class ShowCode::Code
Attributes
content[RW]
Public Class Methods
new(location)
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# File lib/show_code/code.rb, line 7 def initialize(location) @file = location.file file_lines = File.readlines(@file) if @file @line = real_start_line file_lines, location.line related_lines = file_lines[(@line - 1)..-1] || [] codes = extract_method_code related_lines @lines = codes.count @content = codes.join end
Public Instance Methods
add_line_numbers(output)
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# File lib/show_code/code.rb, line 58 def add_line_numbers(output) line_number = line - 1 output.split("\n").map do |loc| line_number += 1 "\e[33m#{line_number.to_s.ljust(4, ' ')}\e[0m#{loc}" end.join("\n") end
expression_end?(codes)
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refer: gist.github.com/judofyr/1373383
# File lib/show_code/code.rb, line 38 def expression_end?(codes) str = codes.join catch(:valid) do eval("BEGIN{throw :valid}; #{str}") end # skip , or \ str !~ /[,\\]\s*\z/ rescue SyntaxException false end
extract_method_code(related_lines)
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# File lib/show_code/code.rb, line 28 def extract_method_code(related_lines) codes = [] related_lines.each do |loc| codes << loc return codes if expression_end?(codes) end raise SyntaxError, "unexpected $end" end
greet()
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Example: ShowCode
'ShowCode::Code.new.greet'
# File lib/show_code/code.rb, line 67 def greet puts 'Hello ShowCode!' end
highlighted(opts = {})
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# File lib/show_code/code.rb, line 51 def highlighted(opts = {}) options = {:line_numbers => true}.merge(opts) colorized = CodeRay.scan(content, :ruby).tty output = options[:line_numbers] ? add_line_numbers(colorized) : colorized "\n%s\n\n" % output end
real_start_line(file_lines, line)
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# File lib/show_code/code.rb, line 19 def real_start_line(file_lines, line) return line unless line.zero? file_lines.each do |loc| line += 1 return line if /^\s*(class|module)\s+[A-Z]/ === loc end end