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399 lines
11 KiB
VimL
399 lines
11 KiB
VimL
" PathSep returns the appropriate OS specific path separator.
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function! go#util#PathSep() abort
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if go#util#IsWin()
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return '\'
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endif
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return '/'
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endfunction
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" PathListSep returns the appropriate OS specific path list separator.
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function! go#util#PathListSep() abort
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if go#util#IsWin()
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return ";"
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endif
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return ":"
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endfunction
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" LineEnding returns the correct line ending, based on the current fileformat
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function! go#util#LineEnding() abort
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if &fileformat == 'dos'
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return "\r\n"
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elseif &fileformat == 'mac'
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return "\r"
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endif
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return "\n"
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endfunction
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" Join joins any number of path elements into a single path, adding a
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" Separator if necessary and returns the result
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function! go#util#Join(...) abort
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return join(a:000, go#util#PathSep())
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endfunction
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" IsWin returns 1 if current OS is Windows or 0 otherwise
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function! go#util#IsWin() abort
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let win = ['win16', 'win32', 'win64', 'win95']
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for w in win
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if (has(w))
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return 1
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endif
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endfor
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return 0
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endfunction
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" IsMac returns 1 if current OS is macOS or 0 otherwise.
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function! go#util#IsMac() abort
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return has('mac') ||
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\ has('macunix') ||
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\ has('gui_macvim') ||
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\ go#util#System('uname') =~? '^darwin'
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endfunction
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" Checks if using:
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" 1) Windows system,
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" 2) And has cygpath executable,
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" 3) And uses *sh* as 'shell'
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function! go#util#IsUsingCygwinShell()
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return go#util#IsWin() && executable('cygpath') && &shell =~ '.*sh.*'
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endfunction
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function! go#util#has_job() abort
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" job was introduced in 7.4.xxx however there are multiple bug fixes and one
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" of the latest is 8.0.0087 which is required for a stable async API.
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return has('job') && has("patch-8.0.0087")
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endfunction
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let s:env_cache = {}
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" env returns the go environment variable for the given key. Where key can be
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" GOARCH, GOOS, GOROOT, etc... It caches the result and returns the cached
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" version.
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function! go#util#env(key) abort
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let l:key = tolower(a:key)
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if has_key(s:env_cache, l:key)
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return s:env_cache[l:key]
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endif
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if executable('go')
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let l:var = call('go#util#'.l:key, [])
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if go#util#ShellError() != 0
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call go#util#EchoError(printf("'go env %s' failed", toupper(l:key)))
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return ''
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endif
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else
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let l:var = eval("$".toupper(a:key))
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endif
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let s:env_cache[l:key] = l:var
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return l:var
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endfunction
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" goarch returns 'go env GOARCH'. This is an internal function and shouldn't
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" be used. Instead use 'go#util#env("goarch")'
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function! go#util#goarch() abort
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return substitute(go#util#System('go env GOARCH'), '\n', '', 'g')
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endfunction
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" goos returns 'go env GOOS'. This is an internal function and shouldn't
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" be used. Instead use 'go#util#env("goos")'
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function! go#util#goos() abort
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return substitute(go#util#System('go env GOOS'), '\n', '', 'g')
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endfunction
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" goroot returns 'go env GOROOT'. This is an internal function and shouldn't
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" be used. Instead use 'go#util#env("goroot")'
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function! go#util#goroot() abort
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return substitute(go#util#System('go env GOROOT'), '\n', '', 'g')
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endfunction
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" gopath returns 'go env GOPATH'. This is an internal function and shouldn't
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" be used. Instead use 'go#util#env("gopath")'
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function! go#util#gopath() abort
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return substitute(go#util#System('go env GOPATH'), '\n', '', 'g')
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endfunction
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function! go#util#osarch() abort
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return go#util#env("goos") . '_' . go#util#env("goarch")
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endfunction
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" Run a shell command.
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"
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" It will temporary set the shell to /bin/sh for Unix-like systems if possible,
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" so that we always use a standard POSIX-compatible Bourne shell (and not e.g.
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" csh, fish, etc.) See #988 and #1276.
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function! s:system(cmd, ...) abort
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" Preserve original shell and shellredir values
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let l:shell = &shell
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let l:shellredir = &shellredir
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if !go#util#IsWin() && executable('/bin/sh')
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set shell=/bin/sh shellredir=>%s\ 2>&1
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endif
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try
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return call('system', [a:cmd] + a:000)
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finally
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" Restore original values
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let &shell = l:shell
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let &shellredir = l:shellredir
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endtry
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endfunction
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" System runs a shell command "str". Every arguments after "str" is passed to
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" stdin.
