feat: parse FSSHTTP table of contents stores

src/onenote/parser/parse-toc.ts

@@ -6,6 +6,8 @@ import { BinaryReader } from '../binary/BinaryReader.js';
 import { readGuid } from '../binary/guid.js';
 import type { ParserDiagnostic } from '../model/diagnostics.js';
 import { parseDesktopOneNoteTableOfContentsStore } from '../onestore/desktop-store.js';
+import type { DesktopOneStore } from '../onestore/desktop-store.js';
+import { parseFssHttpOneStore } from '../onestore/fsshttp-store.js';
 import {
   countObjectReferences,
   findProperty,
@@ -13,7 +15,7 @@ import {
 } from '../onestore/property-set.js';
 import type { ExGuid, ObjectSpace, StoreObject } from '../onestore/types.js';
 import { exGuidKey } from '../onestore/types.js';
-import { toBytes } from './detect-format.js';
+import { detectOneNoteFormat, toBytes } from './detect-format.js';
 import { OneNoteParserError } from './error.js';
 import type { OneNoteParserLimits } from './limits.js';
 import { resolveParserLimits } from './limits.js';
@@ -58,7 +60,7 @@ interface TocContext {
   active: Set<string>;
 }
 
-/** Parse a desktop revision-store `.onetoc2` without network access. */
+/** Parse a supported desktop or FSSHTTPB `.onetoc2` without network access. */
 export function parseOneNoteTableOfContents(
   input: ArrayBuffer | Uint8Array,
   options: ParseOneNoteTableOfContentsOptions = {}
@@ -66,11 +68,7 @@ export function parseOneNoteTableOfContents(
   const bytes = toBytes(input);
   const limits = resolveParserLimits(options.limits);
   const diagnostics: ParserDiagnostic[] = [];
-  const store = parseDesktopOneNoteTableOfContentsStore(
-    bytes,
-    limits,
-    diagnostics
-  );
+  const store = parseTableOfContentsStore(bytes, limits, diagnostics);
   const space = store.rootObjectSpace;
   const rootId = space.roots.get(1);
   if (!rootId) {
@@ -110,6 +108,25 @@ export function parseOneNoteTableOfContents(
   };
 }
 
+function parseTableOfContentsStore(
+  bytes: Uint8Array,
+  limits: OneNoteParserLimits,
+  diagnostics: ParserDiagnostic[]
+): DesktopOneStore {
+  const store =
+    detectOneNoteFormat(bytes).kind === 'fsshttp-one'
+      ? parseFssHttpOneStore(bytes, limits, diagnostics)
+      : parseDesktopOneNoteTableOfContentsStore(bytes, limits, diagnostics);
+  if (store.kind !== 'table-of-contents') {
+    throw new OneNoteParserError(
+      'INVALID_FORMAT',
+      'Expected a OneNote table of contents, found a section',
+      { structure: 'OneStore table of contents' }
+    );
+  }
+  return store;
+}
+
 function parseChildren(
   context: TocContext,
   parent: StoreObject,