
26 KiB
Python
711 lines
26 KiB
Python
import os.path
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import platform
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import textwrap
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from abc import ABC, abstractmethod
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from typing import Any, Dict, Iterable, Optional, Set, Tuple, Type, Union
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from pygments.lexers import get_lexer_by_name, guess_lexer_for_filename
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from pygments.style import Style as PygmentsStyle
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from pygments.styles import get_style_by_name
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from pygments.token import (
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Comment,
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Error,
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Generic,
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Keyword,
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Name,
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Number,
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Operator,
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String,
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Token,
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Whitespace,
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)
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from pygments.util import ClassNotFound
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from ._loop import loop_first
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from .color import Color, blend_rgb
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from .console import Console, ConsoleOptions, JustifyMethod, RenderResult, Segment
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from .jupyter import JupyterMixin
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from .measure import Measurement
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from .style import Style
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from .text import Text
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TokenType = Tuple[str, ...]
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WINDOWS = platform.system() == "Windows"
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DEFAULT_THEME = "monokai"
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# The following styles are based on https://github.com/pygments/pygments/blob/master/pygments/formatters/terminal.py
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# A few modifications were made
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ANSI_LIGHT: Dict[TokenType, Style] = {
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Token: Style(),
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Whitespace: Style(color="white"),
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Comment: Style(dim=True),
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Comment.Preproc: Style(color="cyan"),
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Keyword: Style(color="blue"),
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Keyword.Type: Style(color="cyan"),
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Operator.Word: Style(color="magenta"),
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Name.Builtin: Style(color="cyan"),
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Name.Function: Style(color="green"),
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Name.Namespace: Style(color="cyan", underline=True),
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Name.Class: Style(color="green", underline=True),
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Name.Exception: Style(color="cyan"),
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Name.Decorator: Style(color="magenta", bold=True),
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Name.Variable: Style(color="red"),
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Name.Constant: Style(color="red"),
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Name.Attribute: Style(color="cyan"),
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Name.Tag: Style(color="bright_blue"),
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String: Style(color="yellow"),
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Number: Style(color="blue"),
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Generic.Deleted: Style(color="bright_red"),
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Generic.Inserted: Style(color="green"),
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Generic.Heading: Style(bold=True),
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Generic.Subheading: Style(color="magenta", bold=True),
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Generic.Prompt: Style(bold=True),
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Generic.Error: Style(color="bright_red"),
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Error: Style(color="red", underline=True),
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}
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ANSI_DARK: Dict[TokenType, Style] = {
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Token: Style(),
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Whitespace: Style(color="bright_black"),
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Comment: Style(dim=True),
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Comment.Preproc: Style(color="bright_cyan"),
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Keyword: Style(color="bright_blue"),
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Keyword.Type: Style(color="bright_cyan"),
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Operator.Word: Style(color="bright_magenta"),
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Name.Builtin: Style(color="bright_cyan"),
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Name.Function: Style(color="bright_green"),
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Name.Namespace: Style(color="bright_cyan", underline=True),
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Name.Class: Style(color="bright_green", underline=True),
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Name.Exception: Style(color="bright_cyan"),
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Name.Decorator: Style(color="bright_magenta", bold=True),
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Name.Variable: Style(color="bright_red"),
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Name.Constant: Style(color="bright_red"),
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Name.Attribute: Style(color="bright_cyan"),
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Name.Tag: Style(color="bright_blue"),
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String: Style(color="yellow"),
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Number: Style(color="bright_blue"),
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Generic.Deleted: Style(color="bright_red"),
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Generic.Inserted: Style(color="bright_green"),
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Generic.Heading: Style(bold=True),
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Generic.Subheading: Style(color="bright_magenta", bold=True),
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Generic.Prompt: Style(bold=True),
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Generic.Error: Style(color="bright_red"),
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Error: Style(color="red", underline=True),
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}
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RICH_SYNTAX_THEMES = {"ansi_light": ANSI_LIGHT, "ansi_dark": ANSI_DARK}
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class SyntaxTheme(ABC):
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"""Base class for a syntax theme."""
