本文整理汇总了TypeScript中fs.createReadStream函数的典型用法代码示例。如果您正苦于以下问题：TypeScript createReadStream函数的具体用法？TypeScript createReadStream怎么用？TypeScript createReadStream使用的例子？那么, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了createReadStream函数的10个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: once
const promise = new TPromise<string>((c, e) => {
const input = fs.createReadStream(path);
const hash = crypto.createHash('sha1');
const hashStream = hash as any as stream.PassThrough;
input.pipe(hashStream);
const done = once((err?: Error, result?: string) => {
input.removeAllListeners();
hashStream.removeAllListeners();
if (err) {
e(err);
} else {
c(result);
}
});
input.once('error', done);
input.once('end', done);
hashStream.once('error', done);
hashStream.once('data', (data: NodeBuffer) => done(null, data.toString('hex')));
});示例2: getRenderedSourceCode
server = http.createServer(async (request, response) => {
if (request.url) {
if (request.url === "/") {
response.setHeader("Content-Type", "text/html");
response.end(await getRenderedSourceCode());
} else {
try {
let filePath: string = commandArgs.fsPath.replace(/\\/g, "/");
let lastSlashPosition = filePath.lastIndexOf('/');
let basePath = filePath.substr(0, lastSlashPosition);
filePath = `${basePath}${request.url}`;
let cb = fs.statSync(filePath).size;
response.setHeader("Content-Type", `image/${request.url.substr(request.url.lastIndexOf('.'))}`);
response.setHeader("Content-Length", cb);
fs.createReadStream(filePath).pipe(response);
} catch {
//fail
response.end();
}
}
}
});示例3: if
node.redirs.forEach(function (redir) {
const direction = redir.direction.type.toString();
const target = redir.target;
var fd = redir.direction.number;
if (direction === 'LT') {
if (!utils.isNumber(fd)) {
fd = 0;
}
cmdStreams[fd] = fs.createReadStream(target.text);
} else if (direction === 'GT') {
if (!utils.isNumber(fd)) {
fd = 1;
}
cmdStreams[fd] = fs.createWriteStream(target.text); // truncates
} else if (direction === 'GTGT') {
if (!utils.isNumber(fd)) {
fd = 1;
}
cmdStreams[fd] = fs.createWriteStream(target.text, {flags: 'a'});
} else if (direction === 'LTGT') {
if (!utils.isNumber(fd)) {
fd = 0;
}
cmdStreams[fd] = fs.createWriteStream(target.text, {flags: 'a'});
} else if (direction === 'GTAMP') {
// TODO THIS DOESN'T REALLY WORK RIGHT NOW, FD VALUE IS PASSED DIRECTLY TO SPAWN SO IT REFERS TO PARENT'S FD. SAME GOES FOR LTAMP
if (!utils.isNumber(fd)) {
fd = 1;
}
cmdStreams[fd] = cmdStreams[Number(target.text)];
} else if (direction === 'LTAMP') {
if (!utils.isNumber(fd)) {
fd = 0;
}
cmdStreams[fd] = cmdStreams[Number(target.text)];
}
// TODO MUST DETECT DUPLICATE FDs AND OPEN DUPLEX STREAM FOR THEM (e.g., "somecommand 7>thefile 7<thefile")
});示例4: decodeURI
(request, callback) => {
const urlPath = url.parse(request.url).pathname;
const decodedPath = decodeURI(urlPath);
const rootlessPath = decodedPath.replace(/^\//, "");
const filePath = join(fileRoot, rootlessPath);
try {
var stats = statSync(filePath);
var stream = createReadStream(filePath);
callback({
headers: {
server: "itch",
"content-type": mime.lookup(filePath),
"content-length": stats.size,
"access-control-allow-origin": "*",
},
statusCode: 200,
data: stream as any, // *sigh*
});
} catch (e) {
logger.warn(`while serving ${request.url}, got ${e.stack}`);
let statusCode = 400;
