awaforge

aatLcar

AGPL-3.0-onlyRelease 2L4

Table lcar — Ligature Caret (Apple TT RM06).

Module aatLcar | Source packages/front/office/fonts/src/extra/apple-aat/lcar.js | Deps fontErrors, fontReader | Worker-safe yes

Caret positions inside a ligature glyph, for placing an insertion point between components. format=0 = em-square division points; format=1 = control-point indices.

Exports

Symbol Type Description
parseLcar function (bytes) => { version, format, lookupFormat, lookupBytes, bytes } — lookupFormat and bytes (the full input, subarrayed from offset 0) were missing from a previous revision of this page (lcar.js lines 21–47).
readCaretBlock function (bytes, offset) => number[] — an array of int16 caret positions, not { count, carets } (lcar.js lines 49–61: return out;).
aatLcar factory Factory.

Usage

import fw from '@awacloud/fw';
import { fw_require, modules, extras } from '@awacloud/fonts';

for (const m of [...fw_require, ...modules, ...extras]) fw.runtime.register(m);
const { parseLcar, readCaretBlock } = fw.runtime.resolve('aatLcar');
const lcar = parseLcar(sfnt.tables.lcar.bytes);

Notes

  • The AAT lookup table (lookupFormat/lookupBytes) needed to resolve gid → caret block is not decoded, and no parsed/reason field signals this — see ./README.md.
  • Requires the fonts-apple-aat bundle.

See also