Handbook: File Contents

Read and write file contents easily:

dir['Rakefile'].contents
dir['Rakefile'].write "# overwritten from rush\n"

Search (aka grep) the files, but without the confusing differences between grep, egrep, and Ruby regular expressions:

dir['*.rb'].search(/describe Rush::[A-Z][a-z]+/ do)

The results of a search can be used as input for another search - or can be used with any other command.

dir['*.rb'].search(/^\s*class/).search(/Rush/).copy_to other_dir

Use "entries" to get just the list of files, or "lines" to get the line matches.

dir['**/*'].search(/describe/).lines

Better yet, search and replace. How about changing all your tabs to spaces?

myproj['**/*.rb'].replace_contents!(/\t/, ' ')

Doing some refactoring?

myproj['**/*.rb'].replace_contents!(/OldClass/, 'NewClass')

Don't forget - this is Ruby!

spec_lines   = myproj['**/*_spec.rb'].line_count
total_lines  = myproj['**/*.rb'].line_count 
spec_percent = (spec_lines * 100 / total_lines).round 
puts "Specs account for #{spec_percent}% of the total code."
puts (spec_percent >= 30) ? "Good for you!" : "Tsk, tsk."

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