Borrower

For borrowing and/or concatenating little snippets.

Check out the ruby versions we're testing against in travis.yml. Don't see a ruby version you're using? Pull requests are welcome.

Use

To use borrower you first need to require it, then borrow a file from a source to a local destination.

require 'borrower'

borrow "/path/to/file.txt", to: "/destination/file.txt"
borrow "http://code.jquery.com/jquery-1.9.1.js", to: "assets/vendor/jquery.1.9.1.js"

You can also manipulate the content of the file before it is written by passing a block, and returning your desired output

require 'borrower'

borrow '/path/to/file.txt', to: '/now/with/feeling.txt' do |content|
  content.gsub('.', '!')
end

Named files & lookup paths

To avoid having to type out the full path of a file each time you'd like to borrow it, you can setup names for files or lookup paths.

Borrower.manifest do |m|
  m.file "jquery", "http://code.jquery.com/jquery-1.9.1.js"
  m.dir "/long/path/name/to/the/desired/directory"
end

After configuring the manifest so, you can now borrow jquery by just using it's name:

borrow "jquery", to: "/destination/jquery.1.9.1.js"

Borrower will also look for a manifest file named manifest.borrower. You can write your directory and file names in yaml format and they will be loaded from the manifest file.

files:
  name: path
  jquery: "http://code.jquery.com/jquery-1.9.1.js"

directories:
  first/directory
  another/directory

You can also use paths relative to the directories you described. Note that the shortest match wins, so in cases where there are two files in a given directory -- the file closest to the root (or with the shortest dir name) will be grabbed:

# file structure
# /foo.txt
# /woo.txt
# /subdir/woo.txt
# /subdir/baz.txt

borrow "foo.txt", to: "/destination/foo.txt"
borrow "woo.txt", to: "/destination/woo.txt"
# note that this takes the /woo.txt, not /subdir/woo.txt

borrow "baz.txt", to: "/destination/baz.txt"
# this finds baz.txt at /subdir/baz.txt

Merging/Concatenation

Borrower also supports merging files it knows about as it is moving them by passing the merge: true param. Just add #= borrow 'file_name' anywhere in the file you're moving.

# foo.rb
I'm a line from foo.rb

# woo.rb
#= borrow 'foo.rb'

borrow 'woo.rb', to: 'concat.rb', merge: true
# => results in the file:
# concat.rb
I'm a line from foo.rb

Borrower defaults to # as the comment character, but you can pass a file type to look for other comment symbols.

# script.js
//= borrow 'jquery'
$(document).ready( function(){
  alert("the document is ready");
})

# borrow.rb
borrow 'script.js', to: 'public/script.js', merge: true, type: 'js'

You can set a custom comment character as well, so if you were working in a language we don't have a comment symbol for (though please add a pull request for that), you could do it like so:

# your_file.txt
??= borrow 'jquery'
$(document).ready( function(){
  alert("the document is ready");
});

# borrow.rb
borrow 'your_file.txt', to: 'foo.txt', merge: true, comment: '??'

File Conflicts

In the case that a file already exists at the destination_path, by default Borrower will overwrite the file. To change this behavior you can pass an :on_conflict option.

borrow 'from', to: 'to', on_conflict: :overwrite
# => the default, will overwrite the file

borrow 'from', to: 'to', on_conflict: :prompt
# => will ask if the file should be overwritten

borrow 'from', to: 'to', on_conflict: :skip
# => skips existing files

borrow 'from', to: 'to', on_conflict: :raise_error
# => raises an error

Utilities

At its core borrower abstracts some common tasks over the file system.

Fetch Content

Borrower.take 'path/to/file'

Write Content

on_conflict = :overwrite
Borrower.put "content for file", 'path/to/destination', on_conflict

on_conflict = :overwrite
# => replaces the contents of the file if already present

on_conflict = :skip
# => skips putting content

on_conflict = :propt
# => asks via stdout & stdin if the file should be overwriten

on_conflict = :raise_error
# => raises an error

Add lookup paths or files

Borrower.manifest do |m|
  m.file "jquery", "http://code.jquery.com/jquery-1.10.2.min.js"
  # => adds an alias for jquery
  m.dir  "vendor"
  # => adds the vendor dir to the lookup paths
end

Find file in borrower paths

Borrower.find 'partial/path/to/file'
# => full path to file

Testing

$ rspec

Contributing

If there is any thing you'd like to contribute or fix, please:

• Fork the repo
• Add tests for any new functionality
• Make your changes
• Verify all new &existing tests pass
• Make a pull request

License

The borrower gem is distributed under the MIT License.