mirror of https://github.com/jkjoy/sunpeiwen.git
57 lines
2.4 KiB
JavaScript
57 lines
2.4 KiB
JavaScript
"use strict";
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/* IMPORT */
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Object.defineProperty(exports, "__esModule", { value: true });
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const path = require("path");
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const consts_1 = require("../consts");
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const fs_1 = require("./fs");
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/* TEMP */
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//TODO: Maybe publish this as a standalone package
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const Temp = {
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store: {},
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create: (filePath) => {
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const randomness = `000000${Math.floor(Math.random() * 16777215).toString(16)}`.slice(-6), // 6 random-enough hex characters
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timestamp = Date.now().toString().slice(-10), // 10 precise timestamp digits
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prefix = 'tmp-', suffix = `.${prefix}${timestamp}${randomness}`, tempPath = `${filePath}${suffix}`;
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return tempPath;
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},
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get: (filePath, creator, purge = true) => {
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const tempPath = Temp.truncate(creator(filePath));
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if (tempPath in Temp.store)
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return Temp.get(filePath, creator, purge); // Collision found, try again
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Temp.store[tempPath] = purge;
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const disposer = () => delete Temp.store[tempPath];
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return [tempPath, disposer];
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},
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purge: (filePath) => {
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if (!Temp.store[filePath])
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return;
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delete Temp.store[filePath];
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fs_1.default.unlinkAttempt(filePath);
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},
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purgeSync: (filePath) => {
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if (!Temp.store[filePath])
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return;
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delete Temp.store[filePath];
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fs_1.default.unlinkSyncAttempt(filePath);
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},
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purgeSyncAll: () => {
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for (const filePath in Temp.store) {
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Temp.purgeSync(filePath);
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}
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},
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truncate: (filePath) => {
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const basename = path.basename(filePath);
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if (basename.length <= consts_1.LIMIT_BASENAME_LENGTH)
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return filePath; //FIXME: Rough and quick attempt at detecting ok lengths
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const truncable = /^(\.?)(.*?)((?:\.[^.]+)?(?:\.tmp-\d{10}[a-f0-9]{6})?)$/.exec(basename);
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if (!truncable)
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return filePath; //FIXME: No truncable part detected, can't really do much without also changing the parent path, which is unsafe, hoping for the best here
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const truncationLength = basename.length - consts_1.LIMIT_BASENAME_LENGTH;
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return `${filePath.slice(0, -basename.length)}${truncable[1]}${truncable[2].slice(0, -truncationLength)}${truncable[3]}`; //FIXME: The truncable part might be shorter than needed here
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}
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};
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/* INIT */
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process.on('exit', Temp.purgeSyncAll); // Ensuring purgeable temp files are purged on exit
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/* EXPORT */
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exports.default = Temp;
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