@struktoai/mirage-core/dist/core/dev/read.js

A Unified Virtual Filesystem For AI Agents

// ========= 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 { read as ramRead } from "../ram/read.js";
import { norm } from "../../utils/path.js";
import { einval } from "../../errors/fs.js";
import { activeDevice, activePipe } from "./device.js";
const ENDLESS_READ = 'cannot read an endless device without a size';
export function read(accessor, path, signal) {
    const pipe = activePipe(accessor, norm(path.mountPath));
    if (pipe !== null)
        return pipe.read(path, null, signal);
    const device = activeDevice(accessor, norm(path.mountPath));
    if (device === null)
        return ramRead(accessor, path);
    if (device === 'null')
        return Promise.resolve(new Uint8Array(0));
    throw einval(path, ENDLESS_READ);
}
export function readRange(accessor, path, offset, size, signal) {
    const pipe = activePipe(accessor, norm(path.mountPath));
    if (pipe !== null)
        return pipe.read(path, size, signal);
    const device = activeDevice(accessor, norm(path.mountPath));
    if (device === null) {
        return ramRead(accessor, path, { offset, ...(size !== null ? { size } : {}) });
    }
    if (device === 'null')
        return Promise.resolve(new Uint8Array(0));
    if (size === null)
        throw einval(path, ENDLESS_READ);
    return Promise.resolve(new Uint8Array(size));
}
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