Add pep257 Python syntax_checker

syntax_checkers/python/pep257.vim

@@ -0,0 +1,39 @@
+"============================================================================
+"File:        pep257.vim
+"Description: Docstring style checking plugin for syntastic.vim
+"============================================================================
+"
+" For details about pep257 see: https://github.com/GreenSteam/pep257
+
+if exists("g:loaded_syntastic_python_pep257_checker")
+    finish
+endif
+let g:loaded_syntastic_python_pep257_checker=1
+
+function! SyntaxCheckers_python_pep257_IsAvailable()
+    return executable('pep257')
+endfunction
+
+function! SyntaxCheckers_python_pep257_GetLocList()
+    let makeprg = syntastic#makeprg#build({
+        \ 'exe': 'pep257',
+        \ 'filetype': 'python',
+        \ 'subchecker': 'pep257' })
+
+    let errorformat = '%f:%l:%c: %m'
+
+    let loclist = SyntasticMake({
+        \ 'makeprg': makeprg,
+        \ 'errorformat': errorformat,
+        \ 'subtype': 'Style' })
+
+    for n in range(len(loclist))
+        let loclist[n]['type'] = loclist[n]['text'] =~? '^W' ? 'W' : 'E'
+    endfor
+
+    return loclist
+endfunction
+
+call g:SyntasticRegistry.CreateAndRegisterChecker({
+    \ 'filetype': 'python',
+    \ 'name': 'pep257'})