mirror of https://github.com/odrling/Aegisub
69 lines
1.9 KiB
Ruby
69 lines
1.9 KiB
Ruby
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module Aegisub
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# parsing karaoke line
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# should work more or less like the lua version
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# input: dialogue line with karaoke tags
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# output: number of syllables in karaoke
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def parse_karaoke(line)
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return 0 if line[:class] != :dialogue
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return line[:karaoke].size if line[:karaoke].class == Array
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karaoke = []
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time = 0
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line[:text].scan(/(?:{.*?\\(K|k[fto]?)(\d+).*?}([^{]*))|({.*?})([^{]*)/) do |k|
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if $1 # karaoke tag
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ktag = $1
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kdur = $2.to_i
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syl = Hash.new
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syl[:start_time] = time
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if ktag == 'kt'
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time = kdur*10
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syl[:duration] = 0
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else
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time += kdur*10
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syl[:duration] = kdur
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end
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syl[:end_time] = time
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syl[:tag] = ktag
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syl[:text] = $&
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syl[:text_stripped] = $3
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karaoke << syl
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else # no karaoke - append to the last syllable
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tag = $4
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text = $5
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if not karaoke.empty?
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karaoke.last[:text] << tag << text
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karaoke.last[:text_stripped] << text if text and tag !~ /\\p\d/ # no drawings
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end
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end
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end
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line[:karaoke] = karaoke
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return karaoke.size
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end
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# replaces matched pattern in the line with an evaluated template
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# input: line, template (string), strip (bool), pattern (regexp or string)
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# output: line with karaoke effect
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def k_replace(line, template, strip, pattern = /\\(:?K|k[fo]?\d+)/) # default pattern = any karaoke tag
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return if parse_karaoke(line) == 0
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res = ""
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t = template.gsub(/\$(start|end|dur|mid|text|i|kind)/, '_\1')
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_i = 0
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line[:karaoke].each do |s|
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_start = s[:start_time]
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_end = s[:end_time]
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_dur = s[:duration]
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_mid = _start + _dur*5
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_text = s[:text_stripped]
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_kind = s[:tag]
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ev = t.gsub(/(_(:?start|end|dur|mid|text|i|kind))/) { |m| eval($1).to_s } # evalute variables
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ev.gsub!(/\%([^%]+)\%/) { |m| eval($1).to_s } # evaluate expressions
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res << (strip ? "{" << ev << "}" << s[:text_stripped] : s[:text].gsub!(pattern, ev) )
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_i += 1
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end
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line[:text] = res
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end
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end
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