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" <https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html#variables>
let s:defaults = {
\ 'XDG_CACHE_HOME': '~/.cache',
\ 'XDG_CONFIG_HOME': '~/.config',
\ 'XDG_CONFIG_DIRS': '/etc/xdg',
\ 'XDG_DATA_HOME': '~/.local/share',
\ 'XDG_DATA_DIRS': '/usr/local/share/:/usr/share/',
\}
function! s:Get(name) abort
let name = a:name
let env = environ()
if has_key(env, name) && strlen(env[name]) > 0
return env[name]
elseif has_key(s:defaults, name)
return s:defaults[name]
else
return ''
endif
endfunction
function! s:Absolute(path) abort
return a:path !=# '^[/~]'
endfunction
function! xdg#CacheDir(name) abort
let name = a:name
let home = s:Get('XDG_CACHE_HOME')
if !s:Absolute(home)
return
endif
return join([home, name], '/')
endfunction
function! xdg#ConfigDirs(name) abort
let name = a:name
let home = s:Get('XDG_CONFIG_HOME')
let dirs = split(s:Get('XDG_CONFIG_DIRS'), ':')
return map(
\ filter(insert(dirs, home), 's:Absolute(v:val)')
\,'join([v:val, name], "/")'
\)
endfunction
function! xdg#DataDirs(name) abort
let name = a:name
let home = s:Get('XDG_DATA_HOME')
let dirs = split(s:Get('XDG_DATA_DIRS'), ':')
return map(
\ filter(insert(dirs, home), 's:Absolute(v:val)')
\,'join([v:val, name], "/")'
\)
endfunction
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