add unite source

autoload/unite/sources/ultisnips.vim

@@ -0,0 +1,56 @@
+let s:save_cpo = &cpo
+set cpo&vim
+
+let s:unite_source = {
+      \ 'name': 'ultisnips',
+      \ 'hooks': {},
+      \ 'action_table': {},
+      \ 'default_action': 'expand',
+      \ }
+
+let s:unite_source.action_table.preview = {
+      \ 'description' : 'ultisnips snippets',
+      \ 'is_quit' : 0,
+      \ }
+
+function! s:unite_source.action_table.preview.func(candidate)
+  " no nice preview at this point, cannot get snippet text
+  let snippet_preview = a:candidate['word']
+  echo snippet_preview
+endfunction
+
+let s:unite_source.action_table.expand = {
+      \ 'description': 'expand the current snippet',
+      \ 'is_quit': 1
+      \}
+
+function! s:unite_source.action_table.expand.func(candidate)
+  let delCurrWord = (getline(".")[col(".")-1] == " ") ? "" : "diw"
+  exe "normal " . delCurrWord . "a" . a:candidate['trigger'] . " "
+  call UltiSnips#ExpandSnippet()
+  return ''
+endfunction
+
+function! s:unite_source.gather_candidates(args, context)
+  let default_val = {'word': '', 'unite__abbr': '', 'is_dummy': 0, 'source':
+        \  'ultisnips', 'unite__is_marked': 0, 'kind': 'command', 'is_matched': 1,
+        \    'is_multiline': 0}
+  let snippet_list = UltiSnips#SnippetsInCurrentScope()
+  let canditates = []
+  for snip in items(snippet_list)
+    let curr_val = copy(default_val)
+    let curr_val['word'] = snip[0] . "     " . snip[1]
+    let curr_val['trigger'] = snip[0]
+    call add(canditates, curr_val)
+  endfor
+  return canditates
+endfunction
+
+function! unite#sources#ultisnips#define()
+  return s:unite_source
+endfunction
+
+"unlet s:unite_source
+
+let &cpo = s:save_cpo
+unlet s:save_cpo

doc/UltiSnips.txt

@@ -1284,6 +1284,16 @@ offers a really nice completion dialogue for snippets.
 neocomplete - UltiSnips ships with a source for neocomplete and therefore
 offers out of the box completion dialogue support for it too.
 
+unite - similarly to neocomplete UltiSnips now has a source for unite.
+As an example of how you can use the unite source add the following mappings to
+your vimrc:
+
+    nnoremap <silent> <F12> :Unite -start-insert ultisnips<CR>
+    inoremap <silent> <F12> <ESC>:Unite -start-insert ultisnips<CR>
+
+Then typing <F12> in either insert or normal mode you will get unite interface
+with matching snippets. Pressing enter will expand the corresponding snippet.
+
 Supertab - UltiSnips has built-in support for Supertab. Just use a recent
 enough version of both plugins and <tab> will either expand a snippet or defer
 to Supertab for expansion.