w1020/22.webpack/node_modules/memfs/lib/core/File.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.File = void 0;
const constants_1 = require("../constants");
const { O_APPEND } = constants_1.constants;
/**
 * Represents an open file (file descriptor) that points to a `Link` (Hard-link) and a `Node`.
 *
 * @todo Rename to `OpenFile`.
 */
class File {
    /**
     * Open a Link-Node pair. `node` is provided separately as that might be a different node
     * rather the one `link` points to, because it might be a symlink.
     * @param link
     * @param node
     * @param flags
     * @param fd
     */
    constructor(link, node, flags, fd) {
        this.link = link;
        this.node = node;
        this.flags = flags;
        this.fd = fd;
        this.position = 0;
        if (this.flags & O_APPEND)
            this.position = this.getSize();
    }
    getString(encoding = 'utf8') {
        return this.node.getString();
    }
    setString(str) {
        this.node.setString(str);
    }
    getBuffer() {
        return this.node.getBuffer();
    }
    setBuffer(buf) {
        this.node.setBuffer(buf);
    }
    getSize() {
        return this.node.getSize();
    }
    truncate(len) {
        this.node.truncate(len);
    }
    seekTo(position) {
        this.position = position;
    }
    write(buf, offset = 0, length = buf.length, position) {
        if (typeof position !== 'number')
            position = this.position;
        const bytes = this.node.write(buf, offset, length, position);
        this.position = position + bytes;
        return bytes;
    }
    read(buf, offset = 0, length = buf.byteLength, position) {
        if (typeof position !== 'number')
            position = this.position;
        const bytes = this.node.read(buf, offset, length, position);
        this.position = position + bytes;
        return bytes;
    }
    chmod(perm) {
        this.node.chmod(perm);
    }
    chown(uid, gid) {
        this.node.chown(uid, gid);
    }
}
exports.File = File;
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