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@abstractmethod
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def get_style_for_token(self, token_type: TokenType) -> Style:
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"""Get a style for a given Pygments token."""
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raise NotImplementedError # pragma: no cover
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@abstractmethod
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def get_background_style(self) -> Style:
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"""Get the background color."""
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raise NotImplementedError # pragma: no cover
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class PygmentsSyntaxTheme(SyntaxTheme):
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"""Syntax theme that delagates to Pygments theme."""
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def __init__(self, theme: Union[str, Type[PygmentsStyle]]) -> None:
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self._style_cache: Dict[TokenType, Style] = {}
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if isinstance(theme, str):
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try:
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self._pygments_style_class = get_style_by_name(theme)
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except ClassNotFound:
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self._pygments_style_class = get_style_by_name("default")
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else:
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self._pygments_style_class = theme
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self._background_color = self._pygments_style_class.background_color
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self._background_style = Style(bgcolor=self._background_color)
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def get_style_for_token(self, token_type: TokenType) -> Style:
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"""Get a style from a Pygments class."""
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try:
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return self._style_cache[token_type]
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except KeyError:
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try:
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pygments_style = self._pygments_style_class.style_for_token(token_type)
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except KeyError:
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style = Style.null()
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else:
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color = pygments_style["color"]
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bgcolor = pygments_style["bgcolor"]
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style = Style(
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color="#" + color if color else "#000000",
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bgcolor="#" + bgcolor if bgcolor else self._background_color,
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bold=pygments_style["bold"],
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italic=pygments_style["italic"],
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underline=pygments_style["underline"],
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)
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self._style_cache[token_type] = style
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return style
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def get_background_style(self) -> Style:
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return self._background_style
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class ANSISyntaxTheme(SyntaxTheme):
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"""Syntax theme to use standard colors."""
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def __init__(self, style_map: Dict[TokenType, Style]) -> None:
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self.style_map = style_map
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self._missing_style = Style.null()
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self._background_style = Style.null()
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self._style_cache: Dict[TokenType, Style] = {}
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def get_style_for_token(self, token_type: TokenType) -> Style:
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"""Look up style in the style map."""
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try:
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return self._style_cache[token_type]
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except KeyError:
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# Styles form a hierarchy
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# We need to go from most to least specific
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# e.g. ("foo", "bar", "baz") to ("foo", "bar") to ("foo",)
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get_style = self.style_map.get
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token = tuple(token_type)
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style = self._missing_style
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while token:
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_style = get_style(token)
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if _style is not None:
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style = _style
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break
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token = token[:-1]
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self._style_cache[token_type] = style
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return style
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def get_background_style(self) -> Style:
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return self._background_style
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class Syntax(JupyterMixin):
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"""Construct a Syntax object to render syntax highlighted code.
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Args:
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code (str): Code to highlight.
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lexer_name (str): Lexer to use (see https://pygments.org/docs/lexers/)
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theme (str, optional): Color theme, aka Pygments style (see https://pygments.org/docs/styles/#getting-a-list-of-available-styles). Defaults to "monokai".
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dedent (bool, optional): Enable stripping of initial whitespace. Defaults to False.
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line_numbers (bool, optional): Enable rendering of line numbers. Defaults to False.
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start_line (int, optional): Starting number for line numbers. Defaults to 1.
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line_range (Tuple[int, int], optional): If given should be a tuple of the start and end line to render.
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highlight_lines (Set[int]): A set of line numbers to highlight.
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code_width: Width of code to render (not including line numbers), or ``None`` to use all available width.
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tab_size (int, optional): Size of tabs. Defaults to 4.
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word_wrap (bool, optional): Enable word wrapping.
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background_color (str, optional): Optional background color, or None to use theme color. Defaults to None.
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indent_guides (bool, optional): Show indent guides. Defaults to False.
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"""
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_pygments_style_class: Type[PygmentsStyle]
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_theme: SyntaxTheme
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@classmethod
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def get_theme(cls, name: Union[str, SyntaxTheme]) -> SyntaxTheme:
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"""Get a syntax theme instance."""
