adding google style indentation for C++

indent/cpp.vim

@@ -0,0 +1,91 @@
+" Vim indent file
+" Language:	C++
+" Maintainer:	Konstantin Lepa <konstantin.lepa@gmail.com>
+" Last Change:	2010 May 20
+" Version: 1.0.1
+"
+" Changes {{{
+" 1.0.1 2010-05-20
+"   Added some changes. Thanks to Eric Rannaud <eric.rannaud@gmail.com>
+"
+"}}}
+
+if exists("b:did_indent")
+   finish
+endif
+let b:did_indent = 1
+
+function! GoogleCppIndent_aux(line_num)
+  let l:cline_num = a:line_num
+  echo l:cline_num
+  let l:pline_num = prevnonblank(l:cline_num - 1)
+  let l:pline = getline(l:pline_num)
+  " Test to avoid indenting to 0 the content of comments that follow a
+  " 'namespace'.
+  " Without the test, you get:
+  "   namespace n {
+  "   /*
+  "   * Comment: there should be spaces before the '*', depending on the
+  "   * cinoptions=cN.
+  "   *
+  "   */
+  " So, if current line is right after a comment, go find the first non-blank,
+  " non-comment line before us, as in your code.
+  " Otherwise, use cindent(prevnonblank(l:cline_num - 1), which works
+  " OK even if current line is in a comment.
+  if l:pline =~# '\(^\s*//\|^\s*\*/\s*$\)'
+    while l:pline =~# '\(^\s*//\|^\s*\*/\s*$\|^\s*/\*\|^\s*\*\)'
+      let l:pline_num = prevnonblank(l:pline_num - 1)
+      let l:pline = getline(l:pline_num)
+    endwhile
+  endif
+
+  let l:retv = cindent(l:cline_num)
+  if l:pline =~# '^\s*template.*'
+    " Call recursively, in case 'template' follows right after a 'namespace'.
+    let l:retv = GoogleCppIndent_aux(l:pline_num)
+  elseif l:pline =~# '^\s*namespace.*'
+    let l:retv = 0
+  endif
+
+  return l:retv
+endfunction
+
+function! GoogleCppIndent()
+  let l:cline_num = line('.')
+  " Auxiliary function to permit recursive calls.
+  return GoogleCppIndent_aux(l:cline_num)
+endfunction
+
+"function! GoogleCppIndent()
+"  let l:cline_num = line('.')
+"  let l:pline_num = prevnonblank(l:cline_num - 1)
+"  let l:pline = getline(l:pline_num)
+"  while l:pline =~# '\(^\s*{\s*\|^\s*//\|^\s*/\*\|\*/\s*$\)'
+"    let l:pline_num = prevnonblank(l:pline_num - 1)
+"    let l:pline = getline(l:pline_num)
+"  endwhile
+"  let l:retv = cindent('.')
+"  if l:pline =~# '^\s*template.*'
+"    let l:retv = cindent(l:pline_num)
+"  elseif l:pline =~# '^\s*namespace.*'
+"    let l:retv = 0
+"  endif
+"
+"  return l:retv
+"endfunction
+
+setlocal shiftwidth=2
+setlocal tabstop=2
+setlocal softtabstop=2
+setlocal expandtab
+setlocal textwidth=80
+setlocal nowrap
+
+setlocal cindent
+setlocal cinoptions=h1,l1,g1,t0,i4,+4,(0,w1,W4
+
+setlocal indentexpr=GoogleCppIndent()
+
+let b:undo_indent = "setl sw< ts< sts< et< tw< wrap< cin< cino< inde<"
+