Add support for cdelledonne/vim-cmake

autoload/airline/extensions.vim

@@ -181,6 +181,12 @@ function! airline#extensions#load()
     call add(s:loaded_ext, 'fzf')
   endif
 
+  " Vim-CMake buffers are also terminal buffers, so this must be above term.
+  if get(g:, 'loaded_cmake', 0) && get(g:, 'airline#extensions#vimcmake#enabled', 1)
+    call airline#extensions#vimcmake#init(s:ext)
+    call add(s:loaded_ext, 'vimcmake')
+  endif
+
   if (has("terminal") || has('nvim')) &&
         \ get(g:, 'airline#extensions#term#enabled', 1)
     call airline#extensions#term#init(s:ext)

autoload/airline/extensions/vimcmake.vim

@@ -0,0 +1,30 @@
+" MIT License. Copyright (c) 2013-2020 Bailey Ling et al.
+" Plugin: https://github.com/cdelledonne/vim-cmake
+" vim: et ts=2 sts=2 sw=2
+
+scriptencoding utf-8
+
+function! airline#extensions#vimcmake#init(ext) abort
+  call a:ext.add_statusline_func('airline#extensions#vimcmake#apply')
+  call a:ext.add_inactive_statusline_func('airline#extensions#vimcmake#inactive_apply')
+endfunction
+
+function! airline#extensions#vimcmake#apply(...) abort
+  if &filetype ==# 'vimcmake'
+    let spc = g:airline_symbols.space
+    call a:1.add_section('airline_a', spc.'CMake'.spc)
+    call a:1.add_section('airline_b', spc.'%{cmake#statusline#GetBuildInfo(1)}'.spc)
+    call a:1.add_section('airline_c', spc.'%{cmake#statusline#GetCmdInfo()}'.spc)
+    return 1
+  endif
+endfunction
+
+function! airline#extensions#vimcmake#inactive_apply(...) abort
+  if getbufvar(a:2.bufnr, '&filetype') ==# 'vimcmake'
+    let spc = g:airline_symbols.space
+    call a:1.add_section('airline_a', spc.'[CMake]')
+    call a:1.add_section('airline_b', spc.'%{cmake#statusline#GetBuildInfo(0)}')
+    call a:1.add_section('airline_c', spc.'%{cmake#statusline#GetCmdInfo()}')
+    return 1
+  endif
+endfunction