vimrc/sources_non_forked/vim-go/autoload/go/util.vim
2017-02-11 14:01:38 +01:00

321 lines
8.9 KiB
VimL

" PathSep returns the appropriate OS specific path separator.
function! go#util#PathSep() abort
if go#util#IsWin()
return '\'
endif
return '/'
endfunction
" PathListSep returns the appropriate OS specific path list separator.
function! go#util#PathListSep() abort
if go#util#IsWin()
return ";"
endif
return ":"
endfunction
" LineEnding returns the correct line ending, based on the current fileformat
function! go#util#LineEnding() abort
if &fileformat == 'dos'
return "\r\n"
elseif &fileformat == 'mac'
return "\r"
endif
return "\n"
endfunction
" Join joins any number of path elements into a single path, adding a
" Separator if necessary and returns the result
function! go#util#Join(...) abort
return join(a:000, go#util#PathSep())
endfunction
" IsWin returns 1 if current OS is Windows or 0 otherwise
function! go#util#IsWin() abort
let win = ['win16', 'win32', 'win64', 'win95']
for w in win
if (has(w))
return 1
endif
endfor
return 0
endfunction
function! go#util#has_job() abort
" job was introduced in 7.4.xxx however there are multiple bug fixes and one
" of the latest is 8.0.0087 which is required for a stable async API.
return has('job') && has("patch-8.0.0087")
endfunction
let s:env_cache = {}
" env returns the go environment variable for the given key. Where key can be
" GOARCH, GOOS, GOROOT, etc... It caches the result and returns the cached
" version.
function! go#util#env(key) abort
let l:key = tolower(a:key)
if has_key(s:env_cache, l:key)
return s:env_cache[l:key]
endif
if executable('go')
let l:var = call('go#util#'.l:key, [])
if go#util#ShellError() != 0
call go#util#EchoError(printf("'go env %s' failed", toupper(l:key)))
return ''
endif
else
let l:var = eval("$".toupper(a:key))
endif
let s:env_cache[l:key] = l:var
return l:var
endfunction
function! go#util#goarch() abort
return substitute(go#util#System('go env GOARCH'), '\n', '', 'g')
endfunction
function! go#util#goos() abort
return substitute(go#util#System('go env GOOS'), '\n', '', 'g')
endfunction
function! go#util#goroot() abort
return substitute(go#util#System('go env GOROOT'), '\n', '', 'g')
endfunction
function! go#util#gopath() abort
return substitute(go#util#System('go env GOPATH'), '\n', '', 'g')
endfunction
function! go#util#osarch() abort
return go#util#goos() . '_' . go#util#goarch()
endfunction
" System runs a shell command. It will reset the shell to /bin/sh for Unix-like
" systems if it is executable.
function! go#util#System(str, ...) abort
let l:shell = &shell
if !go#util#IsWin() && executable('/bin/sh')
let &shell = '/bin/sh'
endif
try
let l:output = call('system', [a:str] + a:000)
return l:output
finally
let &shell = l:shell
endtry
endfunction
function! go#util#ShellError() abort
return v:shell_error
endfunction
" StripPath strips the path's last character if it's a path separator.
" example: '/foo/bar/' -> '/foo/bar'
function! go#util#StripPathSep(path) abort
let last_char = strlen(a:path) - 1
if a:path[last_char] == go#util#PathSep()
return strpart(a:path, 0, last_char)
endif
return a:path
endfunction
" StripTrailingSlash strips the trailing slash from the given path list.
" example: ['/foo/bar/'] -> ['/foo/bar']
function! go#util#StripTrailingSlash(paths) abort
return map(copy(a:paths), 'go#util#StripPathSep(v:val)')
endfunction
" Shelljoin returns a shell-safe string representation of arglist. The
" {special} argument of shellescape() may optionally be passed.
function! go#util#Shelljoin(arglist, ...) abort
try
let ssl_save = &shellslash
set noshellslash
if a:0
return join(map(copy(a:arglist), 'shellescape(v:val, ' . a:1 . ')'), ' ')
endif
return join(map(copy(a:arglist), 'shellescape(v:val)'), ' ')
finally
let &shellslash = ssl_save
endtry
endfunction
fu! go#util#Shellescape(arg)
try
let ssl_save = &shellslash
set noshellslash
return shellescape(a:arg)
finally
let &shellslash = ssl_save
endtry
endf
" Shelllist returns a shell-safe representation of the items in the given
" arglist. The {special} argument of shellescape() may optionally be passed.
