mirror of
https://github.com/xuxiaobo-bobo/boda_jsEnv.git
synced 2025-04-20 03:19:56 +08:00
57 lines
2.1 KiB
JavaScript
57 lines
2.1 KiB
JavaScript
"use strict";
|
|
var __importDefault = (this && this.__importDefault) || function (mod) {
|
|
return (mod && mod.__esModule) ? mod : { "default": mod };
|
|
};
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.file = void 0;
|
|
const debug_1 = __importDefault(require("debug"));
|
|
const fs_1 = require("fs");
|
|
const fs_extra_1 = require("fs-extra");
|
|
const notfound_1 = __importDefault(require("./notfound"));
|
|
const notmodified_1 = __importDefault(require("./notmodified"));
|
|
const url_1 = require("url");
|
|
const debug = (0, debug_1.default)('get-uri:file');
|
|
/**
|
|
* Returns a `fs.ReadStream` instance from a "file:" URI.
|
|
*/
|
|
const file = async ({ href: uri }, opts = {}) => {
|
|
const { cache, flags = 'r', mode = 438, // =0666
|
|
} = opts;
|
|
try {
|
|
// Convert URI → Path
|
|
const filepath = (0, url_1.fileURLToPath)(uri);
|
|
debug('Normalized pathname: %o', filepath);
|
|
// `open()` first to get a file descriptor and ensure that the file
|
|
// exists.
|
|
const fd = await (0, fs_extra_1.open)(filepath, flags, mode);
|
|
// Now `fstat()` to check the `mtime` and store the stat object for
|
|
// the cache.
|
|
const stat = await (0, fs_extra_1.fstat)(fd);
|
|
// if a `cache` was provided, check if the file has not been modified
|
|
if (cache && cache.stat && stat && isNotModified(cache.stat, stat)) {
|
|
throw new notmodified_1.default();
|
|
}
|
|
// `fs.ReadStream` takes care of calling `fs.close()` on the
|
|
// fd after it's done reading
|
|
// @ts-expect-error `@types/node` doesn't allow `null` as file path :/
|
|
const rs = (0, fs_1.createReadStream)(null, {
|
|
autoClose: true,
|
|
...opts,
|
|
fd,
|
|
});
|
|
rs.stat = stat;
|
|
return rs;
|
|
}
|
|
catch (err) {
|
|
if (err.code === 'ENOENT') {
|
|
throw new notfound_1.default();
|
|
}
|
|
throw err;
|
|
}
|
|
};
|
|
exports.file = file;
|
|
// returns `true` if the `mtime` of the 2 stat objects are equal
|
|
function isNotModified(prev, curr) {
|
|
return +prev.mtime === +curr.mtime;
|
|
}
|
|
//# sourceMappingURL=file.js.map
|