Class: Iro::Formatter::HTMLFormatter
- Inherits:
-
Object
- Object
- Iro::Formatter::HTMLFormatter
show all
- Defined in:
- lib/iro/formatter/html_formatter.rb
Defined Under Namespace
Modules: ConvertedHighlight
Class Method Summary
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Instance Method Summary
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Constructor Details
#initialize(source:, highlight:, prefix:) ⇒ HTMLFormatter
Returns a new instance of HTMLFormatter.
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# File 'lib/iro/formatter/html_formatter.rb', line 27
def initialize(source:, highlight:, prefix:)
@source = source.each_line.map(&:chomp)
@highlight = sort_highlight_by_position(highlight)
@prefix = prefix
end
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Class Method Details
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# File 'lib/iro/formatter/html_formatter.rb', line 14
def self.format(source, highlight, prefix: '')
formatter = self.new(
source: source,
highlight: highlight,
prefix: prefix,
)
formatter.format
end
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.sample_stylesheet ⇒ Object
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# File 'lib/iro/formatter/html_formatter.rb', line 23
def self.sample_stylesheet
File.join(__dir__, 'sample.css')
end
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Instance Method Details
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# File 'lib/iro/formatter/html_formatter.rb', line 33
def format
buf = []
@source.each.with_index do |line, lineno|
highlights = pop_highlight(lineno)
if highlights.empty?
buf << CGI.escapeHTML(line)
next
end
last_col = 0
highlighted_line = +''
highlights.each do |hi|
highlighted_line << CGI.escapeHTML(line[last_col...hi.column])
last_col = hi.column + hi.length
token = CGI.escapeHTML(line[(hi.column)...last_col])
highlighted_line << %Q!<span class="#{@prefix}#{hi.group}">#{token}</span>!
end
highlighted_line << line[last_col..-1]
buf << highlighted_line
end
buf.join("\n")
end
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#pop_highlight(lineno) ⇒ Object
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# File 'lib/iro/formatter/html_formatter.rb', line 68
def pop_highlight(lineno)
[].tap do |res|
while @highlight.first&.line == lineno
res << @highlight.shift
end
end
end
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#sort_highlight_by_position(highlight) ⇒ Object
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# File 'lib/iro/formatter/html_formatter.rb', line 58
def sort_highlight_by_position(highlight)
highlight.flat_map do |group, positions|
positions.map do |pos|
[group, *pos]
end
end.sort_by do |pos|
[pos.line, pos.column]
end
end
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