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if isinstance(name, SyntaxTheme):
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return name
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theme: SyntaxTheme
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if name in RICH_SYNTAX_THEMES:
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theme = ANSISyntaxTheme(RICH_SYNTAX_THEMES[name])
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else:
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theme = PygmentsSyntaxTheme(name)
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return theme
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def __init__(
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self,
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code: str,
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lexer_name: str,
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*,
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theme: Union[str, SyntaxTheme] = DEFAULT_THEME,
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dedent: bool = False,
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line_numbers: bool = False,
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start_line: int = 1,
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line_range: Tuple[int, int] = None,
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highlight_lines: Set[int] = None,
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code_width: Optional[int] = None,
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tab_size: int = 4,
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word_wrap: bool = False,
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background_color: str = None,
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indent_guides: bool = False,
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) -> None:
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self.code = code
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self.lexer_name = lexer_name
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self.dedent = dedent
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self.line_numbers = line_numbers
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self.start_line = start_line
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self.line_range = line_range
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self.highlight_lines = highlight_lines or set()
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self.code_width = code_width
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self.tab_size = tab_size
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self.word_wrap = word_wrap
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self.background_color = background_color
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self.background_style = (
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Style(bgcolor=background_color) if background_color else Style()
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)
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self.indent_guides = indent_guides
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self._theme = self.get_theme(theme)
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@classmethod
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def from_path(
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cls,
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path: str,
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encoding: str = "utf-8",
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theme: Union[str, SyntaxTheme] = DEFAULT_THEME,
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dedent: bool = False,
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line_numbers: bool = False,
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line_range: Tuple[int, int] = None,
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start_line: int = 1,
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highlight_lines: Set[int] = None,
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code_width: Optional[int] = None,
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tab_size: int = 4,
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word_wrap: bool = False,
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background_color: str = None,
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indent_guides: bool = False,
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) -> "Syntax":
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"""Construct a Syntax object from a file.
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Args:
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path (str): Path to file to highlight.
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encoding (str): Encoding of file.
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theme (str, optional): Color theme, aka Pygments style (see https://pygments.org/docs/styles/#getting-a-list-of-available-styles). Defaults to "emacs".
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dedent (bool, optional): Enable stripping of initial whitespace. Defaults to True.
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line_numbers (bool, optional): Enable rendering of line numbers. Defaults to False.
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start_line (int, optional): Starting number for line numbers. Defaults to 1.
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line_range (Tuple[int, int], optional): If given should be a tuple of the start and end line to render.
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highlight_lines (Set[int]): A set of line numbers to highlight.
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code_width: Width of code to render (not including line numbers), or ``None`` to use all available width.
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tab_size (int, optional): Size of tabs. Defaults to 4.
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word_wrap (bool, optional): Enable word wrapping of code.
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background_color (str, optional): Optional background color, or None to use theme color. Defaults to None.
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indent_guides (bool, optional): Show indent guides. Defaults to False.
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Returns:
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[Syntax]: A Syntax object that may be printed to the console
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"""
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with open(path, "rt", encoding=encoding) as code_file:
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code = code_file.read()
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lexer = None
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lexer_name = "default"
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try:
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_, ext = os.path.splitext(path)
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if ext:
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extension = ext.lstrip(".").lower()
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lexer = get_lexer_by_name(extension)
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lexer_name = lexer.name
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except ClassNotFound:
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pass
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if lexer is None:
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try:
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lexer_name = guess_lexer_for_filename(path, code).name
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except ClassNotFound:
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pass
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return cls(
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code,
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lexer_name,
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theme=theme,
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dedent=dedent,
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line_numbers=line_numbers,
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line_range=line_range,
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start_line=start_line,
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highlight_lines=highlight_lines,
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code_width=code_width,
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tab_size=tab_size,
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word_wrap=word_wrap,
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background_color=background_color,
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indent_guides=indent_guides,
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)
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def _get_base_style(self) -> Style:
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"""Get the base style."""
