add syntax checkers eruby, sass and haml

syntax_checkers/eruby.vim

@@ -0,0 +1,23 @@
+if exists("loaded_eruby_syntax_checker")
+    finish
+endif
+let loaded_eruby_syntax_checker = 1
+
+"bail if the user doesnt have ruby or cat installed
+if !executable("ruby") || !executable("cat")
+    finish
+endif
+
+function! SyntaxCheckers_eruby_GetQFList()
+    let &makeprg='cat '. expand("%") . ' \| ruby -e "require \"erb\"; puts ERB.new(ARGF.read, nil, \"-\").src" \| ruby -c'
+    set errorformat=%-GSyntax\ OK,%E-:%l:\ syntax\ error\\,\ %m,%Z%p^,%W-:%l:\ warning:\ %m,%Z%p^,%-C%.%#
+    silent make!
+
+    "the file name isnt in the output so stick in the buf num manually
+    let qflist = getqflist()
+    for i in qflist
+        let i['bufnr'] = bufnr("")
+    endfor
+
+    return qflist
+endfunction

syntax_checkers/haml.vim

@@ -0,0 +1,31 @@
+"============================================================================
+"File:        haml.vim
+"Description: Syntax checking plugin for syntastic.vim
+"Maintainer:  Martin Grenfell <martin_grenfell at msn 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("loaded_haml_syntax_checker")
+    finish
+endif
+let loaded_haml_syntax_checker = 1
+
+"bail if the user doesnt have the haml binary installed
+if !executable("haml")
+    finish
+endif
+
+function! SyntaxCheckers_haml_GetQFList()
+    let output = system("haml -c " . expand("%"))
+    if v:shell_error != 0
+        "haml only outputs the first error, so parse it ourselves
+        let line = substitute(output, '^Syntax error on line \(\d*\):.*', '\1', '')
+        let msg = substitute(output, '^Syntax error on line \d*:\(.*\)', '\1', '')
+        return [{'lnum' : line, 'text' : msg, 'bufnr': bufnr("") }]
+    endif
+    return []
+endfunction

syntax_checkers/sass.vim

@@ -0,0 +1,31 @@
+"============================================================================
+"File:        sass.vim
+"Description: Syntax checking plugin for syntastic.vim
+"Maintainer:  Martin Grenfell <martin_grenfell at msn 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("loaded_sass_syntax_checker")
+    finish
+endif
+let loaded_sass_syntax_checker = 1
+
+"bail if the user doesnt have the sass binary installed
+if !executable("sass")
+    finish
+endif
+
+function! SyntaxCheckers_sass_GetQFList()
+    let output = system("sass -c " . expand("%"))
+    if v:shell_error != 0
+        "sass only outputs the first error, so parse it ourselves
+        let line = substitute(output, '^Syntax error on line \(\d*\):.*', '\1', '')
+        let msg = substitute(output, '^Syntax error on line \d*:\(.*\)', '\1', '')
+        return [{'lnum' : line, 'text' : msg, 'bufnr': bufnr("") }]
+    endif
+    return []
+endfunction