196 lines
6 KiB
VimL
196 lines
6 KiB
VimL
" initial_go_path is used to store the initial GOPATH that was set when Vim
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" was started. It's used with :GoPathClear to restore the GOPATH when the user
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" changed it explicitly via :GoPath. Initially it's empty. It's being set when
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" :GoPath is used
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let s:initial_go_path = ""
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" GoPath sets or echos the current GOPATH. If no arguments are passed it
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" echoes the current GOPATH, if an argument is passed it replaces the current
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" GOPATH with it. If two double quotes are passed (the empty string in go),
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" it'll clear the GOPATH and will restore to the initial GOPATH.
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function! go#path#GoPath(...) abort
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" no argument, show GOPATH
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if len(a:000) == 0
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echo go#path#Default()
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return
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endif
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" we have an argument, replace GOPATH
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" clears the current manually set GOPATH and restores it to the
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" initial GOPATH, which was set when Vim was started.
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if len(a:000) == 1 && a:1 == '""'
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if !empty(s:initial_go_path)
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let $GOPATH = s:initial_go_path
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let s:initial_go_path = ""
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endif
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echon "vim-go: " | echohl Function | echon "GOPATH restored to ". $GOPATH | echohl None
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return
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endif
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echon "vim-go: " | echohl Function | echon "GOPATH changed to ". a:1 | echohl None
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let s:initial_go_path = $GOPATH
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let $GOPATH = a:1
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endfunction
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" Default returns the default GOPATH. If GOPATH is not set, it uses the
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" default GOPATH set starting with Go 1.8. This GOPATH can be retrieved via
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" 'go env GOPATH'
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function! go#path#Default() abort
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if $GOPATH == ""
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" use default GOPATH via go env
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return go#util#env("gopath")
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endif
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return $GOPATH
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endfunction
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" HasPath checks whether the given path exists in GOPATH environment variable
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" or not
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function! go#path#HasPath(path) abort
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let go_paths = split(go#path#Default(), go#util#PathListSep())
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let last_char = strlen(a:path) - 1
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" check cases of '/foo/bar/' and '/foo/bar'
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if a:path[last_char] == go#util#PathSep()
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let withSep = a:path
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let noSep = strpart(a:path, 0, last_char)
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else
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let withSep = a:path . go#util#PathSep()
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let noSep = a:path
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endif
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let hasA = index(go_paths, withSep) != -1
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let hasB = index(go_paths, noSep) != -1
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return hasA || hasB
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endfunction
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" Detect returns the current GOPATH. If a package manager is used, such as
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" Godeps, GB, it will modify the GOPATH so those directories take precedence
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" over the current GOPATH. It also detects diretories whose are outside
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" GOPATH.
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function! go#path#Detect() abort
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let gopath = go#path#Default()
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let current_dir = fnameescape(expand('%:p:h'))
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" TODO(arslan): this should be changed so folders or files should be
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" fetched from a customizable list. The user should define any new package
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" management tool by it's own.
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" src folders outside $GOPATH
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let src_roots = finddir("src", current_dir .";", -1)
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" for cases like GOPATH/src/foo/src/bar, pick up GOPATH/src instead of
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" GOPATH/src/foo/src
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let src_root = ""
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if len(src_roots) > 0
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let src_root = src_roots[-1]
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endif
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if !empty(src_root)
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let src_path = fnamemodify(src_root, ':p:h:h') . go#util#PathSep()
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" gb vendor plugin
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" (https://github.com/constabulary/gb/tree/master/cmd/gb-vendor)
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let gb_vendor_root = src_path . "vendor" . go#util#PathSep()
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if isdirectory(gb_vendor_root) && !go#path#HasPath(gb_vendor_root)
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let gopath = gb_vendor_root . go#util#PathListSep() . gopath
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endif
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if !go#path#HasPath(src_path)
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let gopath = src_path . go#util#PathListSep() . gopath
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endif
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endif
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" Godeps
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let godeps_root = finddir("Godeps", current_dir .";")
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if !empty(godeps_root)
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let godeps_path = join([fnamemodify(godeps_root, ':p:h:h'), "Godeps", "_workspace" ], go#util#PathSep())
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if !go#path#HasPath(godeps_path)
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let gopath = godeps_path . go#util#PathListSep() . gopath
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endif
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endif
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" Fix up the case where initial $GOPATH is empty,
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" and we end up with a trailing :
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let gopath = substitute(gopath, ":$", "", "")
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return gopath
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endfunction
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" BinPath returns the binary path of installed go tools.
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function! go#path#BinPath() abort
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let bin_path = ""
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" check if our global custom path is set, if not check if $GOBIN is set so
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" we can use it, otherwise use default GOPATH
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if exists("g:go_bin_path")
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let bin_path = g:go_bin_path
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elseif $GOBIN != ""
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let bin_path = $GOBIN
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else
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let go_paths = split(go#path#Default(), go#util#PathListSep())
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if len(go_paths) == 0
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return "" "nothing found
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endif
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let bin_path = expand(go_paths[0] . "/bin/")
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endif
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return bin_path
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endfunction
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" CheckBinPath checks whether the given binary exists or not and returns the
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" path of the binary. It returns an empty string doesn't exists.
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function! go#path#CheckBinPath(binpath) abort
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" remove whitespaces if user applied something like 'goimports '
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let binpath = substitute(a:binpath, '^\s*\(.\{-}\)\s*$', '\1', '')
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" save off original path
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let old_path = $PATH
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" check if we have an appropriate bin_path
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let go_bin_path = go#path#BinPath()
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if !empty(go_bin_path)
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" append our GOBIN and GOPATH paths and be sure they can be found there...
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" let us search in our GOBIN and GOPATH paths
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let $PATH = go_bin_path . go#util#PathListSep() . $PATH
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endif
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" if it's in PATH just return it
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if executable(binpath)
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if exists('*exepath')
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let binpath = exepath(binpath)
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endif
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let $PATH = old_path
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if go#util#IsUsingCygwinShell() == 1
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return go#path#CygwinPath(binpath)
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endif
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return binpath
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endif
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" just get the basename
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let basename = fnamemodify(binpath, ":t")
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if !executable(basename)
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call go#util#EchoError(printf("could not find '%s'. Run :GoInstallBinaries to fix it", basename))
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" restore back!
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let $PATH = old_path
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return ""
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endif
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let $PATH = old_path
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if go#util#IsUsingCygwinShell() == 1
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return go#path#CygwinPath(a:binpath)
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endif
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return go_bin_path . go#util#PathSep() . basename
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endfunction
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function! go#path#CygwinPath(path)
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return substitute(a:path, '\\', '/', "g")
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endfunction
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" vim: sw=2 ts=2 et
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