function! go#util#Shelllist(arglist, ...) abort
try
let ssl_save = &shellslash
set noshellslash
if a:0
return map(copy(a:arglist), 'shellescape(v:val, ' . a:1 . ')')
endif
return map(copy(a:arglist), 'shellescape(v:val)')
finally
let &shellslash = ssl_save
endtry
endfunction
" Returns the byte offset for line and column
function! go#util#Offset(line, col) abort
if &encoding != 'utf-8'
let sep = go#util#LineEnding()
let buf = a:line == 1 ? '' : (join(getline(1, a:line-1), sep) . sep)
let buf .= a:col == 1 ? '' : getline('.')[:a:col-2]
return len(iconv(buf, &encoding, 'utf-8'))
endif
return line2byte(a:line) + (a:col-2)
endfunction
"
" Returns the byte offset for the cursor
function! go#util#OffsetCursor() abort
return go#util#Offset(line('.'), col('.'))
endfunction
" Windo is like the built-in :windo, only it returns to the window the command
" was issued from
function! go#util#Windo(command) abort
let s:currentWindow = winnr()
try
execute "windo " . a:command
finally
execute s:currentWindow. "wincmd w"
unlet s:currentWindow
endtry
endfunction
" snippetcase converts the given word to given preferred snippet setting type
" case.
function! go#util#snippetcase(word) abort
let l:snippet_case = get(g:, 'go_snippet_case_type', "snakecase")
if l:snippet_case == "snakecase"
return go#util#snakecase(a:word)
elseif l:snippet_case == "camelcase"
return go#util#camelcase(a:word)
else
return a:word " do nothing
endif
endfunction
" snakecase converts a string to snake case. i.e: FooBar -> foo_bar
" Copied from tpope/vim-abolish
function! go#util#snakecase(word) abort
let word = substitute(a:word,'::','/','g')
let word = substitute(word,'\(\u\+\)\(\u\l\)','\1_\2','g')
let word = substitute(word,'\(\l\|\d\)\(\u\)','\1_\2','g')
let word = substitute(word,'[.-]','_','g')
let word = tolower(word)
return word
endfunction
" camelcase converts a string to camel case. i.e: FooBar -> fooBar
" Copied from tpope/vim-abolish
function! go#util#camelcase(word) abort
let word = substitute(a:word, '-', '_', 'g')
if word !~# '_' && word =~# '\l'
return substitute(word,'^.','\l&','')
else
return substitute(word,'\C\(_\)\=\(.\)','\=submatch(1)==""?tolower(submatch(2)) : toupper(submatch(2))','g')
endif
endfunction
function! go#util#AddTags(line1, line2, ...) abort
" default is json
let l:keys = ["json"]
if a:0
let l:keys = a:000
endif
let l:line1 = a:line1
let l:line2 = a:line2
" If we're inside a struct and just call this function let us add the tags
" to all fields
" TODO(arslan): I don't like using patterns. Check if we can move it to
" `motion` and do it via AST based position
let ln1 = searchpair('struct {', '', '}', 'bcnW')
if ln1 == 0
echon "vim-go: " | echohl ErrorMsg | echon "cursor is outside the struct" | echohl None
return
endif
" searchpair only returns a single position
let ln2 = search('}', "cnW")
" if no range is given we apply for the whole struct
if l:line1 == l:line2
let l:line1 = ln1 + 1
let l:line2 = ln2 - 1
endif
for line in range(l:line1, l:line2)
" get the field name (word) that are not part of a commented line
let l:matched = matchstr(getline(line), '\(\/\/.*\)\@<!\w\+')
if empty(l:matched)
continue
endif
let word = go#util#snippetcase(l:matched)
let tags = map(copy(l:keys), 'printf("%s:%s", v:val,"\"'. word .'\"")')
let updated_line = printf("%s `%s`", getline(line), join(tags, " "))
" finally, update the line inplace
call setline(line, updated_line)
endfor
endfunction
" TODO(arslan): I couldn't parameterize the highlight types. Check if we can
" simplify the following functions
"
" NOTE(arslan): echon doesn't work well with redraw, thus echo doesn't print
" even though we order it. However echom seems to be work fine.
function! go#util#EchoSuccess(msg)
redraw | echohl Function | echom "vim-go: " . a:msg | echohl None
endfunction
function! go#util#EchoError(msg)
redraw | echohl ErrorMsg | echom "vim-go: " . a:msg | echohl None
endfunction
function! go#util#EchoWarning(msg)
redraw | echohl WarningMsg | echom "vim-go: " . a:msg | echohl None
endfunction
function! go#util#EchoProgress(msg)
redraw | echohl Identifier | echom "vim-go: " . a:msg | echohl None
endfunction
function! go#util#EchoInfo(msg)
redraw | echohl Debug | echom "vim-go: " . a:msg | echohl None
endfunction
function! go#util#GetLines()
let buf = getline(1, '$')
if &encoding != 'utf-8'
let buf = map(buf, 'iconv(v:val, &encoding, "utf-8")')
endif
if &l:fileformat == 'dos'
" XXX: line2byte() depend on 'fileformat' option.
" so if fileformat is 'dos', 'buf' must include '\r'.
let buf = map(buf, 'v:val."\r"')
endif
return buf
endfunction
" vim: sw=2 ts=2 et