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# default_style = (
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# Style(bgcolor=self.background_color)
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# if self.background_color is not None
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# else self._theme.get_background_style()
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# )
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default_style = self._theme.get_background_style() + self.background_style
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return default_style
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def _get_token_color(self, token_type: TokenType) -> Optional[Color]:
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"""Get a color (if any) for the given token.
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Args:
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token_type (TokenType): A token type tuple from Pygments.
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Returns:
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Optional[Color]: Color from theme, or None for no color.
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"""
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style = self._theme.get_style_for_token(token_type)
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return style.color
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def highlight(self, code: str, line_range: Tuple[int, int] = None) -> Text:
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"""Highlight code and return a Text instance.
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Args:
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code (str): Code to highlight.
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line_range(Tuple[int, int], optional): Optional line range to highlight.
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Returns:
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Text: A text instance containing highlighted syntax.
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"""
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base_style = self._get_base_style()
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justify: JustifyMethod = (
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"default" if base_style.transparent_background else "left"
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)
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text = Text(
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justify=justify,
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style=base_style,
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tab_size=self.tab_size,
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no_wrap=not self.word_wrap,
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)
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_get_theme_style = self._theme.get_style_for_token
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try:
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lexer = get_lexer_by_name(self.lexer_name)
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except ClassNotFound:
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text.append(code)
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else:
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if line_range:
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# More complicated path to only stylize a portion of the code
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# This speeds up further operations as there are less spans to process
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line_start, line_end = line_range
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def line_tokenize() -> Iterable[Tuple[Any, str]]:
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"""Split tokens to one per line."""
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for token_type, token in lexer.get_tokens(code):
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while token:
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line_token, new_line, token = token.partition("\n")
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yield token_type, line_token + new_line
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def tokens_to_spans() -> Iterable[Tuple[str, Optional[Style]]]:
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"""Convert tokens to spans."""
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tokens = iter(line_tokenize())
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line_no = 0
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_line_start = line_start - 1
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# Skip over tokens until line start
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while line_no < _line_start:
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_token_type, token = next(tokens)
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yield (token, None)
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if token.endswith("\n"):
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line_no += 1
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# Generate spans until line end
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for token_type, token in tokens:
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yield (token, _get_theme_style(token_type))
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if token.endswith("\n"):
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line_no += 1
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if line_no >= line_end:
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break
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text.append_tokens(tokens_to_spans())
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else:
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text.append_tokens(
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(token, _get_theme_style(token_type))
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for token_type, token in lexer.get_tokens(code)
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)
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if self.background_color is not None:
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text.stylize(f"on {self.background_color}")
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return text
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def _get_line_numbers_color(self, blend: float = 0.3) -> Color:
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background_style = self._theme.get_background_style() + self.background_style
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background_color = background_style.bgcolor
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if background_color is None or background_color.is_system_defined:
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return Color.default()
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foreground_color = self._get_token_color(Token.Text)
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if foreground_color is None or foreground_color.is_system_defined:
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return foreground_color or Color.default()
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new_color = blend_rgb(
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background_color.get_truecolor(),
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foreground_color.get_truecolor(),
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cross_fade=blend,
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)
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return Color.from_triplet(new_color)
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@property
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def _numbers_column_width(self) -> int:
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"""Get the number of characters used to render the numbers column."""
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column_width = 0
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if self.line_numbers:
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column_width = len(str(self.start_line + self.code.count("\n"))) + 2
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return column_width
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def _get_number_styles(self, console: Console) -> Tuple[Style, Style, Style]:
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"""Get background, number, and highlight styles for line numbers."""
