vim/vimrc.functions.vim

" TODO better name
function! GetStatusFrag(condition, colorname, conditionprefix, text) abort "{{{
  let l:frag='%#' . a:colorname . '#'
  let l:frag.=a:conditionprefix
  let l:frag.='%{(' . a:condition . ")?'" . a:text . "':''}"
  return l:frag
endfunction"}}}

function! CheckLineEnding() abort "{{{
  :normal $
  if getline('.')[col('.')-1] == ';' || getline('.')[col('.')-1] == ','
    :startinsert
  else
    :startinsert!
  endif
endfunction"}}}

" get name of syntax item
function! SyntaxItem() abort "{{{
  return synIDattr(synID(line('.'),col('.'),1),'name') . ' -> ' . synIDattr(synIDtrans(synID(line('.'),col('.'),1)), 'name' )
endfunction
nnoremap <space>p :echom SyntaxItem()<CR>"}}}

" devdocs DD
" https://gist.github.com/romainl/8d3b73428b4366f75a19be2dad2f0987#file-devdocs-vim
function! s:Get_env() abort "{{{
    if has('win64') || has('win32') || has('win16')
        return 'WINDOWS'
    else
        return toupper(substitute(system('uname'), '\n', '', ''))
    endif
endfunction
" What command to use on what system
let s:cmds = {'DARWIN': 'open', 'LINUX': 'qutebrowser', 'WINDOWS': 'start'}

" Build the URL stub
let s:stub = s:cmds[<SID>Get_env()] . " 'http://devdocs.io/?q="

command! -nargs=* DD silent! call system(len(split(<q-args>, ' ')) == 0 ?
            \ s:stub . &ft . ' ' . expand('<cword>') . "'" : len(split(<q-args>, ' ')) == 1 ?
            \ s:stub . &ft . ' ' . <q-args> . "'" : s:stub . <q-args> . "'")
"}}}

" use ranger as file manager
if !exists('*RangerExplorer') "{{{
	function RangerExplorer() abort
			exec 'silent !ranger --choosefile=/tmp/vim_ranger_current_file ' . expand('%:p:h')
			if filereadable('/tmp/vim_ranger_current_file')
					exec 'edit ' . system('cat /tmp/vim_ranger_current_file')
					call system('rm /tmp/vim_ranger_current_file')
			endif
			redraw!
	endfun
	map <space>ra :call RangerExplorer()<CR>
endif"}}}

function! SetColorColumn()"{{{
  if &buftype == ''
    setlocal colorcolumn=80
  endif
endfunction
"}}}

function! GetLinterStatus(key) abort "{{{
  let l:linter = ale#statusline#Count(bufnr(''))

  return l:linter[a:key]
endfunction

"}}}

" old linter status function
function! LinterStatus() abort "{{{
  let l:counts = ale#statusline#Count(bufnr(''))

  let l:all_errors = l:counts.error + l:counts.style_error
  let l:all_non_errors = l:counts.total - l:all_errors

  return l:counts.total == 0 ? 'OK' : printf('%dW %dE', l:all_non_errors, l:all_errors)
endfunction
"}}}

" Shell command
" based on
" http://vim.wikia.com/wiki/VimTip1599
command! -complete=shellcmd -nargs=+ Shell call s:RunShellCommand(<q-args>)
let g:shell_scratch_buffer_nr = -1

function! s:RunShellCommand(cmdline) abort
"{{{
  let l:expanded_cmdline = a:cmdline 
  for l:part in split(a:cmdline, ' ')
     if l:part[0] =~ '\v[%#<]'
        let l:expanded_part = fnameescape(expand(l:part))
        let l:expanded_cmdline = substitute(l:expanded_cmdline, l:part, l:expanded_part, '')
     endif
  endfor

  if g:shell_scratch_buffer_nr > -1
    let l:win_nr = bufwinnr(g:shell_scratch_buffer_nr)
    if l:win_nr < 0
      execute 'bdelete' g:shell_scratch_buffer_nr
      top new
      let g:shell_scratch_buffer_nr = bufnr('%')
    else
      execute l:win_nr. ' wincmd w'
      setlocal modifiable
      %delete _
    endif
  else
    top new
    let g:shell_scratch_buffer_nr = bufnr('%')
  endif

  setlocal buftype=nofile bufhidden=wipe nobuflisted noswapfile nowrap
  nnoremap <buffer> q :bdelete<CR> 
  augroup ResetShellBufferNr
    autocmd! * <buffer>
    autocmd BufUnload <buffer> let g:shell_scratch_buffer_nr = -1
  augroup END

  " call setline(1, 'You entered:    ' . a:cmdline)
  " call setline(2, 'Expanded Form:  ' .l:expanded_cmdline)
  " call setline(3,substitute(getline(2),'.','=','g'))
  execute '$read !'. l:expanded_cmdline
  1

  setlocal nomodifiable
  if !exists('b:shell_line_count')
    let b:shell_line_count = line('$')
    if b:shell_line_count > 25
      let b:shell_line_count = 20
    endif
    execute 'resize' b:shell_line_count + 1
  endif

  wincmd p
endfunction
"}}}

" https://stackoverflow.com/a/40195855
function! SaveAndExecutePython()
    " SOURCE [reusable window]: https://github.com/fatih/vim-go/blob/master/autoload/go/ui.vim

    " save and reload current file
    silent execute "update | edit"

    " get file path of current file
    let s:current_buffer_file_path = expand("%")

    let s:output_buffer_name = "Python"
    let s:output_buffer_filetype = "output"

    " reuse existing buffer window if it exists otherwise create a new one
    if !exists("s:buf_nr") || !bufexists(s:buf_nr)
        silent execute 'top new ' . s:output_buffer_name
        let s:buf_nr = bufnr('%')
    elseif bufwinnr(s:buf_nr) == -1
        silent execute 'top new'
        silent execute s:buf_nr . 'buffer'
    elseif bufwinnr(s:buf_nr) != bufwinnr('%')
        silent execute bufwinnr(s:buf_nr) . 'wincmd w'
    endif

    silent execute "setlocal filetype=" . s:output_buffer_filetype
    setlocal bufhidden=delete
    setlocal buftype=nofile
    setlocal noswapfile
    setlocal nobuflisted
    setlocal winfixheight
    setlocal cursorline " make it easy to distinguish
    setlocal nonumber
    setlocal norelativenumber
    setlocal showbreak=""

    nnoremap <buffer> q :bdelete<CR> 

    " clear the buffer
    setlocal noreadonly
    " setlocal modifiable
    %delete _

    " add the console output
    silent execute ".!python " . shellescape(s:current_buffer_file_path, 1)

    " resize window to content length
    " Note: This is annoying because if you print a lot of lines then your code buffer is forced to a height of one line every time you run this function.
    "       However without this line the buffer starts off as a default size and if you resize the buffer then it keeps that custom size after repeated runs of this function.
    "       But if you close the output buffer then it returns to using the default size when its recreated
    "execute 'resize' . line('$')

    " make the buffer non modifiable
    setlocal readonly
    " setlocal nomodifiable
endfunction

" vim: foldmethod=marker