Aegisub/automation/include/karaoke.rb

69 lines
1.9 KiB
Ruby

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