progrock.vim

" add visual indication of progress in a buffer to the status bar. To use:
" set statusline=%{ProgRock()}REST_OF_YOUR_STATUS_LINE HERE}
" for example:
" set statusline=%{ProgRock()}%{coc#status()}%{get(b:,'coc_current_function','')}
function! ProgRock()
    let magic_width_number = 30
    let width = winwidth(0)
    let lcur = line('.')
    let lend = line('$')
    let full = max([width - magic_width_number, 3])
    let cur_render = float2nr((lcur / (lend + 0.0)) * full)
    let rem_render = (full - cur_render) - 1
    return '|' . RepeatStr('_', cur_render) . RepeatStr(' ', rem_render) . '|'
endfunction

function RepeatStr(str, n)
    let res = ''
    for _ in range(max([a:n, 0]))
        let res .= a:str
    endfor
    return res
endfunction