New syntax checker for Ruby: rubocop.

Author: roktas

syntax_checkers/ruby/rubocop.vim

@@ -0,0 +1,52 @@
+"============================================================================
+"File:        rubocop.vim
+"Description: Syntax checking plugin for syntastic.vim
+"Maintainer:  Recai Oktaş <roktas@bil.omu.edu.tr>
+"License:     This program is free software. It comes without any warranty,
+"             to the extent permitted by applicable law. You can redistribute
+"             it and/or modify it under the terms of the Do What The Fuck You
+"             Want To Public License, Version 2, as published by Sam Hocevar.
+"             See http://sam.zoy.org/wtfpl/COPYING for more details.
+"
+"============================================================================
+"
+" In order to use rubocop with the default ruby checker (mri):
+"     let g:syntastic_ruby_checkers = ['mri', 'rubocop']
+
+if exists("g:loaded_syntastic_ruby_rubocop_checker")
+    finish
+endif
+let g:loaded_syntastic_ruby_rubocop_checker=1
+
+function! SyntaxCheckers_ruby_rubocop_IsAvailable()
+    return executable('rubocop')
+endfunction
+
+function! SyntaxCheckers_ruby_rubocop_GetLocList()
+    let makeprg = syntastic#makeprg#build({
+                \ 'exe': 'rubocop',
+                \ 'args': '--emacs --silent',
+                \ 'subchecker': 'rubocop' })
+
+    let errorformat = '%f:%l:\ %t:\ %m'
+
+    let loclist = SyntasticMake({
+                \ 'makeprg': makeprg,
+                \ 'errorformat': errorformat,
+                \ 'subtype': 'Style'})
+
+    " convert rubocop severities to error types recognized by syntastic
+    for n in range(len(loclist))
+        if loclist[n]['type'] == 'F'
+            let loclist[n]['type'] = 'E'
+        elseif loclist[n]['type'] != 'W' || loclist[n]['type'] != 'E'
+            let loclist[n]['type'] = 'W'
+        endif
+    endfor
+
+    return loclist
+endfunction
+
+call g:SyntasticRegistry.CreateAndRegisterChecker({
+    \ 'filetype': 'ruby',
+    \ 'name': 'rubocop'})