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background_style = self._get_base_style()
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if background_style.transparent_background:
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return Style.null(), Style(dim=True), Style.null()
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if console.color_system in ("256", "truecolor"):
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number_style = Style.chain(
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background_style,
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self._theme.get_style_for_token(Token.Text),
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Style(color=self._get_line_numbers_color()),
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self.background_style,
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)
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highlight_number_style = Style.chain(
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background_style,
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self._theme.get_style_for_token(Token.Text),
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Style(bold=True, color=self._get_line_numbers_color(0.9)),
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self.background_style,
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)
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else:
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number_style = background_style + Style(dim=True)
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highlight_number_style = background_style + Style(dim=False)
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return background_style, number_style, highlight_number_style
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def __rich_measure__(
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self, console: "Console", options: "ConsoleOptions"
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) -> "Measurement":
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if self.code_width is not None:
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width = self.code_width + self._numbers_column_width
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return Measurement(self._numbers_column_width, width)
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return Measurement(self._numbers_column_width, options.max_width)
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def __rich_console__(
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self, console: Console, options: ConsoleOptions
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) -> RenderResult:
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transparent_background = self._get_base_style().transparent_background
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code_width = (
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(
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(options.max_width - self._numbers_column_width - 1)
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if self.line_numbers
|
|
else options.max_width
|
|
)
|
|
if self.code_width is None
|
|
else self.code_width
|
|
)
|
|
|
|
line_offset = 0
|
|
if self.line_range:
|
|
start_line, end_line = self.line_range
|
|
line_offset = max(0, start_line - 1)
|
|
|
|
code = textwrap.dedent(self.code) if self.dedent else self.code
|
|
code = code.expandtabs(self.tab_size)
|
|
text = self.highlight(code, self.line_range)
|
|
text.remove_suffix("\n")
|
|
|
|
(
|
|
background_style,
|
|
number_style,
|
|
highlight_number_style,
|
|
) = self._get_number_styles(console)
|
|
|
|
if not self.line_numbers and not self.word_wrap and not self.line_range:
|
|
# Simple case of just rendering text
|
|
style = (
|
|
self._get_base_style()
|
|
+ self._theme.get_style_for_token(Comment)
|
|
+ Style(dim=True)
|
|
+ self.background_style
|
|
)
|
|
if self.indent_guides and not options.ascii_only:
|
|
text = text.with_indent_guides(self.tab_size, style=style)
|
|
text.overflow = "crop"
|
|
if style.transparent_background:
|
|
yield from console.render(
|
|
text, options=options.update(width=code_width)
|
|
)
|
|
else:
|
|
syntax_lines = console.render_lines(
|
|
text,
|
|
options.update(width=code_width, height=None),
|
|
style=self.background_style,
|
|
pad=True,
|
|
new_lines=True,
|
|
)
|
|
