Module: Gemma::Utility
- Defined in:
- lib/gemma/utility.rb
Overview
Utility functions.
Class Method Summary collapse
-
.print_usage_from_file_comment(file, comment_char = '#', io = $stdout) ⇒ Object
If the usage information for a script is documented in a comment block at the top of the file, this method prints it out.
-
.rgrep(tag, path, io = $stdout) ⇒ nil
A very simple recursive grep.
Class Method Details
.print_usage_from_file_comment(file, comment_char = '#', io = $stdout) ⇒ Object
If the usage information for a script is documented in a comment block at the top of the file, this method prints it out. If there is a shebang (#!) on the first line, it is not printed.
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# File 'lib/gemma/utility.rb', line 12 def self.print_usage_from_file_comment( file, comment_char = '#', io = $stdout ) lines = File.readlines(file) lines.shift if lines.first =~ /^#!/ # ignore shebang lines.each do |line| line.strip! break unless line =~ /^#{comment_char}(.*)/ io.puts Regexp.last_match(1) end end |
.rgrep(tag, path, io = $stdout) ⇒ nil
A very simple recursive grep.
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# File 'lib/gemma/utility.rb', line 35 def self.rgrep(tag, path, io = $stdout) Dir.chdir path do globs = Dir['**/*'] + Dir['**/.*'] globs.select { |f| File.file?(f) }.sort.each do |f| File.readlines(f).each_with_index do |line, i| io.puts "#{f}:#{i}: #{line}" if line =~ tag end end end nil end |