com.iheartradio.m3u8.M3uParser Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of open-m3u8 Show documentation

An open source M3U8 playlist parser java library.

There is a newer version: 0.2.6

package com.iheartradio.m3u8;

import java.io.IOException;
import java.io.InputStream;

import com.iheartradio.m3u8.data.MediaPlaylist;
import com.iheartradio.m3u8.data.Playlist;

class M3uParser extends BaseM3uParser {
    M3uParser(InputStream inputStream, Encoding encoding) {
        super(inputStream, encoding);
    }

    @Override
    public Playlist parse() throws IOException, ParseException, PlaylistException {
        validateAvailable();

        final ParseState state = new ParseState(mEncoding);
        final TrackLineParser trackLineParser = new TrackLineParser();

        try {
            state.setMedia();

            while (mScanner.hasNext()) {
                final String line = mScanner.next();
                validateLine(line);

                if (line.length() == 0 || isComment(line)) {
                    continue;
                } else {
                    trackLineParser.parse(line, state);
                }
            }

            Playlist playlist = new Playlist.Builder()
                    .withMediaPlaylist(new MediaPlaylist.Builder()
                            .withTracks(state.getMedia().tracks)
                            .build())
                    .build();

            PlaylistValidation validation = PlaylistValidation.from(playlist);

            if (validation.isValid()) {
                return playlist;
            } else {
                throw new PlaylistException(mScanner.getInput(), validation.getErrors());
            }
        } catch (ParseException exception) {
            exception.setInput(mScanner.getInput());
            throw exception;
        }
    }

    private void validateLine(final String line) throws ParseException {
        if (!isComment(line)) {
            if (line.length() != line.trim().length()) {
                throw ParseException.create(ParseExceptionType.WHITESPACE_IN_TRACK, line, "" + line.length());
            }
        }
    }

    private boolean isComment(final String line) {
        return line.indexOf(Constants.COMMENT_PREFIX) == 0;
    }
}