mirror of
https://github.com/yt-dlp/yt-dlp.git
synced 2025-11-03 16:15:14 +00:00
191 lines
6.0 KiB
Python
191 lines
6.0 KiB
Python
import io
|
||
import quopri
|
||
import re
|
||
import uuid
|
||
|
||
from .fragment import FragmentFD
|
||
from ..compat import imghdr
|
||
from ..utils import escapeHTML, formatSeconds, srt_subtitles_timecode, urljoin
|
||
from ..version import __version__ as YT_DLP_VERSION
|
||
|
||
|
||
class MhtmlFD(FragmentFD):
|
||
_STYLESHEET = """\
|
||
html, body {
|
||
margin: 0;
|
||
padding: 0;
|
||
height: 100vh;
|
||
}
|
||
|
||
html {
|
||
overflow-y: scroll;
|
||
scroll-snap-type: y mandatory;
|
||
}
|
||
|
||
body {
|
||
scroll-snap-type: y mandatory;
|
||
display: flex;
|
||
flex-flow: column;
|
||
}
|
||
|
||
body > figure {
|
||
max-width: 100vw;
|
||
max-height: 100vh;
|
||
scroll-snap-align: center;
|
||
}
|
||
|
||
body > figure > figcaption {
|
||
text-align: center;
|
||
height: 2.5em;
|
||
}
|
||
|
||
body > figure > img {
|
||
display: block;
|
||
margin: auto;
|
||
max-width: 100%;
|
||
max-height: calc(100vh - 5em);
|
||
}
|
||
"""
|
||
_STYLESHEET = re.sub(r'\s+', ' ', _STYLESHEET)
|
||
_STYLESHEET = re.sub(r'\B \B|(?<=[\w\-]) (?=[^\w\-])|(?<=[^\w\-]) (?=[\w\-])', '', _STYLESHEET)
|
||
|
||
@staticmethod
|
||
def _escape_mime(s):
|
||
return '=?utf-8?Q?' + (b''.join(
|
||
bytes((b,)) if b >= 0x20 else b'=%02X' % b
|
||
for b in quopri.encodestring(s.encode(), header=True)
|
||
)).decode('us-ascii') + '?='
|
||
|
||
def _gen_cid(self, i, fragment, frag_boundary):
|
||
return '%u.%s@yt-dlp.github.io.invalid' % (i, frag_boundary)
|
||
|
||
def _gen_stub(self, *, fragments, frag_boundary, title):
|
||
output = io.StringIO()
|
||
|
||
output.write((
|
||
'<!DOCTYPE html>'
|
||
'<html>'
|
||
'<head>'
|
||
'' '<meta name="generator" content="yt-dlp {version}">'
|
||
'' '<title>{title}</title>'
|
||
'' '<style>{styles}</style>'
|
||
'<body>'
|
||
).format(
|
||
version=escapeHTML(YT_DLP_VERSION),
|
||
styles=self._STYLESHEET,
|
||
title=escapeHTML(title)
|
||
))
|
||
|
||
t0 = 0
|
||
for i, frag in enumerate(fragments):
|
||
output.write('<figure>')
|
||
try:
|
||
t1 = t0 + frag['duration']
|
||
output.write((
|
||
'<figcaption>Slide #{num}: {t0} – {t1} (duration: {duration})</figcaption>'
|
||
).format(
|
||
num=i + 1,
|
||
t0=srt_subtitles_timecode(t0),
|
||
t1=srt_subtitles_timecode(t1),
|
||
duration=formatSeconds(frag['duration'], msec=True)
|
||
))
|
||
except (KeyError, ValueError, TypeError):
|
||
t1 = None
|
||
output.write((
|
||
'<figcaption>Slide #{num}</figcaption>'
|
||
).format(num=i + 1))
|
||
output.write('<img src="cid:{cid}">'.format(
|
||
cid=self._gen_cid(i, frag, frag_boundary)))
|
||
output.write('</figure>')
|
||
t0 = t1
|
||
|
||
return output.getvalue()
|
||
|
||
def real_download(self, filename, info_dict):
