CODEWITHSUNDEEP
rubyregex
arled
arled

Reputation: 2690

Place a comma and a space before every word with a capital letter

I'm working with ruby and I'm trying to place a comma and a space before every word with a capital letter apart from the beginning word.

str = Taxonomy term Another term One more

puts str.gsub(/\s/, ', ')

Output > Taxonomy, term, Another, term, One, more

Desired output > Taxonomy term, Another term, One more

My regex skills are very rusty so im simply stuck at this stage.

Any idea how to reach my desired output?

Upvotes: 2

Views: 2057

Answers (7)

Cary Swoveland
Cary Swoveland

Reputation: 110725

If you've become emotionally attached to what you tried:

str = "Taxonomy term Another term One more"

s = str.gsub(/\s/, ', ')
  #=> "Taxonomy, term, Another, term, One, more"

you could gsub that:

s.gsub(/, ([a-z]+)/,' \1')
  #=> "Taxonomy term, Another term, One more"

Putting it together:

str.gsub(/\s/, ', ').gsub(/, ([a-z]+)/,' \1')
  #=> "Taxonomy term, Another term, One more"

Upvotes: 1

Syon
Syon

Reputation: 7401

You can capture the capital letter and use it in the replace.

str.gsub(/\s(\p{lu})/, ', \1')

Using \p{lu} will match any Unicode upper case letter.

puts "Taxonomy term Another term Ōne ĺess".gsub(/\s(\p{lu})/, ', \1');

Output:
Taxonomy term, Another term, Ōne ĺess

Upvotes: 5

sawa
sawa

Reputation: 168209

You better not insert a new space. Use the one that was there.

"Taxonomy term Another term One more"
.gsub(/(?=\s+[A-Z])/, ",")
# => => "Taxonomy term, Another term, One more"

Upvotes: 2

Avinash Raj
Avinash Raj

Reputation: 174796

Pattern:

\s(?=[A-Z])

DEMO

And your code would be,

puts str.gsub(/\s(?=[A-Z])/, ", ")

\s(?=[A-Z]) Spaces which are followed by an Uppercase letter are matched. Then the matched spaces are replaced with a comma followed by a space.

Upvotes: 4

paq
paq

Reputation: 180

irb(main):001:0> 'Taxonomy term Another term One more'.gsub(/\s+([A-Z])/, ', \1')
=> "Taxonomy term, Another term, One more"

Upvotes: 0

nronas
nronas

Reputation: 181

What about this:

str.gsub(/\s(?<capital>[A-Z])/, ', \k<capital>')

This one will do a named match on the capital char and replace it with comma followed by space and the char again.

I hope that helps.

Upvotes: 1

bjhaid
bjhaid

Reputation: 9772

puts str.gsub(/\s(?=[A-Z])/, ", ") # => Taxonomy term, Another term, One more

Upvotes: 0

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