diff options
Diffstat (limited to 'youtube_dl/utils.py')
| -rw-r--r-- | youtube_dl/utils.py | 120 |
1 files changed, 111 insertions, 9 deletions
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py index 79a337df4..91e235ff2 100644 --- a/youtube_dl/utils.py +++ b/youtube_dl/utils.py @@ -2511,27 +2511,97 @@ def srt_subtitles_timecode(seconds): def dfxp2srt(dfxp_data): + LEGACY_NAMESPACES = ( + ('http://www.w3.org/ns/ttml', [ + 'http://www.w3.org/2004/11/ttaf1', + 'http://www.w3.org/2006/04/ttaf1', + 'http://www.w3.org/2006/10/ttaf1', + ]), + ('http://www.w3.org/ns/ttml#styling', [ + 'http://www.w3.org/ns/ttml#style', + ]), + ) + + SUPPORTED_STYLING = [ + 'color', + 'fontFamily', + 'fontSize', + 'fontStyle', + 'fontWeight', + 'textDecoration' + ] + _x = functools.partial(xpath_with_ns, ns_map={ 'ttml': 'http://www.w3.org/ns/ttml', - 'ttaf1': 'http://www.w3.org/2006/10/ttaf1', - 'ttaf1_0604': 'http://www.w3.org/2006/04/ttaf1', + 'tts': 'http://www.w3.org/ns/ttml#styling', }) + styles = {} + default_style = {} + class TTMLPElementParser(object): - out = '' + _out = '' + _unclosed_elements = [] + _applied_styles = [] def start(self, tag, attrib): - if tag in (_x('ttml:br'), _x('ttaf1:br'), 'br'): - self.out += '\n' + if tag in (_x('ttml:br'), 'br'): + self._out += '\n' + else: + unclosed_elements = [] + style = {} + element_style_id = attrib.get('style') + if default_style: + style.update(default_style) + if element_style_id: + style.update(styles.get(element_style_id, {})) + for prop in SUPPORTED_STYLING: + prop_val = attrib.get(_x('tts:' + prop)) + if prop_val: + style[prop] = prop_val + if style: + font = '' + for k, v in sorted(style.items()): + if self._applied_styles and self._applied_styles[-1].get(k) == v: + continue + if k == 'color': + font += ' color="%s"' % v + elif k == 'fontSize': + font += ' size="%s"' % v + elif k == 'fontFamily': + font += ' face="%s"' % v + elif k == 'fontWeight' and v == 'bold': + self._out += '<b>' + unclosed_elements.append('b') + elif k == 'fontStyle' and v == 'italic': + self._out += '<i>' + unclosed_elements.append('i') + elif k == 'textDecoration' and v == 'underline': + self._out += '<u>' + unclosed_elements.append('u') + if font: + self._out += '<font' + font + '>' + unclosed_elements.append('font') + applied_style = {} + if self._applied_styles: + applied_style.update(self._applied_styles[-1]) + applied_style.update(style) + self._applied_styles.append(applied_style) + self._unclosed_elements.append(unclosed_elements) def end(self, tag): - pass + if tag not in (_x('ttml:br'), 'br'): + unclosed_elements = self._unclosed_elements.pop() + for element in reversed(unclosed_elements): + self._out += '</%s>' % element + if unclosed_elements and self._applied_styles: + self._applied_styles.pop() def data(self, data): - self.out += data + self._out += data def close(self): - return self.out.strip() + return self._out.strip() def parse_node(node): target = TTMLPElementParser() @@ -2539,13 +2609,45 @@ def dfxp2srt(dfxp_data): parser.feed(xml.etree.ElementTree.tostring(node)) return parser.close() + for k, v in LEGACY_NAMESPACES: + for ns in v: + dfxp_data = dfxp_data.replace(ns, k) + dfxp = compat_etree_fromstring(dfxp_data.encode('utf-8')) out = [] - paras = dfxp.findall(_x('.//ttml:p')) or dfxp.findall(_x('.//ttaf1:p')) or dfxp.findall(_x('.//ttaf1_0604:p')) or dfxp.findall('.//p') + paras = dfxp.findall(_x('.//ttml:p')) or dfxp.findall('.//p') if not paras: raise ValueError('Invalid dfxp/TTML subtitle') + repeat = False + while True: + for style in dfxp.findall(_x('.//ttml:style')): + style_id = style.get('id') + parent_style_id = style.get('style') + if parent_style_id: + if parent_style_id not in styles: + repeat = True + continue + styles[style_id] = styles[parent_style_id].copy() + for prop in SUPPORTED_STYLING: + prop_val = style.get(_x('tts:' + prop)) + if prop_val: + styles.setdefault(style_id, {})[prop] = prop_val + if repeat: + repeat = False + else: + break + + for p in ('body', 'div'): + ele = xpath_element(dfxp, [_x('.//ttml:' + p), './/' + p]) + if ele is None: + continue + style = styles.get(ele.get('style')) + if not style: + continue + default_style.update(style) + for para, index in zip(paras, itertools.count(1)): begin_time = parse_dfxp_time_expr(para.attrib.get('begin')) end_time = parse_dfxp_time_expr(para.attrib.get('end')) |