Class: Test::Unit::Diff::UTF8Line

Constant Summary collapse

WIDE_CHARACTERS =

from http://unicode.org/reports/tr11/

[0x1100..0x1159, 0x115F..0x115F, 0x2329..0x232A,
 0x2E80..0x2E99, 0x2E9B..0x2EF3, 0x2F00..0x2FD5,
 0x2FF0..0x2FFB, 0x3000..0x303E, 0x3041..0x3096,
 0x3099..0x30FF, 0x3105..0x312D, 0x3131..0x318E,
 0x3190..0x31B7, 0x31C0..0x31E3, 0x31F0..0x321E,
 0x3220..0x3243, 0x3250..0x32FE, 0x3300..0x4DB5,
 0x4E00..0x9FC3, 0xA000..0xA48C, 0xA490..0xA4C6,
 0xAC00..0xD7A3, 0xF900..0xFA2D, 0xFA30..0xFA6A,
 0xFA70..0xFAD9, 0xFE10..0xFE19, 0xFE30..0xFE52,
 0xFE54..0xFE66, 0xFE68..0xFE6B, 0xFF01..0xFF60,
 0xFFE0..0xFFE6, 0x20000..0x2FFFD, 0x30000..0x3FFFD,
]

AMBIGUOUS =

[0x00A1..0x00A1, 0x00A4..0x00A4, 0x00A7..0x00A8,
 0x00AA..0x00AA, 0x00AD..0x00AE, 0x00B0..0x00B4,
 0x00B6..0x00BA, 0x00BC..0x00BF, 0x00C6..0x00C6,
 0x00D0..0x00D0, 0x00D7..0x00D8, 0x00DE..0x00E1,
 0x00E6..0x00E6, 0x00E8..0x00EA, 0x00EC..0x00ED,
 0x00F0..0x00F0, 0x00F2..0x00F3, 0x00F7..0x00FA,
 0x00FC..0x00FC, 0x00FE..0x00FE, 0x0101..0x0101,
 0x0111..0x0111, 0x0113..0x0113, 0x011B..0x011B,
 0x0126..0x0127, 0x012B..0x012B, 0x0131..0x0133,
 0x0138..0x0138, 0x013F..0x0142, 0x0144..0x0144,
 0x0148..0x014B, 0x014D..0x014D, 0x0152..0x0153,
 0x0166..0x0167, 0x016B..0x016B, 0x01CE..0x01CE,
 0x01D0..0x01D0, 0x01D2..0x01D2, 0x01D4..0x01D4,
 0x01D6..0x01D6, 0x01D8..0x01D8, 0x01DA..0x01DA,
 0x01DC..0x01DC, 0x0251..0x0251, 0x0261..0x0261,
 0x02C4..0x02C4, 0x02C7..0x02C7, 0x02C9..0x02CB,
 0x02CD..0x02CD, 0x02D0..0x02D0, 0x02D8..0x02DB,
 0x02DD..0x02DD, 0x02DF..0x02DF, 0x0300..0x036F,
 0x0391..0x03A1, 0x03A3..0x03A9, 0x03B1..0x03C1,
 0x03C3..0x03C9, 0x0401..0x0401, 0x0410..0x044F,
 0x0451..0x0451, 0x2010..0x2010, 0x2013..0x2016,
 0x2018..0x2019, 0x201C..0x201D, 0x2020..0x2022,
 0x2024..0x2027, 0x2030..0x2030, 0x2032..0x2033,
 0x2035..0x2035, 0x203B..0x203B, 0x203E..0x203E,
 0x2074..0x2074, 0x207F..0x207F, 0x2081..0x2084,
 0x20AC..0x20AC, 0x2103..0x2103, 0x2105..0x2105,
 0x2109..0x2109, 0x2113..0x2113, 0x2116..0x2116,
 0x2121..0x2122, 0x2126..0x2126, 0x212B..0x212B,
 0x2153..0x2154, 0x215B..0x215E, 0x2160..0x216B,
 0x2170..0x2179, 0x2190..0x2199, 0x21B8..0x21B9,
 0x21D2..0x21D2, 0x21D4..0x21D4, 0x21E7..0x21E7,
 0x2200..0x2200, 0x2202..0x2203, 0x2207..0x2208,
 0x220B..0x220B, 0x220F..0x220F, 0x2211..0x2211,
 0x2215..0x2215, 0x221A..0x221A, 0x221D..0x2220,
 0x2223..0x2223, 0x2225..0x2225, 0x2227..0x222C,
 0x222E..0x222E, 0x2234..0x2237, 0x223C..0x223D,
 0x2248..0x2248, 0x224C..0x224C, 0x2252..0x2252,
 0x2260..0x2261, 0x2264..0x2267, 0x226A..0x226B,
 0x226E..0x226F, 0x2282..0x2283, 0x2286..0x2287,
 0x2295..0x2295, 0x2299..0x2299, 0x22A5..0x22A5,
 0x22BF..0x22BF, 0x2312..0x2312, 0x2460..0x24E9,
 0x24EB..0x254B, 0x2550..0x2573, 0x2580..0x258F,
 0x2592..0x2595, 0x25A0..0x25A1, 0x25A3..0x25A9,
 0x25B2..0x25B3, 0x25B6..0x25B7, 0x25BC..0x25BD,
 0x25C0..0x25C1, 0x25C6..0x25C8, 0x25CB..0x25CB,
 0x25CE..0x25D1, 0x25E2..0x25E5, 0x25EF..0x25EF,
 0x2605..0x2606, 0x2609..0x2609, 0x260E..0x260F,
 0x2614..0x2615, 0x261C..0x261C, 0x261E..0x261E,
 0x2640..0x2640, 0x2642..0x2642, 0x2660..0x2661,
 0x2663..0x2665, 0x2667..0x266A, 0x266C..0x266D,
 0x266F..0x266F, 0x273D..0x273D, 0x2776..0x277F,
 0xE000..0xF8FF, 0xFE00..0xFE0F, 0xFFFD..0xFFFD,
 0xE0100..0xE01EF, 0xF0000..0xFFFFD, 0x100000..0x10FFFD,
]

Class Method Summary collapse

• .wide_character?(character) ⇒ Boolean

Instance Method Summary collapse

• #[](*args) ⇒ Object
• #compute_width(start, _end) ⇒ Object
• #each(&block) ⇒ Object
• #initialize(line) ⇒ UTF8Line constructor

  A new instance of UTF8Line.

• #size ⇒ Object
• #to_s ⇒ Object

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# File 'lib/test/unit/diff.rb', line 374

def initialize(line)
  @line = line
  @characters = @line.unpack("U*")
end

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# File 'lib/test/unit/diff.rb', line 349

def wide_character?(character)
  binary_search_ranges(character, WIDE_CHARACTERS) or
    binary_search_ranges(character, AMBIGUOUS)
end

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# File 'lib/test/unit/diff.rb', line 379

def [](*args)
  result = @characters[*args]
  if result.respond_to?(:pack)
    result.pack("U*")
  else
    result
  end
end

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# File 'lib/test/unit/diff.rb', line 400

def compute_width(start, _end)
  width = 0
  start.upto(_end - 1) do |i|
    if self.class.wide_character?(@characters[i])
      width += 2
    else
      width += 1
    end
  end
  width
end

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# File 'lib/test/unit/diff.rb', line 388

def each(&block)
  @characters.each(&block)
end

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# File 'lib/test/unit/diff.rb', line 392

def size
  @characters.size
end

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# File 'lib/test/unit/diff.rb', line 396

def to_s
  @line
end