I really have problem reading code with spaces, so I use the visual studio code editor to indent codes from spaces to tabs before I read them.
But the problem is rails has a lot of files, I have to do the same operation repetitively. So, I want to use Dir.glob to iterate over all of them and covert spaces to tabs and overwrite those files. It is a terrible idea, but still...
Currently my String#spaces_to_tabs() method looks like this:
Code
# A method that works for now...
String.define_method(:spaces_to_tabs) do
each_line.map do |x|
match = x.match(/^([^\S\t\n\r]*)/)[0]
m_len = match.length
(m_len > 0 && m_len % 2 == 0) ? ?\t * (m_len / 2) + x[m_len .. -1] : x
end.join
end
Which kind of works
Here's a test:
# Put some content that will get converted to space
content = <<~EOF << '# Hello!'
def x
'Hello World'
end
p x
module X
refine Array do
define_method(:tally2) do
uniq.reduce({}) { |h, x| h.merge!( x => count(x) ) }
end
end
end
using X
[1, 2, 3, 4, 4, 4,?a, ?b, ?a].tally2
p [1, 2, 3, 4, 4, 4,?a, ?b, ?a].tally2
\r\r\t\t # Some invalid content
EOF
puts content.spaces_to_tabs
Output:
def x
'Hello World'
end
p x
module X
refine Array do
define_method(:tally2) do
uniq.reduce({}) { |h, x| h.merge!( x => count(x) ) }
end
end
end
using X
[1, 2, 3, 4, 4, 4,?a, ?b, ?a].tally2
p [1, 2, 3, 4, 4, 4,?a, ?b, ?a].tally2
# Some invalid content
# Hello!
Currently it does not:
- Affect white-spaces (\t, \r, \n) other than spaces.
- Affect the output of code, only converts spaces to tabs.
I can't use my editor because:
- With Dir.glob (not included in this example), I can iterate over only .rb, .js, .erb, .html, .css, and .scss files.
Also, this is slow, but I can have at most 1000 files (above extensions) with 1000 lines of code for each file, but that's max, and not too practical, I generally have < 100 files with a couple of hundred lines of code. The code can take 10 seconds, which is not a problem here, since I need to run the code once for a project...
Is there a better way to do it?
Edit
Here's the full code with globbing for converting all major files in rails:
#!/usr/bin/ruby -w
String.define_method(:bold) { "\e[1m#{self}" }
String.define_method(:spaces_to_tabs) do
each_line.map do |x|
match = x.match(/^([^\S\t\n\r]*)/)[0]
m_len = match.length
(m_len > 0 && m_len % 2 == 0) ? ?\t * (m_len / 2) + x[m_len .. -1] : x
end.join
end
GREEN = "\e[38;2;85;160;10m".freeze
BLUE = "\e[38;2;0;125;255m".freeze
TURQUOISE = "\e[38;2;60;230;180m".freeze
RESET = "\e[0m".freeze
BLINK = "\e[5m".freeze
dry_test = ARGV.any? { |x| x[/^\-(\-dry\-test|d)$/] }
puts "#{TURQUOISE.bold}:: Info:#{RESET}#{TURQUOISE} Running in Dry Test mode. Files will not be changed.#{RESET}\n\n" if dry_test
Dir.glob("{app,config,db,lib,public}/**/**.{rb,erb,js,css,scss,html}").map do |y|
if File.file?(y) && File.readable?(y)
read = IO.read(y)
converted = read.spaces_to_tabs
unless read == converted
puts "#{BLINK}#{BLUE.bold}:: Converting#{RESET}#{GREEN} indentation to tabs of #{y}#{RESET}"
IO.write(y, converted) unless dry_test
end
end
end