switch (e.code) {
case "ENOENT":
statusCode = 404;
break;
case "EPERM":
statusCode = 401;
break;
}
callback({
headers: {},
statusCode,
data: null,
});
return;
}
},示例5: readExistingTweets
function readExistingTweets(outputFilepath: string,
callback: (error: Error, fetchedStatuses?: {[index: string]: number}) => void) {
let fetchedStatuses: {[index: string]: number} = {};
// quick exit if output is undefined
if (outputFilepath === undefined) return callback(null, fetchedStatuses);
logger.info(`Reading existing tweets from "${outputFilepath}"`);
let inputStream = createReadStream(outputFilepath, {flags: 'r', encoding: 'utf8'});
inputStream.pipe(new JSONParser())
.on('data', (status: Status) => {
fetchedStatuses[status.id_str] = 1;
})
.on('error', (error: Error) => {
callback(error);
})
.on('end', () => {
logger.info(`Found ${Object.keys(fetchedStatuses).length} tweets in "${outputFilepath}"`);
callback(null, fetchedStatuses);
});
}示例6: copyFile
export function copyFile(source, target, cb) {
var cbCalled = false;
var rd = fs.createReadStream(source);
rd.on('error', function(err) {
done(err);
});
var wr = fs.createWriteStream(target);
wr.on('error', function(err) {
done(err);
});
wr.on('close', function(ex) {
done();
});
rd.pipe(wr);
function done(err?) {
if (!cbCalled) {
cb(err);
cbCalled = true;
}
}
}示例7: streamFile
export function streamFile(filename: string, res: ServerResponse) {
if (!path.isAbsolute(filename)) {
throw new Error(`stream file expects an absolute path found ${filename}`);
}
let mimeType = mime.lookup(filename);
// res.writeHead(200, { "Content-Type": mimeType});
let readstream = fs.createReadStream(filename);
readstream.on("error", err => {
if ((err.code = "ENOENT")) {
// file not found
res.statusCode = 404;
res.end("Not Found");
} else {
console.error(err);
res.statusCode = 500;
res.end("Unknown Server Error");
}
});
res.statusCode = 200;
res.setHeader("Content-Type", mimeType);
readstream.pipe(res);
}示例8: Promise
return new Promise(resolve => {
const icons: Icon[] = [];
const codepointsPath = require.resolve(
'material-design-icons/iconfont/codepoints'
);
const rl = createInterface({
input: createReadStream(codepointsPath, 'utf8')
});
rl.on('line', (line: string) => {
const [id, unicode] = line.split(' ');
icons.push({
id,
unicode
});
});
rl.on('close', () => {
resolve({
icons
});
});
});示例9: copyFile
function copyFile(source: string | Buffer, target: string | Buffer, cb: (err?: string) => void) {
let cbCalled = false;
let rd = fs.createReadStream(source);
rd.on("error", function (err) {
done(err);
});
let wr = fs.createWriteStream(target);
wr.on("error", function (err) {
done(err);
});
wr.on("close", function (ex) {
done();
});
rd.pipe(wr);
function done(err?) {
if (!cbCalled) {
cb(err);
cbCalled = true;
}
}
}示例10: it
it("should include column", function (done) {
var rs = fs.createReadStream(__dirname + "/data/dataWithQoutes");
csv({
includeColumns: /TIMESTAMP/
})
.fromStream(rs)
.on("header", function (header) {
assert.equal(header.indexOf("TIMESTAMP"), 0);
assert.equal(header.indexOf("UPDATE"), -1);
assert.equal(header.length, 1);
})
.subscribe(function (j, idx) {
assert(idx >= 0);
if (idx === 1) {
assert.equal(j.TIMESTAMP, "abc, def, ccc");
}
assert(!j.UID)
assert(!j['BYTES SENT'])
})
.on("done", function () {
done();
});
});