Add json example (#1625)

* Add json example

* Add json func

* Add json support

autoload/SpaceVim.vim

@@ -595,6 +595,13 @@ function! SpaceVim#loadCustomConfig() abort
     exe 'source ' . custom_glob_conf
   endif
 
+  " json config
+  let json_global = expand('~/.SpaceVim.d/init.json')
+  if filereadable(json_global)
+    let config = join(readfile(json_global), '')
+    call SpaceVim#custom#apply(config)
+  endif
+
   if g:spacevim_enable_ycm && g:spacevim_snippet_engine !=# 'ultisnips'
     call SpaceVim#logger#info('YCM only support ultisnips, change g:spacevim_snippet_engine to ultisnips')
     let g:spacevim_snippet_engine = 'ultisnips'

autoload/SpaceVim/custom.vim

@@ -70,3 +70,17 @@ endfunction
 function! SpaceVim#custom#SPCGroupName(keys, name) abort
   call add(g:_spacevim_mappings_space_custom_group_name, [a:keys, a:name])
 endfunction
+
+
+function! SpaceVim#custom#apply(config) abort
+  let config = json_decode(a:config)
+  for key in keys(config)
+    if exists('g:spacevim_' . key)
+      exe 'let g:spacevim_' . key . ' = "' . config[key] . '"'
+    endif
+  endfor
+endfunction
+
+function! SpaceVim#custom#write(force) abort
+
+endfunction

mode/basic.json

@@ -0,0 +1,10 @@
+{
+    "colorscheme": "grubox",
+    "background": "dark",
+    "guicolors": true,
+    "statusline_separator": "nil",
+    "statusline_inactive_separator": "bar",
+    "buffer_index_type": 4,
+    "filetype_icon": false,
+    "statusline_display_mode": false
+}