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Code Issues Packages 1 Wiki Activity

adjust docs for Deno.seek (#4610)

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dubiousjim 2020-04-03 13:45:44 -04:00 committed by GitHub
parent c0cb198114
commit c5c3abc517
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2 changed files with 6 additions and 3 deletions
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5
cli/js/lib.deno.ns.d.ts vendored
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@ -703,7 +703,8 @@ declare namespace Deno {
export function write(rid: number, data: Uint8Array): Promise<number>;
/** Synchronously seek a resource ID (`rid`) to the given `offset` under mode
* given by `whence`. The current position within the resource is returned.
* given by `whence`. The new position within the resource (bytes from the
* start) is returned.
*
* const file = Deno.openSync('hello.txt', {read: true, write: true, truncate: true, create: true});
* Deno.writeSync(file.rid, new TextEncoder().encode("Hello world"));
@ -731,7 +732,7 @@ declare namespace Deno {
): number;
/** Seek a resource ID (`rid`) to the given `offset` under mode given by `whence`.
* The call resolves to the current position within the resource.
* The call resolves to the new position within the resource (bytes from the start).
*
* const file = await Deno.open('hello.txt', {read: true, write: true, truncate: true, create: true});
* await Deno.write(file.rid, new TextEncoder().encode("Hello world"));

4
cli/ops/fs.rs
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@ -226,12 +226,14 @@ fn op_seek(
};
let mut file = futures::executor::block_on(tokio_file.try_clone())?;
let is_sync = args.promise_id.is_none();
let fut = async move {
debug!("op_seek {} {} {}", rid, offset, whence);
let pos = file.seek(seek_from).await?;
Ok(json!(pos))
};
if args.promise_id.is_none() {
if is_sync {
let buf = futures::executor::block_on(fut)?;
Ok(JsonOp::Sync(buf))
} else {