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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.
-"
-" import.vim: Vim commands to import/drop Go packages.
-"
-" This filetype plugin adds three new commands for go buffers:
-"
-" :Import {path}
-"
-" Import ensures that the provided package {path} is imported
-" in the current Go buffer, using proper style and ordering.
-" If {path} is already being imported, an error will be
-" displayed and the buffer will be untouched.
-"
-" :ImportAs {localname} {path}
-"
-" Same as Import, but uses a custom local name for the package.
-"
-" :Drop {path}
-"
-" Remove the import line for the provided package {path}, if
-" present in the current Go buffer. If {path} is not being
-" imported, an error will be displayed and the buffer will be
-" untouched.
-"
-" If you would like to add shortcuts, you can do so by doing the following:
-"
-" Import fmt
-" au Filetype go nnoremap <buffer> <LocalLeader>f :Import fmt<CR>
-"
-" Drop fmt
-" au Filetype go nnoremap <buffer> <LocalLeader>F :Drop fmt<CR>
-"
-" Import the word under your cursor
-" au Filetype go nnoremap <buffer> <LocalLeader>k
-" \ :exe 'Import ' . expand('<cword>')<CR>
-"
-" The backslash '\' is the default maplocalleader, so it is possible that
-" your vim is set to use a different character (:help maplocalleader).
-"
-" Options:
-"
-" g:go_import_commands [default=1]
-"
-" Flag to indicate whether to enable the commands listed above.
-"
-if exists("b:did_ftplugin_go_import")
- finish
-endif
-
-if !exists("g:go_import_commands")
- let g:go_import_commands = 1
-endif
-
-if g:go_import_commands
- command! -buffer -nargs=? -complete=customlist,go#complete#Package Drop call s:SwitchImport(0, '', <f-args>)
- command! -buffer -nargs=1 -complete=customlist,go#complete#Package Import call s:SwitchImport(1, '', <f-args>)
- command! -buffer -nargs=* -complete=customlist,go#complete#Package ImportAs call s:SwitchImport(1, <f-args>)
-endif
-
-function! s:SwitchImport(enabled, localname, path)
- let view = winsaveview()
- let path = a:path
-
- " Quotes are not necessary, so remove them if provided.
- if path[0] == '"'
- let path = strpart(path, 1)
- endif
- if path[len(path)-1] == '"'
- let path = strpart(path, 0, len(path) - 1)
- endif
- if path == ''
- call s:Error('Import path not provided')
- return
- endif
-
- " Extract any site prefix (e.g. github.com/).
- " If other imports with the same prefix are grouped separately,
- " we will add this new import with them.
- " Only up to and including the first slash is used.
- let siteprefix = matchstr(path, "^[^/]*/")
-
- let qpath = '"' . path . '"'
- if a:localname != ''
- let qlocalpath = a:localname . ' ' . qpath
- else
- let qlocalpath = qpath
- endif
- let indentstr = 0
- let packageline = -1 " Position of package name statement
- let appendline = -1 " Position to introduce new import
- let deleteline = -1 " Position of line with existing import
- let linesdelta = 0 " Lines added/removed
-
- " Find proper place to add/remove import.
- let line = 0
- while line <= line('$')
- let linestr = getline(line)
-
- if linestr =~# '^package\s'
- let packageline = line
- let appendline = line
-
- elseif linestr =~# '^import\s\+('
- let appendstr = qlocalpath
- let indentstr = 1
- let appendline = line
- let firstblank = -1
- let lastprefix = ""
- while line <= line("$")
- let line = line + 1
- let linestr = getline(line)
- let m = matchlist(getline(line), '^\()\|\(\s\+\)\(\S*\s*\)"\(.\+\)"\)')
- if empty(m)
- if siteprefix == "" && a:enabled
- " must be in the first group
- break
- endif
- " record this position, but keep looking
- if firstblank < 0
- let firstblank = line
- endif
- continue
- endif
- if m[1] == ')'
- " if there's no match, add it to the first group
- if appendline < 0 && firstblank >= 0
- let appendline = firstblank
- endif
- break
- endif
- let lastprefix = matchstr(m[4], "^[^/]*/")
- if a:localname != '' && m[3] != ''
- let qlocalpath = printf('%-' . (len(m[3])-1) . 's %s', a:localname, qpath)
- endif
- let appendstr = m[2] . qlocalpath
- let indentstr = 0
- if m[4] == path
- let appendline = -1
- let deleteline = line
- break
- elseif m[4] < path
- " don't set candidate position if we have a site prefix,
- " we've passed a blank line, and this doesn't share the same
- " site prefix.
- if siteprefix == "" || firstblank < 0 || match(m[4], "^" . siteprefix) >= 0
- let appendline = line
- endif
- elseif siteprefix != "" && match(m[4], "^" . siteprefix) >= 0
- " first entry of site group
- let appendline = line - 1
- break
- endif
- endwhile
- break
-
- elseif linestr =~# '^import '
- if appendline == packageline
- let appendstr = 'import ' . qlocalpath
- let appendline = line - 1
- endif
- let m = matchlist(linestr, '^import\(\s\+\)\(\S*\s*\)"\(.\+\)"')
- if !empty(m)
- if m[3] == path
- let appendline = -1
- let deleteline = line
- break
- endif
- if m[3] < path
- let appendline = line
- endif
- if a:localname != '' && m[2] != ''
- let qlocalpath = printf("%s %" . len(m[2])-1 . "s", a:localname, qpath)
- endif
- let appendstr = 'import' . m[1] . qlocalpath
- endif
-
- elseif linestr =~# '^\(var\|const\|type\|func\)\>'
- break
-
- endif
- let line = line + 1
- endwhile
-
- " Append or remove the package import, as requested.
- if a:enabled
- if deleteline != -1
- call s:Error(qpath . ' already being imported')
- elseif appendline == -1
- call s:Error('No package line found')
- else
- if appendline == packageline
- call append(appendline + 0, '')
- call append(appendline + 1, 'import (')
- call append(appendline + 2, ')')
- let appendline += 2
- let linesdelta += 3
- let appendstr = qlocalpath
- let indentstr = 1
- endif
- call append(appendline, appendstr)
- execute appendline + 1
- if indentstr
- execute 'normal >>'
- endif
- let linesdelta += 1
- endif
- else
- if deleteline == -1
- call s:Error(qpath . ' not being imported')
- else
- execute deleteline . 'd'
- let linesdelta -= 1
-
- if getline(deleteline-1) =~# '^import\s\+(' && getline(deleteline) =~# '^)'
- " Delete empty import block
- let deleteline -= 1
- execute deleteline . "d"
- execute deleteline . "d"
- let linesdelta -= 2
- endif
-
- if getline(deleteline) == '' && getline(deleteline - 1) == ''
- " Delete spacing for removed line too.
- execute deleteline . "d"
- let linesdelta -= 1
- endif
- endif
- endif
-
- " Adjust view for any changes.
- let view.lnum += linesdelta
- let view.topline += linesdelta
- if view.topline < 0
- let view.topline = 0
- endif
-
- " Put buffer back where it was.
- call winrestview(view)
-
-endfunction
-
-function! s:Error(s)
- echohl Error | echo a:s | echohl None
-endfunction
-
-let b:did_ftplugin_go_import = 1
-
-" vim:ts=4:sw=4:et
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-17 22:35:02 +0000