321 lines
8.9 KiB
VimL
321 lines
8.9 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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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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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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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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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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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#goos() . '_' . go#util#goarch()
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endfunction
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" System runs a shell command. It will reset the shell to /bin/sh for Unix-like
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" systems if it is executable.
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function! go#util#System(str, ...) abort
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let l:shell = &shell
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if !go#util#IsWin() && executable('/bin/sh')
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let &shell = '/bin/sh'
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endif
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try
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let l:output = call('system', [a:str] + a:000)
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return l:output
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finally
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let &shell = l:shell
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endtry
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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_snippet_case_type', "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. i.e: FooBar -> 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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function! go#util#AddTags(line1, line2, ...) abort
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" default is json
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let l:keys = ["json"]
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if a:0
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let l:keys = a:000
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endif
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let l:line1 = a:line1
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let l:line2 = a:line2
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" If we're inside a struct and just call this function let us add the tags
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" to all fields
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" TODO(arslan): I don't like using patterns. Check if we can move it to
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" `motion` and do it via AST based position
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let ln1 = searchpair('struct {', '', '}', 'bcnW')
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if ln1 == 0
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echon "vim-go: " | echohl ErrorMsg | echon "cursor is outside the struct" | echohl None
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return
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endif
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" searchpair only returns a single position
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let ln2 = search('}', "cnW")
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" if no range is given we apply for the whole struct
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if l:line1 == l:line2
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let l:line1 = ln1 + 1
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let l:line2 = ln2 - 1
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endif
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for line in range(l:line1, l:line2)
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" get the field name (word) that are not part of a commented line
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let l:matched = matchstr(getline(line), '\(\/\/.*\)\@<!\w\+')
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if empty(l:matched)
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continue
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endif
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let word = go#util#snippetcase(l:matched)
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let tags = map(copy(l:keys), 'printf("%s:%s", v:val,"\"'. word .'\"")')
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let updated_line = printf("%s `%s`", getline(line), join(tags, " "))
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" finally, update the line inplace
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call setline(line, updated_line)
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endfor
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endfunction
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" TODO(arslan): I couldn't parameterize the highlight types. Check if we can
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" simplify the following functions
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"
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" NOTE(arslan): echon doesn't work well with redraw, thus echo doesn't print
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" even though we order it. However echom seems to be work fine.
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function! go#util#EchoSuccess(msg)
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redraw | echohl Function | echom "vim-go: " . a:msg | echohl None
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endfunction
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function! go#util#EchoError(msg)
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redraw | echohl ErrorMsg | echom "vim-go: " . a:msg | echohl None
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endfunction
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function! go#util#EchoWarning(msg)
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redraw | echohl WarningMsg | echom "vim-go: " . a:msg | echohl None
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endfunction
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function! go#util#EchoProgress(msg)
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redraw | echohl Identifier | echom "vim-go: " . a:msg | echohl None
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endfunction
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function! go#util#EchoInfo(msg)
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redraw | echohl Debug | echom "vim-go: " . a:msg | echohl None
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endfunction
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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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" vim: sw=2 ts=2 et
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