batgrl.text_tools#

Tools for text.

Module Attributes

`EGC_BASE`	A bit flag to mark egcs in canvas arrays.
`EGC_POOL`	Storage for extended grapheme clusters.
`EGCS`	Extended grapheme clusters currently stored in EGC_POOL and their index.

Functions

`_parse_batgrl_md`(text)	Parse batgrl markdown and return the minimum canvas size to fit text and a list of lines of styled characters.
`_smooth_bar`(blocks, max_length, proportion, ...)	Create a smooth bar with given blocks.
`_text_to_cells`(text)	Convert some text to a list of lists of cells and the minimum canvas size to fit them.
`_write_cells_to_canvas`(cells, canvas, ...)	Write a list of lists of cells to a canvas array.
`add_text`(canvas, text, *[, fg_color, ...])	Add multiple lines of text to a view of a canvas.
`canvas_as_text`(canvas[, line_widths])	Return a `Cell` array as a single multi-line string.
`egc_chr`(ord)	Return the extended grapheme cluster represented by `ord`.
`egc_ord`(text)	Return either a unicode codepoint or an index into the egc pool for the first extended grapheme cluster in `text`.
`is_word_char`(char)	Whether char is a word character.
`new_cell`([ord, style, fg_color, bg_color])	Create a 0-dimensional `cell_dtype` array.
`smooth_horizontal_bar`(max_width, proportion)	Create a horizontal bar that's some proportion of max_width at an offset.
`smooth_vertical_bar`(max_height, proportion)	Create a vertical bar that's some proportion of max_height at an offset.

Classes

Style(*values)

The graphic rendition parameters of a terminal cell.

batgrl.text_tools.EGCS: dict[str, int] = {}#: Extended grapheme clusters currently stored in EGC_POOL and their index.

batgrl.text_tools.EGC_BASE: Final = 1572864#: A bit flag to mark egcs in canvas arrays. Must be greater than sys.maxunicode.

batgrl.text_tools.EGC_POOL: list[str] = []#

Storage for extended grapheme clusters.

If ord_ is an ord in a canvas array and ord_ & EGC_BASE is non-zero, then ord_ - EGC_BASE is an index into EGC_POOL. In this way, we can use the uint32 “ord” field in canvas arrays to store both codepoints and egcs.

class batgrl.text_tools.Style(*values)#

Bases: IntFlag

The graphic rendition parameters of a terminal cell.

batgrl.text_tools.add_text(canvas: ndarray[tuple[int], dtype(['ord', '<u4', 'style', 'u1', 'fg_color', 'u1', 3, 'bg_color', 'u1', 3])] | ndarray[tuple[int, int], dtype(['ord', '<u4', 'style', 'u1', 'fg_color', 'u1', 3, 'bg_color', 'u1', 3])], text: str, *, fg_color: Color | None = None, bg_color: Color | None = None, markdown: bool = False, truncate_text: bool = False) → None#

Add multiple lines of text to a view of a canvas.

If markdown is true, text can be styled using batgrl markdown. The syntax is: - italic: *this is italic text* - bold: **this is bold text** - strikethrough: ~~this is strikethrough text~~ - underlined: __this is underlined text__ - overlined: ^^this is overlined text^^

Text is added starting at first index in canvas. Every new line is added on a new row.

Parameters:

canvasCell1D | Cell2D: A 1- or 2-dimensional view of a Cell array.
textstr: Text to add to canvas.
fg_colorColor | None, default: None: Foreground color of text. If not given, current canvas foreground color is used.
bg_colorColor | None, default: None: Background color of text. If not given, current canvas background color is used.
markdownbool, default: False: Whether to parse text for batgrl markdown.
truncate_textbool, default: False: For text that doesn’t fit on canvas, truncate text if true else raise an IndexError.

batgrl.text_tools.canvas_as_text(canvas: ndarray[tuple[int], dtype(['ord', '<u4', 'style', 'u1', 'fg_color', 'u1', 3, 'bg_color', 'u1', 3])] | ndarray[tuple[int, int], dtype(['ord', '<u4', 'style', 'u1', 'fg_color', 'u1', 3, 'bg_color', 'u1', 3])], line_widths: list[int] | None = None) → str#

Return a Cell array as a single multi-line string.

Parameters:

canvasCell1D | Cell2D: The Cell array to convert.
line_widthslist[int] | None: Optionally truncate line n to have column width line_widths[n]. If line_widths[n] is greater than the column width of line n it is ignored.

Returns:

str: The canvas as a multi-line string.

batgrl.text_tools.egc_chr(ord: int) → str#

Return the extended grapheme cluster represented by ord.

Parameters:

ordint: The ord of the extended grapheme cluster.

Returns:

str: The extended grapheme cluster represented by ord.

batgrl.text_tools#

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