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support other SQLite wrappers, and various hooks needed by grist-static (#516)

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This commit is contained in:
Paul Fitzpatrick
2023-05-23 15:17:28 -04:00
committed by GitHub
parent bd474a382f
commit 7be0ee289d
42 changed files with 684 additions and 249 deletions
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11
app/common/marshal.ts
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@@ -33,6 +33,13 @@ import * as util from 'util';
export interface MarshalOptions {
stringToBuffer?: boolean;
version?: number;
// True if we want keys in dicts to be buffers.
// It is convenient to have some freedom here to simplify implementation
// of marshaling for some SQLite wrappers. This flag was initially
// introduced for a fork of Grist using better-sqlite3, and I don't
// remember exactly what the issues were.
keysAreBuffers?: boolean;
}
export interface UnmarshalOptions {
@@ -129,11 +136,13 @@ export class Marshaller {
private _memBuf: MemBuffer;
private readonly _floatCode: number;
private readonly _stringCode: number;
private readonly _keysAreBuffers: boolean;
constructor(options?: MarshalOptions) {
this._memBuf = new MemBuffer(undefined);
this._floatCode = options && options.version && options.version >= 2 ? marshalCodes.BFLOAT : marshalCodes.FLOAT;
this._stringCode = options && options.stringToBuffer ? marshalCodes.STRING : marshalCodes.UNICODE;
this._keysAreBuffers = Boolean(options?.keysAreBuffers);
}
public dump(): Uint8Array {
@@ -261,7 +270,7 @@ export class Marshaller {
const keys = Object.keys(obj);
keys.sort();
for (const key of keys) {
this.marshal(key);
this.marshal(this._keysAreBuffers ? Buffer.from(key) : key);
this.marshal(obj[key]);
}
this._memBuf.writeUint8(marshalCodes.NULL);