77 lines
2.3 KiB
Python
77 lines
2.3 KiB
Python
"""
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Video Tag
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---------
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This implements a Liquid-style video tag for Pelican,
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based on the octopress video tag [1]_
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Syntax
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------
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{% video url/to/video [width height] [url/to/poster] %}
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Example
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-------
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{% video http://site.com/video.mp4 100% 480 http://site.com/poster-frame.jpg %}
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Output
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------
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<span class="videobox">
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<video width='100%' height='480' preload='none' controls poster='http://site.com/poster-frame.jpg'>
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<source src='http://site.com/video.mp4' type='video/mp4; codecs=\"avc1.42E01E, mp4a.40.2\"'/>
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</video>
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</span>
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[1] https://github.com/imathis/octopress/blob/master/plugins/video_tag.rb
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"""
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import os
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import re
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from .mdx_liquid_tags import LiquidTags
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SYNTAX = "{% video url/to/video [url/to/video] [url/to/video] [width height] [url/to/poster] %}"
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VIDEO = re.compile(r'(/\S+|https?:\S+)(\s+(/\S+|https?:\S+))?(\s+(/\S+|https?:\S+))?(\s+(\d+\%?)\s(\d+\%?))?(\s+(/\S+|https?:\S+))?')
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VID_TYPEDICT = {'.mp4':"type='video/mp4; codecs=\"avc1.42E01E, mp4a.40.2\"'",
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'.ogv':"type='video/ogg; codecs=theora, vorbis'",
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'.webm':"type='video/webm; codecs=vp8, vorbis'"}
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@LiquidTags.register('video')
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def video(preprocessor, tag, markup):
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videos = []
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width = None
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height = None
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poster = None
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match = VIDEO.search(markup)
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if match:
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groups = match.groups()
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videos = [g for g in groups[0:6:2] if g]
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width = groups[6]
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height = groups[7]
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poster = groups[9]
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if any(videos):
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video_out = """
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<span class="videobox">
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<video width="{width}" height="{height}" preload="none" controls poster="{poster}">
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""".format(width=width, height=height, poster=poster).strip()
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for vid in videos:
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base, ext = os.path.splitext(vid)
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if ext not in VID_TYPEDICT:
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raise ValueError("Unrecognized video extension: "
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"{0}".format(ext))
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video_out += ("<source src='{0}' "
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"{1}>".format(vid, VID_TYPEDICT[ext]))
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video_out += "</video></span>"
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else:
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raise ValueError("Error processing input, "
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"expected syntax: {0}".format(SYNTAX))
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return video_out
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#----------------------------------------------------------------------
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# This import allows video tag to be a Pelican plugin
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from liquid_tags import register
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