for syntax_line in syntax_lines:
|
|
yield from syntax_line
|
|
return
|
|
|
|
lines = text.split("\n")
|
|
if self.line_range:
|
|
lines = lines[line_offset:end_line]
|
|
|
|
if self.indent_guides and not options.ascii_only:
|
|
style = (
|
|
self._get_base_style()
|
|
+ self._theme.get_style_for_token(Comment)
|
|
+ Style(dim=True)
|
|
+ self.background_style
|
|
)
|
|
lines = (
|
|
Text("\n")
|
|
.join(lines)
|
|
.with_indent_guides(self.tab_size, style=style)
|
|
.split("\n")
|
|
)
|
|
|
|
numbers_column_width = self._numbers_column_width
|
|
render_options = options.update(width=code_width)
|
|
|
|
highlight_line = self.highlight_lines.__contains__
|
|
_Segment = Segment
|
|
padding = _Segment(" " * numbers_column_width + " ", background_style)
|
|
new_line = _Segment("\n")
|
|
|
|
line_pointer = "> " if options.legacy_windows else "❱ "
|
|
|
|
for line_no, line in enumerate(lines, self.start_line + line_offset):
|
|
if self.word_wrap:
|
|
wrapped_lines = console.render_lines(
|
|
line,
|
|
render_options.update(height=None),
|
|
style=background_style,
|
|
pad=not transparent_background,
|
|
)
|
|
|
|
else:
|
|
segments = list(line.render(console, end=""))
|
|
if options.no_wrap:
|
|
wrapped_lines = [segments]
|
|
else:
|
|
wrapped_lines = [
|
|
_Segment.adjust_line_length(
|
|
segments,
|
|
render_options.max_width,
|
|
style=background_style,
|
|
pad=not transparent_background,
|
|
)
|
|
]
|
|
if self.line_numbers:
|
|
for first, wrapped_line in loop_first(wrapped_lines):
|
|
if first:
|
|
line_column = str(line_no).rjust(numbers_column_width - 2) + " "
|
|
if highlight_line(line_no):
|
|
yield _Segment(line_pointer, Style(color="red"))
|
|
yield _Segment(line_column, highlight_number_style)
|
|
else:
|
|
yield _Segment(" ", highlight_number_style)
|
|
yield _Segment(line_column, number_style)
|
|
else:
|
|
yield padding
|
|
yield from wrapped_line
|
|
yield new_line
|
|
else:
|
|
for wrapped_line in wrapped_lines:
|
|
yield from wrapped_line
|
|
yield new_line
|
|
|
|
|
|
if __name__ == "__main__": # pragma: no cover
|
|
|
|
import argparse
|
|
import sys
|
|
|
|
parser = argparse.ArgumentParser(
|
|
description="Render syntax to the console with Rich"
|
|
)
|
|
parser.add_argument(
|
|
"path",
|
|
metavar="PATH",
|
|
help="path to file, or - for stdin",
|
|
)
|
|
parser.add_argument(
|
|
"-c",
|
|
"--force-color",
|
|
dest="force_color",
|
|
action="store_true",
|
|
default=None,
|
|
help="force color for non-terminals",
|
|
)
|
|
parser.add_argument(
|
|
"-i",
|
|
"--indent-guides",
|
|
dest="indent_guides",
|
|
action="store_true",
|
|
default=False,
|
|
help="display indent guides",
|
|
)
|
|
parser.add_argument(
|
|
"-l",
|
|
"--line-numbers",
|
|
dest="line_numbers",
|
|
action="store_true",
|
|
help="render line numbers",
|
|
)
|
|
parser.add_argument(
|
|
"-w",
|
|
"--width",
|
|
type=int,
|
|
dest="width",
|
|
default=None,
|
|
help="width of output (default will auto-detect)",
|
|
)
|
|
parser.add_argument(
|
|
"-r",
|
|
"--wrap",
|
|
dest="word_wrap",
|
|
action="store_true",
|
|
default=False,
|
|
help="word wrap long lines",
|
|
)
|
|
parser.add_argument(
|
|
"-s",
|
|
"--soft-wrap",
|
|
action="store_true",
|
|
dest="soft_wrap",
|
|
default=False,
|
|
help="enable soft wrapping mode",
|
|
)
|
|
parser.add_argument(
|
|
"-t", "--theme", dest="theme", default="monokai", help="pygments theme"
|
|
)
|
|
parser.add_argument(
|
|
"-b",
|
|
"--background-color",
|
|
dest="background_color",
|
|
default=None,
|
|
help="Overide background color",
|
|
)
|
|
parser.add_argument(
|
|
"-x",
|
|
"--lexer",
|
|
default="default",
|
|
dest="lexer_name",
|
|
help="Lexer name",
|
|
)
|
|
args = parser.parse_args()
|
|
|
|
from rich.console import Console
|
|
|
|
console = Console(force_terminal=args.force_color, width=args.width)
|
|
|
|
if args.path == "-":
|
|
code = sys.stdin.read()
|
|
syntax = Syntax(
|
|
code=code,
|
|
lexer_name=args.lexer_name,
|
|
line_numbers=args.line_numbers,
|
|
word_wrap=args.word_wrap,
|
|
theme=args.theme,
|
|
background_color=args.background_color,
|
|
indent_guides=args.indent_guides,
|
|
)
|
|
else:
|
|
syntax = Syntax.from_path(
|
|
args.path,
|
|
line_numbers=args.line_numbers,
|
|
word_wrap=args.word_wrap,
|
|
theme=args.theme,
|
|
background_color=args.background_color,
|
|
indent_guides=args.indent_guides,
|
|
)
|
|
console.print(syntax, soft_wrap=args.soft_wrap)
|