n8n/dist/modules/n8n-packages/io/unique-filename-allocator.js

n8n Workflow Automation Tool

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.UniqueFilenameAllocator = void 0;
const n8n_workflow_1 = require("n8n-workflow");
const slug_utils_1 = require("./slug.utils");
class UniqueFilenameAllocator {
    constructor(baseDir, fallback) {
        this.baseDir = baseDir;
        this.fallback = fallback;
        this.used = new Set();
    }
    reserve(segment) {
        this.used.add(`${this.baseDir}/${segment}`);
    }
    reservePath(path) {
        if (!path.startsWith(`${this.baseDir}/`)) {
            throw new n8n_workflow_1.UnexpectedError('Cannot reserve a path outside the allocator base directory', {
                extra: { path, baseDir: this.baseDir },
            });
        }
        this.used.add(path);
    }
    allocate(name) {
        const base = `${this.baseDir}/${(0, slug_utils_1.generateSlug)(name, this.fallback)}`;
        if (!this.used.has(base)) {
            this.used.add(base);
            return base;
        }
        for (let suffix = 2;; suffix++) {
            const candidate = `${base}-${suffix}`;
            if (!this.used.has(candidate)) {
                this.used.add(candidate);
                return candidate;
            }
        }
    }
}
exports.UniqueFilenameAllocator = UniqueFilenameAllocator;
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