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" Copyright 2011 The Go Authors. All rights reserved.
" Use of this source code is governed by a BSD-style
" license that can be found in the LICENSE file.
"
" godoc.vim: Vim command to see godoc.
"
"
" Commands:
"
" :Godoc
"
" Open the relevant Godoc for either the word[s] passed to the command or
" the, by default, the word under the cursor.
"
" Options:
"
" g:go_godoc_commands [default=1]
"
" Flag to indicate whether to enable the commands listed above.
if exists("g:loaded_godoc")
finish
endif
let g:loaded_godoc = 1
let s:buf_nr = -1
let s:last_word = ''
if !exists('g:go_godoc_commands')
let g:go_godoc_commands = 1
endif
if g:go_godoc_commands
command! -nargs=* -range -complete=customlist,go#complete#Package Godoc :call s:Godoc(<f-args>)
endif
nnoremap <silent> <Plug>(godoc-keyword) :<C-u>call <SID>Godoc('')<CR>
function! s:GodocView()
if !bufexists(s:buf_nr)
leftabove new
file `="[Godoc]"`
let s:buf_nr = bufnr('%')
elseif bufwinnr(s:buf_nr) == -1
leftabove split
execute s:buf_nr . 'buffer'
delete _
elseif bufwinnr(s:buf_nr) != bufwinnr('%')
execute bufwinnr(s:buf_nr) . 'wincmd w'
endif
setlocal filetype=godoc
setlocal bufhidden=delete
setlocal buftype=nofile
setlocal noswapfile
setlocal nobuflisted
setlocal modifiable
setlocal nocursorline
setlocal nocursorcolumn
setlocal iskeyword+=:
setlocal iskeyword-=-
nnoremap <buffer> <silent> K :Godoc<cr>
au BufHidden <buffer> call let <SID>buf_nr = -1
endfunction
function! s:GodocNotFound(content)
if !len(a:content)
return 1
endif
return a:content =~# '^.*: no such file or directory\n'
endfunction
function! s:GodocWord(word)
if !executable('godoc')
echohl WarningMsg
echo "godoc command not found."
echo " install with: go get code.google.com/p/go.tools/cmd/godoc"
echohl None
return 0
endif
let word = a:word
silent! let content = system('godoc ' . word)
if v:shell_error || !len(content)
if len(s:last_word)
silent! let content = system('godoc ' . s:last_word.'/'.word)
if v:shell_error || s:GodocNotFound(content)
echo 'No documentation found for "' . word . '".'
return 0
endif
let word = s:last_word.'/'.word
else
echo 'No documentation found for "' . word . '".'
return 0
endif
endif
let s:last_word = word
silent! call s:GodocView()
setlocal modifiable
silent! %d _
silent! put! =content
silent! normal gg
setlocal nomodifiable
setfiletype godoc
return 1
endfunction
function! s:Godoc(...)
if !len(a:000)
let oldiskeyword = &iskeyword
setlocal iskeyword+=.
let word = expand('<cword>')
let &iskeyword = oldiskeyword
let word = substitute(word, '[^a-zA-Z0-9\\/._~-]', '', 'g')
let words = split(word, '\.\ze[^./]\+$')
else
let words = a:000
endif
if !len(words)
return
endif
if s:GodocWord(words[0])
if len(words) > 1
if search('^\%(const\|var\|type\|\s\+\) ' . words[1] . '\s\+=\s')
return
endif
if search('^func ' . words[1] . '(')
silent! normal zt
return
endif
echo 'No documentation found for "' . words[1] . '".'
endif
endif
endfunction
" vim:ts=4:sw=4:et
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