Checker html/w3: Add support for SVG and XHTML

Apply the same changes that were applied to html/validator in
vim-syntastic#2241 to w3/html so that it can be used to
validate SVG and XHTML as well.

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>

syntax_checkers/html/w3.vim

@@ -15,18 +15,39 @@ if exists('g:loaded_syntastic_html_w3_checker')
 endif
 let g:loaded_syntastic_html_w3_checker = 1
 
-if !exists('g:syntastic_html_w3_api')
-    let g:syntastic_html_w3_api = 'http://validator.w3.org/check'
-endif
-
 let s:save_cpo = &cpo
 set cpo&vim
 
-function! SyntaxCheckers_html_w3_GetLocList() dict
+" Constants {{{1
+
+let s:DEFAULTS = {
+    \ 'api':      'https://validator.w3.org/check' }
+
+let s:CONTENT_TYPE = {
+    \ 'html': 'text/html',
+    \ 'svg':  'image/svg+xml',
+    \ 'xhtml': 'application/xhtml+xml' }
+
+" }}}1
+
+" @vimlint(EVL101, 1, l:api)
+function! SyntaxCheckers_html_w3_GetLocList() dict " {{{1
     let buf = bufnr('')
-    let makeprg = self.getExecEscaped() . ' -q -L -s -F output=json ' .
-        \ '-F uploaded_file=@' . syntastic#util#shescape(fnamemodify(bufname(buf), ':p')) . '\;type=text/html ' .
-        \ g:syntastic_html_w3_api
+    let type = self.getFiletype()
+    let fname = syntastic#util#shescape(fnamemodify(bufname(buf), ':p'))
+
+    for key in keys(s:DEFAULTS)
+        let l:{key} = syntastic#util#var(type . '_w3_' . key, get(s:DEFAULTS, key))
+    endfor
+    let ctype = get(s:CONTENT_TYPE, type, '')
+
+    " vint: -ProhibitUsingUndeclaredVariable
+    let makeprg = self.getExecEscaped() . ' -q -L -s --compressed -F output=json ' .
+        \ '-F uploaded_file=@' . fname .
+            \ (ctype !=# '' ? '\;type=' . ctype : '') .
+            \ '\;filename=' . fname .
+        \ ' ' . api
+    " vint: ProhibitUsingUndeclaredVariable
 
     let errorformat =
         \ '%A %\+{,' .
@@ -50,7 +71,11 @@ function! SyntaxCheckers_html_w3_GetLocList() dict
     endfor
 
     return loclist
-endfunction
+endfunction " }}}1
+" @vimlint(EVL101, 0, l:schema)
+" @vimlint(EVL101, 0, l:parser)
+" @vimlint(EVL101, 0, l:nsfilter)
+" @vimlint(EVL101, 0, l:api)
 
 call g:SyntasticRegistry.CreateAndRegisterChecker({
     \ 'filetype': 'html',

syntax_checkers/svg/w3.vim

@@ -0,0 +1,23 @@
+"============================================================================
+"File:        w3.vim
+"Description: Syntax checking plugin for syntastic
+"Maintainer:  Martin Grenfell <martin.grenfell at gmail 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_svg_w3_checker')
+    finish
+endif
+let g:loaded_syntastic_svg_w3_checker = 1
+
+call g:SyntasticRegistry.CreateAndRegisterChecker({
+    \ 'filetype': 'svg',
+    \ 'name': 'w3',
+    \ 'redirect': 'html/w3'})
+
+" vim: set sw=4 sts=4 et fdm=marker:

syntax_checkers/xhtml/w3.vim

@@ -0,0 +1,23 @@
+"============================================================================
+"File:        w3.vim
+"Description: Syntax checking plugin for syntastic
+"Maintainer:  Martin Grenfell <martin.grenfell at gmail 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_xhtml_w3_checker')
+    finish
+endif
+let g:loaded_syntastic_xhtml_w3_checker = 1
+
+call g:SyntasticRegistry.CreateAndRegisterChecker({
+    \ 'filetype': 'xhtml',
+    \ 'name': 'w3',
+    \ 'redirect': 'html/w3'})
+
+" vim: set sw=4 sts=4 et fdm=marker: