inpage-format (JavaScript / TypeScript)

TypeScript library for decoding InPage .INP Urdu/Arabic word processor files.

Works in Node.js 18+ and modern browsers (pure ESM, no native deps).

Install

npm install inpage-format

Usage

import * as CFB from 'cfb';
import { decodeV1V2, decodeV3, filterParagraphsWithMeta } from 'inpage-format';

const cfbFile = CFB.read(new Uint8Array(fileBuffer), { type: 'array' });
const entry = CFB.find(cfbFile, '/InPage200') ?? CFB.find(cfbFile, '/InPage300');
const stream = new Uint8Array(entry.content);
const version = entry.name.includes('300') ? 3 : 2;

const decoded = version === 3 ? decodeV3(stream) : decodeV1V2(stream);
const { paragraphs, filteredCount } = filterParagraphsWithMeta(
  decoded.paragraphs, decoded.paragraphMeta
);

paragraphs.forEach(p => console.log(p));

API

Export	Description
`decodeV1V2(data: Uint8Array)`	Decode InPage v1/v2 stream
`decodeV3(data: Uint8Array)`	Decode InPage v3 stream
`filterParagraphs(raw: string[])`	Remove noise paragraphs
`filterParagraphsWithMeta(raw, meta)`	Filter + return metadata + count
`CHAR_MAP_URDU`	110+ byte→Unicode mappings
`CHAR_MAP_ARABIC`	Arabic-mode overrides
`COMPOSITE_SEQUENCES`	4-byte composite sequence map
`isUrduChar(ch: string)`	Test if char is Urdu/Arabic
`PAGE_BREAK_MARKER`	Sentinel string for page breaks

Full documentation: github.com/iamahsanmehmood/inpage-format