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Optimize left/right trimming
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parent
c3c94ea889
commit
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36
fzf
36
fzf
@ -207,15 +207,35 @@ def ctrl char
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end
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if RUBY_VERSION.split('.').map { |e| e.rjust(3, '0') }.join > '001009'
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@wrx = Regexp.new '\p{Han}|\p{Katakana}|\p{Hiragana}|\p{Hangul}'
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def width str
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@urx ||= Regexp.new '\p{Han}|\p{Katakana}|\p{Hiragana}|\p{Hangul}'
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str.gsub(@urx, ' ').length
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str.gsub(@wrx, ' ').length
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end
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def trim str, len, left
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width = width str
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diff = 0
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while width > len
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width -= (left ? str[0, 1] : str[-1, 1]) =~ @wrx ? 2 : 1
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str = left ? str[1..-1] : str[0...-1]
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diff += 1
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end
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[str, diff]
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end
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else
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def width str
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str.length
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end
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def trim str, len, left
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diff = str.length - len
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if diff > 0
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[left ? str[diff..-1] : str[0...-diff], diff]
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else
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[str, 0]
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end
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end
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class String
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def ord
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self.unpack('c').first
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@ -440,19 +460,15 @@ searcher = Thread.new {
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ewidth = width(line[0...e])
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# Stri..
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if ewidth <= maxc - 2
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line = line[0...-1] while width(line) > maxc - 2
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line, _ = trim line, maxc - 2, false
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line << '..'
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# ..ring
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else
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# ..ri..
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line = line[0...e] + '..' if ewidth < width(line) - 2
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while width(line) > maxc - 2
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b -= 1
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e -= 1
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line = line[1..-1]
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end
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b += 2
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e += 2
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line, diff = trim line, maxc - 2, true
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b += 2 - diff
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e += 2 - diff
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b = [2, b].max
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line = '..' + line
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end
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