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[stack/conf/vim.git] / addons / LargeFile / plugin / LargeFile.vim
1 " LargeFile: Sets up an autocmd to make editing large files work with celerity
2 "   Author:             Charles E. Campbell, Jr.
3 "   Date:               Sep 23, 2008
4 "   Version:    4
5 " GetLatestVimScripts: 1506 1 :AutoInstall: LargeFile.vim
6
7 " ---------------------------------------------------------------------
8 " Load Once: {{{1
9 if exists("g:loaded_LargeFile") || &cp
10  finish
11 endif
12 let g:loaded_LargeFile = "v4"
13 let s:keepcpo          = &cpo
14 set cpo&vim
15
16 " ---------------------------------------------------------------------
17 " Commands: {{{1
18 com! Unlarge                    call s:Unlarge()
19 com! -bang Large                call s:LargeFile(<bang>0,expand("%"))
20
21 " ---------------------------------------------------------------------
22 "  Options: {{{1
23 if !exists("g:LargeFile")
24  let g:LargeFile= 20    " in megabytes
25 endif
26
27 " ---------------------------------------------------------------------
28 "  LargeFile Autocmd: {{{1
29 " for large files: turns undo, syntax highlighting, undo off etc
30 " (based on vimtip#611)
31 augroup LargeFile
32  au!
33  au BufReadPre * call <SID>LargeFile(0,expand("<afile>"))
34  au BufReadPost *
35  \  if &ch < 2 && (getfsize(expand("<afile>")) >= g:LargeFile*1024*1024 || getfsize(expand("<afile>")) == -2)
36  \|  echomsg "***note*** handling a large file"
37  \| endif
38 augroup END
39
40 " ---------------------------------------------------------------------
41 " s:LargeFile: {{{2
42 fun! s:LargeFile(force,fname)
43 "  call Dfunc("LargeFile(force=".a:force." fname<".a:fname.">)")
44   if a:force || getfsize(a:fname) >= g:LargeFile*1024*1024 || getfsize(a:fname) <= -2
45    syn clear
46    let b:eikeep = &ei
47    let b:ulkeep = &ul
48    let b:bhkeep = &bh
49    let b:fdmkeep= &fdm
50    let b:swfkeep= &swf
51    set ei=FileType
52    setlocal noswf bh=unload fdm=manual ul=-1
53    let fname=escape(substitute(a:fname,'\','/','g'),' ')
54    exe "au LargeFile BufEnter ".fname." set ul=-1"
55    exe "au LargeFile BufLeave ".fname." let &ul=".b:ulkeep."|set ei=".b:eikeep
56    exe "au LargeFile BufUnload ".fname." au! LargeFile * ". fname
57    echomsg "***note*** handling a large file"
58   endif
59 "  call Dret("s:LargeFile")
60 endfun
61
62 " ---------------------------------------------------------------------
63 " s:Unlarge: this function will undo what the LargeFile autocmd does {{{2
64 fun! s:Unlarge()
65 "  call Dfunc("s:Unlarge()")
66   if exists("b:eikeep") |let &ei  = b:eikeep |endif
67   if exists("b:ulkeep") |let &ul  = b:ulkeep |endif
68   if exists("b:bhkeep") |let &bh  = b:bhkeep |endif
69   if exists("b:fdmkeep")|let &fdm = b:fdmkeep|endif
70   if exists("b:swfkeep")|let &swf = b:swfkeep|endif
71   syn on
72   doau FileType
73 "  call Dret("s:Unlarge")
74 endfun
75
76 " ---------------------------------------------------------------------
77 "  Restore: {{{1
78 let &cpo= s:keepcpo
79 unlet s:keepcpo
80 " vim: ts=4 fdm=marker