awaforge

fontWoff

AGPL-3.0-onlyRelease 2L4

WOFF 1.0 container — RFC 8311 §3, zlib envelope around an SFNT.

Module fontWoff | Source packages/front/office/fonts/src/sfnt/woff.js | Deps fontErrors, fontsShared, fontReader, fontWriter, fontTag, zlib | Worker-safe yes

Decodes the WOFF1 envelope (wOFF signature + table directory) into a standalone SFNT. zlib decompression is injected by the caller (@awacloud/fw/io/compress/zlib) — no hard dependency on fw.

Exports

Symbol Type Description
WOFF_MAGIC const 0x774F4646 ('wOFF').
parseWoff1Header function (bytes) => { signature, flavor, length, numTables, totalSfntSize, … }.
decodeWoff1 function (bytes, deps?) => Uint8Array (reassembled SFNT). deps.zlib overrides the DI-injected zlib module.
parseHeader / decode function One-argument aliases of parseWoff1Header and of decodeWoff1 bound to the DI-injected zlib.
fontWoff factory Factory { name, dependencies, factory }.

Usage

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

for (const m of [...fw_require, ...modules]) fw.runtime.register(m);
const { decode } = fw.runtime.resolve('fontWoff');
const sfnt = decode(woffBytes);   // standalone SFNT bytes (zlib is DI-injected)

Notes

  • A table whose compLength === origLength is kept raw (no zlib).
  • The meta / priv blocks (XML metadata, private data) are ignored on decode.

See also