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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.
"
" This file provides a utility function that performs auto-completion of
" package names, for use by other commands.
let s:goos = $GOOS
let s:goarch = $GOARCH
if len(s:goos) == 0
if exists('g:golang_goos')
let s:goos = g:golang_goos
elseif has('win32') || has('win64')
let s:goos = 'windows'
elseif has('macunix')
let s:goos = 'darwin'
else
let s:goos = '*'
endif
endif
if len(s:goarch) == 0
if exists('g:golang_goarch')
let s:goarch = g:golang_goarch
else
let s:goarch = '*'
endif
endif
function! go#package#Paths() abort
let dirs = []
if !exists("s:goroot")
if executable('go')
let s:goroot = go#util#env("goroot")
if go#util#ShellError() != 0
echomsg '''go env GOROOT'' failed'
endif
else
let s:goroot = $GOROOT
endif
endif
if len(s:goroot) != 0 && isdirectory(s:goroot)
let dirs += [s:goroot]
endif
let workspaces = split(go#path#Default(), go#util#PathListSep())
if workspaces != []
let dirs += workspaces
endif
return dirs
endfunction
" ImportPath returns the import path in the current directory it was executed
function! go#package#ImportPath() abort
let out = go#tool#ExecuteInDir("go list")
if go#util#ShellError() != 0
return -1
endif
let import_path = split(out, '\n')[0]
" go list returns '_CURRENTDIRECTORY' if the directory is not inside GOPATH.
" Check it and retun an error if that is the case
if import_path[0] ==# '_'
return -1
endif
return import_path
endfunction
function! go#package#FromPath(arg) abort
let path = fnamemodify(resolve(a:arg), ':p')
let dirs = go#package#Paths()
for dir in dirs
if len(dir) && match(path, dir) == 0
let workspace = dir
break
endif
endfor
if !exists('workspace')
return -1
endif
let path = substitute(path, '/*$', '', '')
let workspace = substitute(workspace . '/src/', '/+', '', '')
if isdirectory(path)
return substitute(path, workspace, '', '')
else
return substitute(substitute(path, workspace, '', ''),
\ '/' . fnamemodify(path, ':t'), '', '')
endif
endfunction
function! go#package#CompleteMembers(package, member) abort
silent! let content = go#util#System('godoc ' . a:package)
if go#util#ShellError() || !len(content)
return []
endif
let lines = filter(split(content, "\n"),"v:val !~ '^\\s\\+$'")
try
let mx1 = '^\s\+\(\S+\)\s\+=\s\+.*'
let mx2 = '^\%(const\|var\|type\|func\) \([A-Z][^ (]\+\).*'
let candidates = map(filter(copy(lines), 'v:val =~ mx1'),
\ 'substitute(v:val, mx1, "\\1", "")')
\ + map(filter(copy(lines), 'v:val =~ mx2'),
\ 'substitute(v:val, mx2, "\\1", "")')
return filter(candidates, '!stridx(v:val, a:member)')
catch
return []
endtry
endfunction
function! go#package#Complete(ArgLead, CmdLine, CursorPos) abort
let words = split(a:CmdLine, '\s\+', 1)
" do not complete package members for these commands
let neglect_commands = ["GoImportAs", "GoGuruScope"]
if len(words) > 2 && index(neglect_commands, words[0]) == -1
" Complete package members
return go#package#CompleteMembers(words[1], words[2])
endif
let dirs = go#package#Paths()
if len(dirs) == 0
" should not happen
return []
endif
let ret = {}
for dir in dirs
" this may expand to multiple lines
let root = split(expand(dir . '/pkg/' . s:goos . '_' . s:goarch), "\n")
call add(root, expand(dir . '/src'))
for r in root
for i in split(globpath(r, a:ArgLead.'*'), "\n")
if isdirectory(i)
let i .= '/'
elseif i !~ '\.a$'
continue
endif
let i = substitute(substitute(i[len(r)+1:], '[\\]', '/', 'g'),
\ '\.a$', '', 'g')
" without this the result can have duplicates in form of
" 'encoding/json' and '/encoding/json/'
let i = go#util#StripPathSep(i)
let ret[i] = i
endfor
endfor
endfor
return sort(keys(ret))
endfunction
" vim: sw=2 ts=2 et