" grep source for unite.vim
"
" setting example:
"
"   let g:unite_source_grep_default_dir = '~/.vim'
"   let g:unite_source_grep_default_opts = '-iR'

let s:grep_source = { 'name': 'grep', 'is_volatile': 1 }
function! s:grep_source.gather_candidates(args, context)
  let l:directory  = get(a:args, 0, g:unite_source_grep_default_dir)
  let l:extra_opts = get(a:args, 1, g:unite_source_grep_default_opts)

  if l:directory =~ '^-'
    let l:extra_opts = l:directory
    let l:directory  = g:unite_source_grep_default_dir
  endif

  let l:candidates = split(
    \ unite#util#system(printf(
    \   'grep %s %s %s',
    \   a:context.input,
    \   l:directory,
    \   l:extra_opts)),
    \  "\n")
  return map(l:candidates,
    \ '{
    \   "word": v:val,
    \   "source": "grep",
    \   "kind": "file",
    \   "action__path": substitute(v:val, "\:.*", "", ""),
    \ }')
endfunction
call unite#define_source(s:grep_source)