Add log api

autoload/SpaceVim/api/logger.vim

@@ -0,0 +1,60 @@
+
+let s:self = {
+            \ 'name' : '',
+            \ 'silent' : 1,
+            \ 'file' : '',
+            \ }
+
+function! SpaceVim#api#logger#get() abort
+    return deepcopy(s:self)
+endfunction
+
+
+function! s:self.error(msg) abort
+  let time = strftime('%H:%M:%S')
+  let log = '[ ' . self.name . ' ] [' . time . '] [ Error ] ' . a:msg
+  if !self.silent
+      echoerr log
+  endif
+  call self.write(log)
+endfunction
+
+function! s:self.write(msg) abort
+  if !isdirectory(fnamemodify(self.file, ':p:h'))
+    call mkdir(expand(fnamemodify(self.file, ':p:h')), 'p')
+  endif
+  let flags = filewritable(self.file) ? 'a' : ''
+  call writefile([a:msg], self.file, flags)
+endfunction
+
+function! s:self.warn(msg) abort
+  let time = strftime('%H:%M:%S')
+  let log = '[ ' . self.name . ' ] [' . time . '] [ Warn ] ' . a:msg
+  if !self.silent
+      echohl WarningMsg
+      echom log
+      echohl None
+  endif
+  call self.write(log)
+endfunction
+
+function! s:self.info(msg) abort
+  let time = strftime('%H:%M:%S')
+  let log = '[ ' . self.name . ' ] [' . time . '] [ Info ] ' . a:msg
+  if !self.silent
+      echom log
+  endif
+  call self.write(log)
+endfunction
+
+function! s:self.set_name(name) abort
+    let self.name = a:name
+endfunction
+
+function! s:self.get_name() abort
+    return self.name
+endfunction
+
+function! s:self.set_file(file) abort
+    let self.file = a:file
+endfunction