Extend custom_tags_parser functionality

[SerhiyRomanov]

What have been already implementing:

• Changed the priority of calling the custom_tags_parser
• Added the ability to control whether should 'main' parser go to the next line or not after custom_tags_parser has finished
• The Segment class has been extended for storing custom values

#EXTM3U
#EXTINF: -1 timeshift="0" catchup-days="1" catchup-type="flussonic-ts" tvg-id="ethno-channel"  group-title="Ukraine" tvg-logo="http://iptv.domain/icon/7331.png",Етно HD
#EXTVLCOPT:video-filter=invert:croppadd{croptop=50,cropbottom=50}
#EXTGRP:MaybeUkraine
#EXTVLCOPT:param2=value2
http://str00.iptv.domain/7331/mpegts?token=longtokenhere

Example of new custom_tags_parser function, which allow parsing the playlist above

def parse_iptv_attributes(line, lineno, data, state):
    # Customize parsing #EXTINF
    if line.startswith(protocol.extinf):
        chunks = line.replace(protocol.extinf + ':', '').split(',', 1)
        if len(chunks) == 2:
            duration_and_props, title = chunks
        elif len(chunks) == 1:
            duration_and_props = chunks[0]
            title = ''

        additional_props = OrderedDict()
        chunks = duration_and_props.strip().split(' ', 1)
        if len(chunks) == 2:
            duration, raw_props = chunks
            matched_props = re.finditer(r'([\w\-]+)="([^"]*)"', raw_props)
            for match in matched_props:
                additional_props[match.group(1)] = match.group(2)
        else:
            duration = duration_and_props

        if 'segment' not in state:
            state['segment'] = {}
        state['segment']['duration'] = float(duration)
        state['segment']['title'] = title

        save_segment_custom_value(state, 'extinf_props', additional_props)

        state['expect_segment'] = True
        return True

    # Parse #EXTGRP
    if line.startswith('#EXTGRP'):
        _, value = _parse_simple_parameter_raw_value(line, str)
        save_segment_custom_value(state, 'extgrp', value)
        state['expect_segment'] = True
        return True

    # Parse #EXTVLCOPT
    if line.startswith('#EXTVLCOPT'):
        _, value = _parse_simple_parameter_raw_value(line, str)

        existing_opts = get_segment_custom_value(state, 'vlcopt', [])
        existing_opts.append(value)
        save_segment_custom_value(state, 'vlcopt', existing_opts)

        state['expect_segment'] = True
        return True

[SerhiyRomanov]

This PR is ready for review and merging.

Please, highlight in release notes, that there is a breaking change:
custom_tags_parser function now receives 4 arguments
def custom_tags_parser_function(line, lineno, data, state):

[SerhiyRomanov]

@leandromoreira @mauricioabreu
Any chance to get this merged?

[leandromoreira]

@SerhiyRomanov sorry for delay I'll try to read all the PR :) thanks again, you're always helping a lot.

[leandromoreira]

that's wonderful @SerhiyRomanov I'll try to reach @mauricioabreu so we can seep up your work to be released as soon as possible.

[leandromoreira]

This PR is ready for review and merging.

Please, highlight in release notes, that there is a breaking change: custom_tags_parser function now receives 4 arguments def custom_tags_parser_function(line, lineno, data, state):

I think, next relase we may need to bump up major version @mauricioabreu , @SerhiyRomanov do you agree?

[leandromoreira]

@SerhiyRomanov there's still conflicts can you resolve them?

[SerhiyRomanov]

@leandromoreira I've resolved conflicts, so it can be merged. Let me know if I can help more with that library.

[leandromoreira]

@leandromoreira I've resolved conflicts, so it can be merged. Let me know if I can help more with that library.

thanks a lot, @mauricioabreu and I are planning to release a new version before your changes and a new major after merging your work.

[mauricioabreu]

@SerhiyRomanov good job! I want to merge this but there are some tests failing. Can you check it? Are those tests failing for you too?

[SerhiyRomanov]

@mauricioabreu I fixed the tests, could you run the test suite one more time?

[mauricioabreu]

Thank you @SerhiyRomanov