Changelog Generation Methods

gistfile1.vim

" Takes less than a second.

func! s:create_changelog() abort
  for bundle in g:updated_bundles
    let updates = system('cd '.shellescape(bundle.path()).
          \              ' && git log --pretty=format:"%s   %an, %ar" --graph'.
          \              ' vundle_update..HEAD')
    call add(g:vundle_changelog, '')
    call add(g:vundle_changelog, 'Updated Bundle: '.bundle.name)

    if bundle.uri =~ "https://github.com"
      let update_sha = system('cd '.shellescape(bundle.path()).' && git rev-list -1 vundle_update')[0:9]
      call add(g:vundle_changelog, 'Compare at: '.bundle.uri[0:-5].'/compare/'.update_sha.'...HEAD')
    endif

    for update in split(updates, '\n')
      let update = substitute(update, '\s\+$', '', '')
      call add(g:vundle_changelog, '  '.update)
    endfor
  endfor
endf


" Takes just over 5 seconds

func! s:create_slow_changelog() abort
  for bundle in g:bundles
    let updates = system('cd '.shellescape(bundle.path()).
          \              ' && git log --pretty=format:"%s   %an, %ar" --graph'.
          \              ' vundle_update..HEAD')
    if (len(updates) > 0) && (0 == v:shell_error)
      call add(g:vundle_changelog, '')
      call add(g:vundle_changelog, 'Updated Bundle: '.bundle.name)

      if bundle.uri =~ "https://github.com"
        let update_sha = system('cd '.shellescape(bundle.path()).' && git rev-list -1 vundle_update')[0:9]
        call add(g:vundle_changelog, 'Compare at: '.bundle.uri[0:-5].'/compare/'.update_sha.'...HEAD')
      endif

      for update in split(updates, '\n')
        let update = substitute(update, '\s\+$', '', '')
        call add(g:vundle_changelog, '  '.update)
      endfor
    endif
  endfor
endf