56 lines
1.4 KiB
Rust
56 lines
1.4 KiB
Rust
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use std::{
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error::Error,
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io::{self, prelude::*}
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};
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use clap::{App, AppSettings, ArgMatches, SubCommand};
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use futures::{
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Async,
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stream::poll_fn
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};
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use webmetro::{
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stream_parser::StreamEbml,
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webm::{
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SimpleBlock,
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WebmElement::*
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}
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};
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pub fn options() -> App<'static, 'static> {
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SubCommand::with_name("dump")
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.setting(AppSettings::Hidden)
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.about("Dumps WebM parsing events from parsing stdin")
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}
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pub fn run(_args: &ArgMatches) -> Result<(), Box<Error>> {
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let stdin = io::stdin();
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let mut buf_reader = stdin.lock();
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let mut read_bytes = 0;
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let mut events = poll_fn(|| {
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buf_reader.consume(read_bytes);
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buf_reader.fill_buf().map(|slice| {
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read_bytes = slice.len();
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if read_bytes > 0 {
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Async::Ready(Some(Into::<Vec<u8>>::into(slice)))
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} else {
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Async::Ready(None)
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}
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})
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}).parse_ebml();
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// stdin is sync so Async::NotReady will never happen
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while let Ok(Async::Ready(Some(element))) = events.poll_event() {
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match element {
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// suppress printing byte arrays
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Tracks(slice) => println!("Tracks[{}]", slice.len()),
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SimpleBlock(SimpleBlock {timecode, ..}) => println!("SimpleBlock@{}", timecode),
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other => println!("{:?}", other)
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}
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}
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Ok(())
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}
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