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function! go#util#System(str, ...) abort
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return call('s:system', [a:str] + a:000)
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endfunction
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" Exec runs a shell command "cmd", which must be a list, one argument per item.
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" Every list entry will be automatically shell-escaped
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" Every other argument is passed to stdin.
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function! go#util#Exec(cmd, ...) abort
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if len(a:cmd) == 0
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call go#util#EchoError("go#util#Exec() called with empty a:cmd")
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return
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endif
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" CheckBinPath will show a warning for us.
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let l:bin = go#path#CheckBinPath(a:cmd[0])
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if empty(l:bin)
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return ["", 1]
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endif
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let l:out = call('s:system', [go#util#Shelljoin([l:bin] + a:cmd[1:])] + a:000)
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return [l:out, go#util#ShellError()]
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endfunction
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function! go#util#ShellError() abort
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return v:shell_error
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endfunction
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" StripPath strips the path's last character if it's a path separator.
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" example: '/foo/bar/' -> '/foo/bar'
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function! go#util#StripPathSep(path) abort
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let last_char = strlen(a:path) - 1
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if a:path[last_char] == go#util#PathSep()
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return strpart(a:path, 0, last_char)
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endif
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return a:path
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endfunction
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" StripTrailingSlash strips the trailing slash from the given path list.
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" example: ['/foo/bar/'] -> ['/foo/bar']
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function! go#util#StripTrailingSlash(paths) abort
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return map(copy(a:paths), 'go#util#StripPathSep(v:val)')
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endfunction
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" Shelljoin returns a shell-safe string representation of arglist. The
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" {special} argument of shellescape() may optionally be passed.
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function! go#util#Shelljoin(arglist, ...) abort
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try
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let ssl_save = &shellslash
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set noshellslash
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if a:0
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return join(map(copy(a:arglist), 'shellescape(v:val, ' . a:1 . ')'), ' ')
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endif
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return join(map(copy(a:arglist), 'shellescape(v:val)'), ' ')
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finally
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let &shellslash = ssl_save
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endtry
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endfunction
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fu! go#util#Shellescape(arg)
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try
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let ssl_save = &shellslash
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set noshellslash
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return shellescape(a:arg)
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finally
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let &shellslash = ssl_save
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endtry
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endf
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" Shelllist returns a shell-safe representation of the items in the given
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" arglist. The {special} argument of shellescape() may optionally be passed.
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function! go#util#Shelllist(arglist, ...) abort
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try
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let ssl_save = &shellslash
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set noshellslash
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if a:0
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return map(copy(a:arglist), 'shellescape(v:val, ' . a:1 . ')')
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endif
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return map(copy(a:arglist), 'shellescape(v:val)')
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finally
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let &shellslash = ssl_save
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endtry
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endfunction
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" Returns the byte offset for line and column
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function! go#util#Offset(line, col) abort
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if &encoding != 'utf-8'
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let sep = go#util#LineEnding()
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let buf = a:line == 1 ? '' : (join(getline(1, a:line-1), sep) . sep)
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let buf .= a:col == 1 ? '' : getline('.')[:a:col-2]
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return len(iconv(buf, &encoding, 'utf-8'))
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endif
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return line2byte(a:line) + (a:col-2)
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endfunction
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"
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" Returns the byte offset for the cursor
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function! go#util#OffsetCursor() abort
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return go#util#Offset(line('.'), col('.'))
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endfunction
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" Windo is like the built-in :windo, only it returns to the window the command
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" was issued from
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function! go#util#Windo(command) abort
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let s:currentWindow = winnr()
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try
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execute "windo " . a:command
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finally
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execute s:currentWindow. "wincmd w"
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unlet s:currentWindow
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endtry
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endfunction
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" snippetcase converts the given word to given preferred snippet setting type
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" case.
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function! go#util#snippetcase(word) abort
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let l:snippet_case = get(g:, 'go_addtags_transform', "snakecase")
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if l:snippet_case == "snakecase"
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return go#util#snakecase(a:word)
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elseif l:snippet_case == "camelcase"
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return go#util#camelcase(a:word)
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else
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return a:word " do nothing
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endif
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endfunction
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" snakecase converts a string to snake case. i.e: FooBar -> foo_bar
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" Copied from tpope/vim-abolish
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function! go#util#snakecase(word) abort
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let word = substitute(a:word, '::', '/', 'g')
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let word = substitute(word, '\(\u\+\)\(\u\l\)', '\1_\2', 'g')
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let word = substitute(word, '\(\l\|\d\)\(\u\)', '\1_\2', 'g')
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let word = substitute(word, '[.-]', '_', 'g')
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let word = tolower(word)
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return word
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endfunction
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" camelcase converts a string to camel case. e.g. FooBar or foo_bar will become
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" fooBar.
