Here is a little ruby File class method called modify!. This simple method allows you to invoke a block on file content - array of chomped lines.
This beautiful method looks like this ;)
class File
def self.modify!( filename, &block )
file = open( filename, 'r+' )
lines = file.readlines.collect! do |line|
line.chomp
end
yield lines
file.pos = 0
file.print(lines.join("\n"))
file.truncate(file.pos)
file.close
end
end
And it can be use it like this:
File.modify!('somefile.txt') do |lines|
lines.collect! do |line|
line.upcase+"!"
end
lines << "new line"
end
For now it’s too small to make a gem. But maybe I’ll add some similar object methods, who knows ;)
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