" File              : functions.vim
" Author            : Jeff LANCE <email@jefflance.me>
" Date              : 15.04.2015
" Last Modified Date: 24.06.2020
" Last Modified By  : Jeff LANCE <email@jefflance.me>

"""""""""""""""""""""""""""""""""""""""""""""""""""""""
"  _____ _   _ _   _  ____ _____ ___ ___  _   _ ____
" |  ___| | | | \ | |/ ___|_   _|_ _/ _ \| \ | / ___|
" | |_  | | | |  \| | |     | |  | | | | |  \| \___ \
" |  _| | |_| | |\  | |___  | |  | | |_| | |\  |___) |
" |_|    \___/|_| \_|\____| |_| |___\___/|_| \_|____/
"
"""""""""""""""""""""""""""""""""""""""""""""""""""""""

" Rename current file
function! RenameFile()
  let old_name = expand('%')
  let new_name = input('New file name: ', expand('%'), 'file')
  if new_name != '' && new_name != old_name
    exec ':saveas ' . new_name
    exec ':silent !rm ' . old_name
    redraw!
  endif
endfunction


" Window movement shortcuts
" move to the window in the direction shown, or create a new window
function! WinMove(key)
  let t:curwin = winnr()
  exec "wincmd ".a:key
  if (t:curwin == winnr())
    if (match(a:key,'[jk]'))
      wincmd v
    else
      wincmd s
    endif
    exec "wincmd ".a:key
  endif
endfunction


" Count buffers
function! CountBuffers()
  let bufcount = 0
  for buf in getbufinfo()
    let bufcount += 1
  endfor
  return bufcount
endfunction


" Test if current buffer is netrw buffer
function! IsExplorerBuffer()
  if (getbufvar('%', '&filetype') == "netrw"
      \ || bufname('%') =~ 'NetrwTreeListing'
      \ || bufname('%') =~ '[defx] defxplorer-0')
    return 1
  endif
  return 0
endfunction


" Test if current buffer is empty
function! IsEmptyBuffer()
  if (bufname('%') == '')
    return 1
  endif
  return 0
endfunction


" Close current buffer
" If the last buffer is closed go back to Startify
function! BufClose()
  if (CountBuffers() == 1 || IsExplorerBuffer() || IsEmptyBuffer())
    bwipeout
    Startify
  else
    bwipeout
  endif
endfunction


" COC functions {{{
" -----

function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~# '\s'
endfunction

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  elseif (coc#rpc#ready())
    call CocActionAsync('doHover')
  else
    execute '!' . &keywordprg . " " . expand('<cword>')
  endif
endfunction

"function! s:show_documentation()
"  if (index(['vim','help'], &filetype) >= 0)
"    execute 'h '.expand('<cword>')
"  else
"    call CocAction('doHover')
"  endif
"endfunction

" -----
"  }}}


" vim:ft=vim