Vim Powerline-like status line without the need of any plugin

.vimrc

" Statusline (requires Powerline font)
set statusline=
set statusline+=%(%{'help'!=&filetype?bufnr('%'):''}\ \ %)
set statusline+=%< " Where to truncate line
set statusline+=%f " Path to the file in the buffer, as typed or relative to current directory
set statusline+=%{&modified?'\ +':''}
set statusline+=%{&readonly?'\ ':''}
set statusline+=%= " Separation point between left and right aligned items
set statusline+=\ %{''!=#&filetype?&filetype:'none'}
set statusline+=%(\ %{(&bomb\|\|'^$\|utf-8'!~#&fileencoding?'\ '.&fileencoding.(&bomb?'-bom':''):'')
  \.('unix'!=#&fileformat?'\ '.&fileformat:'')}%)
set statusline+=%(\ \ %{&modifiable?(&expandtab?'et\ ':'noet\ ').&shiftwidth:''}%)
set statusline+=\ 
set statusline+=\ %2v " Virtual column number
set statusline+=\ %3p%% " Percentage through file in lines as in |CTRL-G|

" ------------------------ 8< ------------------------

" Statusline (requires Powerline font, with highlight groups using Solarized theme)
set statusline=
set statusline+=%(%{'help'!=&filetype?bufnr('%'):''}\ \ %)
set statusline+=%< " Where to truncate line
set statusline+=%f " Path to the file in the buffer, as typed or relative to current directory
set statusline+=%{&modified?'\ +':''}
set statusline+=%{&readonly?'\ ':''}
set statusline+=\ %1*
set statusline+=%= " Separation point between left and right aligned items.
set statusline+=\ %{''!=#&filetype?&filetype:'none'}
set statusline+=%(\ %{(&bomb\|\|'^$\|utf-8'!~#&fileencoding?'\ '.&fileencoding.(&bomb?'-bom':''):'')
  \.('unix'!=#&fileformat?'\ '.&fileformat:'')}%)
set statusline+=%(\ \ %{&modifiable?(&expandtab?'et\ ':'noet\ ').&shiftwidth:''}%)
set statusline+=\ %*
set statusline+=\ %2v " Virtual column number.
set statusline+=\ %3p%% " Percentage through file in lines as in |CTRL-G|

" Logic for customizing the User1 highlight group is the following
" - fg = StatusLine fg (if StatusLine colors are reverse)
" - bg = StatusLineNC bg (if StatusLineNC colors are reverse)
hi StatusLine term=reverse cterm=reverse gui=reverse ctermfg=14 ctermbg=8 guifg=#93a1a1 guibg=#002b36
hi StatusLineNC term=reverse cterm=reverse gui=reverse ctermfg=11 ctermbg=0 guifg=#657b83 guibg=#073642
hi User1 ctermfg=14 ctermbg=0 guifg=#93a1a1 guibg=#073642