@struktoai/mirage-core
Version:
A Unified Virtual Filesystem For AI Agents
61 lines • 2.65 kB
JavaScript
// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
import { enoent } from "../../errors/fs.js";
import { blobBytes } from "../vector/read.js";
import { tableOf } from "../vector/scope.js";
import { pointIdFromStem, rowStem } from "./naming.js";
import { fieldValue } from "./payload.js";
import { rowRecord } from "./query.js";
import { renderJson, renderText } from "./render.js";
async function rowOf(accessor, match, virtual) {
// The label is stripped before the retrieve, so every spelling that ends
// in __<id> reaches the point; only the stem readdir publishes names it,
// so an alias reads as absent rather than as the file.
const config = accessor.config;
const stem = match.slots.row_id ?? '';
const row = await rowRecord(accessor, tableOf(config.collection, match), config.idField, pointIdFromStem(stem, config));
if (row === null || rowStem(row, config) !== stem)
throw enoent(virtual);
return row;
}
async function readJson(accessor, match, path) {
const row = await rowOf(accessor, match, path.virtual);
return renderJson(row, accessor.config);
}
async function readText(accessor, match, path) {
const config = accessor.config;
const row = await rowOf(accessor, match, path.virtual);
if (config.textField === null ||
fieldValue(row, config.textField) === null ||
fieldValue(row, config.textField) === undefined) {
throw enoent(path.virtual);
}
return renderText(row, config);
}
async function readBlob(accessor, match, path) {
const config = accessor.config;
if (config.blobField === null)
throw enoent(path.virtual);
const row = await rowOf(accessor, match, path.virtual);
const value = fieldValue(row, config.blobField);
if (value === null || value === undefined)
throw enoent(path.virtual);
return blobBytes(value);
}
export const READERS = {
row_json: readJson,
row_text: readText,
row_blob: readBlob,
};
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