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" Copied from tpope/vim-abolish.
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function! go#util#camelcase(word) abort
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let word = substitute(a:word, '-', '_', 'g')
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if word !~# '_' && word =~# '\l'
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return substitute(word, '^.', '\l&', '')
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else
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return substitute(word, '\C\(_\)\=\(.\)', '\=submatch(1)==""?tolower(submatch(2)) : toupper(submatch(2))','g')
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endif
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endfunction
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" pascalcase converts a string to 'PascalCase'. e.g. fooBar or foo_bar will
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" become FooBar.
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function! go#util#pascalcase(word) abort
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let word = go#util#camelcase(a:word)
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return toupper(word[0]) . word[1:]
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endfunction
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" Echo a message to the screen and highlight it with the group in a:hi.
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"
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" The message can be a list or string; every line with be :echomsg'd separately.
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function! s:echo(msg, hi)
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let l:msg = []
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if type(a:msg) != type([])
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let l:msg = split(a:msg, "\n")
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else
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let l:msg = a:msg
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endif
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" Tabs display as ^I or <09>, so manually expand them.
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let l:msg = map(l:msg, 'substitute(v:val, "\t", " ", "")')
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exe 'echohl ' . a:hi
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for line in l:msg
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echom "vim-go: " . line
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endfor
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echohl None
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endfunction
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function! go#util#EchoSuccess(msg)
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call s:echo(a:msg, 'Function')
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endfunction
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function! go#util#EchoError(msg)
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call s:echo(a:msg, 'ErrorMsg')
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endfunction
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function! go#util#EchoWarning(msg)
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call s:echo(a:msg, 'WarningMsg')
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endfunction
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function! go#util#EchoProgress(msg)
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call s:echo(a:msg, 'Identifier')
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endfunction
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function! go#util#EchoInfo(msg)
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call s:echo(a:msg, 'Debug')
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endfunction
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" Get all lines in the buffer as a a list.
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function! go#util#GetLines()
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let buf = getline(1, '$')
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if &encoding != 'utf-8'
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let buf = map(buf, 'iconv(v:val, &encoding, "utf-8")')
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endif
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if &l:fileformat == 'dos'
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" XXX: line2byte() depend on 'fileformat' option.
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" so if fileformat is 'dos', 'buf' must include '\r'.
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let buf = map(buf, 'v:val."\r"')
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endif
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return buf
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endfunction
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" Convert the current buffer to the "archive" format of
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" golang.org/x/tools/go/buildutil:
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" https://godoc.org/golang.org/x/tools/go/buildutil#ParseOverlayArchive
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"
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" > The archive consists of a series of files. Each file consists of a name, a
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" > decimal file size and the file contents, separated by newlinews. No newline
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" > follows after the file contents.
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function! go#util#archive()
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let l:buffer = join(go#util#GetLines(), "\n")
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return expand("%:p:gs!\\!/!") . "\n" . strlen(l:buffer) . "\n" . l:buffer
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endfunction
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" Make a named temporary directory which starts with "prefix".
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"
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" Unfortunately Vim's tempname() is not portable enough across various systems;
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" see: https://github.com/mattn/vim-go/pull/3#discussion_r138084911
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function! go#util#tempdir(prefix) abort
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" See :help tempfile
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if go#util#IsWin()
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let l:dirs = [$TMP, $TEMP, 'c:\tmp', 'c:\temp']
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else
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let l:dirs = [$TMPDIR, '/tmp', './', $HOME]
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endif
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let l:dir = ''
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for l:d in dirs
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if !empty(l:d) && filewritable(l:d) == 2
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let l:dir = l:d
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break
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endif
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endfor
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if l:dir == ''
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echoerr 'Unable to find directory to store temporary directory in'
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return
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endif
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" Not great randomness, but "good enough" for our purpose here.
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let l:rnd = sha256(printf('%s%s', localtime(), fnamemodify(bufname(''), ":p")))
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let l:tmp = printf("%s/%s%s", l:dir, a:prefix, l:rnd)
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call mkdir(l:tmp, 'p', 0700)
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return l:tmp
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endfunction
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" vim: sw=2 ts=2 et
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