Class: Ansi::To::Html
- Inherits:
-
Object
- Object
- Ansi::To::Html
- Defined in:
- lib/ansi/to/html.rb,
lib/ansi/to/html/version.rb
Constant Summary collapse
- ESCAPE =
"\x1b"
- STYLES =
Linux console palette
{ 'ef0' => 'color:#000', 'ef1' => 'color:#A00', 'ef2' => 'color:#0A0', 'ef3' => 'color:#A50', 'ef4' => 'color:#00A', 'ef5' => 'color:#A0A', 'ef6' => 'color:#0AA', 'ef7' => 'color:#AAA', 'ef8' => 'color:#555', 'ef9' => 'color:#F55', 'ef10' => 'color:#5F5', 'ef11' => 'color:#FF5', 'ef12' => 'color:#55F', 'ef13' => 'color:#F5F', 'ef14' => 'color:#5FF', 'ef15' => 'color:#FFF', 'eb0' => 'background-color:#000', 'eb1' => 'background-color:#A00', 'eb2' => 'background-color:#0A0', 'eb3' => 'background-color:#A50', 'eb4' => 'background-color:#00A', 'eb5' => 'background-color:#A0A', 'eb6' => 'background-color:#0AA', 'eb7' => 'background-color:#AAA', 'eb8' => 'background-color:#555', 'eb9' => 'background-color:#F55', 'eb10' => 'background-color:#5F5', 'eb11' => 'background-color:#FF5', 'eb12' => 'background-color:#55F', 'eb13' => 'background-color:#F5F', 'eb14' => 'background-color:#5FF', 'eb15' => 'background-color:#FFF', }
- VERSION =
"0.0.1"
Instance Method Summary collapse
- #each {|buf| ... } ⇒ Object
-
#initialize(input) ⇒ Html
constructor
A new instance of Html.
- #push_style(style) ⇒ Object
- #push_tag(tag, style = nil) ⇒ Object
-
#red ⇒ Object
The default xterm 256 colour palette.
- #reset_styles ⇒ Object
- #to_html ⇒ Object
- #tokenize(text) ⇒ Object
Constructor Details
#initialize(input) ⇒ Html
Returns a new instance of Html.
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# File 'lib/ansi/to/html.rb', line 75 def initialize(input) @input = if input.respond_to?(:to_str) [input] elsif !input.respond_to?(:each) raise ArgumentError, "input must respond to each" else input end @stack = [] end |
Instance Method Details
#each {|buf| ... } ⇒ Object
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# File 'lib/ansi/to/html.rb', line 93 def each buf = '' @input.each do |chunk| buf << chunk tokenize(buf) do |tok, data| case tok when :text yield data when :display case code = data when 0,39,49 ; yield reset_styles if @stack.any? # NOTE: 39/49 is reset for fg/bg color only when 1 ; yield push_tag("b") # bright when 2 ; #dim when 3, 4 ; yield push_tag("u") when 5, 6 ; yield push_tag("blink") when 7 ; #reverse when 8 ; yield push_style("display:none") when 9 ; yield push_tag("strike") when 30..37 ; yield push_style("ef#{code - 30}") when 40..47 ; yield push_style("eb#{code - 40}") when 90..97 ; yield push_style("ef#{8 + code - 90}") when 100..107 ; yield push_style("eb#{8 + code - 100}") end when :xterm256f code = data yield push_style("ef#{code}") when :xterm256b code = data yield push_style("eb#{code}") end end end yield buf if !buf.empty? yield reset_styles if @stack.any? self end |
#push_style(style) ⇒ Object
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# File 'lib/ansi/to/html.rb', line 139 def push_style(style) push_tag "span", style end |
#push_tag(tag, style = nil) ⇒ Object
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# File 'lib/ansi/to/html.rb', line 130 def push_tag(tag, style=nil) style = STYLES[style] if style && !style.include?(':') @stack.push tag [ "<#{tag}", (" style='#{style}'" if style), ">" ].join end |
#red ⇒ Object
The default xterm 256 colour palette
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# File 'lib/ansi/to/html.rb', line 55 (0..5).each do |red| (0..5).each do |green| (0..5).each do |blue| c = 16 + (red * 36) + (green * 6) + blue r = red > 0 ? red * 40 + 55 : 0 g = green > 0 ? green * 40 + 55 : 0 b = blue > 0 ? blue * 40 + 55 : 0 STYLES["ef#{c}"] = "color:#%2.2x%2.2x%2.2x" % [r, g, b] STYLES["eb#{c}"] = "background-color:#%2.2x%2.2x%2.2x" % [r, g, b] end end end |
#reset_styles ⇒ Object
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# File 'lib/ansi/to/html.rb', line 143 def reset_styles stack, @stack = @stack, [] stack.reverse.map { |tag| "</#{tag}>" }.join end |
#to_html ⇒ Object
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# File 'lib/ansi/to/html.rb', line 87 def to_html buf = [] each { |chunk| buf << chunk } buf.join end |
#tokenize(text) ⇒ Object
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# File 'lib/ansi/to/html.rb', line 148 def tokenize(text) tokens = [ # characters to remove completely [/\A\x08+/, lambda { |m| '' }], [/\A\x1b\[38;5;(\d+)m/, lambda { |m| yield :xterm256f, $1.to_i; '' } ], [/\A\x1b\[48;5;(\d+)m/, lambda { |m| yield :xterm256b, $1.to_i; '' } ], # ansi escape sequences that mess with the display [/\A\x1b\[((?:\d{1,3};?)+|)m/, lambda { |m| m = '0' if m.strip.empty? m.chomp(';').split(';'). each { |code| yield :display, code.to_i }; '' }], # malformed sequences [/\A\x1b\[?[\d;]{0,3}/, lambda { |m| '' }], # real text [/\A([^\x1b\x08]+)/m, lambda { |m| yield :text, m; '' }] ] while (size = text.size) > 0 tokens.each do |pattern, sub| break if text.sub!(pattern) { sub.call($1) } end break if text.size == size end end |