Class: AnsiTerm::String

Inherits:
Object
  • Object
show all
Defined in:
lib/ansiterm/string.rb

Instance Method Summary collapse

Constructor Details

#initialize(str = nil) ⇒ String

Returns a new instance of String.



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# File 'lib/ansiterm/string.rb', line 5

def initialize(str=nil)
  if str
    parse(str)
  else
    @str = ""
    @attrs = []
  end
end

Instance Method Details

#<<(str) ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 120

def << str
  return self if str.nil?
  if !str.kind_of?(self.class)
    parse(self.to_str + "\e[0m" + str.to_str)
    return self
  end

  s,a = str.raw
  @str.concat(s)
  @attrs.concat(a)
  self
end

#[](i) ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 101

def[] i
  str = @str[i]
  if str
    a = self.class.new
    a.set(str,@attrs[i])
    a
  else
    nil
  end
end

#[]=(range, str) ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 91

def[]= range, str
  s = @str.dup
  a = @attrs.dup
  parse(str)
  s[range] = @str
  @str = s
  a[range] = @attrs
  @attrs = a
end

#attr_at(index) ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 116

def attr_at(index)
  @attrs[index]
end

#char_at(index) ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 112

def char_at(index)
  @str[index]
end

#encoding ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 36

def encoding
  @str.encoding
end

#index(str, off = 0) ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 44

def index str, off = 0
  @str.index(str,off)
end

#length ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 40

def length
  @str.length
end

#merge_attr_below(range, attr) ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 75

def merge_attr_below(range, attr)
  min = [0,range.first - 1].max
  fattr = @attrs[min]
  r = Array(@attrs[range]).count # Inefficient, but saves dealing with negative offsets etc. "manually"
  last = nil
  @attrs[range] = @attrs[range].map do |a|
    if a.bgcol == 49
      n = attr.merge(a, ignore: :bgcol)
    else
     n = attr.merge(a)
    end
     last == n ? last : n
  end
  #fattr #@attrs[min+r].merge(fattr)
end

#raw ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 52

def raw
  return @str, Array(@attrs)
end

#set(str, attrs) ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 48

def set(str,attrs)
  @str, @attrs = str,Array(attrs)
end

#set_attr(range, attr) ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 56

def set_attr(range, attr)
  min   = [range.first - 1,0].max
  fattr = @attrs[min]
  #attr  = fattr.merge(attr)
  r = Array(@attrs[range]).count # Inefficient, but saves dealing with negative offsets etc. "manually"
  last = nil
  @attrs[range] = @attrs[range]&.map do |a|
    n = a ? a.merge(attr) : attr
    last == n ? last : n
  end || []
  rm = range.last+1
  if a = @attrs[rm]
    @attrs[rm] = Attr.new.merge(fattr).merge(a)
    if !a.bgcol
      @attrs[rm] = @attrs[rm].merge({bgcol: 49})
    end
  end
end

#to_plain_str ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 14

def to_plain_str
  @str.dup
end

#to_s ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 32

def to_s
  to_str
end

#to_str ⇒ Object 



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# File 'lib/ansiterm/string.rb', line 18

def to_str
  out = ""
  a = Attr.new
  @str.length.times.each do |i|
    if a != @attrs[i]
      old = a
      a = @attrs[i]||Attr.new
      out << old.transition_to(a)
    end
    out << @str[i]
  end
  out
end