|
||
fragment_base_url = info_dict.get('fragment_base_url')
|
||
fragments = info_dict['fragments'][:1] if self.params.get(
|
||
'test', False) else info_dict['fragments']
|
||
title = info_dict.get('title', info_dict['format_id'])
|
||
origin = info_dict.get('webpage_url', info_dict['url'])
|
||
|
||
ctx = {
|
||
'filename': filename,
|
||
'total_frags': len(fragments),
|
||
}
|
||
|
||
self._prepare_and_start_frag_download(ctx, info_dict)
|
||
|
||
extra_state = ctx.setdefault('extra_state', {
|
||
'header_written': False,
|
||
'mime_boundary': str(uuid.uuid4()).replace('-', ''),
|
||
})
|
||
|
||
frag_boundary = extra_state['mime_boundary']
|
||
|
||
if not extra_state['header_written']:
|
||
stub = self._gen_stub(
|
||
fragments=fragments,
|
||
frag_boundary=frag_boundary,
|
||
title=title
|
||
)
|
||
|
||
ctx['dest_stream'].write((
|
||
'MIME-Version: 1.0\r\n'
|
||
'From: <nowhere@yt-dlp.github.io.invalid>\r\n'
|
||
'To: <nowhere@yt-dlp.github.io.invalid>\r\n'
|
||
'Subject: {title}\r\n'
|
||
'Content-type: multipart/related; '
|
||
'' 'boundary="{boundary}"; '
|
||
'' 'type="text/html"\r\n'
|
||
'X.yt-dlp.Origin: {origin}\r\n'
|
||
'\r\n'
|
||
'--{boundary}\r\n'
|
||
'Content-Type: text/html; charset=utf-8\r\n'
|
||
'Content-Length: {length}\r\n'
|
||
'\r\n'
|
||
'{stub}\r\n'
|
||
).format(
|
||
origin=origin,
|
||
boundary=frag_boundary,
|
||
length=len(stub),
|
||
title=self._escape_mime(title),
|
||
stub=stub
|
||
).encode())
|
||
extra_state['header_written'] = True
|
||
|
||
for i, fragment in enumerate(fragments):
|
||
if (i + 1) <= ctx['fragment_index']:
|
||
continue
|
||
|
||
fragment_url = fragment.get('url')
|
||
if not fragment_url:
|
||
assert fragment_base_url
|
||
fragment_url = urljoin(fragment_base_url, fragment['path'])
|
||
|
||
success = self._download_fragment(ctx, fragment_url, info_dict)
|
||
if not success:
|
||
continue
|
||
frag_content = self._read_fragment(ctx)
|
||
|
||
frag_header = io.BytesIO()
|
||
frag_header.write(
|
||
b'--%b\r\n' % frag_boundary.encode('us-ascii'))
|
||
frag_header.write(
|
||
b'Content-ID: <%b>\r\n' % self._gen_cid(i, fragment, frag_boundary).encode('us-ascii'))
|
||
frag_header.write(
|
||
b'Content-type: %b\r\n' % f'image/{imghdr.what(h=frag_content) or "jpeg"}'.encode())
|
||
frag_header.write(
|
||
b'Content-length: %u\r\n' % len(frag_content))
|
||
frag_header.write(
|
||
b'Content-location: %b\r\n' % fragment_url.encode('us-ascii'))
|
||
frag_header.write(
|
||
b'X.yt-dlp.Duration: %f\r\n' % fragment['duration'])
|
||
frag_header.write(b'\r\n')
|
||
self._append_fragment(
|
||
ctx, frag_header.getvalue() + frag_content + b'\r\n')
|
||
|
||
ctx['dest_stream'].write(
|
||
b'--%b--\r\n\r\n' % frag_boundary.encode('us-ascii'))
|
||
self._finish_frag_download(ctx, info_dict)
|
||
return True
|