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