Open url in vim

open.vim

" ============================================================================
" Description: Open url under cursor or git repository of a module
" Author: Qiming Zhao <chemzqm@gmail.com>
" Licence: Vim licence
" Version: 0.1
" Last Modified:  January 16, 2016
" ============================================================================

if exists('did_open_loaded') || v:version < 700
  finish
endif
let did_open_loaded = 1

function! s:Open()
  let line = getline('.')
  " match url
  let url = matchstr(line, '\vhttps?:\/\/[^)''" ]+')
  if !empty(url)
    call s:system('open '. url)
  else
    let mail = matchstr(line, '\v([A-Za-z0-9_\.-]+)\@([A-Za-z0-9_\.-]+)\.([a-z\.]+)')
    if !empty(mail)
      call s:system('open mailto:' . mail)
    endif
  endif
endfunction

function! s:system(cmd)
  let output = system(a:cmd)
  if v:shell_error && output !=# ""
    echohl Error | echon output | echohl None
  endif
endfunction

nnoremap <leader>o :call <SID>Open()<cr>
imap <2-LeftMouse> <C-o>:call <SID>Open()<CR>
nmap <2-LeftMouse> :call <SID>Open()<CR>