Add ruby flog checker

syntax_checkers/ruby/flog.vim

@@ -0,0 +1,82 @@
+"============================================================================
+"File:        flog.vim
+"Description: Syntax checking plugin for syntastic.vim
+"Maintainer:  Tim Carry <tim at pixelastic dot com>
+"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.
+"
+"============================================================================
+
+if exists('g:loaded_syntastic_ruby_flog_checker')
+    finish
+endif
+let g:loaded_syntastic_ruby_flog_checker = 1
+
+if !exists('g:syntastic_ruby_flog_threshold_warning')
+    let g:syntastic_ruby_flog_threshold_warning = 45
+endif
+
+if !exists('g:syntastic_ruby_flog_threshold_error')
+    let g:syntastic_ruby_flog_threshold_error = 90
+endif
+
+let s:save_cpo = &cpo
+set cpo&vim
+
+function! SyntaxCheckers_ruby_flog_GetLocList() dict
+    let makeprg = self.makeprgBuild({})
+
+    " Example output:
+    "   93.25: MyClass::my_method my_file:42
+    "
+    " %p for the leading spaces
+    " %m for the message (score)
+    " :\ %.%#: for anything in between the :
+    " %l for the line number
+    let errorformat = '%p%m:\ %.%#:%l'
+
+    let loclist = SyntasticMake({
+        \ 'makeprg': makeprg,
+        \ 'defaults': {'bufnr': bufnr('')},
+        \ 'errorformat': errorformat})
+
+    " Split output into error and warning
+    let min = g:syntastic_ruby_flog_threshold_warning
+    let max = g:syntastic_ruby_flog_threshold_error
+    for e in loclist
+      if e['valid'] ==# '0'
+        continue
+      endif
+
+      let score = str2nr(e['text'])
+      " Discard scores too low
+      if score < min
+        let e['valid'] = '0'
+        continue
+      endif
+
+      " Set as warning or error based on the thresholds
+      let e['text'] = 'Complexity is too high (' . score . '/'
+      if score > max
+        let e['type'] = 'E'
+        let e['text'] .= max . ')'
+      else
+        let e['type'] = 'W'
+        let e['text'] .= min . ')'
+      endif
+    endfor
+
+    return loclist
+endfunction
+
+call g:SyntasticRegistry.CreateAndRegisterChecker({
+    \ 'filetype': 'ruby',
+    \ 'name': 'flog'})
+
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+" vim: set sw=4 sts=4 et fdm=marker: